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PIC17C44T-16/PT - 16MHz 8-Bit OTP MCU, 16KB, 44-TQFP | Microchip
PIC17C44T-16/PT

PIC17C44T-16/PT - 16MHz 8-Bit OTP MCU, 16KB, 44-TQFP | Microchip

The Microchip Technology PIC17C44T-16/PT is an 8-bit RISC microcontroller in the PIC17C family, delivering 8.25 MIPS of performance at 16 MHz from a 5V (4.5V-6V) supply, housed in a 44-pin TQFP (10x10 mm) surface-mount package with 16 KB of One-Time-Programmable (OTP) program memory and 454 bytes of data RAM across 33 I/O pins. The "T" suffix indicates Tape & Reel packaging and the "16" suffix denotes the 16 MHz maximum clock speed. An 8-bit PIC microcontroller (MCU) is a small, low-cost computer-on-a-chip built around the Peripheral Interface Controller (PIC) RISC architecture introduced by Microchip. PIC MCUs sit in the broader hierarchy of microcontrollers -> embedded processors -> semiconductor devices. The PIC17C family is the high-performance tier of the 8-bit PIC lineup, offering the largest program memory, the deepest interrupt structure, and the highest I/O count of the classic 8-bit PIC families, making it suitable for complex control tasks traditionally reserved for 16-bit parts. Key features include Harvard bus architecture with separate program and data memory paths, 16 KB (8K x 16) of OTP program memory, 454 bytes of general-purpose RAM, 33 digital I/O lines, on-chip peripherals including PWM, Watchdog Timer (WDT), Power-On Reset (POR), and a hardware UART/USART for asynchronous serial communication. The device executes 58 single-word instructions, all single-cycle except for program branches which take two cycles. The PIC17C44's CMOS process delivers low power consumption while sustaining 8.25 MIPS throughput (121 ns minimum instruction cycle). Its 16-level hardware stack and multi-source interrupt structure simplify firmware development for time-critical control loops, and the PIC17C line is fully upwards code-compatible with the PIC16C5X, PIC12CXXX, and PIC16CXX families - existing assembler investments are preserved when migrating. Typical applications include industrial process controllers, motor control front-ends, automotive body and chassis ECUs (pre-CAN era), HVAC control boards, point-of-sale terminals, security system panels, and embedded data-acquisition front-ends. The PIC17C44 is the original Microchip PIC microcontroller recommended for drop-in upgrades to PIC16C-series designs that have outgrown code space or I/O count. Designers should note that the PIC17C44 OTP windowless parts require a one-shot programming step during manufacturing; for field-reprogrammable designs, the PIC18F442 is the modern migration path (per Microchip's own product page). Operate the device within the 4.5V-6V supply envelope and derate I/O sink/source current when many pins switch simultaneously. This page synthesizes distributor pricing, drop-in alternatives from the PIC17C family, and practical design notes that complement the Microchip datasheet and PICmicro Mid-Range Reference Manual.

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PIC17C44T-16I/PT - 16MHz 8-Bit OTP MCU, 44-TQFP | Microchip
PIC17C44T-16I/PT

PIC17C44T-16I/PT - 16MHz 8-Bit OTP MCU, 44-TQFP | Microchip

The Microchip Technology PIC17C44T-16I/PT is a high-performance 8-bit CMOS EPROM/ROM-based PIC microcontroller from the PIC17C family, operating at 16 MHz with 16 KB (8K x 16) of One-Time-Programmable (OTP) program memory and 454 bytes of RAM, housed in a 44-pin TQFP (10x10 mm) industrial-temperature grade package. The "T" suffix in the part number indicates tape-and-reel packaging, and the "I" suffix indicates the industrial temperature range of -40C to +85C. It integrates 33 digital I/O lines, a 16-bit timer/counter, 8-bit PWM, hardware USART, POR (Power-On Reset) and a Watchdog Timer (WDT). What is a PIC17C microcontroller? The PIC17C is Microchip's high-end 8-bit PIC architecture, one tier above the PIC16C family, designed for applications that demand more code space, more peripherals and higher throughput than mid-range PIC devices can offer while preserving the classic 5V CMOS simplicity. The architecture executes one instruction per cycle and targets 8.25 MIPS (121 ns instruction cycle) at 33 MHz maximum clock. Within Microchip's taxonomy, PIC17C sits between PIC16C (mid-range 8-bit) and PIC18F (enhanced 8-bit with self-programming Flash). It is supplied by the legacy "Mature Product" portfolio and has been superseded for new designs by the Flash-based PIC18F442, but remains widely available in distribution channels for industrial maintenance and legacy equipment. Key features include 16 KB OTP program memory (one-time programmable - once written, the code is permanent and cannot be erased), 454 bytes of general-purpose SRAM, 33 I/O pins spread across multiple ports, a hardware USART for asynchronous/synchronous serial communication, an 8-bit PWM channel with programmable period and duty cycle, a 16-bit timer/counter, dual clock sources with selectable oscillator modes (RC, XT, HS, LP), a Watchdog Timer with its own on-chip RC oscillator for reliable operation, Power-On Reset and Brown-Out Reset, and a wide 4.5V-5.5V supply range. The TQFP-44 industrial temperature grade suits harsh factory-floor and outdoor embedded deployments. From an architectural standpoint, the PIC17C44 uses a 16-bit instruction word (vs. 14-bit in PIC16C) which yields 8K x 16 instructions of code space and supports immediate data up to 16 bits, indirect addressing with FSR registers, and a hardware multiply assist path. The OTP memory is single-write per bit cell, providing ROM-like permanence with prototype-grade programming flexibility. The 33 I/O pins are distributed as PORTA (8 bits), PORTB (8 bits), PORTC (8 bits) and PORTD upper bits, supporting TTL/CMOS levels at 5V with source/sink capability of 20 mA per pin. Typical applications include industrial automation controllers, motor control boards (the 8-bit PWM and 16-bit timer support closed-loop DC and stepper drives), HVAC thermostat and sensor interfaces, automotive aftermarket modules, point-of-sale terminals, legacy embedded data-acquisition front-ends, and intelligent sensor hubs. The wide 5V supply tolerance and industrial temperature rating make the PIC17C44 a practical choice for retrofitting older 5V-only industrial boards. When designing with this device, mind the OTP program-memory constraint: code cannot be erased or rewritten, so OTP parts are typically used for production builds after code is frozen on a prototype Flash equivalent. Designers should prototype on the PIC17C44 JW (windowed EPROM) variant and validate firmware thoroughly before committing to OTP production. Verify supply voltage stays inside the 4.5V-5.5V window, keep Vpp decoupling within 1 cm of the IC, and observe the 20 mA per-pin I/O limit when driving relays or LEDs directly. This page synthesizes distributor pricing, drop-in Microchip-family alternatives and practical design notes that are not aggregated on any single manufacturer or distributor page.

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PIC17C44T-25/PQ - 25MHz 8-Bit CMOS OTP MCU, 44-MQFP | Microchip
PIC17C44T-25/PQ

PIC17C44T-25/PQ - 25MHz 8-Bit CMOS OTP MCU, 44-MQFP | Microchip

The Microchip Technology PIC17C44T-25/PQ is a high-performance 8-bit CMOS EPROM/ROM microcontroller from the PIC17C family, delivering 25 MIPS (121 ns instruction execution) from a 25 MHz external clock in a 44-pin Metric Quad Flat Pack (MQFP, 10x10 mm) package. The device integrates 16 KB of OTP program memory organized as 8K x 16 words and 454 bytes of general-purpose RAM, with 33 digital I/O pins for peripheral interfacing. A microcontroller (MCU) is a single-chip computer that combines a CPU core, program memory, working RAM, and programmable I/O peripherals on one IC. The PIC17C family sits at the high end of Microchip's original 8-bit PIC hierarchy, offering RISC throughput, upwards compatibility with PIC16C5X/PIC12CXXX/PIC16CXX devices, and only 58 single-word instructions. PIC17C44 is the family's flagship part, later superseded by PIC18F442 per Microchip's product migration notice. Key specifications include a 25 MHz maximum operating frequency (8.25 MIPS sustained throughput), 16-bit-wide instruction word with Harvard architecture, 33 I/O ports, a hardware multiplier, and an 8-level deep hardware stack. The chip operates from a 4.5 V to 6.0 V supply and supports both commercial and industrial temperature grades depending on suffix. The 'T' suffix denotes tape-and-reel packaging; the /PQ suffix denotes the MQFP-44 surface-mount package. The PIC17C44's RISC pipeline and 16-bit-wide program path give it roughly 4x the throughput of legacy PIC16C5X parts at the same clock, making it suitable for real-time control loops, encoder/counter applications, and motor control. Hardware peripherals include a 16-bit timer/counter with capture/compare/PWM, a USART, and 8 channels of 10-bit (or 8-bit) analog-to-digital conversion on selected package variants. Typical applications include industrial automation controllers, motor drives, HVAC control boards, instrumentation front-ends, and legacy embedded designs ported from PIC16C5X/PIC16CXX firmware. The wide instruction set and C-compiler support (MPC, CCS, IAR) make it usable for mid-complexity state machines. Automotive-grade -40 C to +125 C variants exist with the /I suffix. When designing with this device, note that OTP memory requires one-time programming via a device programmer; if in-field firmware updates are required, migrate to a flash-based PIC18F or PIC16F equivalent. Decoupling: place 100 nF + 10 uF tantalum on VDD near the IC. MCLR must be pulled high through 10 kohm for normal operation, and the oscillator block needs the standard XT/LP/HS capacitor network documented in the datasheet. This page synthesizes distributor stock data, drop-in Microchip PIC17C family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC17C44T-25/PT - 8-Bit 25MHz 16KB OTP MCU TQFP-44 | Microchip
PIC17C44T-25/PT

