PIC17C762T-33I/PT - 33 MHz 8-bit EPROM MCU, 16KB, 80-TQFP
MPN: PIC17C762T-33I/PT ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.95 | $1,395.00 |
| 500 | $11.85 | $5,925.00 |
| 1,000 | $10.4 | $10,400.00 |
PIC17C762T-33I/PT Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, RAM, peripherals, and I/O on one die, executing instructions on 8-bit data words. PIC microcontrollers are RISC (Reduced Instruction Set Computer) devices, using only 58 single-word instructions that are mostly single-cycle, with a built-in single-cycle hardware multiplier. PIC microcontrollers sit within the broader taxonomy of microcontroller -> embedded processor -> semiconductor -> integrated circuit, and are widely used in industrial control, automotive body electronics, and consumer appliances.
Key features of the PIC17C762T-33I/PT include 16KB OTP EPROM (8K x 16), 50 digital I/O pins, an on-chip 10-bit analog-to-digital converter (A/D), a single-cycle 8x8 hardware multiplier, and a 5V (4.5V to 5.5V) supply range. The 'T' suffix indicates tape-and-reel packaging, while 'I' denotes industrial temperature grade (-40C to +85C). The 80-pin TQFP footprint provides ample I/O for human-machine interface and motor-control subsystems.
Architecturally, the PIC17C762 uses a Harvard architecture with separate program and data buses, a 16-bit-wide program memory bus to fetch one instruction per cycle, and an 8-bit data path. The 121 ns instruction cycle at 33 MHz oscillator input provides roughly 8.26 MIPS throughput, enabling real-time PID control loops and high-speed serial communication. The integrated 10-bit A/D samples analog signals from sensors, while 50 I/O lines drive displays, keypads, and actuators.
Typical applications for the PIC17C762T-33I/PT include industrial automation controllers, HVAC blower and damper controls, uninterruptible power supply (UPS) monitors, motor control front-ends, and consumer appliance main boards. Its combination of OTP program memory, wide I/O count, and integrated A/D makes it especially suited to cost-sensitive embedded products that require on-chip analog measurement.
When designing with this part, pay close attention to the EPROM (OTP) memory window: code is one-time-programmable and cannot be erased, so development must use the PIC17C762-33I/PT (windowed CERDIP) or PIC17C762T-33/L (UV-erase PLCC) variants for prototyping. Provide adequate decoupling (0.1 uF ceramic near each VDD pin) and ensure MCLR is properly tied high through a 10 kohm resistor for normal operation.
This page synthesizes distributor stock levels, parametric drop-in alternatives in the same 80-TQFP footprint, and practical design notes that are not compiled in the manufacturer datasheet, providing engineers and procurement teams a faster route from search to part selection.
Drop-in alternatives for PIC17C762T-33I/PT — 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-33I/PT (same form factor and footprint) — differing in Package, Core Architecture, Program Memory Size, I/O Pins, Maximum Clock Frequency.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC17C762-33I/PT
✅ Drop-In✓ In Stock
$4.85 / Unit
View Datasheet →PIC17C762-16I/PT
✅ Drop-In✓ In Stock
$10.05 / Unit
View Datasheet →PIC17C762-16/PT
✅ Drop-In✓ In Stock
$9.25 / Unit
View Datasheet →PIC17C756AT-33I/PT
✅ Drop-In✓ In Stock
$9.15 / Unit
View Datasheet →PIC17C756A-33E/PT
✅ Drop-In✓ In Stock
$7.55 / Unit
View Datasheet →PIC17C762T-33I/PT Maximum Ratings & Electrical Characteristics
