PIC17C752-33/PT - 8-bit 33MHz 16KB OTP MCU 64-TQFP | Microchip
MPN: PIC17C752-33/PT ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $15.52 | $15.52 |
| 10 | $14.5 | $145.00 |
| 100 | $12.85 | $1,285.00 |
| 500 | $11.4 | $5,700.00 |
| 1,000 | $10.1 | $10,100.00 |
PIC17C752-33/PT Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, on-chip program memory, on-chip RAM, and a set of peripherals such as timers, communication ports, and ADCs. Microcontrollers sit within the broader hierarchy of microprocessors -> microcontrollers -> 8-bit microcontrollers -> PIC architecture, serving as the lowest-level programmable element that reads sensors, drives actuators, and orchestrates real-time control loops without requiring an external operating system. PIC devices are RISC-based, Harvard-architecture MCUs well known for deterministic single-cycle instruction execution and a small, easy-to-learn instruction set.
Key features of the PIC17C752-33/PT include 8.25 MIPS peak throughput, a single-cycle 8x8 hardware multiplier, dual-capture/compare/PWM modules, a USART, an MSSP (SPI/I2C) peripheral, 12 channels of 10-bit ADC, and an 8-level deep hardware stack. The 17C-series instruction set extends the baseline PIC16C5X/PIC12CXXX/PIC16CXX instruction set with additional addressing modes and a hardware multiplier, while remaining upwards source-compatible so existing code can be re-targeted with minimal porting.
Architecturally, the PIC17C752 uses a 16-bit-wide instruction word fetched from OTP EPROM each cycle, an 8-bit data bus to RAM, and a 10-bit ADC front end. The 33 MHz oscillator combined with the 4:1 internal clock divider produces the 121 ns instruction cycle quoted in the datasheet, giving roughly 8 MIPS sustained throughput with deterministic interrupt latency ideal for motor control and instrumentation.
Typical applications include industrial control panels, motor drive front-ends, instrumentation front-ends with on-chip ADC, smart sensor hubs, and embedded control boards where OTP programmability is acceptable for low- to mid-volume production. The wide I/O count (50 pins) and on-chip ADC also make it suitable for HVAC controllers and appliance subsystems.
When designing with this part, ensure the oscillator loop is laid out per Microchip's recommended guidelines to avoid noise coupling into the analog AVdd/AVss pins, and provide adequate bulk decoupling near the IC. Note that the PIC17C752 family has been superseded by the PIC18F family; for new designs the manufacturer recommends migrating to PIC18F6520.
This page consolidates current distributor pricing for the PIC17C752-33/PT, drop-in OTP and Flash alternatives in the same TQFP-64 footprint, application guidance, and pin-level design notes that go beyond the bare datasheet specification list.
Drop-in alternatives for PIC17C752-33/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 PIC17C752-33/PT (same form factor and footprint) — differing in Package, Data Bus Width, Program Memory Type, Operating Temperature, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC17C752-33I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC17C752-16/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC17C756A-33/PT
✅ Drop-In✓ In Stock
$4.35 / Unit
View Datasheet →PIC17C752-33/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Instruction Set Width | 16-bit (8-bit data bus) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 16 KB (8K x 16 words) |
| RAM | 678 bytes |
| Maximum Clock Frequency | 33 MHz |
| Instruction Cycle Time | 121 ns (single cycle) |
| Throughput | 8.25 MIPS |
| Operating Supply Voltage | 4.5 V to 5.5 V |
| I/O Pins | 50 |
| ADC | 10-bit, 12 channels |
| Hardware Multiplier | 8 x 8 single-cycle |
| Stack Depth | 8 levels (hardware) |
| Package | 64-pin TQFP (10 x 10 mm) |
| Operating Temperature | 0 C to +70 C (commercial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Number of Instructions | 58 single-word |
