PIC17C762T-16/L - 16MHz 8-bit OTP MCU 84-PLCC | Microchip
MPN: PIC17C762T-16/L ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $14.1 | $1,410.00 |
| 500 | $12.4 | $6,200.00 |
| 1,000 | $11.05 | $11,050.00 |
PIC17C762T-16/L Overview
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.
Drop-in alternatives for PIC17C762T-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 PIC17C762T-16/L (same form factor and footprint) — differing in Program Memory Size, Core Architecture, Data Bus Width, Hardware Multiplier, Instruction Cycle Time.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC17C762-16/L
✅ Drop-In✓ In Stock
$12.5 / Unit
View Datasheet →PIC17C762-16I/L
✅ Drop-In📋 Reference alternative (not in catalog)
PIC17C762-33I/L
✅ Drop-In📋 Reference alternative (not in catalog)
PIC17C762-16/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$9.25 / Unit
View Datasheet →PIC17C762-33I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.85 / Unit
View Datasheet →PIC17C756AT-33I/L
✅ Drop-In✓ In Stock
$12.4 / Unit
View Datasheet →PIC17C756A-16I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$11.2 / Unit
View Datasheet →PIC17C762T-16/L Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit RISC (Harvard, PIC17C) |
| Instruction Set Width | 16-bit instructions |
| Number of Instructions | 58 |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 16 KB (8K x 16) |
| Maximum Clock Frequency | 16 MHz |
| Instruction Cycle Time | 121 ns (single-cycle, non-branch) |
| Supply Voltage (Vdd) | 4.5 V to 5.5 V |
| Number of I/O Ports | 50 |
| Data Bus Width | 16-bit (program) / 8-bit (data) |
| Operating Temperature | 0C to +70C (Commercial) |
| Package Type | 84-PLCC (J-Lead, 29.31 x 29.31 mm) |
| Terminal Form | J-Bend |
| Package Code | QCCJ |
| Mounting Type | Surface Mount |
PIC17C762T-16/L qccj Pin Configuration Guide
Pin configuration for PIC17C762T-16/L (qccj package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC17C762T-16/L.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC17C762T-16/L is suitable for 6 applications: Industrial Automation Controllers, Consumer Electronics HMI Panels, Medical Device Front-End Boards, Embedded Control Upgrade Path, Hobby and Education 8-Bit Development, Legacy Industrial Card Replacement.
Industrial Automation Controllers
The PIC17C762T-16/L is a strong fit for industrial PLCs and machine controllers because it delivers 8.25 MIPS throughput at 16 MHz - enough to service several PWM outputs, scan keypads, and run a polled MODBUS RTU master. Its 50 general-purpose I/O lines comfortably cover digital inputs, relay drivers, encoder feedback, and 7-segment or LCD HMI within one PLCC. The 4.5 V to 5.5 V single-rail supply matches the classic 24 V-to-5 V buck rails used on factory floors, and the commercial 0C to +70C grade suits indoor control cabinets. Designers should add TVS diodes on the 5 V rail and opto-isolation on the I/O to maintain the PIC17C762T-16/L's noise immunity in motor-drive environments.
Recommended
Consumer Electronics HMI Panels
With 50 I/O lines and 16 KB OTP, the PIC17C762T-16/L is well suited as the host controller for consumer HMI panels that scan key matrices, drive character LCDs, and bridge to a master SoC over UART. The 84-PLCC package gives PCB designers enough routable I/O for up to an 8 x 8 keypad plus 16 indicators and 4 PWM channels for backlight or buzzer control. The 4.5-5.5 V supply and 8.25 MIPS throughput are sufficient for debounced keypad polling at sub-10 ms latency. Compared to a flash MCU, the OTP memory locks firmware at production, protecting brand assets from in-field rewriting.
Recommended
Medical Device Front-End Boards
The PIC17C762T-16/L fits medical front-ends (vital-sign monitors, infusion pumps, lab analyzers) where deterministic 121 ns instruction cycles simplify IEC 62304 software verification. Its 50 I/O supports an LCD dot-matrix, optical encoder input, isolated UART link, and individual LED status indicators. The 4.5-5.5 V supply, commercial 0C to +70C grade, and 16 MHz internal RC-friendly design allow the chip to share a regulated 5 V rail with low-noise analog front-ends, simplifying EMC pre-compliance testing. Always validate the full safety-class isolation externally; the PIC17C762T-16/L is not itself a safety controller.
