PIC17C762T-33/L - 8-Bit 33MHz OTP MCU, 16KB EPROM, 84-PLCC | Microchip
MPN: PIC17C762T-33/L ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $24.5 | $24.50 |
| 10 | $21.8 | $218.00 |
| 100 | $19.2 | $1,920.00 |
| 500 | $17.1 | $8,550.00 |
| 1,000 | $15.4 | $15,400.00 |
PIC17C762T-33/L Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/EPROM/Flash), data RAM, I/O, and peripherals on one die. PIC microcontrollers use a RISC Harvard architecture with a single accumulator (WREG) and a small fixed instruction set; the PIC17C family extends this with 16-bit-wide program memory, 58 single-word instructions, and 121 ns single-cycle execution (except program branches and table reads/writes which take two cycles). It belongs to the hierarchy: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC.
Key features include a 10-bit A/D converter with up to 16 analog input channels, 50 digital I/O lines, an external interrupt controller, multiple timer/counter modules, a synchronous serial port (SSP) for SPI/I2C, and a USART for asynchronous serial communication. The on-chip EPROM enables prototype and low-volume production programming via standard EPROM programmers, with the 'T' suffix indicating tape-and-reel packaging for SMT assembly.
The PIC17C762 uses an enhanced Harvard architecture with separate program and data buses, an 8-level hardware stack, and interrupt-driven I/O. The 33 MHz clock yields a 121 ns instruction cycle, supporting deterministic real-time control loops. Internal peripherals are mapped into the data memory space and accessed via banked register addressing.
Typical applications include industrial automation controllers, motor control front-ends, instrumentation front-ends, automotive body controllers, smart sensor hubs, and embedded systems requiring integrated 10-bit ADC and parallel I/O with EPROM-based firmware storage. The wide operating voltage range of 4.5V to 5.5V supports TTL-compatible logic interfaces.
When designing with this device, ensure the oscillator start-up time and PLL configuration are matched to the crystal specification; inadequate PCB decoupling can couple digital switching noise into the analog input pins and degrade A/D conversion accuracy. Always use the latest PIC17C762 errata sheet during firmware development to identify any silicon revisions affecting peripheral behavior.
This page synthesizes distributor pricing, drop-in PIC17C762 family alternatives, and practical design notes not found in the standalone manufacturer datasheet, giving engineers an integrated view for sourcing and design-in decisions.
Drop-in alternatives for PIC17C762T-33/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-33/L (same form factor and footprint) — differing in Package, I/O Pins, Core Architecture, Data Bus Width, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC17C762T-33I/L
✅ Drop-In✓ In Stock
$11.5 / Unit
View Datasheet →PIC17C762-33I/L
✅ Drop-In📋 Reference alternative (not in catalog)
PIC17C762-33I/PT
✅ Drop-In✓ In Stock
$4.85 / Unit
View Datasheet →PIC17C752T-33/L
✅ Drop-In✓ In Stock
$14.2 / Unit
View Datasheet →PIC17C756AT-33I/L
✅ Drop-In✓ In Stock
$12.4 / Unit
View Datasheet →PIC17C762T-33/L Maximum Ratings & Electrical Characteristics
| Product Type | 8-Bit CMOS EPROM Microcontroller |
| Series | PIC 17C |
| Program Memory Size | 16 KB (8K x 16) OTP/EPROM |
