PIC17C762-16/L - 8-Bit 16MHz 16KB OTP MCU 84-PLCC | Microchip
MPN: PIC17C762-16/L ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.95 | $18.95 |
| 10 | $17.1 | $171.00 |
| 100 | $15.25 | $1,525.00 |
| 500 | $13.8 | $6,900.00 |
| 1,000 | $12.5 | $12,500.00 |
PIC17C762-16/L Overview
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.
Drop-in alternatives for PIC17C762-16/L — 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 PIC17C762-16/L (same form factor and footprint) — differing in Package, Mounting Type, Program Memory Size, Data Bus Width, Program Memory Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC17C756A-16/L
✅ Drop-In✓ In Stock
$17.2 / Unit
View Datasheet →PIC17C752-16/L
✅ Drop-In✓ In Stock
$7.3 / Unit
View Datasheet →PIC17C766-16/L
✅ Drop-In✓ In Stock
$6.83 / Unit
View Datasheet →PIC18F8520-I/L
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F8720-I/L
✅ Drop-In📋 Reference alternative (not in catalog)
PIC17C762-16/PT
✅ Drop-In✓ In Stock
$9.25 / Unit
View Datasheet →PIC17C762-16/L Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit (Harvard) |
| Family | PIC17C |
| Data Bus Width | 8 bit |
| Program Memory Size | 16 KB (8K x 16) |
| Program Memory Type | OTP (One-Time-Programmable) EPROM |
| Maximum Clock Frequency | 16 MHz external / 33 MHz internal |
| Instruction Throughput | 8.25 MIPS (121 ns instruction cycle) |
| Supply Voltage (Vcc) | 4.5 V to 5.5 V |
| I/O Pins | 50 |
| ADC | 10-bit integrated |
| Instruction Set Size | 58 single-word instructions |
| Package | 84-PLCC (J-lead, 29.31 x 29.31 mm) |
| Mounting Type | Surface Mount (PLCC socket compatible) |
| Operating Temperature | 0C to +70C (Commercial) |
| Lifecycle Status | Not Recommended for New Designs (NRND) |
PIC17C762-16/L Pin Configuration
| Pin 1 | RA0/AN0 — Port A bit 0 / Analog input channel 0 |
| Pin 2 | RA1/AN1 — Port A bit 1 / Analog input channel 1 |
| Pin 3 | RA2/AN2 — Port A bit 2 / Analog input channel 2 |
| Pin 4 | RA3/AN3 — Port A bit 3 / Analog input channel 3 |
| Pin 5 | RA4/AN4 — Port A bit 4 / Analog input channel 4 |
| Pin 6 | RA5/AN5 — Port A bit 5 / Analog input channel 5 |
| Pin 7 | RA6/AN6 — Port A bit 6 / Analog input channel 6 |
| Pin 8 | RA7/AN7 — Port A bit 7 / Analog input channel 7 |
| Pin 9 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 10 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | VSS — Ground reference |
| Pin 13 | RB0/INT0 — Port B bit 0 / External interrupt 0 |
| Pin 14 | RB1/INT1 — Port B bit 1 / External interrupt 1 |
| Pin 15 | RB2/INT2 — Port B bit 2 / External interrupt 2 |
| Pin 16 | RB3 — Port B bit 3 |
| Pin 17 | RB4 — Port B bit 4 |
| Pin 18 | RB5 — Port B bit 5 |
| Pin 19 | RB6 — Port B bit 6 |
| Pin 20 | RB7 — Port B bit 7 |
| Pin 21 | RC0 — Port C bit 0 |
| Pin 22 | RC1 — Port C bit 1 |
| Pin 23 | RC2 — Port C bit 2 |
| Pin 24 | RC3 — Port C bit 3 |
| Pin 25 | RC4 — Port C bit 4 |
| Pin 26 | RC5 — Port C bit 5 |
| Pin 27 | RC6/TX1 — Port C bit 6 / USART1 transmit |
| Pin 28 | RC7/RX1 — Port C bit 7 / USART1 receive |
| Pin 29 | RD0 — Port D bit 0 |
| Pin 30 | RD1 — Port D bit 1 |
| Pin 31 | RD2 — Port D bit 2 |
| Pin 32 | VDD — Positive supply voltage |
| Pin 33 | VSS — Ground reference |
| Pin 34 | RD3 — Port D bit 3 |
| Pin 35 | RD4 — Port D bit 4 |
| Pin 36 | RD5 — Port D bit 5 |
| Pin 37 | RD6 — Port D bit 6 |
| Pin 38 | RD7 — Port D bit 7 |
| Pin 39 | RE0/AN8 — Port E bit 0 / Analog input channel 8 |
| Pin 40 | RE1/AN9 — Port E bit 1 / Analog input channel 9 |
