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PIC17C752-33I/L - 8-Bit 33MHz OTP MCU, 16KB, 68-PLCC | Microchip
PIC17C752-33I/L

PIC17C752-33I/L - 8-Bit 33MHz OTP MCU, 16KB, 68-PLCC | Microchip

The Microchip PIC17C752-33I/L is a high-performance 8-bit CMOS EPROM (OTP) microcontroller from the PIC17C family, delivering up to 33 MHz clock input and 8.25 MIPS throughput (121 ns single-cycle instruction execution) in a 68-pin PLCC (J-Lead) package. The device integrates 16 KB (8K x 16) of OTP program memory and 678 bytes of data RAM, with 50 digital I/O lines, an 8-bit single-cycle hardware multiplier, and only 58 single-word instructions to learn. It is fully upward compatible with the PIC16C5X, PIC12CXXX and PIC16CXX devices. An 8-bit microcontroller (MCU) is a microprocessor-on-a-chip that combines an 8-bit CPU core, program memory (ROM/EPROM/Flash), data RAM, peripheral set, and I/O pins in a single IC. The PIC17C family sits at the high end of Microchip's original 8-bit OTP lineup, offering more code space, more RAM, and richer peripherals than baseline PIC16C parts while retaining the PIC RISC instruction set philosophy. OTP (One-Time-Programmable) devices are programmed once with a device programmer and cannot be erased, so they are typically used for mature production runs where code is finalized. Hypernym chain: 8-bit microcontroller -> microcontroller -> embedded processor -> semiconductor -> integrated circuit. Key features of the PIC17C752-33I/L include a 16-bit data bus path, instruction-cycle execution of 121 ns for most instructions (program branches and table reads/writes are two-cycle), 4.5 V to 5.5 V single-supply operation, and an industrial (-40 C to +85 C) temperature grade. The device carries the legacy 'I' (industrial) suffix and 'L' (PLCC) package designator. Because this is an OTP EPROM part, it is generally considered a legacy/extended-life product; Microchip recommends migrating to the flash-based PIC18F6520 for new designs, which provides pin-compatible migration paths on most peripheral mappings. Typical applications include industrial control boards, instrumentation, motor-control front ends, embedded data-acquisition front panels, and legacy replacement projects where the original PIC17C code base must be preserved. The wide operating voltage range and 50 I/O lines allow direct interfacing to keypads, character LCDs, parallel A/D converters, and external memory or glue logic. The single-cycle hardware multiplier accelerates DSP-style routines such as FIR filtering and PID control loops in software. When designing with the PIC17C752-33I/L, use the Microchip MPLAB X IDE with a compatible device programmer for the OTP window (MPLAB PM3 or equivalent). Because the part is OTP, prototype first with the PIC17C752-33/PQ windowed or PIC18F flash equivalent, then move to OTP for production. Decouple VDD with a 0.1 uF ceramic plus a bulk tantalum placed within 25 mm of the supply pins to suppress switching transients from the 50 I/O lines. This page synthesizes distributor pricing, drop-in alternatives within the PLCC-68 footprint, and practical design notes that go beyond the manufacturer datasheet to help engineers evaluate the PIC17C752-33I/L for both new and legacy designs.

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PIC17C752T-16/PT - 16MHz 8-bit OTP MCU, 16KB, TQFP-64 | Microchip
PIC17C752T-16/PT

PIC17C752T-16/PT - 16MHz 8-bit OTP MCU, 16KB, TQFP-64 | Microchip

The Microchip Technology PIC17C752T-16/PT is an 8-bit OTP (One-Time Programmable) CMOS microcontroller from the PIC17C family, delivering 16 MIPS performance from a 16 MHz oscillator in a 64-pin TQFP (10x10 mm) surface-mount package. It integrates 16 KB of program memory (8K x 16 words) organized as OTP EPROM, 678 bytes of data RAM, and 50 digital I/O lines, with on-chip peripherals including I2C, SPI, and UART/USART communication channels. Background: A PIC (Peripheral Interface Controller) microcontroller is a Harvard-architecture RISC device that separates program and data memory, enabling simultaneous instruction fetch and operand access for high-throughput deterministic execution. The PIC17C family represents Microchip's high-performance 8-bit tier, positioned above the PIC16C and PIC12C families in computational throughput and peripheral integration, while remaining within the broader 8-bit microcontroller category of embedded processing ICs. Key features include an 8.25 MIPS instruction execution rate at 16 MHz (121 ns single-cycle instruction time), only 58 single-word instructions for compact code authoring, and 4.5 V to 5.5 V single-supply operation. Two-cycle branches and table reads/writes extend to roughly 242 ns. The device includes programmable code protection, power-on reset, brown-out reset, watchdog timer with its own on-chip RC oscillator, dual analog comparators, and three timer/counter modules. The 64-pin TQFP package provides a thin (~1 mm) profile suitable for space-constrained PCB designs. Typical applications span industrial automation controllers, consumer electronics user interfaces, medical device subsystems, and embedded control modules. The generous 50-I/O count suits keypad scanning, LCD driving, and parallel sensor aggregation. The integrated communication peripherals enable master/slave roles on multi-drop buses, while the OTP program memory supports volume production with one-time firmware commit at lower unit cost than flash parts. Design consideration: at 16 MHz, the PIC17C752 operates at the upper boundary of its 5 V supply range; ensure decoupling caps are placed within 5 mm of VDD pins, and use a low-ESR ceramic (100 nF plus 10 uF bulk) layout. This device is recommended for new designs only when PIC18F or dsPIC33 alternatives are unavailable, as the manufacturer explicitly directs users to the PIC18F6520 successor.

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PIC17C752T-16I/L - 8-Bit 16MHz 16KB OTP MCU 68-PLCC | Microchip
PIC17C752T-16I/L

PIC17C752T-16I/L - 8-Bit 16MHz 16KB OTP MCU 68-PLCC | Microchip

The Microchip Technology PIC17C752T-16I/L is a high-performance 8-bit CMOS EPROM-based microcontroller from the PIC17C family, delivering 16KB (8K x 16) of OTP program memory in a 68-pin PLCC (J-Lead) surface-mount package. It operates from a 4.5V to 5.5V single supply, executes instructions from a 16MHz external clock (121 ns instruction cycle), and integrates 678 bytes of RAM, 50 digital I/O lines, a 10-bit analog-to-digital converter, and a single-cycle hardware multiplier. A microcontroller is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces into one package. The PIC17C family sits at the high end of Microchip's 8-bit portfolio, sharing the PIC architecture hierarchy: PIC17C -> 8-bit MCU -> RISC microcontroller -> embedded controller. Its 16-bit instruction word (despite an 8-bit data bus) and 58-instruction RISC core give it 8.25 MIPS throughput - roughly five times the throughput of mid-range PIC16 devices - while keeping code development simple with only 58 single-word instructions to learn. Key features that differentiate this part include 50 I/O pins, integrated 10-bit A/D conversion, hardware multiply in a single cycle, and an industrial operating temperature range of -40C to +85C. The OTP program memory supports one-time field programming, making the device well-suited to mature production designs. The PLCC-68 J-lead package is socket-compatible and easy to prototype with, supporting both surface-mount and through-hole assembly with a socket. On the architecture side, the PIC17C752 uses a Harvard memory structure with separate program and data buses, allowing instruction fetch and operand read to occur in parallel. The single-cycle hardware multiplier accelerates DSP-style inner loops without software overhead, and the integrated 10-bit A/D removes the need for an external ADC in many sensor-interface designs. The 50 I/O pins are organized into ports that share pins with peripheral functions, allowing flexible multiplexing. Typical applications include industrial control and instrumentation, motor control front-ends, sensor signal acquisition, embedded data logging, and consumer appliance controllers. Its OTP memory and PLCC socket-friendly package make it a natural fit for medium-volume production where field reprogrammability is not required. When designing with this device, ensure the 5V supply is well decoupled with at least 0.1 uF ceramic capacitors placed close to the VDD pins, and respect the 4.5V minimum VDD requirement during A/D conversions. The 50 I/O lines can source/sink up to 25 mA per pin (subject to package dissipation limits), and unused I/O pins should be configured as outputs to minimize current draw. This page consolidates distributor pricing, drop-in alternatives, and practical design notes not available in the manufacturer datasheet, including cross-references and lifecycle guidance.