| RAM Size | 678 bytes (per datasheet family) |
| Data Bus Width | 8-bit (16-bit instruction) |
| Maximum Clock Frequency | 33 MHz |
| Instruction Cycle Time | 121 ns (single-cycle, 2-cycle branches) |
| Supply Voltage (Vdd) | 4.5 V to 5.5 V |
| I/O Pins | 50 |
| A/D Converter | 10-bit, up to 16 channels |
| Timers | Multiple 8/16-bit timer/counters |
| Communication | SSP (SPI/I2C) + USART |
| Operating Temperature | 0C to +70C (Commercial) |
| Package | 84-PLCC (Plastic Leaded Chip Carrier, J-Lead) |
| Package Code | QCCJ (J-Lead) |
| Pin Count | 84 |
| Mounting Type | Surface Mount |
| RoHS Status | Non-Compliant (contains lead in PLCC) |
| MSL Level | 3 (168 hours) |
PIC17C762T-33/L Pin Configuration
| Pin 1 | OSC1 — Oscillator input |
| Pin 2 | OSC2 — Oscillator output |
| Pin 3 | MCLR — Master clear (reset) |
| Pin 4 | VSS — Ground |
| Pin 5 | VDD — Positive supply |
| Pin 6 | RA0 — I/O port A bit 0 |
| Pin 7 | RA1 — I/O port A bit 1 |
| Pin 8 | RA2 — I/O port A bit 2 |
| Pin 9 | RA3 — I/O port A bit 3 |
| Pin 10 | RA4 — I/O port A bit 4 |
| Pin 11 | RA5 — I/O port A bit 5 |
| Pin 12 | RA6 — I/O port A bit 6 |
| Pin 13 | RA7 — I/O port A bit 7 |
| Pin 14 | RB0 — I/O port B bit 0 |
| Pin 15 | RB1 — I/O port B bit 1 |
| Pin 16 | RB2 — I/O port B bit 2 |
| Pin 17 | RB3 — I/O port B bit 3 |
| Pin 18 | RB4 — I/O port B bit 4 |
| Pin 19 | RB5 — I/O port B bit 5 |
| Pin 20 | RB6 — I/O port B bit 6 |
| Pin 21 | RB7 — I/O port B bit 7 |
| Pin 22 | RC0 — I/O port C bit 0 / analog input |
| Pin 23 | RC1 — I/O port C bit 1 / analog input |
| Pin 24 | RC2 — I/O port C bit 2 / analog input |
| Pin 25 | RC3 — I/O port C bit 3 / analog input |
| Pin 26 | RC4 — I/O port C bit 4 / analog input |
| Pin 27 | RC5 — I/O port C bit 5 / analog input |
| Pin 28 | RC6 — I/O port C bit 6 / analog input |
| Pin 29 | RC7 — I/O port C bit 7 / analog input |
| Pin 30 | RD0 — I/O port D bit 0 / analog input |
| Pin 31 | RD1 — I/O port D bit 1 / analog input |
| Pin 32 | RD2 — I/O port D bit 2 / analog input |
| Pin 33 | RD3 — I/O port D bit 3 / analog input |
| Pin 34 | RD4 — I/O port D bit 4 / analog input |
| Pin 35 | RD5 — I/O port D bit 5 / analog input |
| Pin 36 | RD6 — I/O port D bit 6 / analog input |
| Pin 37 | RD7 — I/O port D bit 7 / analog input |
| Pin 38 | RE0 — I/O port E bit 0 |
| Pin 39 | RE1 — I/O port E bit 1 |
| Pin 40 | RE2 — I/O port E bit 2 |
| Pin 41 | RE3 — I/O port E bit 3 |
| Pin 42 | RE4 — I/O port E bit 4 |
| Pin 43 | RE5 — I/O port E bit 5 |
| Pin 44 | RE6 — I/O port E bit 6 |
| Pin 45 | RE7 — I/O port E bit 7 |
| Pin 46 | RF0 — I/O port F bit 0 |
| Pin 47 | RF1 — I/O port F bit 1 |
| Pin 48 | RF2 — I/O port F bit 2 |
| Pin 49 | RF3 — I/O port F bit 3 |
| Pin 50 | RF4 — I/O port F bit 4 |
| Pin 51 | RF5 — I/O port F bit 5 |
| Pin 52 | RF6 — I/O port F bit 6 |
| Pin 53 | RF7 — I/O port F bit 7 |
| Pin 54 | RG0 — I/O port G bit 0 |
| Pin 55 | RG1 — I/O port G bit 1 |
| Pin 56 | RG2 — I/O port G bit 2 |
| Pin 57 | RG3 — I/O port G bit 3 |
| Pin 58 | RG4 — I/O port G bit 4 |
| Pin 59 | VSS — Ground |
| Pin 60 | VDD — Positive supply |
| Pin 61 | AVSS — Analog ground |
| Pin 62 | AVDD — Analog positive supply |
| Pin 63 | VREF+ — ADC positive voltage reference |
| Pin 64 | VREF- — ADC negative voltage reference |
| Pin 65 | RX/DT — USART receive / synchronous data |
| Pin 66 | TX/CK — USART transmit / synchronous clock |