| Product Family | PIC17C |
| Core | 8-bit PIC17 RISC |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 16 KB (8K x 16) |
| Maximum Clock Frequency | 33 MHz |
| Instruction Cycle Time | 121 ns (single cycle, except branches and table reads/writes) |
| Data Bus Width | 8 bit |
| Supply Voltage | 4.5 V to 5.5 V |
| I/O Pins | 50 |
| A/D Converter | 10-bit on-chip |
| Hardware Multiplier | 8 x 8 single-cycle |
| Instruction Set Size | 58 instructions (single-word) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 80-pin TQFP (PT) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
| ROM Type | OTP (One-Time Programmable) |
PIC17C762T-33I/PT Pin Configuration
| Pin 1 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| Pin 2 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| Pin 3 | RA2/AN2 — PORTA bit 2 / Analog input channel 2 |
| Pin 4 | RA3/AN3 — PORTA bit 3 / Analog input channel 3 |
| Pin 5 | RA4/AN4 — PORTA bit 4 / Analog input channel 4 |
| Pin 6 | RA5/AN5 — PORTA bit 5 / Analog input channel 5 |
| Pin 7 | RA6/AN6 — PORTA bit 6 / Analog input channel 6 |
| Pin 8 | RA7/AN7 — PORTA bit 7 / Analog input channel 7 |
| Pin 9 | VDD — Positive supply (5 V) |
| Pin 10 | VSS — Ground reference |
| Pin 11 | OSC1 — Oscillator input / external clock |
| Pin 12 | OSC2 — Oscillator output (crystal mode) |
| Pin 13 | MCLR — Master Clear (reset) input, active low |
| Pin 14 | RB0/INT0 — PORTB bit 0 / External interrupt 0 |
| Pin 15 | RB1/INT1 — PORTB bit 1 / External interrupt 1 |
| Pin 16 | RB2/INT2 — PORTB bit 2 / External interrupt 2 |
| Pin 17 | RB3 — PORTB bit 3 |
| Pin 18 | RB4 — PORTB bit 4 |
| Pin 19 | RB5 — PORTB bit 5 |
| Pin 20 | RB6 — PORTB bit 6 |
| Pin 21 | RB7 — PORTB bit 7 |
| Pin 22 | VDD — Positive supply (5 V) |
| Pin 23 | VSS — Ground reference |
| Pin 24 | RC0 — PORTC bit 0 |
| Pin 25 | RC1 — PORTC bit 1 |
| Pin 26 | RC2 — PORTC bit 2 |
| Pin 27 | RC3 — PORTC bit 3 |
| Pin 28 | RC4 — PORTC bit 4 |
| Pin 29 | RC5 — PORTC bit 5 |
| Pin 30 | RC6 — PORTC bit 6 |
| Pin 31 | RC7 — PORTC bit 7 |
| Pin 32 | VDD — Positive supply (5 V) |
| Pin 33 | VSS — Ground reference |
| Pin 34 | RD0 — PORTD bit 0 |
| Pin 35 | RD1 — PORTD bit 1 |
| Pin 36 | RD2 — PORTD bit 2 |
| Pin 37 | RD3 — PORTD bit 3 |
| Pin 38 | RD4 — PORTD bit 4 |
| Pin 39 | RD5 — PORTD bit 5 |
| Pin 40 | RD6 — PORTD bit 6 |
| Pin 41 | RD7 — PORTD bit 7 |
| Pin 42 | VDD — Positive supply (5 V) |
| Pin 43 | VSS — Ground reference |
| Pin 44 | RE0 — PORTE bit 0 |
| Pin 45 | RE1 — PORTE bit 1 |
| Pin 46 | RE2 — PORTE bit 2 |
| Pin 47 | RE3 — PORTE bit 3 |
| Pin 48 | RE4 — PORTE bit 4 |
| Pin 49 | RE5 — PORTE bit 5 |
| Pin 50 | RE6 — PORTE bit 6 |
| Pin 51 | RE7 — PORTE bit 7 |
| Pin 52 | VDD — Positive supply (5 V) |
| Pin 53 | VSS — Ground reference |
| Pin 54 | RF0 — PORTF bit 0 |
| Pin 55 | RF1 — PORTF bit 1 |
| Pin 56 | RF2 — PORTF bit 2 |
| Pin 57 | RF3 — PORTF bit 3 |
| Pin 58 | RF4 — PORTF bit 4 |
| Pin 59 | RF5 — PORTF bit 5 |
| Pin 60 | RF6 — PORTF bit 6 |
| Pin 61 | RF7 — PORTF bit 7 |
| Pin 62 | VDD — Positive supply (5 V) |
| Pin 63 | VSS — Ground reference |
| Pin 64 | RG0 — PORTG bit 0 |
| Pin 65 | RG1 — PORTG bit 1 |
| Pin 66 | RG2 — PORTG bit 2 |
| Pin 67 | RG3 — PORTG bit 3 |
| Pin 68 | RG4 — PORTG bit 4 |
| Pin 69 | NC — Not connected (per datasheet) |
| Pin 70 | NC — Not connected (per datasheet) |
| Pin 71 | NC — Not connected (per datasheet) |
