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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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PIC17C756AT-33/PT - 8-bit 33MHz OTP MCU, 32KB | Microchip
PIC17C756AT-33/PT

PIC17C756AT-33/PT - 8-bit 33MHz OTP MCU, 32KB | Microchip

The Microchip PIC17C756AT-33/PT is a high-performance 8-bit CMOS EPROM/OTP microcontroller running at 33 MHz clock input with a 121 ns instruction cycle, packaged in a 64-pin TQFP (10x10 mm). It integrates 32 KB (16K x 16) of OTP program memory and 902 bytes of RAM in the PIC17C family architecture, delivering approximately 8.25 MIPS throughput with only 58 single-word instructions to learn. Per the Microchip product page, the device ships in tape-and-reel packaging (the "T" suffix) and supports 50 digital I/O pins, a 10-bit A/D converter, PWM, and on-chip peripherals. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, RAM, and peripheral interfaces. The PIC17C series sits above the PIC16C family in Microchip's 8-bit hierarchy, offering higher instruction throughput (8.25 MIPS at 33 MHz), a wider 16-bit program memory data bus, and extended peripherals while maintaining upward compatibility with PIC16C5X, PIC12CXXX, and PIC16CXX code. OTP (One-Time Programmable) EPROM technology is suited for volume production where the firmware is finalized but does not need field re-programmability. Key features include the 33 MHz clock input, single-cycle hardware multiplier, 121 ns instruction execution (excluding branches and table reads/writes which take two cycles), Brown-out Detect/Reset, Power-on Reset, Watchdog Timer, PWM, plus serial interfaces (I2C, SPI, USART) and a 10-bit ADC. According to the verified Microchip product page, the part operates from a single 4.5 V to 5.5 V supply and provides 50 general-purpose I/O pins. The PIC17C756A architecture uses a RISC-style Harvard CPU with a 16-bit program memory bus and 8-bit data path, an 8-level hardware stack, and interrupt logic supporting 12 sources. The wide external memory bus and 10-bit ADC make it suitable for mixed-signal embedded control. Typical applications include industrial motor control, building automation, instrumentation front-ends, and embedded control requiring moderate code density with 32 KB of OTP and 50 I/O lines. It is also used in legacy designs where Microchip recommends migrating to PIC18F6520 for new designs. When designing with this device, ensure the 4.5-5.5 V supply is well-decoupled and that oscillator layout guidelines are followed because the 33 MHz clock leaves little timing margin. Microchip recommends PIC18F6520 as a modern, flash-based successor. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that consolidate information not found in the manufacturer datasheet alone.

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PIC17C756AT-33E/L - 8-Bit 33MHz OTP MCU 32KB | 68-PLCC
PIC17C756AT-33E/L

PIC17C756AT-33E/L - 8-Bit 33MHz OTP MCU 32KB | 68-PLCC

The Microchip PIC17C756AT-33E/L is a high-performance 8-bit RISC microcontroller from the legacy PIC17C family, delivering 8.25 MIPS at 33 MHz with 121 ns single-cycle instruction execution. It integrates 32 KB of One-Time-Programmable (OTP) program memory (organized as 16K x 16) and 902 bytes of RAM, all housed in a 68-pin PLCC (24.23 x 24.23 mm) J-leaded surface-mount package. The 'T' suffix indicates tape-and-reel packaging, '33' denotes 33 MHz maximum clock, and the 'E' temperature grade supports the extended -40 °C to +125 °C automotive/industrial range. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/OTP), data memory (RAM), and programmable I/O peripherals. The 8-bit PIC17C architecture sits at the top of Microchip's original 8-bit hierarchy (PIC16 -> PIC17 -> PIC18), offering expanded peripherals, linear memory addressing, and faster execution than the popular PIC16 family, while predating the flash-based PIC18F successors. Key features include 50 digital I/O pins, an internal 8-bit data bus with 16-bit instruction path, 8 MIPS sustained throughput, an analog comparator module, capture/compare/PWM, USART, and an 8-channel 10-bit ADC. The OTP program memory allows factory or volume one-time programming for production runs, making this part well suited for mature industrial designs. Only 58 single-word instructions need to be learned, simplifying firmware development. Typical applications include industrial automation controllers, automotive body and chassis electronics, consumer appliances with keypad/display interfaces, and embedded control of legacy PIC-based systems. The wide 4.5 V to 5.5 V supply range and 50 I/O channels make it suitable for motor control front-ends, sensor aggregation nodes, and human-machine interface (HMI) boards. Its 33 MHz throughput comfortably handles real-time control loops, UART bridging, and PWM-driven actuators. When designing with this part, ensure the OTP programming step is factored into production logistics and that adequate decoupling (100 nF + 10 µF) is placed close to VDD pins. Designers migrating to a flash-based equivalent should evaluate Microchip's recommended successor (PIC18F6520) since PIC17C parts are not recommended for new designs.