PIC17C44T-25/PT - 8-Bit 25MHz 16KB OTP MCU TQFP-44 | Microchip

The Microchip Technology PIC17C44T-25/PT is a high-performance 8-bit CMOS EPROM/ROM microcontroller from the PIC17C family, delivering 8.25 MIPS (121 ns instruction execution) at 25 MHz core speed in a 44-pin TQFP (10x10 mm) surface-mount package. It integrates 16 KB of One-Time Programmable (OTP) program memory organized as 8K x 16 words, 454 bytes of general-purpose RAM, and 33 digital I/O pins for embedded control applications. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data RAM, and peripheral set. Within the semiconductor taxonomy, MCUs belong to microcontrollers, then embedded processors, then logic ICs, then integrated circuits. The PIC17C family sits at the high-performance tier of Microchip's 8-bit portfolio, bridging toward PIC18 and dsPIC devices in instruction throughput while retaining 8-bit data paths. Key features include a RISC architecture with 58 single-word instructions, an external oscillator interface supporting HS, XT, LP and RC modes, a 16-bit timer/counter with capture/compare/PWM capability, an 8-bit timer/counter, hardware USART, watchdog timer, power-on reset (POR), and brown-out reset (BOR). The OTP memory supports in-circuit programming via Microchip's ICSP protocol, simplifying firmware development and field updates. The PIC17C44 architecture uses a 16-bit instruction word with Harvard bus separation between program and data memory, eliminating fetch bottlenecks. Each instruction cycle executes in 4 oscillator clocks, and the 25 MHz rating supports 121 ns instruction time. The device operates across 3.0 V to 5.5 V supply with commercial temperature grade (0C to +70C), drawing typically under 10 mA active. Typical applications include industrial control systems, motor control, HVAC equipment, instrumentation, automotive body controllers, and consumer appliance controllers. The PWM and USART peripherals simplify variable-frequency drive and communication tasks. When designing with this part, place a 0.1 uF decoupling capacitor within 5 mm of each VDD/VSS pair, and use ICSP connector access to all five programming pins (RB6, RB7, MCLR, VDD, VSS) to enable field re-flash even on production boards. This page synthesizes distributor pricing, drop-in PIC17C44 family alternatives, and practical design notes not found in the standalone datasheet.

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PIC17C44T-25E/PT - 8-Bit OTP MCU, 16KB, 25MHz, 44-TQFP | Microchip
PIC17C44T-25E/PT

PIC17C44T-25E/PT - 8-Bit OTP MCU, 16KB, 25MHz, 44-TQFP | Microchip

The Microchip Technology PIC17C44T-25E/PT is an 8-bit RISC CMOS EPROM/ROM microcontroller from the PIC17C family, offering 16KB of one-time-programmable (OTP) program memory, 454 bytes of RAM, and a 25 MHz maximum operating frequency in a 44-pin TQFP package supplied on tape-and-reel. The device delivers 8.25 MIPS (121 ns instruction execution) across 58 single-word instructions and is upwards compatible with PIC16C5X, PIC12CXXX, and PIC16CXX architectures. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/EPROM/Flash), data memory (RAM), and peripherals such as timers, PWM, ADC, and I/O ports onto one silicon die. Within the broader taxonomy, an MCU belongs to the family of microprocessors -> microcontrollers -> 8-bit microcontrollers -> embedded controllers. PIC17C44 specifically belongs to Microchip's high-performance PIC17 family, positioned between PIC16 mid-range parts and PIC18 enhanced parts, and was later superseded functionally by PIC18F442 per the manufacturer's current product page. Key differentiating features of the PIC17C44 include a Harvard-architecture RISC core, 33 digital I/O pins, an 8-bit timer/counter with PWM capability, an enhanced UART, multiple interrupt sources, power-on reset (POR), brown-out reset (BOR), watchdog timer (WDT), and an external oscillator interface supporting crystal, RC, and resonator modes. The 'E' suffix in the part number denotes the Extended industrial temperature grade of -40C to +125C, while the 'T' indicates tape-and-reel packaging. Architecturally, the PIC17C44 implements a 16-bit-wide instruction word with separate program and data buses, enabling single-cycle instruction fetch. The OTP EPROM cell array is windowless and one-time programmable; engineering samples use a ceramic windowed package for erasure during development. Brown-out detection and a low-voltage detector protect the part from code corruption during supply droop events. Typical applications include industrial control, motor drive PWM control loops, instrumentation, automotive subsystems, and legacy embedded systems requiring deterministic 8-bit execution. Engineers typically pair this MCU with external op-amps, RS-232/RS-485 transceivers, and EPROM/Flash memory in expanded bus modes. Design tip: in noisy industrial environments, place a 100 nF decoupling capacitor within 5 mm of each VDD/VSS pair and use a watchdog timeout longer than the longest expected blocking routine to avoid spurious resets.

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PIC17C44T-25I/L - 8-Bit 25MHz PIC17C MCU 16KB OTP 44-PLCC
PIC17C44T-25I/L

PIC17C44T-25I/L - 8-Bit 25MHz PIC17C MCU 16KB OTP 44-PLCC

The Microchip Technology PIC17C44T-25I/L is an 8-bit CMOS EPROM/ROM-based microcontroller belonging to the PIC17C family, delivering 25MHz (8.25 MIPS, 121ns instruction execution) performance with 16KB (8K x 16) of One-Time Programmable (OTP) program memory in a 44-pin PLCC (16.59x16.59 mm) package. It is part of the broader PIC17C series that bridges the gap between classic PIC16 mid-range microcontrollers and the more advanced PIC18 family. According to the manufacturer datasheet, the device features 454 bytes of RAM, 33 digital I/O pins, and operates from a 5V supply with an industrial temperature range of -40C to +85C. A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, working RAM, and configurable peripherals. The PIC17C44 belongs to the PIC17C high-performance family which extended Microchip's 8-bit RISC architecture to 8.25 MIPS, doubling the throughput of earlier PIC16C5X/PIC16CXX devices while remaining upwards instruction-compatible with them. This generation sits in the hierarchy: microcontroller -> embedded controller -> 8-bit MCU -> PIC17C family -> PIC17C44 device. Key features include 16KB OTP program memory (8K x 16 words), 454 bytes of RAM, 8-bit data width, 25MHz maximum clock frequency, 58 single-word instruction set, 33 I/O pins, 2x 8-bit and 3x 16-bit timers, watchdog timer, brown-out reset, and parallel slave port. The OTP program memory is one-time programmable via EPROM technology, making the PIC17C44T-25I/L well-suited to low-volume production runs, prototyping, and educational designs where in-system re-programmability is not required. Technical depth: the PIC17C44 uses a RISC Harvard-architecture core with separate program and data buses, a 16-bit-wide program word, and a single-cycle instruction fetch. It is available with EPROM (windowed and OTP) and masked-ROM program memory options. The PLCC-44 J-lead surface-mount package provides a robust through-hole-replaceable footprint compatible with IC sockets, easing prototyping and field replacement. According to the manufacturer, the device draws approximately 25mA active at 25MHz. Typical applications include industrial automation control, motor control drivers, embedded instrumentation, building automation, security and alarm systems, automotive body controllers, and point-of-sale terminals. The PIC17C44T-25I/L is also widely used in legacy designs and OEM replacement where the original PIC17C44 was specified. The OTP memory suits applications that ship with fixed firmware and do not require firmware updates. When designing with this device, account for the OTP memory limitation - firmware bugs cannot be corrected in-circuit. For new designs where in-system re-programmability matters, consider PIC18F or PIC16F flash-based alternatives. The 44-PLCC package allows socketed prototyping; an Aries 44-pin PLCC socket or equivalent is recommended for development cycles. This page synthesizes distributor pricing, drop-in PIC17C family alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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PIC17C44T-25I/PQ - 8-bit 25MHz OTP MCU 16KB | Microchip
PIC17C44T-25I/PQ

