PIC17C762T-16I/L - 16MHz 8-bit EPROM MCU, 16KB OTP, 10-bit ADC | Microchip
MPN: PIC17C762T-16I/L ✗ End of LifePIC17C762T-16I/L Overview
An EPROM-based microcontroller is a programmable single-chip computer whose program memory uses Erasable Programmable Read-Only Memory that can be erased by UV exposure and re-programmed, supporting prototype and pre-production development before mask-ROM commit. The PIC17C family sits in the broader taxonomy 8-bit MCU -> microcontroller -> embedded processor -> semiconductor, designed for applications requiring high I/O count and integrated analog.
The PIC17C762T-16I/L delivers 16MHz maximum clock input yielding a 121 ns instruction cycle, with all instructions single-cycle except program branches and table reads/writes (two-cycle). The RISC architecture provides 58 single-word instructions, an 8-bit x 8 single-cycle hardware multiplier, and a 16-level deep hardware stack for fast interrupt response. It supports up to 50 digital I/O lines plus a 16-channel 10-bit ADC for sensor and mixed-signal acquisition.
The CMOS process technology keeps operating current low while supporting a 4.5V to 5.5V supply. Industrial temperature grade -40C to +85C enables deployment in harsh environments. The 84-PLCC J-lead package supports standard surface-mount assembly with through-hole-like mechanical robustness, easing rework and prototyping.
Typical applications include industrial automation controllers, motor control front-ends, consumer electronics with analog sensing, embedded data acquisition systems, and instrumentation requiring 10-bit measurement accuracy. The wide I/O count and integrated ADC simplify BOM in mixed-signal designs.
When designing, allocate the upper address range for GPR and the lower range for SFR, follow Microchip PIC17C programming specs for EPROM erase windows (windowed package variants), and budget ADC acquisition time against instruction cycles. The 'T' suffix denotes tape-and-reel packaging and 'I' denotes industrial temperature grade.
This page synthesizes distributor pricing, drop-in PIC17C762 alternatives, and practical design notes from the Microchip datasheet that engineering teams will not find aggregated on a single vendor page.
Drop-in alternatives for PIC17C762T-16I/L — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
PIC17C762-16I/L
✅ Drop-In📋 Reference alternative (not in catalog)
PIC17C762-33I/L
✅ Drop-In📋 Reference alternative (not in catalog)
PIC17C762T-16I/L Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC |
| Family | PIC17C |
| Program Memory Type | EPROM (OTP windowless variant in this suffix) |
| Program Memory Size | 16 KB (8K x 16) |
| RAM | 678 bytes |
| Maximum Clock Frequency | 16 MHz |
| Instruction Cycle | 121 ns (single-cycle, except branches/table R-W which are 2-cycle) |
| Supply Voltage (Vdd) | 4.5 V to 5.5 V |
| ADC | 10-bit, 16 channels |
| I/O Ports | 50 (maximum) |
| Hardware Multiplier | 8 x 8 single-cycle |
| Instruction Set Size | 58 single-word instructions |
| Hardware Stack Depth | 16 levels |
| Operating Temperature | -40 C to +85 C (Industrial, 'I' suffix) |
| Package | 84-PLCC (29.31 x 29.31 mm), J-bend |
| Mounting Type | Surface Mount |
| Packaging Format | Tape & Reel ('T' suffix) |
PIC17C762T-16I/L Pin Configuration
| Pin 1 | OSC1 — Crystal/Resonator or external clock input |
| Pin 2 | OSC2 — Crystal/Resonator output |
| Pin 3 | MCLR — Master Clear (reset) input |
| Pin 4 | VSS — Ground reference |
| Pin 5 | VDD — Positive supply 4.5V-5.5V |
| Pin 6 | RA0 — PORTA bit 0 (digital I/O or analog AN0) |
| Pin 7 | RA1 — PORTA bit 1 (digital I/O or analog AN1) |
| Pin 8 | RA2 — PORTA bit 2 (digital I/O or analog AN2) |
| Pin 9 | RA3 — PORTA bit 3 (digital I/O or analog AN3) |
| Pin 10 | RA4 — PORTA bit 4 (digital I/O or analog AN4) |
| Pin 11 | RA5 — PORTA bit 5 (digital I/O or analog AN5) |
| Pin 12 | VSS — Ground |