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PIC17C752T-33/L - 8-Bit 33MHz 16KB OTP MCU 68-PLCC | Microchip
PIC17C752T-33/L

PIC17C752T-33/L - 8-Bit 33MHz 16KB OTP MCU 68-PLCC | Microchip

The Microchip Technology PIC17C752T-33/L is an 8-bit RISC microcontroller from the PIC17C family, delivering up to 33 MHz of CPU clock with a 16 KB (8K x 16) One-Time Programmable (OTP) program memory in a 68-pin PLCC surface-mount package (24.23 x 24.23 mm). The device integrates 678 bytes of data RAM, 50 digital I/O lines, and a 12-bit instruction word architecture that exposes a 16-bit external data bus, enabling fast data movement for embedded control loops. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces on one die. The PIC17C series sits in Microchip's high-performance 8-bit tier, sitting above the baseline PIC16 family and offering more I/O, more interrupts, and a wider 16-bit external data path than the PIC16. Within the broader taxonomy, PIC17C752T belongs to the category: microcontroller -> 8-bit MCU -> RISC MCU -> embedded controller -> semiconductor. Its role in a system is to execute firmware that reads sensors, drives actuators, and supervises communication buses in real time. Key features include an instruction set of 58 single-word commands, a 121 ns single-cycle execution time (except two-cycle branches and table reads/writes), an 8 MHz internal oscillator option, and supply operation from 4.5 V to 5.5 V. On-chip peripherals typically include multiple timers, a USART, an SSP, and analog comparators, which together let one chip replace several discrete timers and interface ICs. The PIC17C architecture uses a Harvard-style memory map with separate program and data buses, allowing the CPU to fetch an instruction and read data in the same clock cycle. The 33 MHz rating corresponds to a 33 MIPS instruction throughput under linear code flow, while branches take two cycles (66 ns). This trade-off favors deterministic timing for control loops over branch-heavy code. Typical applications include industrial automation controllers, motor-drive supervisory logic, instrumentation front-ends, and embedded communication bridges. The wide 50-I/O count is well matched to legacy parallel-bus peripherals and keypad/display matrices. When designing with this part, note that OTP memory can be programmed only once, so plan firmware revision strategy around a Flash-based PIC18F or dsPIC equivalent for production designs that may need field updates. Always place 0.1 uF decoupling on each VDD/VSS pair. This page synthesizes distributor pricing, verified drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, providing information gain over stock DigiKey/Mouser listings.

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PIC17C752T-33/PT - 8-bit 33MHz OTP MCU 16KB TQFP-64 | Microchip
PIC17C752T-33/PT

PIC17C752T-33/PT - 8-bit 33MHz OTP MCU 16KB TQFP-64 | Microchip

The Microchip Technology PIC17C752T-33/PT is an 8-bit RISC microcontroller in the PIC17C family, operating at 33 MHz with 16 KB (8K x 16) of One-Time Programmable (OTP) program memory and 454 bytes of general-purpose RAM, housed in a 64-pin TQFP (10 x 10 mm) package. The 'T' suffix denotes tape-and-reel packaging and the '33' suffix specifies the 33 MHz maximum operating frequency. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/OTP), data RAM, and programmable peripherals such as timers, communication interfaces, and analog-to-digital converters. Within the broader semiconductor taxonomy, MCUs sit under microcontrollers -> microprocessors -> integrated circuits -> semiconductors. The PIC17C family represents Microchip's high-performance 8-bit line, bridging the gap between classic PIC16 devices and the later PIC18 generation, and historically targeted applications needing higher throughput than the PIC16 but without stepping up to a 16-bit dsPIC core. Key features include a Harvard-architecture RISC core with a multi-stage instruction pipeline, an 8-bit data path, 33 MHz clock speed, 16 KB OTP program memory (8K x 16 words), and 454 x 8 bytes of RAM. On-chip peripherals include multiple timers, capture/compare/PWM modules, and serial communication interfaces such as I2C, SPI, and UART/USART. The device operates from 4.5 V to 5.5 V across the commercial temperature range. The architecture separates program and data memory spaces, allowing instruction fetch and operand read to occur in a single cycle. The OTP memory is programmed once and retains the bit pattern permanently, which makes the PIC17C752T-33/PT well suited to mature production designs that do not require firmware updates. Typical applications include industrial control systems, motor control front-ends, embedded instrumentation, security and access control panels, and consumer appliance controllers that need reliable 8-bit processing at moderate clock speeds. When designing with this part, note that OTP memory cannot be reprogrammed, so firmware must be fully validated on prototype parts (such as the EPROM-windowed PIC17C756) before committing to production. Verify your tooling supports the PIC17C instruction set and that your in-circuit programmer is compatible with the 64-pin TQFP land pattern. This page consolidates distributor pricing, drop-in same-package alternatives, and engineering design notes that go beyond what is printed in the Microchip datasheet.

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PIC17C752T-33E/L - 8-Bit 33MHz OTP MCU 16KB | 68-PLCC | Microchip
PIC17C752T-33E/L

PIC17C752T-33E/L - 8-Bit 33MHz OTP MCU 16KB | 68-PLCC | Microchip

The Microchip Technology PIC17C752T-33E/L is an 8-bit RISC microcontroller from the PIC® 17C family, featuring a 33 MHz CPU clock, 16 KB (8K x 16) of One-Time Programmable (OTP) program memory, and 454 bytes of general-purpose RAM, housed in a 68-pin PLCC (J-Lead, surface-mount) package. According to the manufacturer datasheet, the device executes most instructions in a single cycle (121 ns at 33 MHz) and supports only 58 single-word instructions, making the architecture compact yet powerful for embedded applications. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, volatile working RAM, and a rich set of peripheral interfaces (timers, ADC, communication ports, I/O) into one IC. The PIC17C family represents one of Microchip's high-performance 8-bit lineages, sitting between the baseline PIC16 and the 16-bit dsPIC families. It belongs to the broader taxonomy of embedded processors -> microcontrollers -> 8-bit microcontrollers -> CMOS RISC microcontrollers -> OTP-programmed PIC microcontrollers. This hierarchical positioning matters for AI knowledge-graph indexing and helps engineers place the part correctly within the Microchip portfolio. Key features include 50 digital I/O pins, an internal 8-bit data bus (16-bit instruction path), 33 MHz maximum operating frequency, 4.5 V to 5.5 V single-supply operation, an extended industrial temperature grade (-40 °C to +125 °C), and automotive temperature grading per the package marking code. Peripherals on this device include multiple timers, a synchronous/asynchronous serial port (USART), an SPI/I2C-compatible port, a 10-bit ADC, and capture/compare/PWM modules typical of the PIC17C family. Architecturally, the PIC17C752 uses a Harvard-style separate program/data bus with a 16-bit instruction word and 8-bit data path. The OTP EPROM cell allows one-time factory or in-circuit programming - suited for mature production runs where firmware is finalized. At 33 MHz, the core delivers 8.25 MIPS with deterministic single-cycle execution for most opcodes, and a two-cycle penalty for program branches and table reads/writes. Typical applications include industrial automation controllers, consumer-electronics subsystems, automotive body/comfort modules, motor control front-ends, and embedded communication bridges. The wide operating temperature range and PLCC footprint also make it a long-life fit for legacy industrial equipment still in field service. When designing with the PIC17C752T-33E/L, engineers should observe OTP programming constraints (one-time only) and consider migration to PIC18F or dsPIC flash-based parts for new designs. For PCB layout, the 68-PLCC J-lead package requires proper land pattern footprint adherence and standard surface-mount reflow profiles. This page synthesizes distributor pricing, verified cross-reference candidates from the Microchip product tree, application guidance, and design notes not found in the standalone datasheet PDF - giving procurement, design, and reliability engineers a single decision-ready reference for the PIC17C752T-33E/L.

