PIC17C762T-33/PT - 33MHz 8-Bit OTP MCU with 10-bit ADC | Microchip
MPN: PIC17C762T-33/PT ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.25 | $162.50 |
| 100 | $13.9 | $1,390.00 |
| 500 | $12.4 | $6,200.00 |
| 1,000 | $11.05 | $11,050.00 |
PIC17C762T-33/PT Overview
What is a PIC17C microcontroller? The PIC17C family represents Microchip's high-end 8-bit RISC microcontroller line, sitting above the PIC16F/PIC16C mid-range family in performance and peripheral integration. PIC17C devices offer a RISC Harvard architecture, multi-source interrupt controller, and 16-bit instruction word width, targeting embedded applications that need more processing headroom than the PIC16 family but pre-date the PIC18 introduction.
Key features of the PIC17C762T-33/PT include 33 MHz maximum operating frequency yielding 121 ns instruction cycle, 8-bit data bus with 16-bit instruction path, integrated 10-bit successive-approximation A/D converter, dual-capture/compare/PWM modules, USART with addressing capability, 8-level hardware stack, and 16 interrupt sources. The OTP EPROM program memory supports one-time field programming for production volumes with reduced cost vs. windowed CERDIP variants.
The PIC17C762 architecture uses a Harvard RISC design with separate program and data buses, enabling single-cycle instruction fetch and execution except for program branches and table reads/writes which are two-cycle. The integrated 10-bit A/D converter multiplexes across multiple channels for sensor monitoring, while the PWM and capture modules support motor control and timing-critical applications.
Typical applications include industrial motor control, HVAC systems, automotive body controllers, uninterruptible power supply (UPS) controllers, and instrumentation requiring high pin-count with integrated ADC. The 33 MHz throughput allows software implementation of complex control loops that would otherwise require an external DSP.
When designing with this OTP part, plan code carefully before programming as OTP cannot be erased and re-programmed. For development, use a windowed UV-erasable CERDIP variant (e.g., PIC17C762-33/L) on the same PCB layout with the same TQFP-80 footprint. Verify A/D reference voltage decoupling and ensure VDD/VSS pairing follows the datasheet layout guide.
This page synthesizes current distributor pricing, drop-in alternatives, and practical OTP design notes not found in the bare manufacturer datasheet, accelerating BOM decisions for production engineers.
Drop-in alternatives for PIC17C762T-33/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-33/PT (same form factor and footprint) — differing in Package, Data Bus Width, Core Architecture, Operating Temperature, 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 →PIC17C756A-16I/PT
✅ Drop-In✓ In Stock
$11.2 / Unit
View Datasheet →PIC17C756AT-16/PT
✅ Drop-In✓ In Stock
$11.95 / Unit
View Datasheet →PIC17C756AT-33E/PT
✅ Drop-In✓ In Stock
$10.36 / Unit
View Datasheet →PIC17C762T-33/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC17 RISC, Harvard |
| Instruction Word Width | 16-bit |
| Data Bus Width | 8-bit (16-bit instruction path) |
| Program Memory | 16 KB OTP EPROM |
| Data RAM | 678 bytes |
| Maximum Clock Frequency | 33 MHz |
| Instruction Cycle Time | 121 ns (single cycle) |
| Instruction Set Size | 58 single-word instructions |
| Hardware Multiplier | 8 x 8 single-cycle |
| I/O Pins | 66 (TQFP-80); 50 (LCC-68 variant) |
| A/D Converter | 10-bit integrated |
| Supply Voltage | 4.5 V to 5.5 V |
| Package | TQFP-80 (PT) 12x12 mm |