| Pin 13 | VDD — Positive supply |
| Pin 14 | RB0 — PORTB bit 0 (digital I/O or analog AN8) |
| Pin 15 | RB1 — PORTB bit 1 (digital I/O or analog AN9) |
| Pin 16 | RB2 — PORTB bit 2 (digital I/O or analog AN10) |
| Pin 17 | RB3 — PORTB bit 3 (digital I/O or analog AN11) |
| Pin 18 | RB4 — PORTB bit 4 (digital I/O or analog AN12) |
| Pin 19 | RB5 — PORTB bit 5 (digital I/O or analog AN13) |
| Pin 20 | RB6 — PORTB bit 6 (digital I/O or analog AN14) |
| Pin 21 | RB7 — PORTB bit 7 (digital I/O or analog AN15) |
| Pin 22 | RC0 — PORTC bit 0 |
| Pin 23 | RC1 — PORTC bit 1 |
| Pin 24 | RC2 — PORTC bit 2 |
| Pin 25 | RC3 — PORTC bit 3 |
| Pin 26 | RC4 — PORTC bit 4 |
| Pin 27 | RC5 — PORTC bit 5 |
| Pin 28 | RC6 — PORTC bit 6 |
| Pin 29 | RC7 — PORTC bit 7 |
| Pin 30 | VSS — Ground |
| Pin 31 | RD0 — PORTD bit 0 |
| Pin 32 | RD1 — PORTD bit 1 |
| Pin 33 | RD2 — PORTD bit 2 |
| Pin 34 | RD3 — PORTD bit 3 |
| Pin 35 | RD4 — PORTD bit 4 |
| Pin 36 | RD5 — PORTD bit 5 |
| Pin 37 | RD6 — PORTD bit 6 |
| Pin 38 | RD7 — PORTD bit 7 |
| Pin 39 | RE0 — PORTE bit 0 |
| Pin 40 | RE1 — PORTE bit 1 |
| Pin 41 | RE2 — PORTE bit 2 |
| Pin 42 | VSS — Ground |
| Pin 43 | VDD — Positive supply |
| Pin 44 | NC — Not connected (per datasheet) |
| Pin 45 | NC — Not connected (per datasheet) |
| Pin 46 | NC — Not connected (per datasheet) |
| Pin 47 | NC — Not connected (per datasheet) |
| Pin 48 | NC — Not connected (per datasheet) |
| Pin 49 | NC — Not connected (per datasheet) |
| Pin 50 | T0CKI — Timer0 external clock input |
| Pin 51 | INT — External interrupt input |
| Pin 52 | VSS — Ground |
| Pin 53 | VDD — Positive supply |
| Pin 54 | NC — Not connected (per datasheet) |
| Pin 55 | NC — Not connected (per datasheet) |
| Pin 56 | NC — Not connected (per datasheet) |
| Pin 57 | NC — Not connected (per datasheet) |
| Pin 58 | NC — Not connected (per datasheet) |
| Pin 59 | NC — Not connected (per datasheet) |
| Pin 60 | RF0 — PORTF bit 0 |
| Pin 61 | RF1 — PORTF bit 1 |
| Pin 62 | RF2 — PORTF bit 2 |
| Pin 63 | RF3 — PORTF bit 3 |
| Pin 64 | RF4 — PORTF bit 4 |
| Pin 65 | RF5 — PORTF bit 5 |
| Pin 66 | RF6 — PORTF bit 6 |
| Pin 67 | RF7 — PORTF bit 7 |
| Pin 68 | RG0 — PORTG bit 0 |
| Pin 69 | RG1 — PORTG bit 1 |
| Pin 70 | RG2 — PORTG bit 2 |
| Pin 71 | RG3 — PORTG bit 3 |
| Pin 72 | RG4 — PORTG bit 4 |
| Pin 73 | VSS — Ground |
| Pin 74 | VDD — Positive supply |
| Pin 75 | NC — Not connected (per datasheet) |
| Pin 76 | NC — Not connected (per datasheet) |
| Pin 77 | NC — Not connected (per datasheet) |
| 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 | VSS — Ground |
Typical Applications
PIC17C762T-16I/L is suitable for 6 applications: Industrial Automation Controllers, Motor Control Front-Ends, Consumer Electronics with Analog Sensing, Embedded Data Acquisition Systems, Instrumentation and Test Equipment, HVAC and Building Control.
Industrial Automation Controllers
The PIC17C762T-16I/L fits industrial automation controllers where 50 I/O lines and 16-channel 10-bit ADC handle sensor matrix, keypad, and actuator drive in a single chip. Its 16 MHz clock and 121 ns instruction cycle provide responsive real-time control loops for PLC-style discrete I/O expansion. The -40C to +85C industrial grade supports factory-floor deployment without additional thermal hardening, while the 84-PLCC J-lead package eases socket-based prototyping and field replacement.
Recommended
Motor Control Front-Ends
The PIC17C762T-16I/L is a strong fit for motor control front-ends that read Hall sensors, current shunts, and position encoders via the 16-channel 10-bit ADC, then drive H-bridge FETs through 50 GPIO pins. With 121 ns instruction cycle and 8x8 single-cycle hardware multiplier, it executes PI control loops with sub-microsecond latency. The wide ADC channel count also supports multi-axis simultaneous sensing in robotics and CNC machines.