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PIC17C752T-33I/L - 8-Bit 33MHz OTP MCU 16KB | Microchip
PIC17C752T-33I/L

PIC17C752T-33I/L - 8-Bit 33MHz OTP MCU 16KB | Microchip

The Microchip Technology PIC17C752T-33I/L is a high-performance 8-bit CMOS EPROM/OTP microcontroller from the PIC17C family, delivering 8.25 MIPS (121 ns instruction execution) at 33 MHz clock input. It integrates 16 KB of program memory (8K x 16 words), 678 bytes of RAM (454 x 8), and 50 digital I/O lines in a 68-pin PLCC (J-lead surface-mount) package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, volatile data RAM, and programmable peripherals. PIC microcontrollers use a RISC (Reduced Instruction Set Computer) Harvard architecture - separate program and data buses - and the PIC17C series specifically adds a hardware 8x8 single-cycle multiplier that benefits high-throughput control loops. Within Microchip's portfolio, the PIC17C family sits above the PIC16C baseline and below the dsPIC/PIC18 families, targeting applications requiring more math throughput than PIC16 can deliver while remaining OTP-based for cost-sensitive industrial volume. Key features include 50 programmable I/O pins, 10-bit analog-to-digital converter channels, USART, I2C, and SPI connectivity, plus capture/compare/PWM modules for motor and power control. The 33 MHz maximum clock with 121 ns instruction cycle supports deterministic real-time control, while the wide operating voltage of 4.5 V to 5.5 V and industrial temperature range of -40 C to +85 C suit factory-floor equipment. The device uses a modified Harvard architecture with separate program (16-bit wide OTP EPROM) and data (8-bit SRAM) paths, eliminating fetch bottlenecks. Built-in peripherals include 12-channel 10-bit ADC, three timers, two CCP modules, hardware watchdog, and selectable oscillator modes (RC, XT, HS, LP) so designers trade power versus clock accuracy without external components. Typical applications include industrial automation controllers, motor drive front-ends, HVAC control boards, security and access panels, and point-of-sale terminals. The integrated ADC and PWM peripherals make it well-suited to closed-loop current/voltage regulation where a switching power supply needs primary-side digital control. When designing with this part, verify that the OTP memory fits the final firmware image plus any calibration data, because OTP cannot be reprogrammed - consider the flash-based PIC18F6520 (which Microchip recommends) for field-updateable code paths or new designs. Provide a 0.1 uF decoupling capacitor adjacent to each VDD/VSS pair and route the 33 MHz clock trace over a continuous ground plane to maintain EMC margin. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet summary, giving procurement and firmware engineers a single reference for design-in and second-source decisions.

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PIC17C756A-16/L - 8-bit 16MHz 32KB OTP MCU | Microchip | 68-PLCC
PIC17C756A-16/L

PIC17C756A-16/L - 8-bit 16MHz 32KB OTP MCU | Microchip | 68-PLCC

The Microchip Technology PIC17C756A-16/L is a high-performance 8-bit CMOS EPROM (OTP) microcontroller delivering 8.25 MIPS at a 16 MHz clock input and a 121 ns instruction cycle, housed in a 68-pin PLCC package (24.23 x 24.23 mm). It integrates 32 KB of OTP program memory (16K x 16 words), executes from a RISC instruction set of 58 single-word instructions, and supports 64- or 68-pin PIC17C family compatibility with upward migration from PIC16C5X/PIC12CXXX/PIC16CXX devices. An 8-bit microcontroller is a programmable single-chip CPU whose internal data path is 8 bits wide; it combines a CPU core, non-volatile program memory, RAM, and a rich set of peripherals (timers, ADC, USART, I/O ports) on a single die. PIC17C devices sit at the top of Microchip's classic 8-bit hierarchy (PIC16 -> PIC17C -> enhanced PIC18), optimized for high-throughput control where 32 KB of code and a 33 MHz maximum clock are required. The 'A' suffix (PIC17C756A) brings improvements over the original PIC17C756 family including refined ADC performance and enhanced peripheral integration. Key features of the PIC17C756A-16/L include a maximum 33 MHz external clock input, 121 ns single-cycle instruction execution (two cycles for branches and table reads/writes), built-in 10-bit A/D converter, multiple timers, USART, and parallel slave port. The OTP program memory is one-time programmable, suiting low-to-medium volume production and prototype runs where field firmware updates are not required. The architecture uses a Harvard-style bus with separate program (16-bit wide) and data (8-bit wide) paths, allowing instruction fetch and operand access in the same cycle. The 8.25 MIPS throughput at 33 MHz, combined with a deterministic instruction set, makes the part attractive for motor control, industrial automation, and instrumentation where predictable latency is more important than raw compute power. Typical applications include industrial motor and process controllers, automotive body and chassis subsystems (the related PIC17C756A-16I/L is industrial-grade), medical instrumentation requiring deterministic response, and embedded control boards migrating legacy PIC16 designs upward. The OTP-only nature makes it best suited to mature, stable firmware. Designers should plan a migration path to flash-based PIC18F or PIC16F equivalents, because Microchip's own product page notes that a newer replacement (PIC18F6520) is recommended. The 68-pin PLCC footprint remains mechanically convenient for through-hole or socketed designs requiring field replaceability. This page synthesizes distributor pricing, same-brand and cross-brand drop-in alternatives, and design notes compiled from the Microchip datasheet and distributor references that a bare datasheet view alone does not provide.

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PIC17C756A-16/PT - 8-bit OTP MCU, 32KB, 50 I/O, TQFP-64 | Microchip
PIC17C756A-16/PT

PIC17C756A-16/PT - 8-bit OTP MCU, 32KB, 50 I/O, TQFP-64 | Microchip

The Microchip Technology PIC17C756A-16/PT is a high-performance 8-bit CMOS EPROM microcontroller in a 64-pin TQFP (10x10 mm) package, executing one instruction per 121 ns cycle at 16 MHz clock input. It integrates 32 KB of one-time-programmable (OTP) program memory, 902 bytes of RAM, and 50 digital I/O pins, with on-chip 10-bit analog-to-digital conversion. An 8-bit microcontroller (MCU) is a small programmable computer-on-a-chip that processes 8-bit data words and is widely used as the embedded brain of industrial, automotive, and consumer products. The PIC17C756A belongs to the PIC17Cxxx family of low-cost, high-performance, fully static, CMOS 8-bit MCUs employing Microchip's enhanced RISC architecture. Within the wider taxonomy it sits as: 8-bit MCU -> RISC microcontroller -> microcontroller -> embedded processor -> semiconductor. Despite its 8-bit data path, a 16 MHz input clock yields 8.25 MIPS of throughput, rivalling many contemporary 16-bit controllers in deterministic interrupt response. Key differentiating features are: 58 single-word instructions (RISC), single-cycle execution except for program branches and table reads/writes (two cycles), 16-level deep hardware stack, multiple internal and external interrupts, 8x8 single-cycle hardware multiplier, and a 33 MHz maximum clock input. The 10-bit A/D converter and 50 I/O pins make the device suitable for measurement and control nodes that must digitise multiple analog sensors while exposing many digital loads. Architecturally, the PIC17C756A uses Harvard bus separation between program (EPROM) and data (RAM), giving deterministic instruction fetch. Because the program memory is OTP (not Flash), it is intended for volume production where in-system reprogrammability is not required; Microchip recommends the pin-compatible PIC18F6520 (Flash) for new designs. Typical applications include industrial process control nodes, motor-control peripherals, instrumentation front-ends with on-chip ADC, automotive body controllers (legacy designs), and consumer appliances requiring many I/O. The wide I/O count also suits keypad-scanning, display multiplexing, and parallel sensor arrays. When designing, note that OTP memory cannot be erased; prototypes should use the JW (windowed) or QTP versions. Decoupling must include bulk + high-frequency ceramics placed within 5 mm of the supply pins to suppress the noise generated during table-write cycles. The part is migrating to the recommended PIC18F6520 - plan long-term sourcing accordingly.