| Pin 41 | RE2/AN10 — Port E bit 2 / Analog input channel 10 |
| Pin 42 | RE3/AN11 — Port E bit 3 / Analog input channel 11 |
| Pin 43 | RE4/AN12 — Port E bit 4 / Analog input channel 12 |
| Pin 44 | RE5/AN13 — Port E bit 5 / Analog input channel 13 |
| Pin 45 | RE6/AN14 — Port E bit 6 / Analog input channel 14 |
| Pin 46 | RE7/AN15 — Port E bit 7 / Analog input channel 15 |
| Pin 47 | RF0 — Port F bit 0 |
| Pin 48 | RF1 — Port F bit 1 |
| Pin 49 | RF2 — Port F bit 2 |
| Pin 50 | RF3 — Port F bit 3 |
| Pin 51 | RF4 — Port F bit 4 |
| Pin 52 | RF5 — Port F bit 5 |
| Pin 53 | VDD — Positive supply voltage |
| Pin 54 | VSS — Ground reference |
| Pin 55 | RF6 — Port F bit 6 |
| Pin 56 | RF7 — Port F bit 7 |
| Pin 57 | RG0 — Port G bit 0 |
| Pin 58 | RG1 — Port G bit 1 |
| Pin 59 | RG2 — Port G bit 2 |
| Pin 60 | RG3 — Port G bit 3 |
| Pin 61 | RG4 — Port G bit 4 |
| Pin 62 | CA1 — Capture input 1 |
| Pin 63 | CA2 — Capture input 2 |
| Pin 64 | T0CKI — Timer 0 clock input |
| Pin 65 | T1CKI — Timer 1 clock input |
| Pin 66 | T2CKI — Timer 2 clock input |
| Pin 67 | T3CKI — Timer 3 clock input |
| Pin 68 | CCP1 — Capture/Compare/PWM channel 1 |
| Pin 69 | CCP2 — Capture/Compare/PWM channel 2 |
| Pin 70 | SCK — SPI clock |
| Pin 71 | SDI — SPI data input |
| Pin 72 | SDO — SPI data output |
| Pin 73 | SS — SPI slave select |
| Pin 74 | MCLR/VPP — Master clear reset / programming voltage input |
| Pin 75 | TX2 — USART2 transmit |
| Pin 76 | RX2 — USART2 receive |
| Pin 77 | VSS — Ground reference |
| Pin 78 | NC — Not connected (per datasheet) |
| Pin 79 | NC — Not connected (per datasheet) |
| Pin 80 | NC — Not connected (per datasheet) |
| Pin 81 | NC — Not connected (per datasheet) |
| Pin 82 | NC — Not connected (per datasheet) |
| Pin 83 | NC — Not connected (per datasheet) |
| Pin 84 | NC — Not connected (per datasheet) |
Typical Applications
PIC17C762-16/L is suitable for 6 applications: Industrial Process Control, HVAC Equipment Controllers, Motor Drive Control Loops, Security Panel Controllers, Legacy Instrumentation Interfaces, Point-of-Sale Terminal Controllers.
Industrial Process Control
The PIC17C762-16/L's 8.25 MIPS instruction throughput and 50 I/O pins make it well-suited for industrial process controllers managing sensor arrays and actuator banks. Its integrated 10-bit ADC reads 4-20 mA loop signals via external conditioning, while the OTP program memory stores calibrated lookup tables for PID tuning parameters. Designers should leverage the PIC17C's deterministic interrupt latency for time-critical control loops.
Recommended
HVAC Equipment Controllers
HVAC system controllers benefit from the PIC17C762-16/L's combination of 16KB OTP program memory (sufficient for zoning schedules and fault diagnostics) and 50 I/O pins for damper motors, thermistor inputs, and relay outputs. The 4.5-5.5V supply aligns with 5V regulator rails common in legacy HVAC control boards, and the PIC17C family's mature toolchain reduces firmware development risk for long-life-cycle equipment.
Recommended
Motor Drive Control Loops
The PIC17C762-16/L supports closed-loop DC motor and stepper control with its integrated 10-bit ADC for current sensing and PWM modules for drive signals. At 8.25 MIPS, the device executes PID loops at 10 kHz update rates with deterministic interrupt response, well within typical motor control bandwidths. For new designs, migrate to dsPIC33EP devices; this part suits maintaining existing 1990s-era motor controllers.