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PIC17C756AT-33E/PT - 8-Bit 33MHz OTP MCU 32KB | Microchip
PIC17C756AT-33E/PT

PIC17C756AT-33E/PT - 8-Bit 33MHz OTP MCU 32KB | Microchip

The Microchip Technology PIC17C756AT-33E/PT is a high-performance 8-bit CMOS microcontroller from the PIC17C family, featuring a 33 MHz core speed and 32 KB (16K x 16) of one-time programmable (OTP) program memory. It is housed in a 64-pin TQFP (10x10 mm) surface-mount package and integrates 902 bytes of RAM with a rich peripheral set including 12 channels of 10-bit Analog-to-Digital converters, UART/USART, SPI, and I2C interfaces. The device executes instructions in a single cycle of 121 ns, delivering up to 8.25 MIPS throughput from its 58-instruction RISC core. An OTP-based microcontroller (One-Time Programmable) is a class of non-volatile memory MCU that is programmed once at production or during firmware development and cannot be electrically erased afterward. OTP MCUs sit in the hierarchy between mask-ROM MCUs (lowest cost, longest lead) and flash-based MCUs (re-programmable, highest flexibility), making them well suited for high-volume, cost-sensitive, code-stable products where firmware revisions are infrequent. The PIC17C family represents Microchip's high-end 8-bit architecture, designed for applications requiring more computational throughput than the PIC16 family while preserving the PIC instruction-set simplicity. Key features of the PIC17C756AT-33E/PT include 50 I/O lines, brown-out detect/reset for power-supply supervision, and a 4.5 V to 5.5 V supply range. The wide external memory interface supports both program and data expansion beyond the internal 32 KB OTP, while the 17-bit instruction word with separate 16-bit data path (x16 architecture) accelerates table reads and arithmetic operations. The 'AT' suffix indicates tape-and-reel packaging, 'E' denotes the extended temperature grade (-40 C to +125 C), and '33' specifies the 33 MHz maximum clock. The PIC17C756AT-33E/PT is now listed as a legacy / not-recommended for new designs product on Microchip's website, with the PIC18F6520 cited as the modern migration path. Existing designs continue to be supported for production, but new projects should evaluate the flash-based PIC18F alternative unless the OTP cost structure is critical. The 64-TQFP footprint is shared with several PIC18F devices, easing future migration. Typical applications include industrial control panels, motor-control front-ends, instrument front panels, automotive body controllers, and embedded data-acquisition systems requiring moderate computational throughput with multiple communication interfaces. Compared with PIC16 family parts, the 17C family offers roughly 2x the instruction throughput and substantially more RAM and I/O. When designing with this device, allocate careful PCB layout for the 64-TQFP ground paddle for thermal dissipation, and reserve an external crystal or oscillator footprint for the 33 MHz clock. Brown-out reset must be configured in firmware to ensure deterministic startup across the full 4.5-5.5 V supply range. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with cross-references to verified Microchip migration paths.

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PIC17C756AT-33I/L - 33MHz 8-Bit OTP MCU, 32KB, 50 I/O | Microchip
PIC17C756AT-33I/L

PIC17C756AT-33I/L - 33MHz 8-Bit OTP MCU, 32KB, 50 I/O | Microchip

The Microchip Technology PIC17C756AT-33I/L is a high-performance 8-bit CMOS OTP EPROM microcontroller in the PIC17C family, delivering up to 8.25 MIPS at a 33 MHz external clock with a 121 ns single-cycle instruction execution time. It integrates 32KB (16K x 16) of one-time-programmable program memory and 902 bytes of RAM, providing the throughput and code density required for embedded control applications that historically demanded external logic or larger 16-bit parts. A microcontroller (MCU) is an integrated circuit that combines a CPU core, non-volatile program memory, working RAM, and a set of on-chip peripherals behind a unified instruction set, allowing a single chip to replace dozens of discrete logic devices. The PIC17C family sits between Microchip's baseline PIC16C5X/PIC16CXX devices and the later PIC18F parts, adding a 16-bit-wide instruction word (which yields 32KB of code space from a single OTP array) while keeping an 8-bit data path and only 58 single-word instructions to learn. This positioning explains why PIC17C756A-series parts are still specified in long-lifecycle industrial designs even after the family was officially replaced by the PIC18F6520. Key features of the PIC17C756AT-33I/L include 50 programmable digital I/O lines, 12 channels of 10-bit Analog-to-Digital conversion, a single-cycle 8-bit hardware multiplier, dual hardware PWM/Capture/Compare modules, an asynchronous serial port (USART), a synchronous serial port (SSP) for SPI/I2C, and a wide 4.5V to 5.5V supply range suited to industrial 5V rails. The /L suffix denotes the 68-pin PLCC (Plastic Leaded Chip Carrier, J-leaded, 24.23 x 24.23 mm) surface-mount package, and the /I industrial temperature grade spans -40C to +85C. Architecturally, the PIC17C756A uses a RISC-style Harvard bus with separate program and data paths, an internal instruction pipeline, and an 8-level deep hardware stack, which together enable deterministic 121 ns instruction cycles except for two-cycle program branches and table reads/writes. The on-chip peripherals are mapped into the SFR space, and the 10-bit ADC includes dedicated sample-and-hold and programmable acquisition timing. Typical applications include industrial automation controllers, motor control front-ends, instrumentation front panels, automotive body electronics (where the part was historically qualified in non-AEC-Q100 designs), HVAC control boards, and legacy embedded products that were designed around the PIC17C family before migrating to PIC18F. The combination of 50 I/O, 12 ADC channels, and a 5V-tolerant architecture makes it a frequent choice for sensor aggregation nodes. When designing with this part, allow at least a 2-layer board with a solid ground pour under the PLCC footprint and place a 0.1 uF decoupling capacitor on every VDD/VSS pair. Because the device is OTP rather than flash, the firmware must be fully validated before programming - in-circuit reprogramming is not possible. This page synthesizes current distributor stock, parametric cross-references, and application guidance for engineers who still need to source or design around the PIC17C756A family.