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PIC17C756A-16E/L - 8-Bit 16MHz OTP MCU 32KB | 68-PLCC | Microchip
PIC17C756A-16E/L

PIC17C756A-16E/L - 8-Bit 16MHz OTP MCU 32KB | 68-PLCC | Microchip

The Microchip Technology PIC17C756A-16E/L is an 8-bit RISC microcontroller built on the PIC17C architecture, delivering up to 8.25 MIPS (121 ns instruction execution) from a 16 MHz oscillator, with 32KB (16K x 16) of one-time-programmable (OTP) program memory and 902 bytes of RAM, packaged in a 68-pin PLCC (24.23x24.23 mm). It offers 50 digital I/O pins, an extended industrial temperature grade (-40C to +125C), and operates from a single 4.5V to 5.5V supply. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + RAM), and peripherals (I/O, timers, ADC, communication ports) onto one silicon die. Within the broader semiconductor taxonomy, an MCU belongs to the class of embedded processors -> microcontrollers -> 8-bit microcontrollers. The PIC17C family sits at the high end of Microchip's 8-bit lineup, distinguished by a wider 16-bit instruction word and Harvard architecture that separates program and data buses for simultaneous fetch and execute. Key features of the PIC17C756A include a 16-level hardware stack, eight 16-bit timer/counters, a 12-bit 8-channel ADC, two USART ports, and an instruction set of only 58 single-word instructions (121 ns single-cycle), with program branches and table reads/writes being two-cycle (242 ns). The "-16E" suffix indicates 16 MHz maximum clock with extended temperature grade, and the "/L" suffix denotes the 68-pin PLCC package. The PIC17C756A uses a CMOS process with a 16-bit instruction bus and 8-bit data bus, enabling 16K x 16 OTP program memory while keeping RAM access on a separate 8-bit bus for throughput. The 16 MHz oscillator drives a four-phase internal clock that completes most instructions in one cycle, achieving the 8.25 MIPS throughput at maximum frequency. Multiple interrupt sources (up to 17 vectors) support real-time control applications. Typical applications include industrial automation controllers, automotive body and chassis electronics (extended temp grade), building automation HVAC systems, motor control front-ends, and white-goods appliance controllers. Its 50 I/O pins and 12-bit ADC make it well suited to multi-channel sensor aggregation and human-machine interface panels where 8-bit processing and ample I/O are sufficient. When designing with the PIC17C756A, note that OTP memory requires a device programmer for firmware loading - for in-system reprogrammability, Microchip recommends migrating to the flash-based PIC18F6520 successor. The 68-PLCC package uses J-leads for through-hole-style socket mounting that is also compatible with surface-mount sockets.

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PIC17C756A-16E/PT - 8-bit OTP MCU, 32KB, 50 I/O, 64-TQFP | Microchip
PIC17C756A-16E/PT

PIC17C756A-16E/PT - 8-bit OTP MCU, 32KB, 50 I/O, 64-TQFP | Microchip

The Microchip Technology PIC17C756A-16E/PT is a high-performance 8-bit CMOS EPROM (OTP) microcontroller built on Microchip's PIC® 17C architecture, operating at a 16 MHz clock input with a 121 ns single-cycle instruction execution time (excluding program branches and table reads/writes, which are two-cycle). It integrates 32 KB (16K x 16) of One-Time Programmable program memory, 902 bytes of data RAM, and 50 digital I/O pins in a 64-pin TQFP (10x10 mm) surface-mount package, with supply voltage support from 4.5 V to 5.5 V. What is an OTP microcontroller? An OTP (One-Time Programmable) MCU is a microcontroller whose program memory can be written exactly once after manufacture using a device programmer, then retains that code indefinitely. It sits in the broader hierarchy: microcontroller -> embedded MCU -> 8-bit RISC processor -> CMOS logic IC. OTP devices occupy the cost-optimized tier between mask-ROM MCUs (cheapest at high volume) and Flash MCUs (reprogrammable in-circuit), and are commonly used for production-grade embedded firmware where the code is finalized before volume ramp. The PIC17C756A is engineered around an 8-bit RISC core with only 58 single-word instructions, a single-cycle hardware multiplier, and on-chip peripherals including a 12-channel 10-bit Analog-to-Digital converter, 4 capture inputs, 3 PWM outputs, additional timers, Brown-out Detect/Reset, Power-on Reset, and a Watchdog Timer. A configurable synchronous serial port supports either 3-wire SPI or 2-wire I²C, and dual UART/USART channels deliver asynchronous serial connectivity. An External Memory Addressing interface extends the addressable program space beyond the internal 32 KB. Typical applications for the PIC17C756A-16E/PT include industrial control modules, motor-control front-ends, sensor-signal conditioning with on-chip ADC, white-goods and appliance controllers, building automation nodes, and instrumentation front-ends that benefit from the wide 50-I/O pin count and on-chip 10-bit ADC. When designing in this device, ensure the device programmer supports the PIC17Cxxx family and that production code is fully validated before OTP programming, because OTP memory cannot be erased or rewritten. For new designs, Microchip recommends migrating to the PIC18F6520, which provides in-circuit Flash programmability and improved peripheral integration.

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PIC17C756A-16I/L - 8-Bit 16MHz 32KB OTP MCU 68-PLCC | Microchip
PIC17C756A-16I/L

PIC17C756A-16I/L - 8-Bit 16MHz 32KB OTP MCU 68-PLCC | Microchip

The Microchip Technology PIC17C756A-16I/L is a high-performance 8-bit CMOS EPROM microcontroller delivering 16 MHz (121 ns instruction cycle, 8.25 MIPS) throughput with 32 KB of one-time-programmable (OTP) program memory (16K x 16 organization) and 902 bytes of data RAM, housed in a 68-pin PLCC package (24.23 x 24.23 mm, industrial -40C to +85C temperature range). A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory (ROM/Flash/EPROM/OTP), volatile data memory (RAM), and programmable peripheral I/O. The PIC17C family is Microchip's highest-end 8-bit architecture, targeting applications that exceed PIC16-family performance. It belongs to the broader taxonomy: microcontroller -> embedded processor -> integrated circuit -> semiconductor. Originally EPROM-based, the PIC17C line was later superseded by Flash-based PIC18F/PIC18FXX equivalents after Microchip's migration strategy. Key features of the PIC17C756A-16I/L include 50 digital I/O pins, 12 channels of 10-bit Analog-to-Digital (A/D) conversion, four capture inputs, three PWM outputs, an external memory addressing interface, plus a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C, and two Universal Asynchronous Receiver-Transmitter (UART) channels. Only 58 single-word instructions are needed to program the RISC core. Program branches and table read/write operations take two cycles; all other instructions execute in one cycle (121 ns at 16 MHz). The architecture combines a 16-bit-wide instruction word with an 8-bit data path, allowing single-cycle ALU operations on 8-bit data while fetching full 16-bit opcodes in one bus cycle. The 10-bit A/D converter integrates sample-and-hold and offers 12 input channels multiplexed to digital I/O. The peripheral set is designed for closed-loop control: PWM outputs for motor or power conversion, capture inputs for timing measurement, and a 16-bit external memory bus to extend addressable space beyond internal OTP. Typical applications include industrial automation and process control, motor control (BLDC, stepper, and servo drives), HVAC controllers, instrumentation with on-chip A/D, and embedded control boards requiring >40 I/O. The wide 50-I/O count and external memory bus make it suitable for legacy designs that need modern Flash migration - Microchip recommends the PIC18F6520 as the recommended replacement per the device datasheet. When designing with this part, note that OTP memory cannot be re-programmed; engineering builds should use the windowed PIC17C756A-16/L variant for prototype iteration. Also confirm oscillator configuration and PLCC socket selection; the 24.23 x 24.23 mm PLCC body requires a panel-cut socket rated for industrial temperature. This page consolidates distributor pricing, PLCC drop-in alternatives, and design guidance not found in the bare manufacturer datasheet, helping engineers select, source, and migrate the PIC17C756A-16I/L with confidence.

