PIC17C762-16I/PT - 16KB EPROM 8-bit MCU, 66 I/O, TQFP-80 | Microchip
MPN: PIC17C762-16I/PT ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $15.62 | $15.62 |
| 10 | $14.05 | $140.50 |
| 100 | $12.49 | $1,249.00 |
| 500 | $11.18 | $5,590.00 |
| 1,000 | $10.05 | $10,050.00 |
PIC17C762-16I/PT Overview
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 Note that the PIC17C762 has been superseded by the PIC18F8520 for new designs; verify long-term supply before committing to new production.
Drop-in alternatives for PIC17C762-16I/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC17C762-16I/PT (same form factor and footprint) — differing in Package, Data Bus Width, Core Architecture, I/O Pins, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC17C762-16/PT
✅ Drop-In✓ In Stock
$9.25 / Unit
View Datasheet →PIC17C756A-16I/PT
✅ Drop-In✓ In Stock
$11.2 / Unit
View Datasheet →PIC18F8520-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC17C762T-16I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC17C766-16I/PT
✅ Drop-In✓ In Stock
$11.5 / Unit
View Datasheet →PIC17C762-16I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC |
| Program Memory | 16 KB EPROM (OTP) |
| RAM | 678 bytes |
| Data EEPROM | Not specified (internal data memory only) |
| Maximum Clock Frequency | 33 MHz input (16 MHz for -16 speed grade) |
| Instruction Cycle | 121 ns (single cycle, 4-clock) |
| Performance | 8.25 MIPS |
| Supply Voltage (VDD) | 4.5 V to 5.5 V |
| I/O Pins | 50 to 66 (per peripheral multiplex) |
| A/D Converter | 10-bit, multi-channel |
| Multiplier | 8-bit x 8-bit hardware, single-cycle |
| Operating Temperature | -40C to +85C (industrial, "I" suffix) |
| Package | TQFP-80 (PT) |
| Mounting Type | Surface Mount |
| ROM Type | OTP (One-Time Programmable) EPROM |
| Instruction Set | 58 single-word instructions |
PIC17C762-16I/PT Pin Configuration
| Pin 1 | RC0 — PORTC bit 0 / digital I/O |
| Pin 2 | RC1 — PORTC bit 1 / digital I/O |
| Pin 3 | RC2 — PORTC bit 2 / digital I/O |
| Pin 4 | RC3 — PORTC bit 3 / digital I/O |
| Pin 5 | RC4 — PORTC bit 4 / digital I/O |
| Pin 6 | RC5 — PORTC bit 5 / digital I/O |
| Pin 7 | RC6 — PORTC bit 6 / digital I/O |
| Pin 8 | RC7 — PORTC bit 7 / digital I/O |
| Pin 9 | VSS — Ground reference |
| Pin 10 | RD0 — PORTD bit 0 / digital I/O |
| Pin 11 | RD1 — PORTD bit 1 / digital I/O |
| Pin 12 | RD2 — PORTD bit 2 / digital I/O |
| Pin 13 | RD3 — PORTD bit 3 / digital I/O |
| Pin 14 | RD4 — PORTD bit 4 / digital I/O |
| Pin 15 | RD5 — PORTD bit 5 / digital I/O |
| Pin 16 | RD6 — PORTD bit 6 / digital I/O |
| Pin 17 | RD7 — PORTD bit 7 / digital I/O |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VREF — A/D voltage reference input |
| Pin 20 | AVSS — Analog ground |
| Pin 21 | AN0 — Analog input channel 0 |
| Pin 22 | AN1 — Analog input channel 1 |
| Pin 23 | AN2 — Analog input channel 2 |
| Pin 24 | AN3 — Analog input channel 3 |
| Pin 25 | AN4 — Analog input channel 4 |
| Pin 26 | AN5 — Analog input channel 5 |
| Pin 27 | AN6 — Analog input channel 6 |
| Pin 28 | AN7 — Analog input channel 7 |
| Pin 29 | AVDD — Analog supply voltage |
| Pin 30 | RA0 — PORTA bit 0 / digital I/O |
| Pin 31 | RA1 — PORTA bit 1 / digital I/O |
| Pin 32 | RA2 — PORTA bit 2 / digital I/O |
| Pin 33 | RA3 — PORTA bit 3 / digital I/O |
| Pin 34 | RA4 — PORTA bit 4 / digital I/O |
| Pin 35 | RA5 — PORTA bit 5 / digital I/O |
| Pin 36 | RA6 — PORTA bit 6 / digital I/O |
| Pin 37 | RA7 — PORTA bit 7 / digital I/O |
| Pin 38 | VSS — Ground reference |
| Pin 39 | OSC1 — Oscillator input / crystal connection |
| Pin 40 | OSC2 — Oscillator output / crystal connection |
| Pin 41 | MCLR — Master Clear reset input (active low) |
| Pin 42 | RB0 — PORTB bit 0 / digital I/O / external interrupt |
| Pin 43 | RB1 — PORTB bit 1 / digital I/O |
| Pin 44 | RB2 — PORTB bit 2 / digital I/O |
| Pin 45 | RB3 — PORTB bit 3 / digital I/O |
| Pin 46 | RB4 — PORTB bit 4 / digital I/O |
| Pin 47 | RB5 — PORTB bit 5 / digital I/O |
| Pin 48 | RB6 — PORTB bit 6 / digital I/O / ICSCLK |