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PIC17C756AT-33I/PT - 33MHz 8-bit OTP MCU 32KB TQFP-64 | Microchip
PIC17C756AT-33I/PT

PIC17C756AT-33I/PT - 33MHz 8-bit OTP MCU 32KB TQFP-64 | Microchip

The Microchip Technology PIC17C756AT-33I/PT is a high-performance 8-bit CMOS OTP (one-time-programmable) microcontroller from the PIC17C family, housed in a 64-pin TQFP (10x10 mm) package and rated for the industrial -40C to +85C temperature range. The device integrates a 33 MHz core with a 121 ns single-cycle instruction execution, delivering up to 8.25 MIPS throughput, alongside 32 KB (16K x 16) of program memory and 902 bytes of general-purpose RAM. It exposes 50 digital I/O pins and supports multiple serial peripherals including I2C, SPI, and UART/USART, plus a 10-bit A/D converter, PWM, watchdog timer, brown-out detect, and power-on reset. A PIC microcontroller is a Harvard-architecture RISC processor family that separates program and data memory spaces to enable single-cycle instruction fetch and deterministic execution. The PIC17C family sits at the top of Microchip's classic 8-bit portfolio: in the system hierarchy it is classified as a microcontroller (MCU) -> embedded controller -> 8-bit RISC processor -> semiconductor IC. Unlike PIC16C/PIC12C parts, the PIC17C line provides a 16-bit instruction word, hardware multiply, and an extended peripheral set aimed at more demanding embedded designs while remaining source-compatible with smaller PIC parts. Key differentiating specifications include the 33 MHz maximum clock input (giving 121 ns instruction cycle for branches and 121 ns for normal single-cycle instructions), hardware single-cycle multiplier, 10-bit ADC, and 50 I/O - significantly more than legacy PIC16F parts. The part runs from a 4.5 V to 5.5 V single supply and is offered in a plastic TQFP-64 (10x10 mm) footprint for surface-mount production. Typical applications include industrial control front-ends, motor drive signal conditioning, sensor aggregation nodes, and legacy embedded products where the PIC17C toolchain and code base are already deployed. The device is suited to designs that need more RAM and I/O than PIC16F or PIC18F parts can supply, while keeping the established 5 V PIC ecosystem. Designers should note that PIC17C is OTP-only; for in-field reprogrammability the recommended migration path is the Flash-based PIC18F6520. Per Microchip, the PIC17C756A is being replaced by PIC18F6520 in new designs.

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PIC17C762-16/L - 8-Bit 16MHz 16KB OTP MCU 84-PLCC | Microchip
PIC17C762-16/L

PIC17C762-16/L - 8-Bit 16MHz 16KB OTP MCU 84-PLCC | Microchip

The Microchip Technology PIC17C762-16/L is a high-performance 8-bit CMOS EPROM microcontroller in the PIC17C family, integrating 16KB (8K x 16) of One-Time-Programmable (OTP) program memory and running at 16MHz external clock (33 MHz internal / 8.25 MIPS instruction throughput). It is offered in a 84-pin PLCC (Plastic Leaded Chip Carrier) J-lead package with body dimensions of 29.31 x 29.31 mm, designated by the /L package suffix. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (ROM/Flash/OTP), data memory (RAM), and integrated peripherals such as timers, ADC, communication ports, and I/O. The PIC17C family sits at the upper end of Microchip's classic 8-bit PIC architecture hierarchy (PIC10/12/16/17/18), targeting high-throughput embedded control with Harvard-bus throughput and RISC instruction set efficiency. The PIC17C762 specifically extends the family with a wider 16-bit instruction word and 8-bit data path, balancing code density with 8-bit peripheral simplicity. Key features of the PIC17C762-16/L include 16KB of OTP program memory (8K words x 16 bits), a 10-bit analog-to-digital converter, and a 50-pin I/O structure on the 84-PLCC footprint. The device executes most instructions in a single 121 ns cycle (8.25 MIPS at 33 MHz oscillator) and supports only 58 single-word instructions, easing code development. It operates from a 4.5V to 5.5V supply, includes a hardware multiplier, multiple timer/counter modules, and supports both parallel and serial communication peripherals typical of mid-1990s industrial controllers. Architecturally, the PIC17C762 uses an enhanced Harvard architecture with a 16-bit program memory bus and 8-bit data memory bus, allowing single-cycle instruction fetch plus data access. The OTP cell technology permits factory or prototype programming but does not support in-circuit re-programming - this is a key distinction versus modern Flash-based PIC18 successors. The integrated 10-bit ADC, multiple capture/compare/PWM modules, and dual USART ports make it suitable for closed-loop motor control, instrumentation, and process automation where deterministic interrupt latency matters. Typical applications include industrial process control, motor drive control loops, HVAC equipment, security panel controllers, and legacy instrumentation interfaces. The wide I/O count and PLCC footprint suit backplane-style designs and through-hole manufacturing lines that pre-date surface-mount-only conversion. When designing with the PIC17C762-16/L, verify oscillator configuration (HS vs EC mode) against your crystal selection and confirm that your toolchain targets the PIC17C core - the PIC17C instruction set is a superset of the PIC16C but with different SFR mapping. Note that Microchip officially recommends the PIC18F8520 as a newer replacement, so consider migration paths for new designs. This page consolidates distributor pricing, drop-in alternative MPNs, and practical design considerations - information not assembled in any single manufacturer document.