Recommended
Consumer Electronics with Analog Sensing
The PIC17C762T-16I/L serves consumer appliances (washing machines, microwaves, HVAC controls) where 16 ADC inputs read temperature, humidity, and level sensors while 50 GPIO drive displays, keypads, and relays. Its 16KB OTP program memory accommodates full feature sets with menu logic, fault diagnostics, and user-interface state machines. The 4.5V-5.5V single-rail operation simplifies power supply design in cost-sensitive consumer products.
Recommended
Embedded Data Acquisition Systems
The PIC17C762T-16I/L fits 16-channel data loggers and embedded data acquisition front-ends because its 10-bit ADC multiplexes 16 analog inputs sequentially under firmware control. With 678 bytes RAM and 16KB EPROM, the device buffers sample blocks and stores calibration tables locally. The 16 MHz clock enables ~50 ksps aggregate throughput across multiple channels, suitable for slow industrial telemetry and instrumentation logging.
Recommended
Instrumentation and Test Equipment
The PIC17C762T-16I/L supports bench-top instrumentation and test equipment where 16 ADC inputs digitize multi-range analog signals and 50 GPIO drive LCD segments, LED bargraphs, and keypad matrices. Its deterministic 121 ns instruction cycle and RISC architecture produce repeatable measurement timing critical for test gear calibration cycles. The 84-PLCC package is socket-friendly, allowing rapid chip swaps during validation testing.
Recommended
HVAC and Building Control
The PIC17C762T-16I/L targets HVAC and building control systems where the 16-channel 10-bit ADC reads zone temperatures, duct pressures, and humidity transducers while GPIO drives damper motors, fan relays, and display panels. The industrial -40C to +85C grade handles unconditioned mechanical rooms and rooftop unit enclosures. Combined with the EPROM OTP memory model, it locks firmware at production preventing field tampering with safety-critical control logic.
Recommended
Recommended Products Summary
Engineering reference data for PIC17C762T-16I/L — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC17C762-16I/L | PIC17C762-33I/L |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 84-PLCC (29.31x29.31) | 84-PLCC (29.31x29.31) - same | 84-PLCC (29.31x29.31) - same |
| Maximum Clock Frequency | 16 MHz | 16 MHz (same) | 33 MHz (+106%) |
| Program Memory | 16 KB OTP | 16 KB OTP (same) | 16 KB OTP (same) |
| ADC | 10-bit, 16 channels | 10-bit, 16 channels (same) | 10-bit, 16 channels (same) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (same) | -40C to +85C (same) |
| Packaging Carrier | Tape & Reel | Tray | Tray |
| Lifecycle Status | NRND | NRND (same) | NRND (same) |
Key Differentiators
- Drop-in same-package replacement option at the same silicon (vs PIC17C762-16I/L)
- Higher clock speed option in same package for time-critical loops (vs PIC17C762-33I/L)
- 16 ADC channels vs PIC18F family 12-channel max in 84-PLCC (vs PIC18F8722)
Design Notes
Estimated: PIC17C762T-16I/L active current at 16 MHz with all peripherals on is approximately 25 mA at 5V, yielding 125 mW core dissipation. Add ADC reference current (typically 1-2 mA) and I/O sink/source load current separately. Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of each VDD pin, plus a bulk 10 uF tantalum near the chip. The PLCC84 package has multiple VDD/VSS pins (typical 4-5 pairs); all must be connected for stable operation.
Estimated: thermal resistance theta_JA for 84-PLCC on a standard 4-layer PCB is approximately 35 C/W. At 125 mW active power and 25C ambient, junction rises only 4.4 C, leaving headroom to +85C industrial limit. However, if I/O pins source/sink significant current (20 mA per pin x 16 pins = 640 mA load), power dissipation rises to >3 W and a copper heatsink pour on PLCC underside becomes essential.
Use a 4-layer PCB with dedicated ground and power planes for the PIC17C762T-16I/L. Route the crystal/oscillator traces within 10 mm of OSC1/OSC2 with grounded guard ring on both sides to prevent clock noise injection. Place analog input traces away from digital switching lines; the 84-PLCC package has PORTB and PORTA as analog-capable pins so isolate those on inner PCB layers if possible. Provide a programming header footprint for in-circuit serial programming (ICSP) via RB6/RB7.
Do not operate PIC17C762T-16I/L below 4.5V or above 5.5V - the EPROM read margin and ADC reference become unreliable outside this range. Configuration word bits must be programmed correctly; an incorrect oscillator select can cause the device to fail to start with no clear symptom. The 16-level hardware stack has no overflow flag; deeply nested interrupts can corrupt return addresses - keep interrupt handlers minimal and avoid recursion. EPROM parts cannot be electrically erased; verify code in windowed PIC17C762JW prototypes before committing to OTP production.
Compliance Information
RoHS and REACH status not explicitly listed in verified web data - marked unknown. PIC17C series was launched in the 1990s before RoHS standardization, but Microchip's later revisions ship in lead-free packages. AEC-Q100 not applicable for non-automotive 8-bit MCU. Conflict-minerals declaration compliant per Microchip policy.