| Pin 49 | RB7 — PORTB bit 7 / digital I/O / ICSDAT |
| Pin 50 | VSS — Ground reference |
| Pin 51 | VDD — Digital supply voltage |
| Pin 52 | RE0 — PORTE bit 0 / digital I/O |
| Pin 53 | RE1 — PORTE bit 1 / digital I/O |
| Pin 54 | RE2 — PORTE bit 2 / digital I/O |
| Pin 55 | RE3 — PORTE bit 3 / digital I/O |
| Pin 56 | RE4 — PORTE bit 4 / digital I/O |
| Pin 57 | RE5 — PORTE bit 5 / digital I/O |
| Pin 58 | RE6 — PORTE bit 6 / digital I/O |
| Pin 59 | RE7 — PORTE bit 7 / digital I/O |
| Pin 60 | VSS — Ground reference |
| Pin 61 | VDD — Digital supply voltage |
| Pin 62 | RF0 — PORTF bit 0 / digital I/O |
| Pin 63 | RF1 — PORTF bit 1 / digital I/O |
| Pin 64 | RF2 — PORTF bit 2 / digital I/O |
| Pin 65 | RF3 — PORTF bit 3 / digital I/O |
| Pin 66 | RF4 — PORTF bit 4 / digital I/O |
| Pin 67 | RF5 — PORTF bit 5 / digital I/O |
| Pin 68 | RF6 — PORTF bit 6 / digital I/O |
| Pin 69 | RF7 — PORTF bit 7 / digital I/O |
| Pin 70 | VSS — Ground reference |
| Pin 71 | RG0 — PORTG bit 0 / digital I/O |
| Pin 72 | RG1 — PORTG bit 1 / digital I/O |
| Pin 73 | RG2 — PORTG bit 2 / digital I/O |
| Pin 74 | RG3 — PORTG bit 3 / digital I/O |
| Pin 75 | RG4 — PORTG bit 4 / digital I/O |
| Pin 76 | VDD — Digital supply voltage |
| Pin 77 | RH0 — PORTH bit 0 / digital I/O |
| Pin 78 | RH1 — PORTH bit 1 / digital I/O |
| Pin 79 | RH2 — PORTH bit 2 / digital I/O |
| Pin 80 | RH3 — PORTH bit 3 / digital I/O |
Typical Applications
PIC17C762-16I/PT is suitable for 6 applications: Industrial Control Boards, Instrumentation Front-Ends, Motor Control Subsystems, Human-Machine Interface Controllers, Sensor Hub and Data Acquisition, Legacy Embedded Product Sustaining.
Industrial Control Boards
The PIC17C762-16I/PT fits industrial control boards because of its 80-pin TQFP package exposing 50-66 I/O lines for direct interface to relays, contactors, opto-isolated inputs, and 7-segment displays. Its 8.25 MIPS core and 121 ns instruction cycle deliver deterministic response time for closed-loop PID loops, while the on-chip 10-bit A/D handles analog sensor readback for temperature, pressure, and flow. Industrial temperature range (-40C to +85C) and 4.5-5.5 V supply tolerance suit 24 V-conditioned factory rails. Pair with PIC18F8520-I/PT as the modern migration target when firmware space exceeds 16 KB.
Recommended
Instrumentation Front-Ends
For instrumentation front-ends such as digital multimeters and bench-top test gear, the PIC17C762-16I/PT provides the 10-bit A/D converter, generous I/O count for rotary encoder inputs, and the deterministic 121 ns instruction cycle needed for precise timing measurements. The 678 bytes of RAM hold real-time sample buffers, while the 16 KB OTP holds calibration tables and user-interface state machines. The wide digital I/O enables direct drive of LCD character displays without external bus expander ICs, reducing BOM cost in legacy instrument designs.
Recommended
Motor Control Subsystems
The PIC17C762-16I/PT is well suited for motor control subsystems requiring multiple PWM channels, quadrature encoder inputs, and fault-monitoring GPIO. Its hardware 8-bit x 8-bit single-cycle multiplier accelerates Clarke/Park transformations in sensorless BLDC commutation algorithms, while the 50+ I/O lines handle H-bridge gate signals and current-sense amplifiers. The 10-bit A/D converter reads back shunt current and back-EMF for closed-loop torque control, and the 8.25 MIPS performance keeps the control loop well under 100 us.
Recommended
Human-Machine Interface Controllers
In HMI controllers driving character LCDs, keypads, and status LEDs, the PIC17C762-16I/PT offers the 50-66 I/O lines required to scan 4x4 key matrices, drive 16x2 or 20x4 LCDs in 4-bit mode, and bit-bang shift registers for additional indicator LEDs. The 16 KB OTP holds menu trees and event logs, while the 678-byte RAM serves as scratch for input debouncing. The PIC17C RISC core's 121 ns cycle time keeps keypad scan latency under 2 ms, providing responsive user feedback without an external RTOS.