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PIC17C762-16/PT - 8-bit OTP MCU, 16KB EPROM, 66 I/O TQFP-80 | Microchip
PIC17C762-16/PT

PIC17C762-16/PT - 8-bit OTP MCU, 16KB EPROM, 66 I/O TQFP-80 | Microchip

The Microchip Technology PIC17C762-16/PT is a high-performance 8-bit CMOS EPROM-based microcontroller in a 80-pin TQFP (PT) surface-mount package, delivering 8.25 MIPS at a 33 MHz oscillator input (121 ns instruction cycle) and 16 KB of on-chip OTP program memory. It integrates 678 bytes of general-purpose RAM, 66 digital I/O lines, a 10-bit analog-to-digital converter, an 8-bit single-cycle hardware multiplier, and the PIC17C family peripheral set including multiple timers, USART, and capture/compare/PWM modules. An OTP microcontroller (One-Time-Programmable microcontroller) is a non-volatile program-memory MCU whose EPROM cells can be written exactly once during production programming, then retain their bit pattern for the lifetime of the part. OTP sits in the microcontroller taxonomy between mask-ROM MCUs (cheapest, programmed at the fab) and flash MCUs (rewritable for field upgrades); OTP MCUs are favored for high-volume mature products where firmware is stable and production tooling costs favor factory programming. Within Microchip's lineup, PIC17C762 belongs to the PIC17C family of 8-bit RISC microcontrollers, which in turn sits above PIC16C and below PIC18 in performance and peripheral count. Key features of the PIC17C762-16/PT include its high-performance Harvard RISC architecture with only 58 single-word instructions, single-cycle instruction execution (except program branches and table reads/writes which are two-cycle), a wide 4.5 V to 5.5 V supply range, an external clock input up to 33 MHz, and built-in brown-out / power-on reset and watchdog timer. The internal 10-bit A/D converter supports multiple channels for mixed-signal embedded designs. Industrial-grade operation is supported through the -40C to +85C commercial/industrial range (per the PT suffix family). The 80-pin TQFP package exposes 66 I/O pins, leaving 14 pins for power, ground, oscillator, MCLR, and programming functions. Architecturally, the PIC17C762 separates program memory (16 KB OTP EPROM) from data memory (678 bytes RAM + 16-level hardware stack), allowing the 16-bit instruction word to coexist with an 8-bit data path. The single-cycle hardware multiplier accelerates arithmetic operations common in motor control and instrumentation, while the peripheral set supports both event-driven (timer/capture) and communications (USART) workloads. Typical applications include industrial control panels, motor drive controllers, instrumentation front-ends, sensor conditioning with on-chip A/D, low-cost data acquisition terminals, and any high-volume embedded design that benefits from one-time factory programming of stable firmware. Compared with newer flash-based PIC18F8520, the PIC17C762-16/PT targets production runs where firmware stability eliminates the need for field re-programmability. When designing with this part, note that OTP memory cannot be erased or rewritten; firmware bugs are unrecoverable in the field. Ensure a stable, well-regulated 5 V supply and follow Microchip's PIC17C programming specifications for in-circuit or socket programming using the ICSP interface. A newer recommended device per Microchip is the PIC18F8520, which adds flash memory and improved peripherals while remaining software-compatible at the architectural level.

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PIC17C762-16E/L - 16MHz 8-bit OTP MCU, 16KB, 84-PLCC | Microchip
PIC17C762-16E/L