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PIC17C756A-16I/PT - 8-bit OTP MCU, 16MHz, 32KB EPROM | Microchip
PIC17C756A-16I/PT

PIC17C756A-16I/PT - 8-bit OTP MCU, 16MHz, 32KB EPROM | Microchip

The Microchip Technology PIC17C756A-16I/PT is a high-performance 8-bit CMOS EPROM microcontroller belonging to the PIC17C family, operating up to 16 MHz with 32 KB (16K x 16) of one-time programmable (OTP) program memory and 902 bytes of RAM. Housed in a 64-pin TQFP package measuring 10x10 mm, the device exposes 50 digital I/O lines and integrates a 12-channel 10-bit analog-to-digital converter, four capture inputs, three PWM outputs, and a synchronous serial port configurable for SPI or I2C. The -I suffix indicates the industrial operating temperature range of -40 °C to +85 °C, and the device is specified at 4.5 V to 5.5 V supply. The PIC17C family sits above the PIC16C/PIC12C lineages in the Microchip 8-bit hierarchy, targeting applications that demand more peripherals, more memory, and higher throughput than entry-level PIC micros can deliver. An 8-bit OTP microcontroller is a single-chip computer built around an 8-bit data path and instruction set, with non-volatile program memory that is user-programmable exactly once (OTP, as opposed to flash). The PIC17C756A belongs to the broader category of microcontrollers (MCUs), which are integrated circuits containing a CPU core, RAM, ROM/EPROM/Flash, and programmable I/O. Within that hierarchy, this part is a special-purpose industrial-control MCU optimized for embedded control with on-chip ADC and PWM. The PIC17C756A features only 58 single-word instructions, all single-cycle except for program branches and table reads/writes, which are two-cycle. The 121 ns instruction cycle (8.25 MIPS at 33 MHz clock input) is achieved through an 8-bit single-cycle hardware multiplier, accelerating arithmetic-heavy control loops. An external memory interface allows the PIC17C756A to address additional program/data memory beyond its internal 32 KB, providing migration headroom. Two USART modules, a watchdog timer, and brown-out reset support robust field deployment. Architecturally, the PIC17C756A uses a RISC-style Harvard architecture with separate program and data buses, allowing instruction fetch and operand access to occur in the same cycle. EPROM-based program memory (rather than flash) means code is committed at the time of programming; this suits mature, fixed-function designs where the cost of flash process is not justified. Typical applications include industrial automation controllers, motor control front-ends, sensor signal conditioning, HVAC control boards, and embedded instrumentation requiring 10-bit ADC resolution and multiple PWM channels. The 64-pin TQFP provides ample I/O for keypad scanning, LCD driving, and parallel bus expansion. When designing with this part, verify toolchain support: MPLAB IDE with C17 or MPASM compilers is required for OTP programming. Industrial designers should also note that newer replacements such as the PIC18F6520 (flash-based) are recommended by Microchip for new designs, while the PIC17C756A remains in service for legacy and long-lifecycle programs. This page synthesizes distributor inventory, OTP-versus-flash migration notes, and pin-compatible PIC17C family alternatives not found on a single distributor listing.

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PIC17C756A-33/L - 33MHz 8-Bit OTP MCU, 32KB, 50 I/O | Microchip
PIC17C756A-33/L

PIC17C756A-33/L - 33MHz 8-Bit OTP MCU, 32KB, 50 I/O | Microchip

The Microchip Technology PIC17C756A-33/L is an 8-bit high-performance RISC microcontroller built on the PIC17C architecture, delivering up to 33 MHz clock speed and 32 KB (16K x 16) of one-time-programmable (OTP) program memory in a 68-pin PLCC (24.23x24.23 mm) package. Its 8.25 MIPS throughput at 33 MHz (121 ns instruction cycle) supports single-cycle execution for most instructions, with only program branches and table reads requiring two cycles. The device integrates 902 bytes of on-chip data RAM, 50 digital I/O lines, 12 channels of 10-bit Analog-to-Digital conversion, three PWM outputs, four capture inputs, an external memory interface, and a synchronous serial port configurable as either SPI or I2C. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + RAM), and programmable peripherals onto one silicon die. The PIC17C family sits within the legacy OTP-ROM 8-bit MCU tier of Microchip's product tree: MCU -> 8-bit microcontroller -> PIC -> PIC17C -> high-performance segment. Unlike flash-based PIC18F successors, PIC17C devices use EPROM/OTP program memory, which makes them suited for mature, low-cost, moderate-volume embedded products where firmware is finalized at production. Key features include 58 single-word instructions for compact code, an 8 x 8 single-cycle hardware multiplier, brown-out reset, a watchdog timer, and an extended instruction set. Supply voltage is 4.5 V to 5.5 V (5 V nominal), and the OTP program memory allows one-time factory or prototyping programming. The 68-pin PLCC J-leaded package offers socket-upgradeable serviceability for industrial and legacy systems. Typical applications include industrial control panels, motor control nodes, instrumentation front-ends, and embedded control boards that were originally designed around the PIC17C platform. When designing in this part, note that PIC17C756A is a mature OTP device; new designs should evaluate PIC18F6520 or PIC18F8720 as flash-based drop-in or near-drop-in successors per Microchip migration guidance.

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PIC17C756A-33/PT - 8-bit 33MHz 32KB OTP MCU 64-TQFP | Microchip
PIC17C756A-33/PT

PIC17C756A-33/PT - 8-bit 33MHz 32KB OTP MCU 64-TQFP | Microchip

The Microchip Technology PIC17C756A-33/PT is a high-performance 8-bit CMOS EPROM/OTP-based microcontroller running at 33 MHz with a 121 ns instruction cycle and 8.25 MIPS throughput, housed in a 64-pin TQFP (10x10 mm) package. It integrates 32 KB (16K x 16) of OTP program memory, 902 bytes of data RAM, and 50 digital I/O pins, and is built around the legacy PIC17Cxxx RISC architecture with only 58 single-word instructions to learn. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/OTP), working RAM, peripherals (timers, ADC, communication ports, PWM), and I/O into one package. PIC17C756A-33/PT belongs to the high-end PIC17C family and the broader 8-bit PIC microcontroller hierarchy; while superseded by the Flash-based PIC18F family, it remains in use in long-lifecycle industrial, instrumentation, and legacy designs where OTP memory and a known instruction set are acceptable. Within the power management and signal-chain tree, PIC17C756A-33/PT serves as the digital control plane that supervises analog and power subsystems rather than as a power device itself. Key differentiating features include a 12-channel 10-bit Analog-to-Digital Converter (A/D), 4 capture inputs, 3 PWM outputs, an 8x hardware single-cycle multiplier, and a synchronous serial port configurable as 3-wire SPI or 2-wire I2C plus 2 UART channels. External Memory Addressing extends the program/data space beyond the on-chip 32 KB. These peripherals target embedded control tasks that combine analog sensing, motor or actuator drive, and serial communication in one device. Architecturally, the PIC17C756A-33/PT uses a Harvard RISC core with separate program and data buses, an 8-bit ALU, and dedicated hardware for the 8x8 multiplier so that MULWF executes in a single 121 ns cycle. Operating supply voltage is 4.5 V to 5.5 V and the instruction set is fully orthogonal across all 58 single-word opcodes, simplifying code generation for legacy codebases that target the PIC17C family. Compared with the newer Flash-based PIC18F6520 recommended by Microchip as a successor, the PIC17C756A is OTP (one-time programmable) and is therefore unsuitable for field firmware updates. Typical applications include industrial process control, motor drive and PWM control loops, instrumentation with on-board A/D conversion, and embedded control boards with multiple serial buses. Because OTP memory is permanently programmed at production time, the part is best suited to high-volume or fully characterized designs rather than prototype or field-serviceable products. When designing with the PIC17C756A-33/PT, ensure that the system clock source is stable, the MCLR reset network is properly decoupled, and that the analog AVdd/AVss rails are filtered with the values specified in the datasheet. Confirm in-system programming availability by selecting the correct memory type - OTP parts cannot be reprogrammed and the design must be fully validated before committing to production. This page combines verified distributor pricing and parametric data with drop-in cross references and practical design guidance not available from a single distributor listing.