PIC17C44T-25I/PQ - 8-bit 25MHz OTP MCU 16KB | Microchip

The Microchip Technology PIC17C44T-25I/PQ is a high-performance 8-bit CMOS EPROM/ROM microcontroller from the PIC17C family, delivering 8.25 MIPS performance with a 121 ns instruction cycle, 16 KB of OTP program memory (8K x 16), 454 bytes of RAM, and 33 I/O pins in a 44-pin MQFP (10x10 mm) package. An OTP (One-Time Programmable) microcontroller is a programmable device whose on-chip program memory is a one-time-writable EPROM cell - the device can be programmed once by the user before being sealed, after which the program is permanent. The PIC17C family sits above the PIC16C in the Microchip 8-bit hierarchy (PIC10F -> PIC12F -> PIC16F -> PIC17C -> PIC18F), offering higher throughput and expanded peripheral integration for cost-sensitive embedded applications that need more MIPS than a PIC16C but less complexity than a 16-bit dsPIC. Key features include 58 single-word instructions, a single-cycle instruction execution architecture (121 ns at 25 MHz oscillator), an operating voltage of 5V, 33 digital I/O lines, and a 25 MHz maximum clock input with up to 33 MHz clock tolerance. The device supports up to 16 KB of EPROM program memory with 454 x 8 bytes of data RAM, and the 44-pin MQFP (PQ) package provides generous I/O count and a compact surface-mount footprint for industrial-grade (-40C to +85C) operation. Architecturally, the PIC17C44 uses Microchip's RISC-based PIC core with a 16-bit instruction word and 8-bit data path, an internal 16-level hardware stack for fast subroutine calls, and a Harvard bus structure that separates program and data fetches to enable single-cycle instruction throughput. Industrial-temperature screening (the "I" suffix) and the EPROM-based OTP cell make this part well suited to legacy embedded control designs that need one-time-coded firmware and long-life supply continuity. Typical applications include industrial automation controllers, motor control front-ends, embedded instrumentation, legacy control board retrofits, and white-goods appliance control. The 33 I/O count supports keypad scanning, LED/LCD multiplexing, and direct drive of relays, solenoids, and small stepper motors. Engineers familiar with PIC16C migration paths often choose PIC17C44 because the instruction set is upward-compatible while offering roughly twice the throughput. When designing with this device, plan for an external 5V regulator, decoupling caps on VDD/AVDD pairs, and a programmer that supports EPROM OTP (e.g., MPLAB PM3). Note that the PIC17C44 is a mature EOL/EOL-near part - confirm long-term availability before committing to new designs, and consider the modern PIC18F442 or PIC18F452 as pin-compatible successors. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC17C44T-25I/PT - 8-Bit 25MHz 16KB OTP MCU 44-TQFP | Microchip
PIC17C44T-25I/PT

PIC17C44T-25I/PT - 8-Bit 25MHz 16KB OTP MCU 44-TQFP | Microchip

The Microchip Technology PIC17C44T-25I/PT is a high-performance 8-bit CMOS EPROM/ROM microcontroller from the PIC17C family operating at 25 MHz, with 16 KB of OTP program memory organized as 8K x 16 words and 454 bytes of RAM, housed in a 44-pin TQFP (10x10 mm) industrial-temperature-grade package. It belongs to the RISC architecture microcontrollers from Microchip, offering 33 digital I/O pins and one-time-programmable (OTP) EPROM program memory suited to production runs with stable firmware. What is an 8-bit microcontroller? An 8-bit microcontroller is a single-chip computer that processes data in 8-bit chunks using a CPU, program memory, data RAM, and integrated peripherals. The PIC17C44T sits in the PIC17C high-end 8-bit family - historically Microchip's fastest 8-bit OTP line, positioned between the standard PIC16 and later PIC18 architectures. In the broader taxonomy: microcontroller -> 8-bit MCU -> RISC MCU -> embedded controller -> semiconductor. It is intended for industrial-grade embedded designs where deterministic instruction execution and integrated peripherals reduce external component count. Key features of the PIC17C44T-25I/PT include 16 KB (8K x 16) EPROM program memory, 454 bytes of data RAM, 33 I/O pins, and a 25 MHz maximum clock speed driving a RISC instruction set. The TQFP-44 (10x10 mm) surface-mount package supports industrial operating temperatures per the "I" suffix. The part supports OTP one-time-programmable memory useful for production volumes where code is final and frequent field updates are not required. "T" in the part number denotes tape-and-reel packaging per Microchip ordering nomenclature. At the architectural level, the PIC17C44 family is built on a Harvard-architecture RISC core, separating program and data buses for parallel instruction fetch and operand access. The RISC instruction set aims to execute most instructions in a single instruction cycle, supporting deterministic interrupt response and predictable timing. The on-chip EPROM allows factory or prototype programming, while the integrated oscillator, timer, and interrupt controller reduce external glue logic. Typical applications include industrial process controllers, motor drive sequencers, instrument front-panel controllers, factory automation front-ends, and prototype / low-volume production appliances where an 8-bit RISC MCU provides sufficient control with minimal board area. Designers typically pair the PIC17C44T with sensors, optocouplers, power-driver ICs, and character or graphical LCDs. When designing with this part, note that PIC17C44 is a mature, NRND/EOL family - confirm long-term supply and the latest Microchip product-change notifications before specifying it for new production. Plan firmware in a compatible C or assembly toolchain and verify that the I/O count and peripheral mix match system requirements. Use decoupling capacitors per Microchip's recommended layout and place the EPROM-programmed reset circuit close to the MCLR pin for clean brown-out behavior. This page consolidates distributor pricing from Mouser and DigiKey, plus drop-in and same-family alternatives from Microchip, into a single technical reference that complements the official datasheet with cross-validated package, lifecycle, and parametric data.

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PIC17C44T-33/L - 8-Bit 33MHz PIC17C MCU 16KB OTP 44-PLCC | Microchip
PIC17C44T-33/L

PIC17C44T-33/L - 8-Bit 33MHz PIC17C MCU 16KB OTP 44-PLCC | Microchip

The Microchip Technology PIC17C44T-33/L is a high-performance 8-bit RISC microcontroller from the PIC17C family, featuring a 33 MHz maximum clock input and a 16 KB (8K x 16) One-Time Programmable (OTP) EPROM program memory in a 44-pin PLCC (J-lead) package measuring 16.59 x 16.59 mm. The device executes 58 single-word instructions, and all instructions complete in a single cycle (121 ns at 33 MHz) except program branches and table reads/writes which require two cycles, giving an effective 33 MIPS throughput. A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/EPROM/Flash), data RAM, and programmable I/O peripherals onto one IC. The PIC17C family targets high-end 8-bit applications requiring more computational throughput than the PIC16 family and bridges toward the PIC18 generation. Architecturally, the PIC17C44 belongs to the Modified Harvard architecture family with separate program and data buses, which lets instructions be fetched in parallel with operand access, yielding predictable deterministic throughput essential for real-time control loops. OTP EPROM lets prototypes be programmed in volume with no windowed package cost. Key features include a 33 MHz maximum operating frequency, 16 KB on-chip OTP EPROM (organized 8K x 16 instruction words), 454 bytes of general-purpose RAM, 33 digital I/O lines, an internal 8-level hardware stack, and a programmable code-protection bit. Peripherals include three 8-bit timer/counters, a Universal Synchronous/Asynchronous Receiver/Transmitter (USART), a watchdog timer with its own on-chip RC oscillator, and a programmable brown-out reset. The die is fabricated on a low-power CMOS process, allowing operation from a single 4.5 V to 6.0 V supply and supporting commercial temperature grades. The 16-bit instruction width enables immediate operand encoding and direct register-memory operations that are awkward on 12-bit and 14-bit PIC cores, while preserving the PIC register-file programming model familiar to PIC16/PIC18 developers. Typical applications include industrial control and automation front-ends, automotive body and instrument modules, consumer appliance controllers, security and access-control panels, and embedded communication bridges where 33 MIPS of throughput and 33 I/O pins suffice. Designers often pair it with external EEPROM for parameter storage and an RS-232/RS-485 transceiver for serial connectivity via the integrated USART. When migrating firmware, the PIC17C44 source-level compatibility with PIC18 simplifies porting to modern Flash parts, but designers should note the OTP-only program memory means any post-production firmware update requires a board re-spin or a piggyback socket adapter. Decoupling must include a 100 nF ceramic and a 10 µF tantalum placed within 6 mm of VDD, with MCLR pulled high through a 10 kΩ resistor. This page synthesizes distributor stock data, parametric alternatives, and practical design notes that complement the Microchip datasheet, helping sourcing engineers make an informed decision on a long-running legacy MCU.