PIC17C762-16E/L - 16MHz 8-bit OTP MCU, 16KB, 84-PLCC | Microchip

The Microchip Technology PIC17C762-16E/L is a high-performance 8-bit CMOS OTP microcontroller in the legacy PIC17C family, delivering 16 MIPS throughput (121 ns instruction execution) at 16 MHz, packaged in an 84-pin PLCC (J-Lead) form factor. According to the Microchip product page, the part integrates 16 KB (8K x 16) of One-Time-Programmable program memory, 678 bytes of general-purpose RAM, and a rich set of peripherals: 16-channel 10-bit ADC, PWM modules, USART/UART, SPI, and I2C, with 50 digital I/O lines. What is an OTP microcontroller? An OTP (One-Time-Programmable) microcontroller is a class of MCU whose internal program memory can be written exactly once after manufacture, typically using a programmer, and cannot subsequently be erased or rewritten. This places OTP MCUs in the broader hierarchy: microcontroller -> embedded processor -> semiconductor IC -> CMOS logic. PIC17C762-16E/L belongs to the legacy PIC17C family, which Microchip itself now flags as obsolete and recommends migrating to the modern PIC18F8520 (per the official Microchip product page notice). Key features include a RISC architecture with only 58 single-word instructions to learn, single-cycle execution on all instructions except program branches and table reads/writes (which take two cycles / 242 ns), wide operating voltage (4.5 V to 5.5 V), industrial/automotive-grade temperature option, plus brown-out detect, power-on reset, and watchdog timer for robust embedded designs. Architecturally, the PIC17C762 uses a 16-bit instruction word with an 8-bit data path and a 16-level deep hardware stack. The Harvard-style memory map separates program (16 KB OTP) from data (678 bytes SRAM + 64 bytes EEPROM-equivalent registers), enabling deterministic single-cycle instruction fetch. Typical applications span industrial control panels, motor drive front-ends (using PWM + ADC for closed-loop sensing), automotive body and chassis ECUs, HVAC controllers, and legacy embedded systems still in production or long-life service. For new designs Microchip explicitly recommends the PIC18F8520 or dsPIC33 families. Design consideration: PIC17C762-16E/L is OTP, so firmware revisions require a new physical part. Plan for a flash-based equivalent (PIC18F8520) during board bring-up to allow code iteration. Operating at 16 MHz requires a stable 4.5 V - 5.5 V rail; add decoupling (100 nF + 10 uF) close to VDD/VSS pins. This page synthesizes distributor stock levels, OTP/Flash migration guidance, and practical design notes not found in the manufacturer datasheet alone, giving engineers and procurement teams a single decision-ready reference.

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PIC17C762-16E/PT - 8-Bit 16MHz 16KB OTP MCU 80-TQFP | Microchip
PIC17C762-16E/PT

PIC17C762-16E/PT - 8-Bit 16MHz 16KB OTP MCU 80-TQFP | Microchip

The Microchip Technology PIC17C762-16E/PT is a high-performance 8-bit CMOS microcontroller from the PIC17C family, offering 16MHz maximum operating frequency, 16KB (8K x 16) of One-Time-Programmable (OTP) program memory and 678 bytes of general-purpose RAM, all housed in an 80-pin TQFP (12x12 mm) surface-mount package. It delivers 8.25 MIPS throughput (121 ns single-cycle instruction execution) across 58 single-word instructions, while program branches and table reads/writes take two cycles. An 8-bit microcontroller (MCU) is a small computer-on-a-chip integrating an 8-bit CPU core, program memory, data RAM, and peripheral subsystems on a single silicon die. It belongs to the broader hierarchy of microcontrollers -> embedded processors -> integrated circuits -> semiconductors, and is the workhorse of industrial control, automotive body electronics, and consumer appliances where deterministic real-time response and cost efficiency matter more than raw compute. Key features of the PIC17C762-16E/PT include 66 digital I/O pins, integrated Brown-out Detect/Reset, Power-On Reset (POR), Pulse-Width Modulation (PWM) outputs, and a Watchdog Timer (WDT). The wide 66-I/O count makes it well-suited to driving multiple sensors, keypads and actuators in a single chip without external expanders. The OTP program memory offers one-time field programmability, suiting mature production runs where code is fixed. Architecturally, the PIC17C762 uses Microchip's enhanced Harvard architecture with separate program and data buses, allowing instruction fetch and operand access in the same cycle. The 16-bit wide program word (8K x 16 = 16KB) gives each instruction more headroom than 14-bit PIC16 cores, while the RISC instruction set simplifies compiler code generation. Supply voltage is 4.5V to 5.5V and the -E suffix denotes the extended industrial temperature grade of -40C to +125C. Typical applications include industrial automation controllers, automotive body and chassis subsystems, HVAC control, uninterruptible power supply (UPS) front panels, and consumer appliances with rich I/O. Microchip's own product page recommends considering the PIC18F8520 as a newer flash-based alternative for new designs, but the PIC17C762 family remains supported for legacy systems. Designers should note that this part is OTP, not flash-based, so firmware must be fully verified before programming. The 80-pin TQFP footprint requires careful PCB layout with adequate thermal relief and four-layer routing for the high pin count. Review Microchip's PIC17C76x Family datasheet for oscillator, A/D and USART configurations before committing to the design. This page synthesises distributor stock levels, drop-in alternatives and practical design notes that go beyond the manufacturer datasheet, giving engineers a single page to evaluate sourcing, replacement and qualification decisions.