| Peripherals | USART, MSSP (SPI/I2C), CCP, 10-bit ADC |
| Lead-Free / Pb-Free | Yes |
PIC17C752-33/PT Pin Configuration
| Pin 1 | OSC1 — Oscillator input / external clock |
| Pin 2 | OSC2 — Oscillator output |
| Pin 3 | MCLR — Master clear (reset) input |
| Pin 4 | RA0/AN0 — Digital I/O / analog input channel 0 |
| Pin 5 | RA1/AN1 — Digital I/O / analog input channel 1 |
| Pin 6 | RA2/AN2 — Digital I/O / analog input channel 2 |
| Pin 7 | RA3/AN3 — Digital I/O / analog input channel 3 |
| Pin 8 | RA4/AN4 — Digital I/O / analog input channel 4 |
| Pin 9 | RA5/AN5 — Digital I/O / analog input channel 5 |
| Pin 10 | RA6 — Digital I/O |
| Pin 11 | RA7 — Digital I/O |
| Pin 12 | Vss — Digital ground |
| Pin 13 | RB0/INT — Digital I/O / external interrupt |
| Pin 14 | RB1 — Digital I/O |
| Pin 15 | RB2 — Digital I/O |
| Pin 16 | RB3 — Digital I/O |
| Pin 17 | RB4 — Digital I/O |
| Pin 18 | RB5 — Digital I/O |
| Pin 19 | RB6 — Digital I/O |
| Pin 20 | RB7 — Digital I/O |
| Pin 21 | Vdd — Digital supply (4.5V to 5.5V) |
| Pin 22 | RC0 — Digital I/O |
| Pin 23 | RC1 — Digital I/O |
| Pin 24 | RC2 — Digital I/O |
| Pin 25 | RC3 — Digital I/O |
| Pin 26 | RC4 — Digital I/O |
| Pin 27 | RC5 — Digital I/O |
| Pin 28 | RC6 — Digital I/O |
| Pin 29 | RC7 — Digital I/O |
| Pin 30 | Vss — Digital ground |
| Pin 31 | RD0 — Digital I/O |
| Pin 32 | RD1 — Digital I/O |
| Pin 33 | RD2 — Digital I/O |
| Pin 34 | RD3 — Digital I/O |
| Pin 35 | RD4 — Digital I/O |
| Pin 36 | RD5 — Digital I/O |
| Pin 37 | RD6 — Digital I/O |
| Pin 38 | RD7 — Digital I/O |
| Pin 39 | Vdd — Digital supply |
| Pin 40 | RE0 — Digital I/O |
| Pin 41 | RE1 — Digital I/O |
| Pin 42 | RE2 — Digital I/O |
| Pin 43 | RE3 — Digital I/O |
| Pin 44 | RE4 — Digital I/O |
| Pin 45 | RE5 — Digital I/O |
| Pin 46 | RE6 — Digital I/O |
| Pin 47 | RE7 — Digital I/O |
| Pin 48 | Vss — Digital ground |
| Pin 49 | RF0/AN6 — Digital I/O / analog input channel 6 |
| Pin 50 | RF1/AN7 — Digital I/O / analog input channel 7 |
| Pin 51 | RF2/AN8 — Digital I/O / analog input channel 8 |
| Pin 52 | RF3/AN9 — Digital I/O / analog input channel 9 |
| Pin 53 | RF4/AN10 — Digital I/O / analog input channel 10 |
| Pin 54 | RF5/AN11 — Digital I/O / analog input channel 11 |
| Pin 55 | RF6 — Digital I/O |
| Pin 56 | RF7 — Digital I/O |
| Pin 57 | AVdd — Analog supply |
| Pin 58 | AVss — Analog ground |
| Pin 59 | RG0 — Digital I/O |
| Pin 60 | RG1 — Digital I/O |
| Pin 61 | RG2 — Digital I/O |
| Pin 62 | RG3 — Digital I/O |
| Pin 63 | NC — Not connected (per datasheet) |
| Pin 64 | NC — Not connected (per datasheet) |
Typical Applications
PIC17C752-33/PT is suitable for 6 applications: Industrial Control Panels, BLDC / Stepper Motor Drive, Smart Sensor Hubs, HVAC and Appliance Controllers, Instrumentation Front-Ends, Embedded Control Boards (Legacy / MRO).
Industrial Control Panels
The PIC17C752-33/PT fits industrial control panels because its 50 I/O pins can directly drive LED indicators, keypads, and relay coils, while its 12-channel 10-bit ADC reads analog sensors such as temperature, pressure, and current. The 8.25 MIPS throughput comfortably executes scan loops that poll multiple inputs every few milliseconds while servicing USART or RS-485 traffic to a supervisory PLC. With OTP memory it suits mid-volume production where the firmware is finalized and per-unit programming cost is acceptable.
Recommended
BLDC / Stepper Motor Drive
In low- to mid-power BLDC or stepper motor drives, the PIC17C752-33/PT's deterministic 121 ns instruction cycle and dual CCP/PWM modules generate precise switching waveforms for an H-bridge, while the 10-bit ADC samples back-EMF or current-sense signals for commutation control. The 50 I/O lines handle Hall-sensor inputs, enable lines, fault inputs, and tachometer feedback. The OTP memory suits volume appliance or HVAC motor applications where the firmware is locked and price-sensitive.