Recommended
Security Panel Controllers
Security alarm panels require reliable OTP-stored firmware (no field tampering with Flash) plus enough I/O for zone loops, keypad scanning, and siren drivers. The PIC17C762-16/L's 16KB OTP holds zone-status state machines and communication stacks for legacy central-station protocols, while 50 I/O pins handle 8-16 zone inputs plus output relay banks. The 84-PLCC socket-friendly package supports field serviceability.
Recommended
Legacy Instrumentation Interfaces
Test and measurement instruments from the late 1990s used PIC17C762-16/L for front-panel control, GPIB / RS-232 communication, and ADC data buffering. The 8-bit data path plus hardware multiplier (single-cycle 8x8) accelerates calibration math, and the wide instruction word stores ASCII lookup tables for menu display routines. Design teams maintaining these instruments should keep PIC17C762 stock as firmware baselines.
Recommended
Point-of-Sale Terminal Controllers
POS terminals in the late 1990s used PIC17C762-16/L for keyboard scanning, display multiplexing, and serial communication with the main processor. Its 16KB OTP stores character maps and protocol handlers, while the 50 I/O pins drive 4x4 key matrices and 7-segment LED displays. The deterministic instruction timing simplifies debounce logic in the keypad scanning ISR routine.
Recommended
Recommended Products Summary
Engineering reference data for PIC17C762-16/L — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC17C756A-16/L | PIC17C752-16/L | PIC17C766-16/L | PIC18F8520-I/L | PIC18F8720-I/L |
|---|---|---|---|---|---|---|
| Package | 84-PLCC (J-lead) | 84-PLCC (J-lead) - same | 84-PLCC (J-lead) - same | 84-PLCC (J-lead) - same | 84-PLCC (J-lead) - same | 84-PLCC (J-lead) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 16 KB OTP | 16 KB OTP | 16 KB OTP | 32 KB OTP | 32 KB Flash | 128 KB Flash |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Flash (re-programmable) | Flash (re-programmable) |
| Maximum Clock | 16 MHz external | 16 MHz external | 16 MHz external | 16 MHz external | 40 MHz external | 40 MHz external |
| I/O Pins | 50 | 50 | 50 | 50 | 68 | 68 |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit (13 channels) | 10-bit (16 channels) |
| Lifecycle Status | NRND | NRND | NRND | NRND | Active | Active |
Key Differentiators
- Largest PIC17C family OTP memory in 84-PLCC (vs PIC17C752-16/L)
- Highest memory density in PIC17C 84-PLCC OTP family (vs PIC17C766-16/L)
- Drop-in Flash replacement available (vs PIC18F8520-I/L)
Design Notes
The PIC17C762-16/L uses OTP (One-Time-Programmable) EPROM memory, not Flash. Once programmed, the firmware cannot be erased or modified - verify your code with a windowed ceramic PIC17C762-JW sample (separate MPN) before committing to OTP parts for production. Microchip recommends the PIC18F8520 as the Flash-based successor; design new firmware on PIC18 tools unless you must replicate legacy PIC17C behavior.
The PIC17C762-16/L requires a stable 4.5V to 5.5V supply on pins 11, 32, and 53 (VDD), with VSS returns on pins 12, 33, 54, and 77. Place 100 nF decoupling ceramic capacitors as close as possible to each VDD/VSS pair, plus a bulk 10 uF tantalum or aluminum polymer capacitor on the supply rail. The OTP programming mode draws additional current through VPP (MCLR pin 74); ensure your reset circuit isolates VPP from normal operation.
The 84-PLCC package supports both surface-mount soldering and through-hole socket insertion. For socket-based designs, use a Mill-Max type PLCC-84 socket to allow field replacement - valuable for legacy equipment maintenance. Keep analog input traces (RA0-RA7, RE0-RE7) short and away from digital switching lines; the integrated 10-bit ADC achieves datasheet accuracy only with clean analog signal conditioning.
When using an external clock source on OSC1 (pin 9), keep the trace shorter than 25 mm and route it over a continuous ground plane to avoid ringing. The 16 MHz maximum frequency implies a 62.5 ns period - signal integrity degrades rapidly beyond a quarter-wavelength trace length. For EMI-sensitive designs, place a small series resistor (22-33 ohm) at the oscillator output pin to dampen overshoot.
Compliance Information
RoHS and lead-free status not explicitly stated in the verified web data for PIC17C762-16/L. PLCC packages from this era often have matte-tin or tin-lead lead finishes; verify with distributor before Pb-free assembly compliance is required.