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PIC17C762-16I/PT - 16KB EPROM 8-bit MCU, 66 I/O, TQFP-80 | Microchip
PIC17C762-16I/PT

PIC17C762-16I/PT - 16KB EPROM 8-bit MCU, 66 I/O, TQFP-80 | Microchip

The Microchip PIC17C762-16I/PT is a high-performance 8-bit CMOS EPROM/OTP microcontroller delivering 8.25 MIPS (121 ns instruction cycle) with 16 KB of on-chip program memory and 678 bytes of RAM, housed in an 80-pin TQFP (PT) package. It integrates a 10-bit A/D converter, runs from a 4.5 V to 5.5 V supply, and offers 50 to 66 digital I/O lines depending on peripheral multiplex configuration. The 16 MHz maximum oscillator input (PIC17C762 family spec) supports a 121 ns single-cycle instruction execution for all but program branches and table reads/writes, which take two cycles. An 8-bit microcontroller (MCU) is a small, self-contained computing element that integrates a CPU, non-volatile program memory, working RAM, and peripheral blocks on a single die. Within that hierarchy, an OTP/EPROM MCU stores its firmware in one-time-programmable or erasable-programmable read-only memory, making it a fit for low-volume production, prototyping, and field-upgradable legacy designs. The PIC17C family sits at the high end of Microchip's original 8-bit lineup, delivering more MIPS, more pins, and more memory than the baseline PIC16 family while preserving the easy-to-learn 16-bit instruction word RISC architecture. Key features of the PIC17C762-16I/PT include a hardware 8-bit x 8-bit single-cycle multiplier, an integrated 10-bit A/D converter with multiple input channels, multiple timer/counter modules, a USART, and capture/compare/PWM peripherals. The wide operating voltage (4.5 V to 5.5 V) and industrial temperature range (-40C to +85C, indicated by the "I" suffix) make it suitable for factory-floor and commercial embedded equipment. Its 80-pin TQFP footprint exposes nearly every pin as a general-purpose I/O, enabling direct bus-style interfacing to LCDs, keypads, and external memory. Typical applications include industrial control boards, instrumentation front-ends, motor-control subsystems, and legacy embedded products that were designed against the original PIC17C family. Designers migrating a PIC17C762 board to a newer architecture can use the PIC18F8520 as a drop-in software-compatible successor per Microchip's own product page recommendation. The 10-bit A/D and large I/O count also make it relevant for sensor-hub and human-machine-interface designs. When designing with this device, allocate adequate decoupling (typically 0.1 uF ceramic per VDD/VSS pair) and follow Microchip's PIC17C family errata for the OTP programming algorithm. Note that the PIC17C762 has been superseded by the PIC18F8520 for new designs; verify long-term supply before committing to new production.

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PIC17C762-33/L - 8-Bit 33MHz OTP MCU 16KB 84-PLCC | Microchip
PIC17C762-33/L

PIC17C762-33/L - 8-Bit 33MHz OTP MCU 16KB 84-PLCC | Microchip

The Microchip Technology PIC17C762-33/L is an 8-bit high-performance CMOS OTP microcontroller belonging to the PIC17C family, operating at a 33 MHz clock input with a 121 ns instruction cycle (approximately 8.25 MIPS). It integrates 16 KB of OTP program memory (organized as 8K x 16), 678 bytes of data RAM, a 10-bit analog-to-digital converter, and 66 I/O pins, all housed in an 84-pin PLCC (Plastic Leaded Chip Carrier) package measuring 29.31 x 29.31 mm. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data RAM, and a rich set of peripherals (timers, ADC, communication ports, GPIO) onto one silicon die. The PIC17C family was Microchip's first high-end 8-bit architecture, positioned above the PIC16C midrange family by offering wider 16-bit instruction words, an expanded register set, an external memory interface, and higher pin counts for embedded applications requiring more I/O than midrange MCUs could deliver. OTP (One-Time Programmable) variants such as the PIC17C762 are intended for low-to-medium volume production where masked-ROM economics are not justified. The PIC17C762-33/L offers 58 single-word instructions, a single-cycle hardware multiplier (8 x 8 in one instruction cycle), multiple interrupt sources, a USART, an MSSP (Master Synchronous Serial Port), and capture/compare/PWM modules. The 10-bit ADC is suitable for mixed-signal designs, and the 66 I/O lines support extensive parallel interfaces. Operating supply voltage is 4.5 V to 5.5 V, suitable for 5 V industrial and commercial environments. Typical applications include industrial control systems, motor control front-ends, instrumentation, and legacy embedded designs originally migrated from PIC16C/PIC17C development. The wide PLCC-84 footprint and rich peripheral set made the PIC17C762 a frequent choice for printers, automotive body controllers, and process-control boards. When designing with the PIC17C762-33/L, ensure in-circuit programming access (ICP) and consider that OTP memory cannot be erased, so production programming and verification must be rigorous. Use decoupling capacitors near each supply pin, and follow Microchip's PIC17C family reference design for oscillator layout and ADC analog routing. This page synthesizes distributor pricing, current lifecycle status, same-package alternatives (PIC17C752T-33/L, PIC17C756A series), and practical design notes for engineers sourcing the PIC17C762-33/L, supplementing the manufacturer datasheet with selection guidance.