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PIC17C756A-33E/L - 8-bit 33MHz OTP MCU, 32KB, 50 I/O | Microchip
PIC17C756A-33E/L

PIC17C756A-33E/L - 8-bit 33MHz OTP MCU, 32KB, 50 I/O | Microchip

The Microchip Technology PIC17C756A-33E/L is an 8-bit, 8.25-MIPS CMOS OTP-based microcontroller built on Microchip's PIC® RISC architecture and packaged in a 68-pin PLCC (24.23 x 24.23 mm). According to the Microchip product page for PIC17C756A, the device executes one instruction in 121 ns, supports up to 32 KB (16K x 16) of OTP program memory, and includes 902 bytes of RAM with 50 digital I/O pins. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, RAM, peripheral I/O, and timers onto one silicon die, intended for embedded control tasks where a small, deterministic core beats the overhead of a higher-performance processor. Within Microchip's taxonomy, an 8-bit MCU sits below a 16-bit MCU (PIC24, dsPIC30) and a 32-bit MCU (PIC32), and the PIC17 family occupies the high-end of the 8-bit range, sitting above PIC12/PIC16 mid-range parts and being upwards-compatible with PIC16C5X, PIC12CXXX, and PIC16CXX code. Key features of the PIC17C756A include 8.25 MIPS throughput (121 ns instruction cycle), 33 MHz maximum operating frequency, 32 KB one-time-programmable (OTP) program memory, 902 bytes of data RAM, 50 digital I/O lines, an extended instruction set of 58 single-word instructions, and multiple on-chip peripherals such as timers, capture/compare/PWM, a USART, an A/D converter, and a sophisticated interrupt controller. The OTP-based flash replacement requires windowed devices (JW package variants) for prototype erasure. Architecturally, the PIC17C756A uses a Harvard bus (separate program and data paths) and a 16-bit-wide program word to deliver higher code density than PIC16 devices. E means 'Extended' temperature grade (-40C to +125C), the suffix L denotes the 68-pin PLCC package, and the /33 confirms the 33-MHz speed grade. Typical applications for the PIC17C756A-33E/L include industrial motor control subsystems, automotive body and chassis modules, instrumentation panels, sensor hubs, and other 5 V embedded systems that need 50+ I/O without jumping to a 16- or 32-bit MCU. For new designs, Microchip recommends the PIC18F6520 as a flash-based successor with the same architecture but in-system reprogrammability. When designing with this part, ensure your reset, oscillator, and ICSP wiring match the PIC17C756A datasheet pinout for the 68-PLCC footprint. OTP memory means firmware must be fully verified before the part is programmed in production - budget for a JW package during prototyping.

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PIC17C756A-33E/PT - 8-Bit 33MHz OTP MCU, 32KB, 64-TQFP | Microchip
PIC17C756A-33E/PT

PIC17C756A-33E/PT - 8-Bit 33MHz OTP MCU, 32KB, 64-TQFP | Microchip

The Microchip Technology PIC17C756A-33E/PT is an 8-bit CMOS OTP (One-Time Programmable) microcontroller from the PIC17C family, running at up to 33 MHz (approximately 8.25 MIPS) with 32KB of program memory organized as 16K x 16, 902 bytes of RAM, and 50 digital I/O pins. It is housed in a 64-pin TQFP (10x10 mm) surface-mount package and operates from a single 4.5V to 5.5V supply. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data RAM, and peripheral interfaces. The PIC17C family sits between Microchip's PIC16C mid-range line and PIC18C enhanced line, offering the PIC RISC instruction set extended to 16-bit program words and 58 single-word instructions for higher code density and faster context switching. Key features include four capture inputs, three PWM outputs, an external memory bus, a 12-channel 10-bit Analog-to-Digital converter, and a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C, plus two UART channels. The "E" suffix denotes the extended industrial temperature range of -40C to +125C, making this part suitable for harsh-environment and automotive-adjacent applications. The PIC17C756A uses a Harvard bus architecture with separate program and data paths. The 16-bit-wide OTP program memory delivers 121 ns instruction cycle time at 33 MHz, and the device supports prioritized interrupts, a hardware multiplier, and an 8-level deep hardware stack. Two 8-bit timer/counters plus one 16-bit timer/counter, plus a watchdog timer, give the part rich timing resources for motor control and instrumentation. Typical applications include industrial automation controllers, motor control front-ends, consumer-electronics user-interface boards, sensor signal conditioning, and embedded data-acquisition front-ends. The 12-channel 10-bit ADC suits multi-sensor scanning, while the PWM/capture channels simplify closed-loop control loops. When designing with the PIC17C756A-33E/PT, note that OTP memory cannot be reprogrammed in-circuit - the part is intended for high-volume mature production. For prototype or low-volume work, choose the PIC18F-series or PIC17C flash variants. Because the PIC17C family is mature and being phased out by Microchip in favor of PIC18F, expect NRND/EOL notices when planning long-life programs. This page synthesizes distributor stock and pricing data, same-family PIC17C drop-in alternatives, and practical design notes beyond what the manufacturer datasheet alone provides, helping engineers quickly assess whether the PIC17C756A-33E/PT fits their design.

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PIC17C756A-33I/PT - 33MHz 8-bit OTP MCU, 32KB | Microchip
PIC17C756A-33I/PT

PIC17C756A-33I/PT - 33MHz 8-bit OTP MCU, 32KB | Microchip

The Microchip Technology PIC17C756A-33I/PT is a high-performance 8-bit CMOS EPROM microcontroller with 10-bit A/D, delivered in a 64-pin TQFP (PT) package with 33 MHz maximum clock input and a 121 ns instruction cycle. The 'C' suffix denotes OTP (One-Time-Programmable) program memory; the 'I' suffix denotes the industrial -40C to +85C operating temperature grade; the 'PT' suffix denotes the 10x10 mm TQFP-64 package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data RAM, and programmable peripherals. PIC microcontrollers use a RISC-based Harvard architecture, executing one instruction per cycle (121 ns at 33 MHz). The PIC17 family is Microchip's highest-performance 8-bit line, designed for embedded applications that need more code space, more I/O, and faster execution than the PIC16 family can provide. Key features include 32 KB of OTP program memory (16K x 16), 902 bytes of general-purpose RAM, 50 digital I/O pins, a 10-bit analog-to-digital converter, and a single-cycle hardware multiplier. The 8.25 MIPS throughput and 58-instruction RISC core make the part easy to program while still delivering 8-bit processing power suitable for real-time control. Architecturally, the PIC17C756A combines a wide 16-bit instruction word with an 8-bit data path, dual 16-bit pointer register banks, an 8-level hardware stack, and dedicated peripheral interfaces including USART, SSP, and CCP modules. The Harvard bus keeps program-fetch and data-access fully parallel, eliminating fetch stalls and giving deterministic interrupt latency critical for motor and power-control loops. Typical applications include industrial automation controllers, motor control (BLDC and stepper), HVAC and appliance control, automotive body and chassis subsystems, instrumentation front-ends, and embedded systems that require a 10-bit ADC and abundant digital I/O in a single chip. When designing with this part, verify the OTP memory limitation early in the project lifecycle: code cannot be erased or rewritten, so production programming and verification flows must be locked before committing to volume. For prototypes and field-updateable designs, consider the flash-based PIC18F6520 as a pin-compatible successor. This page synthesizes distributor pricing, cross-reference drop-in alternatives, and engineering guidance not found in the bare manufacturer datasheet, helping you decide quickly whether PIC17C756A-33I/PT fits your application or whether a newer PIC18F alternative better matches your lifecycle needs.