Recommended
Embedded Control Upgrade Path
For sites that previously shipped PIC17C4x or PIC16C7x designs, the PIC17C762T-16/L offers an upgrade path with the same 8-bit RISC culture but a larger 16 KB OTP bank and 50 I/O. This is helpful when the legacy 4 KB code no longer fits but the engineer wants to preserve the assembly codebase. The 16 MHz / 8.25 MIPS throughput delivers nearly 4x the instruction bandwidth of the classic PIC16C7x, and the 84-PLCC footprint fits within the same PCB outline as the older 40-pin DIP adapter boards. Engineers planning migrations should validate the OTP toolchain and ICC port settings before locking the design.
Recommended
Hobby and Education 8-Bit Development
Universities and hobbyists use the PIC17C762T-16/L on PLCC development boards to teach 8-bit RISC concepts, instruction pipelining, and assembly programming. The 84-PLCC socketed carrier simplifies learning without soldering, and the 58-instruction set is compact enough to cover in a single semester. The 16 MHz cycle time produces clean, observable timing on a logic analyzer, making it a strong teaching vehicle. Note that OTP programming requires a dedicated programmer such as MPLAB PM3 - plan the lab budget accordingly.
Recommended
Legacy Industrial Card Replacement
The PIC17C762T-16/L is specified as an active part number, allowing service depots to rebuild long-running production equipment whose original PIC17C762-16/L parts have failed. Its 84-PLCC socket fits original through-hole PLCC sockets, so card-level swap-ins require no board modification. Verify the date-code via the on-chip ID read to ensure genuine parts, and document cross-reference to the 33 MHz variant where firmware timing margins allow.
Recommended
Recommended Products Summary
Engineering reference data for PIC17C762T-16/L — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC17C762-16/L | PIC17C762-16I/L | PIC17C762-33I/L | PIC17C756AT-33I/L |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 84-PLCC | 84-PLCC | 84-PLCC | 84-PLCC | 84-PLCC |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 33 MHz | 33 MHz |
| Program Memory Size | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP | 32 KB OTP |
| Number of I/O Ports | 50 | 50 | 50 | 50 | 50 |
| Temperature Grade | 0C to +70C (Commercial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| 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 |
| Instruction Throughput | 8.25 MIPS | 8.25 MIPS | 8.25 MIPS | 16.5 MIPS | 16.5 MIPS |
| Memory Type | OTP | OTP | OTP | OTP | OTP |
| Carrier Format | Tape & Reel (-T suffix) | Tube / Tray | Tube / Tray | Tube / Tray | Tube / Tray |
Key Differentiators
- Tape-and-reel carrier format (vs PIC17C762-16/L)
- Commercial vs industrial temperature grade (vs PIC17C762-16I/L)
- 16 MHz (8.25 MIPS) vs 33 MHz (16.5 MIPS) speed (vs PIC17C762-33I/L)
Design Notes
Estimated: at 5 V / 16 MHz the PIC17C762T-16/L draws approximately 10-15 mA, dominated by I/O switching and internal logic. Place one 0.1 uF X7R ceramic bypass capacitor within 5 mm of every Vdd/Vss pin pair of the 84-PLCC package, and a bulk 10 uF tantalum or polymer cap on the 5 V rail near the IC. The PLCC socket adds 50-100 milliohms of lead inductance, so use short, wide supply traces to minimize switching-spike amplitude.
Route the 16 MHz oscillator traces (OSC1/OSC2) enclosed by a guard ring tied to GND, and keep clock traces no longer than 10 mm to limit radiation. The 84-PLCC pin spacing (1.27 mm pitch) provides enough room for two signal tracks between pins on a 0.1 mm/oz outer layer, but use a 4-layer stack with a dedicated ground plane for switching-noise-sensitive analog rails. Place MCLR trace away from PWM outputs and add a 1 kohm pull-up plus 10 nF capacitor for hardware-reset debouncing.
Because the PIC17C762T-16/L is OTP, any firmware bug discovered after programming is unrecoverable - validate code on a flash-equivalent PIC18F8520 (factory-recommended) or PIC17C family prototype before committing the OTP unit. Ensure the device's ID-read unlock sequence is honored before in-circuit programming; otherwise, the OTP cell may lock out permanently. The 50 I/O must each be configured to a defined state at reset to avoid input-floating oscillation on noise-sensitive boards.
Compliance Information
Compliance data not present in verified web sources; [DATA_NEEDED] markers used for individual spec values. The PIC17C762T-16/L is an aging OTP part from the early-mid 2000s and was not generally AEC-Q100 qualified for automotive.