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PIC17C762-33E/L - 8-bit 33MHz MCU, 16KB OTP, 84-PLCC | Microchip
PIC17C762-33E/L

PIC17C762-33E/L - 8-bit 33MHz MCU, 16KB OTP, 84-PLCC | Microchip

The Microchip Technology PIC17C762-33E/L is a high-performance 8-bit CMOS OTP-based microcontroller from the PIC® 17C family, featuring a 33 MHz maximum clock speed with 121 ns single-cycle instruction execution (8.25 MIPS), 16 KB (8K × 16) of One-Time Programmable program memory, and 678 bytes of RAM. Housed in an 84-pin PLCC (Plastic Leaded Chip Carrier, J-Lead) package measuring 29.31 × 29.31 mm, this device also integrates a 16-channel, 10-bit Analog-to-Digital Converter (ADC) and supports up to 50 I/O ports across the operating voltage range of 4.5 V to 5.5 V. The device is specified for the extended industrial temperature range of −40 °C to +125 °C, making it suitable for harsh-environment embedded designs. A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, data memory, and programmable I/O peripherals. The PIC® 17C family sits above the PIC16 family in Microchip's 8-bit hierarchy, offering expanded memory, higher throughput, and integrated analog peripherals aimed at complex embedded-control applications. Within the broader taxonomy, PIC17C762 belongs to: microcontroller → embedded controller → integrated circuit → semiconductor. Its Harvard architecture separates program and data buses, and its 58 single-word instruction set enables compact code generation while retaining deterministic timing. Key features that differentiate this part include its 16-channel 10-bit ADC (sufficient for sensor-array multiplexing), 33 MHz operation yielding 8.25 MIPS throughput, 50 programmable I/O lines, and an OTP program memory that allows factory or prototype programming without requiring in-system re-programmability. The 84-PLCC J-Lead package provides a socket-compatible footprint well suited to industrial control boards and legacy automotive subsystems. Typical applications include industrial automation controllers, automotive body and chassis modules, consumer-electronics motor control, and embedded instrumentation. The device is documented by the manufacturer as a mature OTP part with a recommended successor being the PIC18F8520, indicating that engineers designing new products should evaluate the flash-based PIC18 family. For maintenance of existing designs the PIC17C762-33E/L remains a recognized long-life-cycle component with verified distributor stock as of 2026-09-26. When designing with the PIC17C762-33E/L, ensure the supply rail stays within 4.5 V to 5.5 V and that decoupling capacitors are placed within 5 mm of each power pin. Because OTP memory cannot be rewritten, plan for prototype validation in a windowed (JW) or emulator variant before committing to OTP parts for production. This page synthesizes distributor pricing tiers, drop-in compatible Microchip PIC® 17C alternatives, and practical design notes that complement (but do not duplicate) the manufacturer datasheet. Source references to DigiKey, Mouser, Octopart, and Microchip product pages are provided in the data_sources section.

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PIC17C762-33E/PT - 33MHz 8-bit OTP MCU, 16KB EPROM, 80-TQFP | Microchip
PIC17C762-33E/PT

PIC17C762-33E/PT - 33MHz 8-bit OTP MCU, 16KB EPROM, 80-TQFP | Microchip

The Microchip Technology PIC17C762-33E/PT is a high-performance 8-bit CMOS OTP-based RISC microcontroller belonging to the PIC® 17C family, delivering 8.25 MIPS at a 33 MHz clock with a 121 nanosecond instruction execution time. It integrates 16 KB (8K x 16) of One-Time-Programmable EPROM program memory, executes from a single 58-instruction set, and is housed in an 80-pin TQFP (Thin Quad Flat Pack, gull-wing) surface-mount package. The device operates from a 4.5 V to 5.5 V single supply, with up to 50 digital I/O lines and an internal 10-bit analog-to-digital converter. The 'E' suffix denotes the Extended (Automotive) temperature grade of -40 °C to +125 °C, and the 'PT' suffix identifies the TQFP package and Tray shipping carrier. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data RAM, and configurable peripherals. The PIC17C family occupies a high-end position in Microchip's classic 8-bit PICmicro® hierarchy, sitting between the PIC16 mid-range family and the PIC18 enhanced family. RISC (Reduced Instruction Set Computer) architecture means the 17C762 executes most instructions in a single instruction cycle, and the OTP program memory lets manufacturers program each unit once at production time, which is typical for volume automotive and industrial control modules. Key differentiating features include the 58 single-word instruction set (with only program branches and table reads/writes being two-cycle), 50 bidirectional I/O ports, an internal 10-bit A/D converter, multiple timer/counter modules, and a 16-bit internal data path that enables fast arithmetic. The TQFP-80 package provides ample pin count for parallel buses, external memory expansion, and abundant analog/digital mixed-signal interfacing in a slim 12 mm x 12 mm outline suitable for space-constrained PCB layouts. Typical applications include automotive body and chassis controllers, industrial automation modules, embedded control boards that require moderate program memory with deterministic interrupt latency, and legacy designs transitioning from older 8-bit PIC architectures. Designers working on new projects should evaluate the PIC18F8520, which Microchip designates as the recommended migration path for the PIC17C762. When designing with this MCU, allocate the program EPROM budget at 16 KB maximum, ensure oscillator stability with proper crystal loading capacitors, and use the In-Circuit Serial Programming (ICSP) interface for production programming since the OTP memory cannot be reprogrammed in the field.