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PIC17C44T-33/PQ - 8-Bit 33MHz OTP MCU 16KB | Microchip
PIC17C44T-33/PQ

PIC17C44T-33/PQ - 8-Bit 33MHz OTP MCU 16KB | Microchip

The Microchip Technology PIC17C44T-33/PQ is an 8-bit RISC microcontroller from the legacy PIC17C family, featuring 16KB of One-Time Programmable (OTP) program memory, 454 bytes of RAM, and 33 digital I/O pins. Housed in a 44-pin MQFP (PQ) package, the part runs at a maximum clock speed of 33 MHz from a 5 V supply and integrates a Harvard-architecture CPU with separate program and data buses. The "T" suffix indicates tape-and-reel packaging, while "/PQ" denotes the 44-pin MQFP plastic gull-wing package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and peripherals into one package. The PIC17C family sits in Microchip's high-performance 8-bit tier - above the baseline PIC16 line and below the PIC18 - and was the first PIC family to use a 16-bit program word with a 16-bit instruction set, increasing code density and execution speed for embedded applications. PIC17C44T-33/PQ belongs to the broader Microcontrollers > Integrated Circuits semiconductor category. Key features include the 33 MHz maximum operating frequency, 16KB OTP program memory (8K x 16 words), 454 bytes of data RAM, 33 I/O pins, and hardware multiply/divide support. The device also includes multiple timer modules, a USART serial port, and interrupt handling suitable for real-time embedded control. The OTP memory allows one-time programming for low-volume production and is typically used where firmware is finalized and EEPROM-style in-field updates are not required. Architecturally, the PIC17C44 uses a RISC instruction set with a two-stage pipeline, separate program and data buses (Harvard architecture), and an 8-bit data path with 16-bit instructions. This combination delivers approximately 121 ns instruction cycle time at 33 MHz. The chip is built on a CMOS process and supports both commercial and industrial temperature grades, depending on the part suffix. Typical applications include industrial automation controllers, motor control, embedded instrumentation, sensor signal conditioning, and legacy embedded designs originally specified on the PIC17C platform. Because the part is OTP rather than flash, it is best suited to high-volume, fixed-firmware applications where field reprogramming is not a requirement. When designing with the PIC17C44T-33/PQ, note that this device is part of the older PIC17C generation and has been superseded for most new designs by PIC18 and dsPIC families with flash memory. Verify current lifecycle status before new design-in. Provide a stable 5 V rail and proper decoupling close to the VDD pins. This page synthesizes distributor pricing, drop-in alternatives from the PIC17C and PIC16C families, and practical design notes that go beyond the manufacturer datasheet to help engineers source and qualify the PIC17C44T-33/PQ.

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PIC17C44T-33/PT - 33MHz 8-Bit OTP MCU 16KB | Microchip
PIC17C44T-33/PT

PIC17C44T-33/PT - 33MHz 8-Bit OTP MCU 16KB | Microchip

The Microchip Technology PIC17C44T-33/PT is a high-performance 8-bit CMOS EPROM/ROM microcontroller (MCU) belonging to the PIC17C family, featuring 16KB (8K x 16) of One-Time Programmable (OTP) program memory, 454 bytes of RAM, and 33 general-purpose I/O pins, all housed in a 44-pin TQFP (10x10 mm) surface-mount package. It operates from a 33 MHz external clock input that yields a 121 ns instruction cycle, providing up to 8.25 MIPS throughput from its RISC architecture. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/OTP), working RAM, and peripheral interfaces (I/O, timers, serial ports, ADC) into one package. The PIC17C family occupies Microchip's high-end 8-bit tier — above PIC16 and baseline PIC12/PIC14 — and uses a 16-bit instruction word with an 8-bit data path, which improves code density for arithmetic-heavy embedded control. The PIC17C44T-33/PT sits at the top of the family with maximum program memory and maximum clock speed. Key features include a 16-level hardware stack for fast interrupt servicing, 33 I/O pins with individual direction control, multiple timer/counter modules, a USART for serial communication, and 8 MIPS-sustained execution. The 'T' suffix denotes tape-and-reel packaging, and the '-33' denotes the 33 MHz maximum clock. The OTP EPROM memory allows one-time programming using a standard EPROM programmer, suitable for production runs where code stability is finalized. Typical applications include industrial control systems, motor control, automotive body electronics, security and alarm systems, and smart sensor interfaces where a deterministic 8-bit core with abundant I/O outperforms baseline PIC16 designs. Designers favor this family for interrupt-heavy, real-time control loops where the 16-bit instruction word and 121 ns cycle simplify timing budgets. When designing with this part, ensure the external clock source meets the 33 MHz maximum with proper rise/fall times and that decoupling capacitors (typically 0.1 µF ceramic per VDD pair) are placed close to the supply pins. The OTP memory cannot be erased, so development should use the PIC17C44 JW windowed version or migrate to the flash-based PIC18F442 recommended by Microchip as the modern replacement.

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PIC17C44T-33E/PT - 33MHz 8-bit OTP MCU 16KB | Microchip TQFP-44
PIC17C44T-33E/PT

PIC17C44T-33E/PT - 33MHz 8-bit OTP MCU 16KB | Microchip TQFP-44

The Microchip Technology PIC17C44T-33E/PT is a one-time-programmable (OTP) 8-bit CMOS RISC microcontroller delivering 8.25 MIPS (121 ns instruction execution) from a 33 MHz clock, packaged in a 44-pin TQFP (PT) surface-mount format. The PIC17C44 device family pairs 16 KB of program memory (8K x 16 words) with 454 bytes of general-purpose RAM and 33 digital I/O pins, making it a dense logic controller for embedded applications that need more horsepower than PIC16C-series parts. The -33E speed/temperature grade supports 33 MHz operation across the -40 °C to +125 °C extended industrial range. A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory, working RAM, and peripheral I/O on a single die. Within the MCU taxonomy the PIC17C44 belongs to the 8-bit RISC family, sits above PIC16C mid-range parts in performance, and below PIC18 and 16-bit dsPIC architectures in both MIPS and on-chip resources. The PIC17C-series instruction set has 58 single-word instructions, is upwards-compatible with the PIC16C5X/PIC12CXXX/PIC16CXX baselines, and adds a hardware multiply and an 8-level deep stack suited to real-time control code. Key features include a 33 MHz external oscillator input, 33 bidirectional I/O lines, multiple timer/counter peripherals, a USART, and an OTP program memory array. The 8.25 MIPS core, 16-bit-wide instruction word, and 121 ns instruction cycle enable fast deterministic control loops for motor, power-conversion, and instrumentation firmware. The 'E' grade supports the -40 °C to +125 °C extended industrial temperature range, suitable for harsh-environment or under-hood deployments. Typical applications span industrial automation, motor control front-ends, embedded instrumentation, and legacy communications equipment where PIC16-series MIPS is insufficient. The wide temperature grade also fits automotive under-hood subsystems, process-control I/O, and white-goods control boards. Microchip's official product page recommends the PIC18F442 as the recommended modern replacement, offering flash memory, more peripherals, and broader tool support. Design considerations include OTP programming (parts cannot be reprogrammed in-circuit - firmware must be fully validated before burn), an external clock source requirement, and the legacy OTP silicon process. Engineers migrating designs should plan a path to PIC18F or PIC24/dsPIC modern flash parts. This page consolidates distributor pricing, verified specifications, drop-in alternatives, and design guidance not always found in the original datasheet.