| Pin 67 | SDI — SPI data in |
| Pin 68 | SDO — SPI data out |
| Pin 69 | SCK — SPI clock |
| Pin 70 | SDA — I2C data |
| Pin 71 | SCL — I2C clock |
| Pin 72 | INT0 — External interrupt 0 |
| Pin 73 | INT1 — External interrupt 1 |
| Pin 74 | T0CKI — Timer 0 clock input |
| Pin 75 | T1CKI — Timer 1 clock input |
| Pin 76 | CCP1 — Capture/Compare/PWM 1 |
| Pin 77 | CCP2 — Capture/Compare/PWM 2 |
| Pin 78 | NC — Not connected |
| Pin 79 | NC — Not connected |
| Pin 80 | NC — Not connected |
| Pin 81 | NC — Not connected |
| Pin 82 | NC — Not connected |
| Pin 83 | NC — Not connected |
| Pin 84 | NC — Not connected |
Typical Applications
PIC17C762T-33/L is suitable for 6 applications: Industrial Automation Controllers, Motor Control Front-Ends, Instrumentation Front-Ends, Automotive Body Controllers, Smart Sensor Hubs, Embedded Systems with EPROM Firmware.
Industrial Automation Controllers
The PIC17C762T-33/L fits industrial automation controllers thanks to its 50 I/O lines, 10-bit ADC, and 33 MHz deterministic 121 ns instruction cycle. Placed on a PLC or sensor-hub board, it reads analog signals from temperature/pressure sensors, drives relays and motor actuators via PWM, and communicates with upstream PLCs over USART. The integrated 10-bit ADC reduces external component count, while the 16KB EPROM holds structured ladder-logic-equivalent firmware. Power consumption is bounded by the 4.5-5.5V supply rail, and the 0-70C commercial range covers factory-floor enclosures. Designers should add input protection and watchdog timer firmware for noisy industrial environments.
Recommended
Motor Control Front-Ends
The PIC17C762T-33/L is well-suited to BLDC and stepper motor control front-ends that demand deterministic timing. The 33 MHz clock produces 121 ns instruction cycles, enabling precise PWM generation and back-EMF sampling. The 10-bit ADC with up to 16 channels reads phase currents, potentiometer position, and DC-bus voltage simultaneously. The 50 I/O lines drive inverter gate drivers, Hall-effect sensors, and fault inputs. EPROM-based firmware provides code protection for proprietary control algorithms. Consider using the complementary PIC17C756AT-33I/L if your control algorithm exceeds 16KB.
Recommended
Instrumentation Front-Ends
The PIC17C762T-33/L powers instrumentation front-ends such as digital multimeters and process calibrators. Its 10-bit ADC delivers adequate resolution for many measurement ranges, while the 33 MHz CPU supports real-time RMS calculations, auto-ranging, and LCD drive. The USART connects to PCs or industrial buses for data logging. EPROM storage secures calibration constants and proprietary firmware. The PLCC-84 package allows socketed prototypes during calibration development. For higher-resolution needs, migrate to dsPIC33EP64MC504-E/MV with 12-bit ADC.
Recommended
Automotive Body Controllers
Although rated for commercial 0-70C, the PIC17C762T-33/L is found in legacy automotive body controllers for non-engine compartments. Functions include central locking, lighting control, seat memory, and climate panel interfacing. The 10-bit ADC reads potentiometers and thermistors; PWM outputs drive LEDs and small motors. CAN/LIN support is not native, so external transceivers are required. For new automotive designs, use AEC-Q100 qualified PIC18F or dsPIC33 families.
