PIC17C762-16E/L - 16MHz 8-bit OTP MCU, 16KB, 84-PLCC | Microchip
MPN: PIC17C762-16E/L ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.95 | $9.95 |
| 10 | $8.95 | $89.50 |
| 100 | $7.65 | $765.00 |
| 500 | $6.85 | $3,425.00 |
| 1,000 | $6.1 | $6,100.00 |
PIC17C762-16E/L Overview
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.
Drop-in alternatives for PIC17C762-16E/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 PIC17C762-16E/L (same form factor and footprint) — differing in Data Bus Width, Package, Program Memory Type, Program Memory Size, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC17C762-16/L
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$12.5 / Unit
View Datasheet →PIC17C762-16I/L
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC17C756A-16I/PT
✅ Drop-In✓ In Stock
$11.2 / Unit
View Datasheet →PIC17C756A-16E/PT
✅ Drop-In✓ In Stock
$16.8 / Unit
View Datasheet →PIC17C762-16/PT
✅ Drop-In✓ In Stock
$9.25 / Unit
View Datasheet →PIC17C762-16E/L Maximum Ratings & Electrical Characteristics
| Core | PIC 8-bit RISC |
| Instruction Set Width | 16-bit |
| Number of Instructions | 58 single-word |
| Maximum Clock Frequency | 16 MHz |
| Performance | 16 MIPS (121 ns instruction cycle) |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 16 KB (8K x 16) |
| RAM | 678 bytes |
| Data Bus Width | 8-bit |
| Supply Voltage | 4.5 V to 5.5 V |
| I/O Pins | 50 |
| ADC | 16-channel x 10-bit |
| Communication Interfaces | I2C, SPI, UART/USART |
| Peripherals | PWM, Brown-out Detect, POR, WDT |
| Package | 84-PLCC (J-Lead), 29.31 x 29.31 mm |
| Operating Temperature (E suffix) | -40 C to +125 C (extended) |
| Mounting Type | Surface Mount |
PIC17C762-16E/L Pin Configuration
| Pin 1 | RA0/AN0 — PORTA bit 0 / ADC input 0 |
| Pin 2 | RA1/AN1 — PORTA bit 1 / ADC input 1 |
| Pin 3 | RA2/AN2 — PORTA bit 2 / ADC input 2 |
| Pin 4 | RA3/AN3 — PORTA bit 3 / ADC input 3 |
| Pin 5 | RA4/AN4 — PORTA bit 4 / ADC input 4 |
| Pin 6 | RA5/AN5 — PORTA bit 5 / ADC input 5 |
| Pin 7 | RA6/OSC1 — PORTA bit 6 / crystal oscillator input |
| Pin 8 | RA7/OSC2 — PORTA bit 7 / crystal oscillator output |
| Pin 9 | VDD — Positive supply (5V) |
| Pin 10 | VSS — Ground |
| Pin 11 | RB0/INT — PORTB bit 0 / external interrupt |
| Pin 12 | RB1 — PORTB bit 1 |
| Pin 13 | RB2 — PORTB bit 2 |
| Pin 14 | RB3 — PORTB bit 3 |
| Pin 15 | RB4 — PORTB bit 4 |
| Pin 16 | RB5 — PORTB bit 5 |
| Pin 17 | RB6 — PORTB bit 6 |
| Pin 18 | RB7 — PORTB bit 7 |
| Pin 19 | RC0 — PORTC bit 0 |
| Pin 20 | RC1 — PORTC bit 1 |
| Pin 21 | RC2 — PORTC bit 2 |
| Pin 22 | RC3 — PORTC bit 3 |
| Pin 23 | RC4 — PORTC bit 4 |
| Pin 24 | RC5 — PORTC bit 5 |
| Pin 25 | RC6 — PORTC bit 6 |
| Pin 26 | RC7 — PORTC bit 7 |
| Pin 27 | RD0 — PORTD bit 0 |
| Pin 28 | RD1 — PORTD bit 1 |
| Pin 29 | RD2 — PORTD bit 2 |
| Pin 30 | RD3 — PORTD bit 3 |
| Pin 31 | RD4 — PORTD bit 4 |
| Pin 32 | RD5 — PORTD bit 5 |
| Pin 33 | RD6 — PORTD bit 6 |
| Pin 34 | RD7 — PORTD bit 7 |
| Pin 35 | RE0 — PORTE bit 0 |
| Pin 36 | RE1 — PORTE bit 1 |
| Pin 37 | RE2 — PORTE bit 2 |
| Pin 38 | RE3 — PORTE bit 3 |
| Pin 39 | RE4 — PORTE bit 4 |
| Pin 40 | RE5 — PORTE bit 5 |
| Pin 41 | RE6 — PORTE bit 6 |
| Pin 42 | RE7 — PORTE bit 7 |
| Pin 43 | RF0/AN8 — PORTF bit 0 / ADC input 8 |
| Pin 44 | RF1/AN9 — PORTF bit 1 / ADC input 9 |
| Pin 45 | RF2/AN10 — PORTF bit 2 / ADC input 10 |
| Pin 46 | RF3/AN11 — PORTF bit 3 / ADC input 11 |
| Pin 47 | RF4/AN12 — PORTF bit 4 / ADC input 12 |
| Pin 48 | RF5/AN13 — PORTF bit 5 / ADC input 13 |