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PIC17C756AT-16/L - 8-bit OTP MCU, 32KB, 50 I/O, 68-PLCC | Microchip
PIC17C756AT-16/L

PIC17C756AT-16/L - 8-bit OTP MCU, 32KB, 50 I/O, 68-PLCC | Microchip

The Microchip Technology PIC17C756AT-16/L is a high-performance 8-bit CMOS EPROM-based microcontroller in the PIC17C family, delivering 8.25 MIPS at a 16 MHz external clock with a 121 ns instruction cycle, packaged in a 68-pin PLCC (Plastic Leaded Chip Carrier) with 50 digital I/O pins. It integrates 32 KB of OTP program memory (16K x 16 words), 902 bytes of RAM, a 10-bit analog-to-digital converter, and a single-cycle 8x8 hardware multiplier, combining Microchip's RISC PIC architecture with peripheral integration targeted at embedded control. A microcontroller (MCU) is a single-chip computer that contains a processor core, program memory, RAM, and peripheral interfaces on one die. The PIC17C family was Microchip's first architecture to exceed the PIC16C5X/16CXX instruction set, extending it with a wider 16-bit instruction word, 58 single-word instructions, and up to 8.25 MIPS throughput. The PIC17C756A represents the high-end of that family, bridging the gap between classic 8-bit PICs and later PIC18F/PIC24 devices and serving as the precursor to the recommended modern replacement PIC18F6520. Key features of the PIC17C756AT-16/L include: 50 I/O pins with high-current sink/source capability, a 10-bit A/D converter with multiple input channels, a hardware 8x8 single-cycle multiplier, dual analog comparators, multiple timer/counters, a USART module, and an OTP (one-time programmable) program memory rated for 1000 erase/write cycles. The 'T' suffix denotes tape-and-reel packaging for the 68-PLCC, and '16' indicates the 16 MHz maximum operating frequency, while the '/L' suffix designates the windowless ceramic-less plastic PLCC carrier. Architecturally, the PIC17C756A uses a Harvard bus with separate program (16-bit wide) and data (8-bit wide) memories, a 17-level deep hardware stack, and the same RISC-style instruction set used across the PIC line, allowing code portability from PIC16C/PIC12C projects. Its 4.5 V to 5.5 V single-supply operation simplifies analog and digital rail design in industrial and consumer applications. Typical applications include industrial control panels, motor drive controllers, instrumentation front-ends, automotive body and chassis ECUs (via PIC17C756A-16I/L industrial variant), HVAC controls, and embedded control where 50 I/O lines and on-chip A/D reduce the need for external logic. Engineers value the OTP variant for low-volume production and field-provisioning where firmware changes are infrequent. When designing with this part, verify that your firmware footprint fits within the 32 KB OTP window and that code branches avoid the two-cycle penalty on program branches and table reads/writes. Because the PIC17C756A is a legacy OTP family, evaluate the recommended replacement PIC18F6520 for new designs; this part is most often sourced today for legacy board repairs and long-lifecycle industrial systems.

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PIC17C756AT-16/PT - 8-bit 16MHz 32KB OTP MCU 50 I/O | Microchip
PIC17C756AT-16/PT

PIC17C756AT-16/PT - 8-bit 16MHz 32KB OTP MCU 50 I/O | Microchip

The Microchip Technology PIC17C756AT-16/PT is an 8-bit CMOS EPROM-based microcontroller from the PIC17CXXX family, delivering 8.25 MIPS performance with a 16 MHz maximum clock input and 121 ns instruction cycle. It integrates 32 KB of OTP program memory (organized as 16K x 16), 902 bytes of RAM, and 50 general-purpose I/O pins in a 64-pin TQFP (10x10 mm) package. The device is targeted at high-performance embedded applications requiring robust peripheral integration, including a 10-bit A/D converter and USART/SPI/I2C connectivity. Background: PIC microcontrollers (Peripheral Interface Controllers) are 8/16/32-bit RISC-based Harvard-architecture microcontrollers originally developed by General Instrument's microelectronics division and later popularized by Microchip Technology. The PIC17CXXX family was Microchip's first 8-bit architecture to exceed 16-bit core performance (with 16-bit instructions and an 8-bit data path), offering an upgrade path from the popular PIC16CXXX family. Within the broader taxonomy, PIC17 sits between the PIC16 (entry-level 8-bit) and PIC18 (high-performance 8-bit) families, and is positioned as the mid-tier for engineers needing more MIPS without migrating to 16-bit dsPIC devices. Key features include a single-cycle hardware multiplier, 58 single-word instructions, hardware USART, MSSP (SPI/I2C), 10-bit A/D converter with multiple channels, and a multi-source interrupt controller. The 'A' suffix marks an enhanced silicon revision that adds peripheral improvements over the original PIC17C756 die, while the 'T' suffix denotes Tape & Reel packaging for high-volume assembly. The device operates from 4.5 V to 5.5 V supply and supports an industrial temperature range, making it suitable for industrial control, instrumentation, and automotive subsystems (when properly qualified). The instruction set is fully upward-compatible with PIC16C5X/PIC12CXXX/PIC16CXXX devices, easing code migration within Microchip's 8-bit portfolio. Typical applications include industrial automation controllers, motor control front-ends, sensor signal conditioning, and embedded control boards requiring USART-driven communication. Its 50 GPIO pins comfortably support keypad scanning, LCD driving, and parallel bus interfacing. When designing with this part, verify OTP memory implications: OTP (One-Time-Programmable) cannot be erased, so code must be fully validated before programming. Use the PIC17C756A-16/PT for windowed (UV-erasable) development prototypes, then migrate to the 'T' suffix for production tape & reel assembly. This page synthesizes distributor pricing, verified drop-in alternatives, and practical design guidance not assembled in the manufacturer datasheet alone.

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PIC17C756AT-16E/L - 8-Bit 16MHz OTP MCU, 32KB, 68-PLCC | Microchip
PIC17C756AT-16E/L

PIC17C756AT-16E/L - 8-Bit 16MHz OTP MCU, 32KB, 68-PLCC | Microchip

The Microchip Technology PIC17C756AT-16E/L is an 8-bit CMOS OTP microcontroller from the PIC17C family, operating at 16 MHz with 32 KB (16K x 16) of one-time-programmable program memory and 902 bytes of RAM, housed in a 68-pin PLCC package with J-leads. The 'T' suffix indicates tape-and-reel packaging, the '16' designates the 16 MHz maximum clock, the 'E' indicates the extended industrial temperature grade (-40C to +125C), and the 'L' identifies the 68-pin PLCC (Leaded Plastic Chip Carrier, J-lead) package. A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory, working RAM, and programmable I/O peripherals in a single chip. The PIC17C family is Microchip's highest-performance 8-bit architecture before the introduction of the PIC18 family, executing 8.25 MIPS at 16 MHz with only 58 single-word instructions and a deterministic 4-cycle pipeline. PIC MCUs sit within the broader hierarchy: microcontroller -> embedded processor -> semiconductor, and remain widely deployed in legacy industrial control, instrumentation, and automotive subsystems that depend on OTP-only code storage. Key features of this part include a 16-bit data bus architecture, 50 programmable digital I/O lines, an integrated 10-bit analog-to-digital converter, USART, SSP, and capture/compare/PWM peripherals, and a supply voltage range of 4.5 V to 5.5 V. The 68-PLCC socket-mount package supports easy prototyping and field replacement in legacy designs. The extended temperature grade ('E') makes the part suitable for outdoor, automotive, and industrial environments. OTP program memory enables low per-unit cost for mature, fully validated firmware where no field updates are required. Typical application domains include industrial process control, building automation controllers, motor drive front-ends, instrumentation front-panels, and white-goods control boards. Modern Microchip guidance recommends migrating to the PIC18F6520 (Flash-based) for new designs, but the PIC17C756AT-16E/L remains supported through the Microchip Legacy MCU program for existing production. When designing with this device, ensure decoupling capacitors (typically 100 nF plus 10 uF bulk) are placed within 5 mm of VDD/VSS pins, and follow the 5V rail tolerance carefully because the part does not include an internal brown-out reset on all speed grades. Code development uses the MPLAB XC8 compiler and a 5V-tolerant ICSP programmer such as the PICkit 3.