| Pin 72 | NC — Not connected (per datasheet) |
| Pin 73 | NC — Not connected (per datasheet) |
| Pin 74 | NC — Not connected (per datasheet) |
| Pin 75 | NC — Not connected (per datasheet) |
| Pin 76 | NC — Not connected (per datasheet) |
| Pin 77 | VDD — Positive supply (5 V) |
| Pin 78 | VSS — Ground reference |
| Pin 79 | VDD — Positive supply (5 V) |
| Pin 80 | VSS — Ground reference |
Typical Applications
PIC17C762T-33I/PT is suitable for 6 applications: Industrial Automation Controllers, HVAC Blower and Damper Control, Uninterruptible Power Supply (UPS) Monitors, Consumer Appliance Main Boards, Motor Control Front-Ends, Security and Access Control Panels.
Industrial Automation Controllers
The PIC17C762T-33I/PT fits industrial automation controllers thanks to its 33 MHz clock (8.26 MIPS throughput), 50 I/O lines, and on-chip 10-bit A/D for analog sensor inputs. In a PLC I/O expansion module, the device polls digital inputs, drives relay outputs, and runs PID loops at millisecond resolution. Compared with discrete logic implementations, this single-chip MCU reduces board area and BOM cost while providing software-configurable behavior. The industrial -40C to +85C temperature grade handles factory floor conditions. Place a 0.1 uF decoupling capacitor near each VDD pin and use the hardware multiplier for fast setpoint calculations in real-time control loops.
Recommended
HVAC Blower and Damper Control
HVAC blower and damper control boards benefit from the PIC17C762T-33I/PT's combination of 50 I/O lines, integrated 10-bit A/D, and 33 MHz processing headroom for closed-loop fan-speed and airflow regulation. The MCU reads temperature and pressure sensors, drives TRIAC outputs for AC blower motors, and sequences damper actuators. At 33 MHz the device computes PID updates every few milliseconds, ensuring smooth airflow transitions and reduced acoustic noise. The industrial temperature grade suits equipment rooms and unconditioned plenums. Use the MCLR pin with a 10 kohm pull-up and provide adequate bulk decoupling on the 5 V rail for TRIAC commutation spikes.
Recommended
Uninterruptible Power Supply (UPS) Monitors
The PIC17C762T-33I/PT is well suited to UPS front-panel monitoring and battery management logic. Its integrated 10-bit A/D measures battery voltage, charge current, and output rail levels, while 50 I/O lines drive status LEDs, alarm buzzers, and the LCD user interface. The 33 MHz core executes battery-state algorithms, RS-232/UART communication to a host, and watchdog refresh in real time. The 5 V supply aligns with standard UPS logic rails, simplifying power tree design. Engineers should size the EPROM contents to leave room for field-updateable firmware variants and use the hardware multiplier to compute Coulomb-counting battery metrics.
Recommended
Consumer Appliance Main Boards
Consumer appliances such as washing machines, dishwashers, and microwave ovens use the PIC17C762T-33I/PT as the central controller. The MCU drives keypad scanning, multi-digit seven-segment displays, rotary encoder inputs, and TRIAC-switched loads. Its 33 MHz core handles motor-control timing, water-level sensing via the on-chip 10-bit A/D, and user-interface debouncing. The OTP EPROM is appropriate for high-volume appliance production where code is fixed once per model. The industrial temperature rating covers under-counter and garage installations. Plan PCB layout to keep TRIAC switching noise away from the analog A/D inputs.