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PIC17C44T-33I/L - 33MHz 8-bit OTP MCU, 16KB, 44-PLCC | Microchip
PIC17C44T-33I/L

PIC17C44T-33I/L - 33MHz 8-bit OTP MCU, 16KB, 44-PLCC | Microchip

The Microchip Technology PIC17C44T-33I/L is a high-performance 8-bit CMOS EPROM/ROM microcontroller operating at 33 MHz with a 121 ns instruction cycle, packaged in a 44-pin PLCC (16.59 x 16.59 mm) carrier. The device delivers 8.25 MIPS throughput across 58 single-word instructions, and integrates 16 KB (8K x 16) of OTP program memory and 454 bytes of data RAM with 33 general-purpose I/O pins. An 8-bit microcontroller (MCU) is a single-chip processor that integrates a CPU, program memory, data RAM, and peripherals such as timers, communication interfaces, and I/O ports into one package. The PIC17C family sits at the top of Microchip's original OTP-based 8-bit line, bridging toward the PIC18 generation. It belongs to the RISC microcontrollers hierarchy, within 8-bit MCUs, embedded microcontrollers, and finally the broader IC category. Like all RISC MCUs, it executes most instructions in a single cycle, which determines the deterministic timing engineers rely on for motor control and real-time I/O. Key features include UART/USART connectivity, integrated peripherals such as Power-on Reset (POR), Pulse-Width Modulation (PWM) outputs, and a Watchdog Timer (WDT). The 33 I/O pins provide ample headroom for keypad scanning, LCD driving, and sensor multiplexing. The OTP (One-Time-Programmable) EPROM program memory is intended for production-volume applications where in-system reprogrammability is not required, replacing older UV-erasable windowed parts with a lower-cost plastic package. Architecturally, the device uses an enhanced Harvard bus with separate program and data paths, plus a 16-bit-wide program word (8K x 16 = 16 KB) that delivers more opcode room than the PIC16C5X baseline. The architecture is upwards-compatible with PIC16C5X, PIC12CXXX, and PIC16CXX devices, easing firmware migration. The CMOS process contributes to the part's 4.5 V to 6 V supply range and industrial-grade -40 C to +85 C operating window. Typical applications include industrial control panels, motor-control front-ends, instrumentation front panels, embedded data-acquisition front ends, and automotive body subsystems where a deterministic 8-bit core is preferred over newer flash parts. The PWM peripheral supports brushed DC and unipolar stepper waveforms directly. Designers frequently choose the PIC17C44 when migrating legacy PIC16C code that needs more program memory than the 14-bit parts can address, while preserving the existing toolchain. When designing with this part, note that it is OTP-only - any firmware revision requires a new part and a fresh production build. Verify the 5 V supply headroom on each I/O load, since some PIC17C I/O structures sink more current than they source. Use Microchip's MPLAB IDE with the PIC17C device support to retain assembler-level debugging on the legacy architecture. This page consolidates distributor pricing, drop-in PLCC alternatives, and PCB layout notes not all gathered in one place in the legacy PIC17C44 datasheet.

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PIC17C44T-33I/PQ - 33MHz 8-Bit CMOS MCU, 16KB OTP | Microchip
PIC17C44T-33I/PQ

PIC17C44T-33I/PQ - 33MHz 8-Bit CMOS MCU, 16KB OTP | Microchip

The Microchip PIC17C44T-33I/PQ is a high-performance 8-bit CMOS EPROM/ROM microcontroller from the PIC17C family, delivering 8.25 MIPS at 33 MHz with 121 ns instruction execution, housed in a 44-pin MQFP (PQ) package. It integrates 16 KB of One-Time-Programmable (OTP) program memory, 454 bytes of general-purpose RAM, and up to 33 digital I/O pins, making it suitable for complex 8-bit embedded control. The PIC17C44 belongs to the 8-bit microcontroller category, a class of single-chip processors that combine CPU, program memory, RAM, and peripherals on a single die. Within the broader microcontroller taxonomy, the PIC17C44 sits as an enhanced PIC17C series device, upwards compatible with the PIC16C5X/PIC12CXXX/PIC16CXX families. Its RISC Harvard architecture with only 58 single-word instructions enables compact code generation; OTP program memory suits low-volume production and prototyping where in-system reprogrammability is not required. Key features include a 16-level hardware stack for nested subroutines, multiple counter/timer modules, an 8-bit A/D converter with multiple input channels, a USART for serial communication, and a watchdog timer for reliable operation. The part runs across the industrial temperature range of -40C to +85C (suffix "I") with a 2.5V to 6.0V operating voltage, allowing direct operation from a 5V regulated rail or a battery stack. Architecturally, the PIC17C44 uses a two-stage instruction pipeline with separate program and data buses, allowing the next instruction to be fetched while the current one executes. The OTP program memory is implemented in EPROM cells, which are programmed once via the ICSP interface and are not erasable; for erasable versions, the PIC17C44 needs to be replaced with a windowed ceramic-package variant. Peripherals are memory-mapped into the data bus, giving the C compiler and assembler a unified view. Typical applications include industrial control modules, automotive body electronics, white-goods motor control, and battery-powered sensor nodes where the PIC17C44T-33I/PQ's combination of OTP memory, RISC performance, and QFP packaging meets legacy design requirements. The Microchip MPLAB-X IDE supports legacy PIC17C development, allowing reuse of older code bases while maintaining source compatibility with newer PIC18F/PIC24 replacements. A key design consideration is that Microchip has announced the PIC17C family as mature and recommends the PIC18F442 as a newer, pin-compatible migration target for new designs. Designs should verify second-source availability and consider migrating to PIC18F parts for long-term continuity before starting new production. This page synthesizes distributor pricing, lifecycle status, and pin-compatible legacy PIC17C drop-in alternatives that are not listed in the manufacturer marketing collateral. Octopart inventories for the PIC17C44T-33I/PQ typically come from a limited number of authorized distributors handling EOL stock, so lead-time checks before quoting a production BOM are recommended.

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PIC17C44T-33I/PT - 33MHz 8-Bit OTP MCU 16KB EPROM TQFP-44
PIC17C44T-33I/PT

PIC17C44T-33I/PT - 33MHz 8-Bit OTP MCU 16KB EPROM TQFP-44

The Microchip Technology PIC17C44T-33I/PT is a high-performance 8-bit CMOS OTP (One-Time-Programmable) RISC microcontroller built on Microchip's PIC17C architecture, delivering 8.25 MIPS (121 ns instruction cycle) and shipping in a 44-pin TQFP (Thin Quad Flat Pack) industrial-grade package. It integrates 16 KB of EPROM program memory, 454 bytes of RAM, 33 digital I/O pins, and a peripheral set that includes an 8-bit timer/counter, a 16-bit timer/counter, a capture/compare/PWM module, a USART, and a watchdog timer. An 8-bit RISC microcontroller (also called an MCU) is a single-chip computer that integrates a CPU, program memory (ROM/EPROM/Flash), data RAM, I/O peripherals, and interrupt logic on one silicon die. The PIC17C family sits above Microchip's baseline PIC16C and PIC12C families in performance and addressing capability, while remaining source-compatible with PIC16C5X, PIC12CXXX, and PIC16CXX instruction-set extensions. PIC17C devices predate Microchip's PIC18F migration and are now classified as mature/last-time-buy legacy parts; per Microchip's product page, PIC18F442 is recommended as the modern functional successor. Key differentiating features include the 33 MHz maximum clock input (yielding the 121 ns instruction cycle), an instruction set of 58 single-word instructions, multi-source interrupt handling, and a wide 4.5 V to 5.5 V supply range. The 16 KB EPROM is windowless (OTP), which suits production runs but complicates field reprogramming. The TQFP-44 industrial-grade (-40C to +85C) form factor is suited to surface-mount assembly lines and provides 33 usable I/O pins plus oscillator, reset, and supply pins. Architecturally, the PIC17C44 uses a Harvard bus with separate program and data paths, a 16-bit instruction word, and an 8-bit data path. The OTP program memory is programmed via Microchip's ICSP (In-Circuit Serial Programming) protocol through the RB6 (clock) and RB7 (data) pins, eliminating the need for a separate PROM programmer socket in production. Typical applications include industrial motor control, HVAC fan and valve controllers, security alarm panels, automotive body electronics (non-AEC-Q100), vending machine controllers, and embedded control in legacy factory-automation systems. The 33 MHz clock supports time-deterministic control loops such as PID and quadrature decoding. When designing with this device, note that OTP memory cannot be erased in-circuit; plan for code freezes and a one-step-to-OTP programming flow. Migration to PIC18F442 (Flash-based, drop-in architectural upgrade) is recommended for new designs; legacy systems with validated firmware can continue to use PIC17C44T-33I/PT as long as supply is available. This page synthesizes distributor stock data, same-brand drop-in alternatives, design notes, and pinout references not found on any single manufacturer or distributor product page.