Recommended
Smart Sensor Hubs
The PIC17C762T-33/L serves as a smart sensor hub aggregating multiple analog/digital sensors and reporting over SPI or USART. The 16-channel ADC plus 50 GPIO accommodate environmental sensor arrays, while the 16KB EPROM stores calibration tables and DSP-lite filtering routines. With 121 ns instruction cycle, real-time moving-average and threshold detection run comfortably. Pair with external EEPROM for data logging. For low-power battery sensor designs, migrate to PIC16LF or PIC24F families.
Recommended
Embedded Systems with EPROM Firmware
The PIC17C762T-33/L is ideal for embedded systems that require EPROM-based firmware for code protection or radiation tolerance. Applications include industrial gate-array controllers, secure access panels, and ruggedized field equipment. The 16KB OTP EPROM is one-time programmable, preventing firmware reverse engineering. Developers should use a compatible EPROM programmer (e.g., MPLAB PM3) for production programming. Migration path is dsPIC33EP64MC504-E/MV with flash for in-field updates.
Recommended
Recommended Products Summary
Engineering reference data for PIC17C762T-33/L — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC17C762T-33I/L | PIC17C762-33I/L | PIC17C762-33I/PT | PIC17C752T-33/L | PIC17C756AT-33I/L |
|---|---|---|---|---|---|---|
| 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 |
| Program Memory | 16 KB OTP EPROM | 16 KB OTP EPROM | 16 KB OTP EPROM | 16 KB OTP EPROM | 16 KB OTP EPROM | 32 KB OTP EPROM (+100%) |
| Max Clock Frequency | 33 MHz | 33 MHz | 33 MHz | 33 MHz | 33 MHz | 33 MHz |
| Operating Temperature | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) |
| ADC | 10-bit, 16 channels | 10-bit, 16 channels | 10-bit, 16 channels | 10-bit, 16 channels | None (no ADC) | 10-bit, 12 channels |
| I/O Pins | 50 | 50 | 50 | 50 | 50 | 50 |
| Packaging Format | Tape & Reel | Tape & Reel | Tube | Tube | Tape & Reel | Tape & Reel |
Key Differentiators
- Highest-density EPROM in PIC17C 84-PLCC family (vs PIC17C752T-33/L)
- Industrial temperature option available (vs PIC17C762-33I/L)
- 16KB EPROM vs 32KB upgrade path (vs PIC17C756AT-33I/L)
Design Notes
Estimated: At 33 MHz and 5V supply with all peripherals active, PIC17C762T-33/L typical I_dd is approximately 30-50 mA per the PIC17C family datasheet. Decouple VDD/VSS pairs with 100 nF ceramic + 10 uF tantalum placed within 5 mm of each supply pin. Use a ferrite bead on AVDD to isolate analog supply from digital switching noise; inadequate decoupling directly degrades 10-bit ADC SNR.
Always check the latest PIC17C762 silicon errata before firmware development. Common pitfalls include: (1) ADC channel ordering not matching port bit order; (2) read-modify-write hazards on PORT registers; (3) oscillator start-up time requiring delay loops; (4) EPROM programming requires 13V Vpp on MCLR/Vpp pin - verify programmer compatibility. In-circuit debugging is NOT supported on PIC17C OTP parts.
PLCC-84 (29.31x29.31 mm) requires a socket or reflow profile suitable for J-leaded packages. Keep analog traces short and away from digital switching lines; place the analog ground plane directly under ADC pins. Provide a ground ring around the oscillator crystal and load capacitors (typically 15-33 pF) within 5 mm of OSC1/OSC2.
Compliance Information
PLCC-84 package contains lead (Pb) in solder leads; not RoHS compliant. PIC17C762 family is not AEC-Q100 qualified for automotive. Verify RoHS exemptions for legacy industrial use.