| Pin 49 | RF6/AN14 — PORTF bit 6 / ADC input 14 |
| Pin 50 | RF7/AN15 — PORTF bit 7 / ADC input 15 |
| Pin 51 | RG0 — PORTG bit 0 |
| Pin 52 | RG1 — PORTG bit 1 |
| Pin 53 | RG2 — PORTG bit 2 |
| Pin 54 | RG3 — PORTG bit 3 |
| Pin 55 | RG4 — PORTG bit 4 |
| Pin 56 | MCLR/VPP — Master clear reset / programming voltage |
| Pin 57 | VDD — Positive supply (5V) |
| Pin 58 | VSS — Ground |
| Pin 59 | SCK/SCL — SPI clock / I2C clock |
| Pin 60 | SDI/SDA — SPI data in / I2C data |
| Pin 61 | SDO — SPI data out |
| Pin 62 | CS/SS — SPI chip select |
| Pin 63 | TX/CK — USART transmit / clock |
| Pin 64 | RX/DT — USART receive / data |
| Pin 65 | CCP1/PWM1 — Capture/Compare/PWM output 1 |
| Pin 66 | CCP2/PWM2 — Capture/Compare/PWM output 2 |
| Pin 67 | T0CKI — Timer 0 clock input |
| Pin 68 | T1CKI — Timer 1 clock input |
| Pin 69 | AVDD — Analog supply (5V) |
| Pin 70 | AVSS — Analog ground |
| Pin 71 | VREF+ — ADC voltage reference positive |
| Pin 72 | VREF- — ADC voltage reference negative |
| Pin 73 | RH0 — PORTH bit 0 |
| Pin 74 | RH1 — PORTH bit 1 |
| Pin 75 | RH2 — PORTH bit 2 |
| Pin 76 | RH3 — PORTH bit 3 |
| Pin 77 | RI0 — PORTI bit 0 |
| Pin 78 | RI1 — PORTI bit 1 |
| Pin 79 | RI2 — PORTI bit 2 |
| Pin 80 | RI3 — PORTI bit 3 |
| Pin 81 | RJ0 — PORTJ bit 0 |
| Pin 82 | RJ1 — PORTJ bit 1 |
| Pin 83 | VDD — Positive supply (5V) |
| Pin 84 | VSS — Ground |
Typical Applications
PIC17C762-16E/L is suitable for 6 applications: Industrial Control Panels, Motor Drive Front-End (PWM + ADC), Automotive Body & Chassis ECU, HVAC Climate Controllers, Legacy Embedded Systems Maintenance, Power Supply Monitoring & Sequencing.
Industrial Control Panels
PIC17C762-16E/L is well suited to industrial control panel applications thanks to its 16 MIPS throughput, 50 digital I/O lines, and extended -40 C to +125 C temperature rating. The integrated 16-channel 10-bit ADC handles analog sensor inputs (temperature, pressure, level), while PWM drives actuators and indicator lamps. Its OTP memory is acceptable because industrial panel firmware is typically frozen after qualification, and the 84-PLCC footprint is rugged for vibration-prone factory environments. Brown-out detect and watchdog timer ensure safe recovery from supply transients common on factory floors.
Recommended
Motor Drive Front-End (PWM + ADC)
PIC17C762-16E/L serves as a motor drive front-end controller by combining 16 MIPS throughput with PWM outputs and 16-channel 10-bit ADC. The ADC samples phase currents and DC bus voltage at high rate, while PWM modules generate the timing reference for the external gate driver. Extended temperature grade supports under-hood or industrial cabinet mounting. OTP memory locks in the motor control algorithm permanently, eliminating firmware tampering risks in safety-critical deployments. Note that this part lacks dedicated motor-control PWMs, so consider dsPIC33 for new high-performance motor designs.
Recommended
Automotive Body & Chassis ECU
PIC17C762-16E/L's extended -40 C to +125 C operating range and 84-PLCC rugged package make it suitable for legacy automotive body and chassis ECUs (window lift, seat controller, climate module). UART/SPI interfaces connect to vehicle network gateways, while the 10-bit ADC reads switch positions and sensor inputs. Because automotive ECUs require field-updatable firmware in modern programs, new designs should migrate to PIC18F8520 or dsPIC33 with CAN-FD support. OTP memory in PIC17C762 was historically acceptable for high-volume production runs where firmware stability is locked at the OEM.