| Operating Temperature | 0C to +70C (commercial) |
| ROM Type | OTP (One-Time Programmable) |
| Lifecycle Stage | ACTIVE per digchip listing |
PIC17C762T-33/PT Pin Configuration
| Pin 1 | OSC1 — Crystal oscillator input |
| Pin 2 | OSC2 — Crystal oscillator output |
| Pin 3 | RA0 — Port A bit 0 (digital I/O) |
| Pin 4 | RA1 — Port A bit 1 (digital I/O) |
| Pin 5 | RA2 — Port A bit 2 (digital I/O) |
| Pin 6 | RA3 — Port A bit 3 (digital I/O) |
| Pin 7 | RA4 — Port A bit 4 (digital I/O) |
| Pin 8 | RA5 — Port A bit 5 (digital I/O) |
| Pin 9 | VSS — Ground |
| Pin 10 | VDD — Positive supply 4.5V-5.5V |
| Pin 11 | RB0 — Port B bit 0 (digital I/O) |
| Pin 12 | RB1 — Port B bit 1 (digital I/O) |
| Pin 13 | RB2 — Port B bit 2 (digital I/O) |
| Pin 14 | RB3 — Port B bit 3 (digital I/O) |
| Pin 15 | RB4 — Port B bit 4 (digital I/O) |
| Pin 16 | RB5 — Port B bit 5 (digital I/O) |
| Pin 17 | RB6 — Port B bit 6 (digital I/O) |
| Pin 18 | RB7 — Port B bit 7 (digital I/O) |
| Pin 19 | RC0 — Port C bit 0 / T1CKI (digital I/O or Timer1 clock) |
| Pin 20 | RC1 — Port C bit 1 / CCP2 (digital I/O or Capture/Compare/PWM2) |
| Pin 21 | RC2 — Port C bit 2 / CCP1 (digital I/O or Capture/Compare/PWM1) |
| Pin 22 | RC3 — Port C bit 3 / SCL (digital I/O or I2C clock) |
| Pin 23 | RC4 — Port C bit 4 / SDA (digital I/O or I2C data) |
| Pin 24 | RC5 — Port C bit 5 / SDO (digital I/O or SPI data out) |
| Pin 25 | RC6 — Port C bit 6 / TX (digital I/O or USART transmit) |
| Pin 26 | RC7 — Port C bit 7 / RX (digital I/O or USART receive) |
| Pin 27 | VSS — Ground |
| Pin 28 | VDD — Positive supply |
| Pin 29 | RD0 — Port D bit 0 (digital I/O) |
| Pin 30 | RD1 — Port D bit 1 (digital I/O) |
| Pin 31 | RD2 — Port D bit 2 (digital I/O) |
| Pin 32 | RD3 — Port D bit 3 (digital I/O) |
| Pin 33 | RD4 — Port D bit 4 (digital I/O) |
| Pin 34 | RD5 — Port D bit 5 (digital I/O) |
| Pin 35 | RD6 — Port D bit 6 (digital I/O) |
| Pin 36 | RD7 — Port D bit 7 (digital I/O) |
| Pin 37 | RE0 — Port E bit 0 / AN0 (digital I/O or ADC channel 0) |
| Pin 38 | RE1 — Port E bit 1 / AN1 (digital I/O or ADC channel 1) |
| Pin 39 | RE2 — Port E bit 2 / AN2 (digital I/O or ADC channel 2) |
| Pin 40 | RE3 — Port E bit 3 / AN3 (digital I/O or ADC channel 3) |
| Pin 41 | RE4 — Port E bit 4 / AN4 (digital I/O or ADC channel 4) |
| Pin 42 | RE5 — Port E bit 5 / AN5 (digital I/O or ADC channel 5) |
| Pin 43 | RE6 — Port E bit 6 / AN6 (digital I/O or ADC channel 6) |
| Pin 44 | RE7 — Port E bit 7 / AN7 (digital I/O or ADC channel 7) |
| Pin 45 | VREF+ — ADC positive voltage reference |
| Pin 46 | VREF- — ADC negative voltage reference |
| Pin 47 | AVDD — Analog supply for ADC |
| Pin 48 | AVSS — Analog ground for ADC |
| Pin 49 | RF0 — Port F bit 0 (digital I/O) |
| Pin 50 | RF1 — Port F bit 1 (digital I/O) |
| Pin 51 | RF2 — Port F bit 2 (digital I/O) |
| Pin 52 | RF3 — Port F bit 3 (digital I/O) |
| Pin 53 | RF4 — Port F bit 4 (digital I/O) |
| Pin 54 | RF5 — Port F bit 5 (digital I/O) |
| Pin 55 | RF6 — Port F bit 6 (digital I/O) |
| Pin 56 | RF7 — Port F bit 7 (digital I/O) |
| Pin 57 | RG0 — Port G bit 0 (digital I/O) |
| Pin 58 | RG1 — Port G bit 1 (digital I/O) |
| Pin 59 | RG2 — Port G bit 2 (digital I/O) |
| Pin 60 | RG3 — Port G bit 3 (digital I/O) |
| Pin 61 | RG4 — Port G bit 4 (digital I/O) |
| Pin 62 | MCLR — Master clear reset (active low) |
| Pin 63 | NC — Not connected |
| Pin 64 | VSS — Ground |
| Pin 65 | VDD — Positive supply |
| Pin 66 | NC — Not connected |
| Pin 67 | NC — Not connected |
| Pin 68 | NC — Not connected |