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PIC17C752-16/L - 8-bit 16MHz 16KB OTP MCU 50 I/O | Microchip
PIC17C752-16/L

PIC17C752-16/L - 8-bit 16MHz 16KB OTP MCU 50 I/O | Microchip

The Microchip Technology PIC17C752-16/L is an 8-bit CMOS OTP-based microcontroller from the PIC® 17C family, delivering 8.25 MIPS with a 121 ns instruction cycle at a 16 MHz clock input (33 MHz max). It integrates 16KB (8K x 16) of One-Time-Programmable program memory and 678 bytes of general-purpose RAM in a 68-pin PLCC (J-Lead) package measuring 24.23 x 24.23 mm, with up to 50 digital I/O pins. The -16 speed grade runs from a 4.5V to 5.5V supply, and the core is built around the classic PIC RISC architecture with only 58 single-word instructions, single-cycle hardware multiply, and upwards source compatibility with PIC16C5X, PIC12CXXX and PIC16CXX devices. An 8-bit microcontroller (MCU) is a small computer-on-a-chip that combines a CPU, RAM, non-volatile program memory and peripheral I/O on a single die. PIC microcontrollers use a Harvard RISC architecture - separate program and data buses and a fixed instruction set - which lets them complete most instructions in one clock cycle, making them well-suited to deterministic embedded control. Within the broader taxonomy they sit under microcontrollers -> microcomputer -> embedded processor -> semiconductor. The PIC17C family is the highest-performance 8-bit branch of the PIC family tree, intended as a stepping stone before migrating to PIC18 or dsPIC parts. Key features of the PIC17C752-16/L include an 8-level hardware stack, programmable code protection, power-on reset, brown-out reset, watchdog timer with its own on-chip RC oscillator, a hardware single-cycle 8x8 multiplier, and a versatile 16-bit timer/counter. Its 50 I/O lines can each be independently configured as input or output, and several peripheral functions (USART, SPI, I2C, capture/compare/PWM) are multiplexed onto those pins. Internal non-volatile program memory is OTP EPROM, suitable for low-volume production runs and for code that is rarely updated in the field. Typical applications include industrial control front-ends, sensor signal conditioning hubs, automotive body and chassis modules, instrumentation, point-of-sale terminals, motor control boards, and legacy embedded designs that need to remain on the original 8-bit PIC toolchain. The 50 I/O count and 16 MHz clock are ample for keypad scanning, LCD driving, UART-based device networking and simple PID loops without requiring an external DSP or 32-bit core. Designers should note that the PIC17C752 has been formally migrated by Microchip to the PIC18F6520, which offers Flash memory, a richer peripheral set and a familiar pin-compatible upgrade path. For new designs Microchip recommends the PIC18F6520; PIC17C752-16/L is appropriate for maintaining and replicating existing production hardware where the original PIC17 toolchain, code base, and OTP behavior must be preserved.

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PIC17C752-16E/L - 8-bit OTP MCU, 16KB, 50 I/O, 16MHz | Microchip
PIC17C752-16E/L

PIC17C752-16E/L - 8-bit OTP MCU, 16KB, 50 I/O, 16MHz | Microchip

The Microchip Technology PIC17C752-16E/L is an 8-bit high-performance OTP microcontroller from the PIC17C family, featuring 16KB of program memory (8K x 16 words), 678 bytes of RAM, and 50 digital I/O pins in a 68-pin PLCC (LCC-68, J-Lead) package. It operates at up to 16MHz clock speed with a 121ns instruction cycle and supports a supply voltage range of 4.5V to 5.5V. The "E" suffix denotes the extended industrial operating temperature range of -40C to +125C, while the "L" suffix indicates the PLCC-68 surface-mount J-leaded package. An OTP microcontroller is a single-chip computer with non-volatile one-time-programmable program memory, used in embedded control applications. The PIC17C752 family sits within the broader hierarchy of microcontroller -> embedded controller -> semiconductor IC. OTP memories are programmed once and retain their contents, making them well suited to high-volume mature products where firmware is finalized. The PIC17C architecture uses a 16-bit modified Harvard structure with separate program and data paths, giving it a higher code efficiency than 8-bit PIC16 contemporaries while keeping the classic PIC register-based programming model. Key features of the PIC17C752-16E/L include 58 single-word instructions with a 121ns single-cycle execution time (except program branches and table reads/writes which take two cycles), 12 channels of 10-bit Analog-to-Digital conversion, a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C, two USART ports, 4 capture inputs, 3 PWM outputs, and an external memory bus capable of addressing up to 64KB of external program memory and 64KB of external data memory. The device also includes multiple 16-bit timer/counters and a hardware multiply unit. The PIC17C752-16E/L integrates a high-performance RISC-like CPU with on-chip peripherals for industrial control, instrumentation, and motor control. The 10-bit ADC with 12 input channels supports direct connection to analog sensors, while the PWM and capture peripherals simplify closed-loop control of motors and power converters. The external memory bus allows program expansion beyond the internal 16KB OTP for applications requiring more code space. Typical applications for the PIC17C752-16E/L include industrial automation controllers, motor control drive electronics, uninterruptible power supply (UPS) control boards, security and access control panels, and instrumentation front-ends. Its 50 I/O pins and rich peripheral set make it particularly attractive for designs requiring many simultaneous sensors and actuators. When designing with this part, verify whether the project requires field reprogrammability: because OTP memory cannot be rewritten, all firmware revisions must be programmed before final assembly. Designers evaluating flash-based alternatives should consider the PIC18F family or dsPIC33EP series for new designs. This page synthesizes verified distributor data, drop-in same-package alternatives, and engineering guidance not found in the manufacturer datasheet alone.

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PIC17C752-16E/PT - 8-bit 16MHz 16KB OTP MCU 64-TQFP | Microchip
PIC17C752-16E/PT

PIC17C752-16E/PT - 8-bit 16MHz 16KB OTP MCU 64-TQFP | Microchip

The Microchip Technology PIC17C752-16E/PT is an 8-bit RISC CMOS OTP microcontroller with 16MHz core speed, 16KB (8K x 16) of One-Time-Programmable program memory, and 454 bytes of general-purpose RAM, housed in a 64-pin TQFP (10x10 mm) package. The device executes 58 single-word instructions in a single 121 ns cycle (with two-cycle branches and table reads/writes), delivering up to 8.25 MIPS throughput. It supports 50 digital I/O lines and operates from a 4.5V to 5.5V supply. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (ROM/EPROM/Flash/OTP), volatile data memory (RAM), and programmable I/O peripherals on one die. The PIC17C family sits at the high end of Microchip's classic 8-bit lineup, above the PIC16C and PIC12C series, and is source-compatible with the PIC16C5X, PIC12CXXX, and PIC16CXX devices. Within the broader taxonomy, the PIC17C is a Harvard-architecture RISC controller with an 8-bit data path, classified as a microcontroller -> embedded processor -> semiconductor IC. Key features of the PIC17C752-16E/PT include: four additional timers versus the PIC16C baseline, four capture inputs, three PWM outputs, a 12-channel 10-bit analog-to-digital (A/D) converter, external memory addressing, and a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C. Two USART channels provide asynchronous and synchronous serial communication, and the part supports up to 50 I/O pins from its 64-pin TQFP package. The 'E' suffix indicates the extended industrial temperature grade of -40C to +125C, while the 'PT' suffix denotes the plastic TQFP package. Architecturally, the PIC17C752 uses a 16-bit instruction word with an 8-bit data path. The Harvard bus separates program and data fetches so most instructions complete in one cycle. The 10-bit A/D converter, PWM modules, capture inputs, and USARTs are mapped to dedicated SFRs; developers access peripherals through banked register selects. External memory addressing extends program space beyond on-chip OTP for applications needing larger code. Typical applications include industrial control, automotive body and chassis modules, instrumentation with analog front ends, motor control with PWM, and embedded control requiring SPI/I2C peripheral expansion. The 12-channel 10-bit ADC suits multi-sensor monitoring, while the PWM and capture peripherals support closed-loop motor control. The part's automotive temperature rating and OTP-based supply model also fit pre-production and low-volume automotive programs. When designing with the PIC17C752-16E/PT, note that the 'E' (extended -40C to +125C) grade makes it the right choice for automotive or harsh-environment products, whereas the standard PIC17C752-16/PT (0C to +70C commercial) fits office and lab equipment. OTP memory requires programming at the factory or via a device programmer before solder reflow; plan the firmware supply chain accordingly. A newer pin-compatible Flash alternative, PIC18F6520, is recommended for new designs. This page synthesizes distributor pricing, drop-in Microchip same-family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC17C752-16I/L - 8-Bit 16MHz OTP MCU, 16KB, 50 I/O | Microchip
PIC17C752-16I/L