Recommended
HVAC Climate Controllers
PIC17C762-16E/L fits HVAC climate controllers that require multiple temperature sensor inputs (NTC thermistors), fan-speed PWM outputs, and serial communication to a central building management system. The 16-channel ADC reads thermistor bridges, while PWM drives variable-speed fans and damper actuators. UART/SPI enable Modbus or proprietary protocols to BMS gateways. The extended temperature grade ensures reliable operation in plant rooms and rooftop units where ambient can exceed 70 C. OTP memory is acceptable because HVAC controller firmware rarely changes once deployed.
Recommended
Legacy Embedded Systems Maintenance
PIC17C762-16E/L is most commonly deployed today in maintenance and repair of legacy embedded systems originally designed around the PIC17C family in the late 1990s and 2000s. Obsolete industrial machines, scientific instruments, and specialty medical equipment often have 10-20 year service lives, and the PIC17C762-16E/L remains the only authorized part for those PCBs. Engineers maintaining these systems should stock critical PIC17C762-16E/L units and consider board-level redesign to flash-based PIC18F8520 when the legacy platform enters major overhaul. Octopart and Heisener track remaining factory and distributor inventory.
Recommended
Power Supply Monitoring & Sequencing
PIC17C762-16E/L can monitor multi-rail power supply health by sampling output voltages through its 16-channel 10-bit ADC, sequencing power-up via GPIO-controlled MOSFETs, and logging faults over UART. The 16 MIPS throughput enables fast fault response (microsecond-scale) for crowbar or hot-swap protection. Brown-out detect and watchdog timer add safety layers against firmware lockup. While PIC17C762 is OTP, the controller is typically co-located with the PSU as a one-time-programmed housekeeping unit. Consider migrating to PIC18F or dsPIC33 for any new PSU design.
Recommended
Recommended Products Summary
Engineering reference data for PIC17C762-16E/L — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC17C762-16/L | PIC17C762-16I/L | PIC17C756A-16I/PT | PIC17C756A-16E/PT | PIC17C762-16/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| 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 |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Program Memory | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP |
| Temperature Grade (E suffix) | Extended -40 C to +125 C | Commercial 0 C to +70 C | Industrial -40 C to +85 C | Industrial -40 C to +85 C | Extended -40 C to +125 C | Commercial 0 C to +70 C |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| ADC Channels | 16 x 10-bit | 16 x 10-bit | 16 x 10-bit | 12 x 10-bit | 12 x 10-bit | 16 x 10-bit |
| RAM | 678 bytes | 678 bytes | 678 bytes | 454 bytes | 454 bytes | 678 bytes |
| 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 | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
Key Differentiators
- Extended -40 C to +125 C operating temperature range (vs PIC17C762-16/L)
- Highest RAM density in PIC17C762 family (678 bytes) (vs PIC17C756A-16I/PT)
- 16-channel 10-bit ADC vs 12-channel on PIC17C756A (vs PIC17C756A-16E/PT)
Design Notes
PIC17C762-16E/L operates from a single 4.5 V to 5.5 V supply on VDD/AVDD. Place a 100 nF ceramic decoupling capacitor within 5 mm of each VDD/VSS pair (three pairs on this 84-PLCC) and a single 10 uF bulk tantalum or aluminum polymer cap at the board entry point. Analog supply AVDD should be filtered with a ferrite bead or 10 ohm resistor from VDD plus a dedicated 100 nF cap to AVSS to keep ADC reference noise below 1 LSB at 10-bit resolution.
PIC17C762-16E/L is OTP (One-Time-Programmable) - once the program memory is written, it cannot be erased or rewritten. This means every prototype unit must be fused carefully with verified firmware; a single bug bricks the device permanently. Plan firmware development on a flash-based sister part (PIC18F8520 or PIC17C762 flash variant) before committing production quantities, or stock pre-programmed OTP units from a programming house like Microchip's programming service.
Estimated: at maximum clock 16 MHz, VDD = 5.5 V, all I/O toggling at full CMOS load, typical core current is approximately 25 mA (~138 mW). The 84-PLCC package has a theta_JA around 35 C/W in still air, so junction-to-ambient rise is ~5 C - well within the -40 C to +125 C operating range. No external heatsink is required, but ensure at least 100 sq mm of unbroken ground copper under the package for thermal spreading.
Compliance Information
Compliance data not explicitly stated in verified web snippets. PIC17C762-16E/L was released before AEC-Q100 was widely applied to legacy 8-bit MCUs, and the part is marked obsolete by Microchip. Confirm compliance via Microchip's environmental compliance portal if required for new procurement.