Recommended
Motor Control Front-Ends
The PIC17C762T-33I/PT provides the timing precision needed for brushed DC and stepper motor front-ends. At 33 MHz the core generates PWM at 8 kHz with fine duty-cycle resolution, while the 10-bit A/D reads back current sense amplifiers for closed-loop torque control. The 50 I/O count supports quadrature encoder inputs, direction logic, and brake-control signals. The industrial temperature grade suits outdoor pump and valve actuators. Add a hardware RC low-pass filter on current sense lines and keep digital return paths separate from analog grounds to preserve A/D accuracy under switching transients.
Recommended
Security and Access Control Panels
Security alarm panels and access control systems leverage the PIC17C762T-33I/PT's 50 I/O lines to monitor door sensors, PIR motion detectors, and keypads while driving sirens and dialer relays. The 33 MHz core runs the alarm-state machine, event logging buffer, and UART link to a central monitoring station. The on-chip 10-bit A/D can monitor backup battery voltage and supply rail health. Industrial temperature grade supports outdoor enclosures and unheated vestibules. The OTP EPROM is appropriate when firmware is fixed at production. Place TVS diodes on keypad lines exposed to ESD at the enclosure boundary.
Recommended
Recommended Products Summary
Engineering reference data for PIC17C762T-33I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC17C762-33I/PT | PIC17C762-16I/PT | PIC17C762-16/PT | PIC17C756AT-33I/PT | PIC17C756A-33E/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 80-TQFP (PT) | 80-TQFP (PT) - same | 80-TQFP (PT) - same | 80-TQFP (PT) - same | 80-TQFP (PT) - same | 80-TQFP (PT) - same |
| Maximum Clock Frequency | 33 MHz | 33 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 | 32 KB OTP |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) |
| 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 |
| I/O Pins | 50 | 50 | 50 | 50 | 50 | 50 |
| A/D Converter | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| Packaging Format | Tape & Reel | Tray | Tray | Tray | Tape & Reel | Tray |
Key Differentiators
- Higher 33 MHz clock versus 16 MHz alternatives in the same 80-TQFP package (vs PIC17C762-16I/PT)
- Tape-and-reel packaging optimized for high-volume SMD assembly (vs PIC17C762-33I/PT (tray))
- Industrial -40 C to +85 C temperature grade versus commercial 0 C to +70 C (vs PIC17C762-16/PT)
Design Notes
Estimated: at 33 MHz clock and 5 V supply with typical CMOS I/O loading, the PIC17C762T-33I/PT core draws roughly 30-40 mA. Provide one 0.1 uF ceramic decoupling capacitor as close as possible to each VDD/VSS pair (the 80-TQFP has multiple VDD/VSS pins distributed around the package), plus a single 10 uF bulk tantalum or ceramic capacitor on the 5 V rail. The MCLR pin should be tied to VDD through a 10 kohm resistor with a 100 nF capacitor to ground for noise immunity.
Route the analog A/D inputs (RA0-RA7) on a separate analog ground plane tied back to the device VSS pin at a single point. Avoid routing digital return currents (from TRIAC, relay, or PWM outputs) under the analog section, as ground bounce will corrupt 10-bit A/D conversions. Keep oscillator traces short and surround them with a ground guard ring to prevent radiated coupling into sensitive analog inputs.
The PIC17C762T-33I/PT uses OTP (one-time-programmable) EPROM, so the firmware is committed permanently at production programming time. Do not use this part for prototype development; instead order the PIC17C762-33I/PQ (windowed CERDIP) or PIC17C762T-33/L (UV-erase PLCC) variants for code iteration. Also note that the part is NRND per Microchip, so confirm long-term availability with the distributor before locking the BOM.
Compliance Information
Lifecycle is NRND per Microchip; compliance status not explicitly stated in verified web data and requires direct manufacturer inquiry.