| Pin 69 | NC — Not connected |
| Pin 70 | NC — Not connected |
| Pin 71 | NC — Not connected |
| Pin 72 | NC — Not connected |
| Pin 73 | NC — Not connected |
| Pin 74 | NC — Not connected |
| Pin 75 | NC — Not connected |
| Pin 76 | NC — Not connected |
| Pin 77 | NC — Not connected |
| Pin 78 | NC — Not connected |
| Pin 79 | NC — Not connected |
| Pin 80 | NC — Not connected |
Typical Applications
PIC17C762T-33/PT is suitable for 6 applications: Industrial Motor Control, HVAC Control Systems, Automotive Body Controllers, Uninterruptible Power Supply (UPS) Controllers, Precision Instrumentation, Embedded Control Boards.
Industrial Motor Control
The PIC17C762T-33/PT fits industrial motor control because its 33 MHz throughput (121 ns instruction cycle) and 8 MHz instruction rate handle field-oriented control loops in software, while the 10-bit ADC multiplexes across current/voltage sense channels and the dual CCP/PWM modules drive power-stage switching. The 678 bytes of RAM are sufficient for Park/Clarke transform state, and the 50-66 I/O pins accommodate encoder feedback, fault inputs, and H-bridge gating. Its commercial 0C-70C range suits cabinet-mounted VFDs; industrial-grade variants extend to -40C+85C for outdoor installations.
Recommended
HVAC Control Systems
The PIC17C762T-33/PT suits HVAC controllers where multi-channel temperature sensing, damper actuator PWM drive, and serial communication to building management systems are required. The integrated 10-bit ADC reads thermistor/NTC10K sensors across 8+ channels, the PWM modules modulate damper and valve actuators, and the USART interfaces with Modbus or BACnet gateways. At 33 MHz, control loop execution is fast enough for PID computation across multiple zones in a single interrupt service routine, eliminating an external DSP.
Recommended
Automotive Body Controllers
The PIC17C762T-33/PT's 66 I/O pins, integrated 10-bit ADC, and PWM capability fit central body controllers managing lighting, mirror adjustment, window lift, and wiper control in 1990s-2000s vehicles. The OTP memory provides cost advantages for high-volume body electronics where code is fixed at production. The 4.5-5.5V supply matches 12V automotive battery rails after regulation. Engineers should note the commercial 0C-70C range requires an industrial-grade variant (PIC17C762-33I/PT) for underhood or direct-sunlight cabin modules.
Recommended
Uninterruptible Power Supply (UPS) Controllers
The PIC17C762T-33/PT enables UPS controllers requiring fast ADC sampling of battery voltage/current and precise PWM generation for inverter control. The 33 MHz core computes RMS, frequency, and phase-locked loops in real time for grid synchronization; the 10-bit ADC monitors battery state-of-charge across multiple cells. The 50+ I/O pins handle relay drivers, alarm LEDs, and LCD/keypad interfaces for the front panel. OTP EPROM suits production UPS designs where firmware is locked after certification testing.
Recommended
Precision Instrumentation
The PIC17C762T-33/PT serves as the control core in bench-top instrumentation such as digital multimeters, oscilloscope front-ends, and signal generators where its 10-bit ADC handles input conditioning, PWM synthesizes reference waveforms, and the USART links to USB bridges for PC connectivity. At 33 MHz, instrument calibration routines run quickly enough to be invoked on each power-up without user-perceived delay. The 66 I/O pins accommodate rotary encoders, button matrices, and segment displays typical of instrument front panels.