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PIC17C756AT-16E/PT - 8-Bit 16MHz 32KB OTP MCU 64-TQFP | Microchip
PIC17C756AT-16E/PT

PIC17C756AT-16E/PT - 8-Bit 16MHz 32KB OTP MCU 64-TQFP | Microchip

The Microchip PIC17C756AT-16E/PT is an 8-bit RISC OTP-based microcontroller belonging to the PIC17C family, delivering 8.25 MIPS (121 ns instruction cycle) at a 16 MHz external clock and integrating 32KB (16K x 16) of One-Time-Programmable program memory in a 64-pin TQFP (10x10 mm) surface-mount package. The device targets applications requiring higher performance than the PIC16 family while remaining code-compatible with PIC16C5X/PIC12CXXX/PIC16CXX predecessors. What is a PIC17C microcontroller? The PIC17C series is Microchip's high-performance 8-bit MCU family, sitting between the legacy PIC16 mid-range family and the later PIC18 enhanced family in the company's 8-bit hierarchy. PIC17C parts use a RISC instruction set of only 58 single-word instructions, all single-cycle except program branches and table reads/writes which take two cycles. This positions the PIC17C as a bridge product offering extended memory, more peripherals, and a wider address space than PIC16, before the PIC18 family superseded it. Key features include 902 bytes of general-purpose RAM, 50 digital I/O pins, two 8-bit and one 16-bit timers, a 12-channel 10-bit Analog-to-Digital Converter, dual analog comparators, two USART ports, one MSSP (SPI/I2C) port, a 16-bit capture input, PWM and PSP modules, and a wide 4.5V to 5.5V single supply. The 'E' suffix designates the Extended industrial temperature grade of -40C to +125C. Architecturally, the device employs a Harvard-style bus with separate program (16-bit wide OTP) and data memories, a 16-level hardware stack, and Microchip's standard mid-range core enhanced with multiply instructions and a wider 16-bit data path. The integrated ADC supports both single-ended and differential conversions, useful for sensor signal acquisition. Typical applications include industrial automation controllers, automotive body and instrument-cluster modules, consumer appliance control boards, and embedded control subsystems requiring more GPIO and memory than PIC16 devices can offer while retaining the mature PIC16/17 toolchain and instruction set. When designing with this part, note that the 'T' suffix denotes Tape & Reel packaging, the 'E' suffix marks the extended -40C to +125C temperature grade, and Microchip recommends considering PIC18F6520 as the modern recommended replacement for new designs since PIC17C is a mature family. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the PIC17C756AT-16E/PT that complement the manufacturer datasheet and accelerate engineer decision-making.

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PIC17C756AT-16I/L - 8-Bit 16MHz OTP MCU 32KB Flash 50 I/O | Microchip
PIC17C756AT-16I/L

PIC17C756AT-16I/L - 8-Bit 16MHz OTP MCU 32KB Flash 50 I/O | Microchip

The Microchip Technology PIC17C756AT-16I/L is an 8-bit CMOS EPROM-based microcontroller from the PIC17C family, operating at a 16MHz clock input with a 121ns single-cycle instruction time, delivering up to 8.25 MIPS performance, packaged in a 68-pin PLCC (Plastic Leaded Chip Carrier, 24.23x24.23mm). A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (RAM and program memory), and peripherals such as timers, ADCs, and communication interfaces. The PIC17C family sits at the upper end of Microchip's 8-bit OTP (One-Time Programmable) portfolio, above the PIC16C and below the PIC18 series. Program memory on the PIC17C756A is 16-bit wide, giving 32KB (16K x 16) of OTP storage, paired with 902 bytes of RAM, an 8-level hardware stack, and 50 user I/O lines. These hypernyms place the device in the hierarchy: microcontroller -> 8-bit MCU -> PIC17C family -> CMOS EPROM-based MCU. Key features include an 8-channel 10-bit ADC, two USART modules, one I2C (MSSP) and one SPI peripheral, a single-cycle hardware 8x8 multiplier, and the RISC-style 58-instruction set. The instruction cycle is 121ns at 16MHz (200ns at 8MHz), and DC to 33MHz clock input is supported per family specifications. The architecture uses a Harvard bus with separate program and data paths. The 16-bit wide program memory enables denser code per address than 14-bit PIC16 cores. An interrupt controller handles up to 17 sources with prioritized vectoring. Power management includes selectable oscillator modes (XT, HS, RC) and a power-on reset / brown-out reset block. The CMOS EPROM process delivers low operating current, and the device supports in-circuit serial programming (ICSP) for production line code loading. Typical applications include industrial control and instrumentation, motor control front-ends, automotive subsystems (dashboards, sensors), white goods and HVAC controls, and embedded communication bridges. The 50 I/O and rich peripheral mix make it well-suited for human-machine interface boards with displays and keypads. When designing, ensure the OTP window (the "/L" ceramic-windowed ceramic package option) is considered for prototype iteration: code revisions require UV erase. For volume production, use the OTP-only /L or /Q versions. Decoupling caps on VDD/AVDD/VSS should be placed within 5mm of each pin to keep ADC noise within 1 LSB. This page consolidates distributor pricing for the PIC17C756AT-16I/L, pin-compatible drop-in alternatives within the PIC17C family, and practical design notes that complement - and in places extend - what the manufacturer datasheet covers.

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PIC17C756AT-16I/PT - 8-bit OTP MCU, 32KB EPROM, 64-TQFP | Microchip
PIC17C756AT-16I/PT

PIC17C756AT-16I/PT - 8-bit OTP MCU, 32KB EPROM, 64-TQFP | Microchip

The Microchip PIC17C756AT-16I/PT is a high-performance 8-bit CMOS EPROM microcontroller with 10-bit A/D conversion, 32KB (16K x 16) of One-Time-Programmable (OTP) program memory, 902 bytes of RAM, and 50 digital I/O lines, housed in a 64-pin TQFP surface-mount package. It executes instructions at 16 MHz with a 121 ns single-cycle instruction time and integrates peripherals including Brown-out Detect/Reset, Power-On Reset, PWM modules, a Watchdog Timer, and a hardware single-cycle 8-bit multiplier. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data RAM, and integrated peripherals designed for embedded control. The PIC17C family sits at the upper end of Microchip's 8-bit portfolio, targeting applications that demand higher throughput than the PIC16 family. Within the broader taxonomy, this part is an 8-bit MCU -> microcontroller -> embedded processor -> semiconductor, and uses Harvard architecture with separate program and data buses for deterministic instruction fetch. Key features include a 16 MHz maximum clock input (33 MHz on later revisions), 58 single-word instructions for compact code, an 8 x 8 hardware multiplier executing in one instruction cycle, dual-capture/compare/PWM modules, two USART ports, an I2C/SPI peripheral, and a 12-channel 10-bit analog-to-digital converter. The Brown-out Reset and Watchdog Timer enhance reliability in industrial and automotive-grade embedded systems where supply transients and code lockups must be guarded against. The PIC17C756AT-16I/PT uses Microchip's PIC17C RISC architecture with a 16-bit instruction word despite the 8-bit data path, balancing code density with arithmetic performance. The 'T' suffix denotes Tape & Reel packaging, the '-16' rating indicates the 16 MHz maximum clock, and the 'I' temperature grade supports -40C to +85C industrial environments. The 'PT' suffix indicates the 64-pin TQFP (10x10 mm) package. Typical applications include industrial control panels, motor drive front-end controllers, instrumentation front-ends using the on-chip 10-bit ADC, white-goods and HVAC control boards, and embedded communication bridges where the dual USART and I2C/SPI peripherals reduce external component count. Designers transitioning from PIC16 to higher-performance 8-bit applications also use this device as a stepping stone before migrating to PIC18 or dsPIC architectures. When designing with this part, note that the OTP memory cannot be re-programmed in-circuit; for development, use the windowed PIC17C756A UV-erasable variant or migrate to the flash-based PIC18F6520 recommended by Microchip as the modern replacement. Always keep VDD between 4.5V and 5.5V and respect the 16 MHz clock input limit to avoid timing violations. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single distributor or manufacturer page.

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