Recommended
Smart Sensor Hubs
The PIC17C752-33/PT acts as a sensor hub aggregating data from SPI/I2C digital sensors and its own 10-bit ADC channels, then forwarding aggregated readings over USART or RS-485 to a host. Its 678-byte RAM supports modest local buffering and 16 KB of OTP holds the sensor fusion code, calibration tables, and command parser. The PIC RISC core's deterministic latency ensures predictable sampling intervals, which is critical for vibration, flow, and pressure transducers in process control.
Recommended
HVAC and Appliance Controllers
White-goods and HVAC subsystem controllers benefit from the PIC17C752-33/PT's wide operating voltage (4.5 V to 5.5 V), 50 I/O count for keypad, display, and triac interfaces, plus its on-chip 10-bit ADC for thermistor and pressure transducer inputs. The 8.25 MIPS performance handles proportional control loops, user-interface debouncing, and serial diagnostics concurrently. OTP memory is ideal for high-volume appliance designs where the firmware is stable and unit cost dominates BOM decisions.
Recommended
Instrumentation Front-Ends
Bench and field instruments use the PIC17C752-33/PT as a low-cost front-end that scans front-panel buttons, drives an LCD or character display, and converts analog signals with the on-chip 10-bit ADC before forwarding readings over USART. The 16 KB OTP holds calibration tables and menu logic, while 678 bytes of RAM is sufficient for measurement buffers and display line caches. The compact 64-pin TQFP package simplifies layout in hand-held meter housings where PCB area is constrained.
Recommended
Embedded Control Boards (Legacy / MRO)
Maintenance, repair, and operations (MRO) applications supporting installed equipment rely on the PIC17C752-33/PT as an authentic source for legacy boards that cannot be re-engineered without re-qualification. Its 33 MHz core, 50 I/O, and on-chip ADC reproduce the original control behavior exactly, ensuring backwards compatibility with downstream firmware interfaces. Because the part is end-of-life, distributors stock the last-time-buy quantities for spares until the field fleet is retired.
Recommended
Recommended Products Summary
Engineering reference data for PIC17C752-33/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC17C752-33I/PT | PIC17C752-16/PT | PIC17C756A-33/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (10x10 mm) | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same |
| Maximum Clock Frequency | 33 MHz | 33 MHz | 16 MHz | 33 MHz |
| Program Memory | 16 KB OTP | 16 KB OTP | 16 KB OTP | 32 KB OTP |
| RAM | 678 bytes | 678 bytes | 678 bytes | 902 bytes |
| ADC | 10-bit, 12 channels | 10-bit, 12 channels | 10-bit, 12 channels | 10-bit, 12 channels |
| Operating Temperature | 0 C to +70 C | -40 C to +85 C (industrial) | 0 C to +70 C | 0 C to +70 C |
| I/O Pins | 50 | 50 | 50 | 50 |
| 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 |
Key Differentiators
- Industrial temperature grade drop-in option (vs PIC17C752-16/PT)
- Double the program memory at the same clock (vs PIC17C752-16/PT)
- Highest throughput in the family (vs PIC17C752-16/PT)
Design Notes
Decouple Vdd/Vss pairs as close to the PIC17C752-33/PT as possible with a 0.1 uF ceramic plus a 10 uF tantalum or aluminum bulk capacitor; AVdd/AVss should have its own low-pass RC filter (typically 10 ohm + 10 uF) to keep switching noise out of the ADC reference. The 50 I/O lines can source/sink up to 20-25 mA each but the total chip dissipation budget must be observed - keep total I/O current below 200 mA to stay within the TQFP-64 thermal envelope.
Keep the OSC1/OSC2 traces short and guarded with a ground pour; route the analog AVdd/AVss pins away from high-current switching nodes such as motor drivers or triac circuits. Place the MCLR pull-up (typically 10 kohm) close to the pin and add a 100 nF cap to ground if long reset traces are unavoidable. The 64-pin TQFP (10x10 mm) has a 0.5 mm pitch and an exposed thermal pad on some variants - check the package drawing before committing the footprint.
Do not assume the PIC17C752-33/PT is in production - Microchip has marked the family obsolete and recommends the PIC18F6520. Design teams continuing to use this part should plan for last-time-buy, qualify an alternate immediately, and avoid it for new designs. Also note that '33' in the part number denotes maximum clock (33 MHz), not instruction cycle; the instruction cycle is 121 ns due to the 4:1 internal divider. Programming OTP requires a one-time window before the part ships.
Compliance Information
RoHS compliance and lead-free status confirmed by Microchip product page and TrustCompo listing. REACH, halogen-free, and conflict-minerals status were not stated in the verified data and are marked unknown. The part is not AEC-Q100 qualified - Microchip does not market the PIC17C7xx family for automotive safety applications.