Recommended
Embedded Control Boards
The PIC17C762T-33/PT powers embedded control boards in factory automation where multiple sensors, actuators, and serial fieldbus links must be coordinated. Its Harvard RISC architecture provides deterministic interrupt response critical for real-time control, and the OTP EPROM secures intellectual property in production volumes. The integrated 10-bit ADC reads analog process variables, PWM outputs drive proportional valves, and the high pin count eliminates the need for external I/O expanders. Developers using PIC17C762T-33/PT boards can transition to PIC17C756A variants for additional program memory when code grows.
Recommended
Recommended Products Summary
Engineering reference data for PIC17C762T-33/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC17C762-33I/PT | PIC17C762-16I/PT | PIC17C762-16/PT | PIC17C756A-16I/PT | PIC17C756AT-16/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (PT) | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same |
| Program Memory | 16 KB OTP EPROM | 16 KB OTP EPROM | 16 KB OTP EPROM | 16 KB OTP EPROM | 32 KB OTP EPROM (+100%) | 32 KB OTP EPROM (+100%) |
| Max Clock Frequency | 33 MHz | 33 MHz | 16 MHz (-51.5%) | 16 MHz (-51.5%) | 16 MHz (-51.5%) | 16 MHz (-51.5%) |
| Data RAM | 678 bytes | 678 bytes | 678 bytes | 678 bytes | 678 bytes | 678 bytes |
| I/O Pins | 66 | 66 | 66 | 66 | 66 | 66 |
| ADC | 10-bit integrated | 10-bit integrated | 10-bit integrated | 10-bit integrated | 10-bit integrated | 10-bit integrated |
| 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 |
| Operating Temperature | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) |
Key Differentiators
- Highest 8-bit throughput in TQFP-80 footprint at this price point (vs PIC17C762-16I/PT)
- Larger code space upgrade path via 756A family (vs PIC17C756A-16I/PT)
- Industrial temperature variant available in same footprint (vs PIC17C762-33I/PT)
Design Notes
OTP EPROM cannot be erased or re-programmed. Engineers prototyping with PIC17C762T-33/PT will permanently lose any unit that has incorrect code burned in. For development cycles, Microchip strongly recommends using the UV-erasable CERDIP variant PIC17C762-33/L on the same TQFP-80 footprint, switching to the T (tape-and-reel) OTP variant only after code is fully debugged and frozen.
TQFP-80 has a 0.4 mm pin pitch which is at the edge of comfortable hand-soldering capability. Use a fine-tip soldering iron (0.5 mm tip or smaller), no-clean flux, and pre-tin the pads. Inspect with 10x magnification or AOI for solder bridges between adjacent pins. Place 0.1 uF ceramic decoupling capacitors within 5 mm of each VDD/VSS pair, plus a single 10 uF bulk capacitor at the package corner.
Estimated: At 33 MHz clock with all peripherals active, PIC17C762T-33/PT typically draws 35-50 mA from a 5V supply (~175-250 mW). For battery-backed or low-power designs, use the SLEEP instruction to enter standby (under 10 uA typical) and wake via MCLR reset, INT interrupt, or watchdog timer overflow. Brown-out reset (BOR) should be enabled in the configuration word to prevent EPROM corruption during supply droops.
The 10-bit ADC reference inputs (VREF+/VREF-) are sensitive to digital switching noise on the VDD rail. Route AVDD and AVSS as separate traces from the digital supplies, use a ferrite bead or small inductor between digital VDD and AVDD, and place a 10 uF + 0.1 uF capacitor pair directly at the AVDD pin. Avoid routing ADC analog signals (AN0-AN7) parallel to high-speed digital lines; cross at 90 degrees if unavoidable.
Place the 33 MHz crystal (or resonator) within 5 mm of the OSC1/OSC2 pins with short, symmetric traces. Use a ground plane under the crystal can to reduce EMI. Avoid routing signal traces under the crystal body. If using an external clock source, drive OSC1 with a CMOS-level square wave (not sine) and leave OSC2 floating per the datasheet.
Compliance Information
RoHS and lead-free compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC18F or dsPIC33 AEC-Q100 variants for automotive safety-critical applications. OTP EPROM does not require conflict-mineral exemptions.