PIC17C752-16I/L - 8-Bit 16MHz OTP MCU, 16KB, 50 I/O | Microchip

The Microchip PIC17C752-16I/L is a high-performance 8-bit CMOS OTP microcontroller from the PIC17C family, delivering 8.25 MIPS throughput (121 ns instruction cycle) at 16 MHz clock input, housed in a 68-pin PLCC (LCC-68, 24.23x24.23 mm) package. Key specifications include 16 KB (8K x 16) of One-Time-Programmable (OTP) program memory, 678 bytes of RAM, and 50 digital I/O pins, with an instruction set of only 58 single-word instructions for rapid development. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (here OTP), volatile data memory (RAM), and programmable peripherals into one IC. The PIC17C family sits above the PIC16 mid-range and below the PIC18 in Microchip's 8-bit lineup, offering the highest 8-bit performance and the largest I/O count for legacy designs. MCUs in this class are the decision-making core of an embedded system, executing firmware that controls sensor inputs, actuators, communication buses, and user interfaces in industrial, automotive, and consumer products. OTP variants are intended for mature, fixed-production applications where code is finalized at manufacturing time. Key features include 25 input-only and bidirectional I/O lines organized into ports, an on-chip hardware multiplier for single-cycle 8x8 operations, and an instruction pipeline that supports two-cycle branches and table reads/writes. The RISC architecture and 16-bit instruction word improve code density over 8-bit instruction MCUs, while a programmable code-protection bit secures on-chip firmware. The wide operating voltage range of 4.5V to 5.5V is suitable for 5V industrial systems, and the -40C to +85C industrial temperature rating supports indoor and factory environments. Typical applications include industrial control panels, motor drive interfaces, instrumentation front-ends, and embedded control systems that migrated from earlier PIC17C designs. The PLCC-68 socketed package also supports prototyping and field-replaceable modules, a common pattern in legacy industrial installations. Designers should note the -16 speed suffix (16 MHz) corresponds to a 33 MHz oscillator input; higher marking suffixes do not imply higher supply tolerance. OTP memory cannot be reprogrammed, so engineers should prototype with the equivalent UV-erasable PIC17C752JW windowed part or the flash-based PIC18F6520 recommended by Microchip for new designs. This page consolidates distributor pricing, drop-in compatible alternatives, and practical design considerations for engineers maintaining PIC17C752 inventory.

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PIC17C752-16I/PT - 8-bit OTP MCU 16KB EPROM 50 I/O | Microchip
PIC17C752-16I/PT

PIC17C752-16I/PT - 8-bit OTP MCU 16KB EPROM 50 I/O | Microchip

The Microchip PIC17C752-16I/PT is a high-performance 8-bit CMOS EPROM microcontroller delivering 8.25 MIPS performance with a 16 MHz oscillator input and 121 ns instruction cycle, packaged in a 64-pin TQFP (10x10 mm) surface-mount form factor. It integrates 16 KB of OTP program memory, 678 bytes of RAM, 50 digital I/O lines, and a 12-channel 10-bit Analog-to-Digital converter on-chip. According to the Microchip product page, the PIC17C752 family supports external memory addressing, a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C, two USARTs, and additional timers including four capture and three PWM functions. A PIC microcontroller (Programmable Interface Controller) is a family of 8/16/32-bit RISC microcontrollers built around a Harvard architecture with separate program and data memory buses, designed for embedded control applications. PIC MCUs sit within the broader category hierarchy of microcontroller -> embedded processor -> semiconductor device, and the PIC17C sub-family is one of Microchip's high-performance 8-bit lines positioned between the baseline PIC16 and the 16-bit dsPIC/PIC24 families. The "C" suffix denotes EPROM/OTP program memory (One-Time Programmable), which is well suited to prototyping and low-volume production. Key features include only 58 single-word instructions for fast code ramp-up, single-cycle hardware multiplication, dual-cycle program branches and table read/write operations, four capture inputs for timing measurements, three PWM outputs for motor or power control, and an external memory bus that allows the 16 KB of internal program memory to be expanded. The -I suffix denotes the industrial operating temperature range, allowing the device to operate from -40C to +85C ambient. Typical applications include industrial automation controllers, motor control systems, HVAC interface panels, security and access-control panels, instrumentation front-ends, and sensor aggregation hubs where the on-chip 10-bit ADC, PWM, and capture peripherals reduce total BOM. Microchip explicitly recommends the newer PIC18F6520 as the modern migration path for new designs, indicating that the PIC17C752 is now a mature legacy line maintained primarily for installed-base designs. When designing with this part, ensure the EPROM windowed parts (JW package) are reserved only for prototype development because once programmed under the UV-erasable window they cannot be reprogrammed without erasure. Use the on-chip UART and SSP peripherals to offload communication and reduce firmware complexity, and provide adequate decoupling (0.1 uF + 10 uF bulk) near both VDD pins to support the high-current transients of the EPROM read and the ADC conversion clock. This page consolidates distributor pricing, drop-in same-package alternatives from the PIC17C family, and practical design notes not found on the manufacturer product page.

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PIC17C752-33/L - 8-Bit 33MHz OTP MCU 16KB 50 I/O | Microchip
PIC17C752-33/L

PIC17C752-33/L - 8-Bit 33MHz OTP MCU 16KB 50 I/O | Microchip

The Microchip Technology PIC17C752-33/L is an 8-bit CMOS EPROM-based microcontroller from the PIC17C family, operating at 33 MHz with 16 KB (8K x 16) of OTP program memory and 678 bytes of RAM, housed in a 68-pin PLCC (24.23 x 24.23 mm, J-lead) package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and configurable I/O peripherals. The PIC17C family represents Microchip's high-end 8-bit architecture, positioned between baseline PIC16 parts and 16-bit dsPIC/PIC24 devices, and is typically used in complex 8-bit embedded control applications where 16-bit performance is not required. PIC microcontrollers are widely deployed in industrial control, automotive subsystems, white goods, and instrumentation, and the PIC17C752 sits at the upper end of that 8-bit line with a Harvard RISC core, 25-stage pipeline, and hardware multiplier. Key features include 50 digital I/O lines, 12 channels of 10-bit A/D conversion, three PWM outputs, four capture inputs, multiple timer modules, an external memory interface, and a synchronous serial port configurable for either 3-wire SPI or 2-wire I2C communication. Two USART modules also support asynchronous and synchronous serial links. The core delivers approximately 8.25 MIPS of throughput at 33 MHz (121 ns single-cycle instruction time, except for program branches and table reads/writes which take two cycles), with only 58 single-word instructions to learn, enabling fast firmware development. The architecture combines a Harvard memory layout (separate program and data buses), an 8-bit ALU, a hardware 8x8 multiplier, and wide 16-bit instruction words fetched in a single cycle. The 68-pin PLCC package provides ample pins for the 50 I/O, multiple serial interfaces, A/D channels, PWM/capture signals, and external memory bus, while keeping the die in a socket-friendly through-hole-friendly format for industrial and legacy designs. Typical applications include industrial process control, motor control with PWM and feedback capture, instrumentation with on-chip A/D, automotive body and accessory ECUs, white-goods appliance control, security panels, and embedded-control upgrades for legacy 8051 systems where higher throughput is needed without migrating to 16-bit cores. When designing with PIC17C752-33/L, ensure the 4.5-5.5 V supply is well decoupled and the 33 MHz oscillator layout follows Microchip's oscillator guidelines. The OTP program memory means firmware is masked in production; for field upgrades or prototyping, consider the PIC17C752-33/L windowed (JW) or the flash-based PIC18F6520 that Microchip recommends as the newer migration path. This page synthesizes distributor stock and pricing, pin-compatible drop-in alternatives from the PIC17C family, comparison parameters versus PIC18F migration parts, and practical design notes not consolidated in the manufacturer datasheet.