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PIC17C762-33I/PT - 8-bit OTP MCU, 33MHz, 16KB EPROM | Microchip
PIC17C762-33I/PT

PIC17C762-33I/PT - 8-bit OTP MCU, 33MHz, 16KB EPROM | Microchip

The Microchip PIC17C762-33I/PT is a high-performance 8-bit CMOS EPROM-based microcontroller with 16KB of on-chip OTP program memory and 678 bytes of RAM, housed in an 80-pin TQFP (12x12 mm) surface-mount package. The device executes instructions in a 121 ns single cycle at 33 MHz, delivering up to 8.25 MIPS throughput, and uses a 16-bit modified Harvard architecture with an 8-bit data path. What is a PIC17C-series microcontroller? The PIC17C family is Microchip's original high-end 8-bit MCU line, built around a 16-bit instruction word and 8-bit data bus. It sits in the hierarchy: microcontroller -> embedded controller -> semiconductor IC. The 'C' suffix denotes EPROM (one-time-programmable) program memory, which was later superseded by Flash-based PIC18F equivalents. PIC17C parts include a hardware multiply engine, multi-source interrupt controller, and 10-bit ADC peripherals, positioning them between classic PIC16 mid-range MCUs and the later 16-bit PIC24/dsPIC families. Key features of the PIC17C762-33I/PT include 50 digital I/O pins arranged across multiple ports, a 10-bit successive-approximation analog-to-digital converter with multiple input channels, two CCP (Capture/Compare/PWM) modules, a USART port, an SSP (Synchronous Serial Port), and a watchdog timer. The supply voltage range is 4.5 V to 5.5 V, and the operating temperature range is -40 C to +85 C (industrial grade, indicated by the 'I' suffix). The architecture combines a single-cycle hardware multiplier, an eight-level hardware stack, and a 16-level deep software stack, enabling efficient C compiler code generation. The PIC17C762 supports both external and internal program memory modes, with the OTP array providing one-time field programmability for production code. The device also integrates a power-on reset, brown-out reset, and low-voltage detection circuit. Typical applications for the PIC17C762-33I/PT include industrial process control, motor control (BLDC and stepper), instrumentation front-ends requiring 10-bit ADC, HVAC controls, and embedded control boards where OTP-based program memory provides cost advantages over Flash parts. The wide digital I/O count (50 pins) supports keypad scanning, LCD driving, and parallel bus peripherals. When designing with the PIC17C762, note that OTP memory cannot be reprogrammed - production programming must be done at the final stage, and any code bug requires a new device. Engineers should also verify the 33 MHz clock input stability, as the 121 ns instruction cycle is the critical timing parameter. This page synthesizes Microchip PIC17C762 datasheet parameters, cross-reference alternatives, industrial-grade operating constraints, and practical OTP-programming design notes - information not consolidated on the manufacturer product page alone.

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PIC17C762T-16/L - 16MHz 8-bit OTP MCU 84-PLCC | Microchip
PIC17C762T-16/L

PIC17C762T-16/L - 16MHz 8-bit OTP MCU 84-PLCC | Microchip

The Microchip Technology PIC17C762T-16/L is an 8-bit CMOS RISC microcontroller featuring 16KB (8K x 16) of OTP program memory, a 16MHz maximum operating frequency, and 50 I/O ports housed in an 84-pin Plastic Leaded Chip Carrier (PLCC) package measuring 29.31 x 29.31 mm with J-lead terminations. A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, and peripheral I/O into one package. The PIC17C762T-16/L belongs to the OTP (One-Time-Programmable) MCU family within the broader PIC17C high-performance series, which itself sits in the hierarchy: PIC17C family -> PIC16/17 architecture -> 8-bit RISC microcontroller -> MCU -> semiconductor device. The PIC17C architecture was engineered for high-throughput embedded control and executes most instructions in a single 121 ns cycle (excluding branches), delivering roughly 8.25 MIPS at 16 MHz. Key specifications include a 58-instruction RISC set, hardware multiply, a 4.5 V to 5.5 V single-supply operating range, 16 KB on-chip OTP program memory, 50 digital I/O lines, and a commercial temperature grade of 0C to +70C. The 84-PLCC surface-mount package exposes a generous pin count for I/O expansion and legacy socket compatibility. Its 16 MHz clock speed makes it suitable for control loops and human-machine interface (HMI) tasks in cost-sensitive designs. Engineered around Microchip's classic Harvard RISC pipeline, the PIC17C762T-16/L uses a separate program and data path to sustain single-cycle throughput. The integrated peripheral set (timers, USART, PWM, ADC) is well matched to motor control and instrumentation; the 33 MHz upper-clocked sibling (PIC17C762-33/L) shares the same pinout and memory map, easing lifecycle migration. Typical applications include industrial automation controllers, consumer-electronics HMI panels, and medical-device front-end boards, where the 84-pin PLCC footprint provides ample I/O for keypads, displays, and sensor interfaces. Designers often use it as a stepping stone before migrating to the pin-compatible flash-based PIC18F8520 suggested by Microchip for new designs. When laying out the PCB, place 0.1 uF decoupling Vdd/Vss pairs as close to the package as possible to suppress the 16 MHz digital noise. Because the device is OTP, firmware must be fully validated before programming; consider the flash-based PIC18F8520 for prototypes that need iteration. This page synthesizes distributor stock data (DigiKey, Heisener, Veswin), parametric comparisons with the 33 MHz variant and the recommended migration part PIC18F8520, and drop-in compatibility notes that are not consolidated in any single manufacturer document.

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