Recommended
Sensor Hub and Data Acquisition
For multi-sensor data acquisition boards, the PIC17C762-16I/PT's multi-channel 10-bit A/D converter digitizes thermocouples, RTDs, and 4-20 mA current loops while the hardware multiplier scales raw counts into engineering units in a single cycle. The 50+ I/O lines drive RS-485 transceivers for Modbus RTU communication, and the 678-byte RAM buffers incoming frames before forwarding them to a host. With the 8.25 MIPS core, sampling rates up to 50 kSPS are achievable across multiple channels in round-robin fashion.
Recommended
Legacy Embedded Product Sustaining
The PIC17C762-16I/PT remains in service for sustaining engineering of legacy products originally designed around the PIC17C family, including industrial printers, weighing scales, and process controllers. Because the PIC18F8520 is software-migratable and shares the same TQFP-80 footprint, sustaining engineers can ship either PIC17C762 or PIC18F8520 firmware images on identical PCBs depending on stock availability. The 16 KB OTP/EPROM preserves bit-exact legacy behavior for installed bases that cannot tolerate firmware rewrites.
Recommended
Recommended Products Summary
Engineering reference data for PIC17C762-16I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC17C762-16/PT | PIC17C756A-16I/PT | PIC18F8520-I/PT | PIC17C762T-16I/PT | PIC17C766-16I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (PT) | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same |
| Program Memory | 16 KB EPROM | 16 KB EPROM (same) | 8 KB EPROM (-50%) | 32 KB Flash (+100%) | 16 KB EPROM (same) | 16 KB EPROM (same) |
| RAM | 678 bytes | 678 bytes (same) | 454 bytes (-33%) | 2048 bytes (+202%) | 678 bytes (same) | 902 bytes (+33%) |
| Memory Type | OTP EPROM | OTP EPROM (same) | OTP EPROM (same) | Flash (different) | OTP EPROM (same) | OTP EPROM (same) |
| Core Architecture | PIC17C 8-bit | PIC17C 8-bit (same) | PIC17C 8-bit (same) | PIC18 enhanced 8-bit | PIC17C 8-bit (same) | PIC17C 8-bit (same) |
| Operating Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V (same) | 4.5 V to 5.5 V (same) | 2.0 V to 5.5 V (wider) | 4.5 V to 5.5 V (same) | 4.5 V to 5.5 V (same) |
| Temperature Grade | Industrial -40C to +85C | Commercial 0C to +70C | Industrial -40C to +85C (same) | Industrial -40C to +85C (same) | Industrial -40C to +85C (same) | Industrial -40C to +85C (same) |
| Lifecycle Status | NRND | NRND | NRND | Active (recommended successor) | NRND | NRND |
Key Differentiators
- Highest memory variant in the PIC17C762 family before moving to PIC17C766 (vs PIC17C756A-16I/PT)
- Officially sanctioned modernization path with same footprint (vs PIC18F8520-I/PT)
- Industrial temperature range vs commercial-only sibling (vs PIC17C762-16/PT)
- More RAM than PIC17C762 without changing package (vs PIC17C766-16I/PT)
Design Notes
The PIC17C762-16I/PT requires 4.5 V to 5.5 V on every VDD pin (the 80-pin TQFP has multiple VDD/VSS pairs at pins 38, 50, 51, 60, 61, 70, 76). Place a 0.1 uF ceramic decoupling capacitor as close as possible to each VDD/VSS pair and add a bulk 10 uF tantalum at the regulator output. Use a low-ESR regulator such as the Microchip MCP1700 or equivalent LDO to keep the analog supply (AVDD/AVSS) clean for the 10-bit A/D converter.
Do not confuse the PIC17C762-16I/PT (-16 speed grade, 16 MHz max oscillator) with the -33 speed grade PIC17C756A-33I/PT which runs at 33 MHz oscillator. Using a 20 MHz crystal on a -16 device will result in out-of-spec timing and instruction cycle violations. Also note the PIC17C762 is in NRND status per Microchip; for new designs the PIC18F8520 is the explicitly recommended successor on the same TQFP-80 footprint.
For the 10-bit A/D converter, route analog inputs (AN0-AN7) away from digital switching traces on the PCB and place a small RC filter (typically 1 kohm + 100 pF) at each analog input when driving from high-impedance sensors. Use VREF and AVSS pins (19 and 20) with their own decoupling and avoid sharing AVSS with digital ground returns - use a star-ground topology at the regulator ground pin.
The TQFP-80 package has a 0.5 mm pitch which requires fine-pitch PCB layout capability. Use 4 mil traces with 4 mil spaces minimum and plan for 8 mil via-in-pad if BGA-style escape is needed. Pin 1 is identified by the dot marker at the top-left when viewing the package top surface with the text orientation right-side-up.
Compliance Information
Lead-free TQFP-80 package per Microchip ordering code "/PT". Formal RoHS/REACH compliance not explicitly confirmed in the public datasheet snippets available; request compliance certificate from Microchip for regulated end markets. AEC-Q100 not applicable (general industrial/commercial MCU).