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PIC17C752-33/PT - 8-bit 33MHz 16KB OTP MCU 64-TQFP | Microchip
PIC17C752-33/PT

PIC17C752-33/PT - 8-bit 33MHz 16KB OTP MCU 64-TQFP | Microchip

The Microchip Technology PIC17C752-33/PT is a high-performance 8-bit CMOS EPROM microcontroller operating at up to 33 MHz with a 121 ns instruction cycle, packaged in a 64-pin TQFP (10x10 mm). It integrates 16 KB of one-time-programmable (OTP) program memory (8K x 16 words), 678 bytes of RAM, 50 digital I/O lines, and a 10-bit analog-to-digital converter (ADC) on a single die. The device operates from a 4.5 V to 5.5 V supply and is rated for the commercial 0 C to +70 C temperature range, targeting cost-sensitive embedded control applications. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, on-chip program memory, on-chip RAM, and a set of peripherals such as timers, communication ports, and ADCs. Microcontrollers sit within the broader hierarchy of microprocessors -> microcontrollers -> 8-bit microcontrollers -> PIC architecture, serving as the lowest-level programmable element that reads sensors, drives actuators, and orchestrates real-time control loops without requiring an external operating system. PIC devices are RISC-based, Harvard-architecture MCUs well known for deterministic single-cycle instruction execution and a small, easy-to-learn instruction set. Key features of the PIC17C752-33/PT include 8.25 MIPS peak throughput, a single-cycle 8x8 hardware multiplier, dual-capture/compare/PWM modules, a USART, an MSSP (SPI/I2C) peripheral, 12 channels of 10-bit ADC, and an 8-level deep hardware stack. The 17C-series instruction set extends the baseline PIC16C5X/PIC12CXXX/PIC16CXX instruction set with additional addressing modes and a hardware multiplier, while remaining upwards source-compatible so existing code can be re-targeted with minimal porting. Architecturally, the PIC17C752 uses a 16-bit-wide instruction word fetched from OTP EPROM each cycle, an 8-bit data bus to RAM, and a 10-bit ADC front end. The 33 MHz oscillator combined with the 4:1 internal clock divider produces the 121 ns instruction cycle quoted in the datasheet, giving roughly 8 MIPS sustained throughput with deterministic interrupt latency ideal for motor control and instrumentation. Typical applications include industrial control panels, motor drive front-ends, instrumentation front-ends with on-chip ADC, smart sensor hubs, and embedded control boards where OTP programmability is acceptable for low- to mid-volume production. The wide I/O count (50 pins) and on-chip ADC also make it suitable for HVAC controllers and appliance subsystems. When designing with this part, ensure the oscillator loop is laid out per Microchip's recommended guidelines to avoid noise coupling into the analog AVdd/AVss pins, and provide adequate bulk decoupling near the IC. Note that the PIC17C752 family has been superseded by the PIC18F family; for new designs the manufacturer recommends migrating to PIC18F6520. This page consolidates current distributor pricing for the PIC17C752-33/PT, drop-in OTP and Flash alternatives in the same TQFP-64 footprint, application guidance, and pin-level design notes that go beyond the bare datasheet specification list.

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PIC17C752-33E/L - 8-bit OTP MCU, 33MHz, 16KB EPROM, 68-PLCC | Microchip
PIC17C752-33E/L

PIC17C752-33E/L - 8-bit OTP MCU, 33MHz, 16KB EPROM, 68-PLCC | Microchip

The Microchip Technology PIC17C752-33E/L is a high-performance 8-bit CMOS OTP microcontroller from the PIC17C family, delivering 8.25 MIPS at a 33 MHz clock speed with a 121 ns instruction cycle. It integrates 16 KB of One-Time-Programmable (OTP) program memory, 678 bytes of RAM, and 50 digital I/O lines in a 68-pin PLCC (Plastic Leaded Chip Carrier) package. The PIC17 RISC architecture provides 58 single-word instructions, all executing in a single cycle except program branches and table reads/writes which take two cycles. A microcontroller (MCU) is a single-chip computer containing a processor core, memory, and programmable I/O peripherals, used to embed control logic in everything from appliances to industrial controllers. Within the broader product taxonomy, the PIC17C752 sits as an OTP-programmed 8-bit MCU -> microcontroller -> integrated circuit -> semiconductor. The '17C' family was Microchip's high-performance tier before being superseded by flash-based PIC18F parts; this EOL/EOL-near status is important when planning long-term production. Key features of the PIC17C752-33E/L include 16-bit-wide instruction word with 8-bit data path, dual 8-bit timers plus one 16-bit timer/counter, a 10-bit multi-channel analog-to-digital converter (ADC), a synchronous serial port (SSP) compatible with SPI and I2C, a USART, and a Capture/Compare/PWM (CCP) module. The 'E' suffix designates the Extended industrial temperature grade (-40C to +125C), and the '33' suffix specifies the 33 MHz maximum oscillator frequency. Supply voltage range is 4.5 V to 5.5 V. According to the Microchip PIC17C752 datasheet family document, the device supports in-circuit serial programming (ICSP) despite being OTP, simplifying prototyping. The device is engineered around an enhanced Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and operand access. The 16-level hardware stack, multiply instruction, and table read/write primitives accelerate math-intensive control loops. Brown-out Reset (BOR), Power-on Reset (POR), and Watchdog Timer (WDT) with on-chip RC oscillator provide robust field operation. Interrupt handling supports 11 sources with prioritized vectoring. Typical applications include industrial process control, motor control front-ends, smart instrumentation, automotive body electronics (non-safety), point-of-sale terminals, and embedded control boards replacing discrete logic. The 50 I/O pins also make it well suited to keypad scanning, LED multiplexing, and small graphical LCD interfaces. Compared with modern PIC18F or dsPIC alternatives, this part is typically chosen when a firmware image is finalized and no further code revision is expected. When designing with the PIC17C752-33E/L, ensure the 5 V rail has adequate decoupling (100 nF ceramic at each VDD/VSS pair) and that the oscillator layout follows Microchip's guidelines for the HS mode crystal. Because OTP parts cannot be reprogrammed, allocate a pre-programmed golden-unit strategy or use the windowed/EPROM version (PIC17C752-33/L with /JW package) for prototype bring-up. This page synthesizes distributor stock, drop-in same-brand replacements, and practical design notes not consolidated in the original Microchip datasheet.

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PIC17C752-33E/PT - 8-Bit 33MHz OTP MCU 16KB 64-TQFP | Microchip
PIC17C752-33E/PT

PIC17C752-33E/PT - 8-Bit 33MHz OTP MCU 16KB 64-TQFP | Microchip

The Microchip Technology PIC17C752-33E/PT is a high-performance 8-bit PIC microcontroller featuring 33 MHz operation (8.25 MIPS with 121 ns instruction execution), 16 KB of one-time-programmable (OTP) program memory organized as 8K x 16, and 454 bytes of RAM, housed in a 64-pin TQFP (10x10 mm) package. It belongs to the PIC17C family, which sits at the top of Microchip's classic 8-bit portfolio and executes the entire instruction set in a single cycle except for program branches and table reads/writes (two cycles). A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (ROM/Flash/OTP), volatile data memory (RAM), and programmable I/O peripherals on one die. The PIC17C family belongs to the broader hierarchy: 8-bit microcontroller -> RISC MCU -> embedded controller -> semiconductor. PIC17C752 specifically extends the PIC16C5X/PIC12CXXX/PIC16CXX instruction set upward while remaining source-compatible, providing higher performance for complex embedded designs. Key features include 50 digital I/O lines, an 8-channel 10-bit A/D converter, multiple timer modules, a USART, an I2C/SPI peripheral interface, and 16-bit-wide data bus architecture. The OTP memory allows one-time programming during manufacturing, making this part suited to production-grade embedded designs that have stabilized firmware. The 'E' suffix denotes the extended industrial temperature grade (-40C to +125C), and the '33' suffix indicates the 33 MHz maximum clock frequency. The device is built on a CMOS process that delivers low power consumption while sustaining 8.25 MIPS throughput, which is roughly 4x faster than PIC16F contemporaries of that era. Typical applications include industrial control systems, automotive embedded modules (within temperature-grade limits), motor control front-ends, sensor signal conditioning hubs, and legacy embedded products that migrated from PIC16 to PIC17 architecture. Designers also use the PIC17C752 in building automation and instrumentation front panels where deterministic 121 ns instruction timing simplifies real-time control loops. When designing with this device, note that OTP memory cannot be re-programmed in-circuit; the firmware must be fully validated before committing to a production lot. Designers targeting long product lifecycles should evaluate the recommended PIC18F6520 successor or PIC18F equivalents, as the PIC17C family has been superseded by PIC18F devices with Flash memory and comparable or higher performance. This page synthesizes distributor pricing, same-package drop-in alternatives, application guidance, and design notes not assembled in the manufacturer datasheet. Specifications, lifecycle status, and 2026 distributor stock data are aggregated below to support procurement and BOM decisions for engineers still maintaining PIC17C-based designs.

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