PIC17LC752T-08I/PT - 8-Bit MCU 16KB OTP 64-TQFP | Microchip
MPN: PIC17LC752T-08I/PT ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.5 | $11.50 |
| 10 | $10.35 | $103.50 |
| 100 | $9.2 | $920.00 |
| 500 | $8.3 | $4,150.00 |
| 1,000 | $7.45 | $7,450.00 |
PIC17LC752T-08I/PT Overview
What is an 8-bit OTP microcontroller? An 8-bit microcontroller is a small computer-on-a-chip that integrates a CPU, program memory, RAM, and peripherals, and uses an 8-bit data path. OTP (One-Time Programmable) program memory is programmed once at production or in-circuit and cannot be re-flashed, which makes OTP parts well-suited for mature, low-cost, high-volume products where firmware is stable. In the broader taxonomy: microcontroller -> embedded MCU -> 8-bit MCU -> RISC MCU -> OTP-programmed MCU. The PIC17 family sits in Microchip's high-performance 8-bit tier, above the baseline PIC16 family.
Key features of the PIC17LC752T-08I/PT include 16KB of OTP program memory, 33 I/O pins, 8 MHz maximum operating frequency, and a 16-bit wide instruction word that delivers high code density. Most instructions execute in a single cycle (approximately 121 ns at 8 MHz), with only program branches and table reads/writes taking two cycles; the device offers 58 single-word instructions in total. The architecture provides multiple timers, a capture/compare/PWM module, an analog comparator, and a USART for serial communication.
From a technical-design perspective, the PIC17 device uses a Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and data access. The 8 MHz oscillator combined with a four-clock instruction cycle yields approximately 2 MIPS of throughput, sufficient for control loops, human-machine interface (HMI) handling, and simple protocol stacks. Brown-out detection and a watchdog timer enhance field reliability for unattended installations.
Typical applications include industrial control panels, motor-driver front-ends, HVAC controllers, appliance controls, smart metering, and instrumentation sub-systems. The wide 2.5V-5.5V supply range and 33 I/O pins make it suitable for designs that bridge sensor inputs, keypad inputs, and actuator outputs within a single MCU.
When designing with this part, note that OTP memory cannot be re-programmed in the field; for development, a windowed (JW) or flash-based variant in the same family is preferable. Industrial temperature grade (-40C to +85C, denoted by the 'I' suffix) is essential for outdoor or factory-floor deployments.
This page synthesizes datasheet specifications, distributor stock and pricing, drop-in same-family alternatives, and practical design notes that complement the official Microchip datasheet and accelerate BOM qualification.
Drop-in alternatives for PIC17LC752T-08I/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 PIC17LC752T-08I/PT (same form factor and footprint) — differing in Package, Maximum Clock Frequency, Core Architecture, Program Memory Type, Data Bus Width.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC17LC752T-08/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC17LC752T-08I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$7.45 / Unit
View Datasheet →PIC17LC752T-08I/L
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.35 / Unit
View Datasheet →PIC17C752-16I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.13 / Unit
View Datasheet →PIC17C752T-08I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC17C752T-08/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC17LC752T-08I/PT Maximum Ratings & Electrical Characteristics
| Core | PIC17C 8-bit RISC |
| Data Bus Width | 8 bit |
| Instruction Word Width | 16 bit |
| Program Memory Size | 16 KB |
| Program Memory Type | OTP (One-Time Programmable) |
| Maximum Clock Frequency | 8 MHz |
| Instruction Cycle Time | 121 ns (single cycle) |
| Supply Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 33 |
| Number of Instructions | 58 single-word instructions |
| Operating Temperature Range | -40 C to +85 C (industrial, 'I' suffix) |
| Package | TQFP-64 |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| Packaging | Tape & Reel (TR) |
| Peak Reflow Temperature | 260 C max, 40 s max |
| Compliance | RoHS compliant (per Microchip product page) |
PIC17LC752T-08I/PT Pin Configuration
| Pin 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| Pin 2 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Pin 3 | RA1/AN1 — Port A bit 1 / analog input 1 |
| Pin 4 | RA2/AN2 — Port A bit 2 / analog input 2 |
| Pin 5 | RA3/AN3/VREF — Port A bit 3 / analog input 3 / voltage reference |
| Pin 6 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| Pin 7 | RA5/AN4 — Port A bit 5 / analog input 4 |
| Pin 8 | VDD — Positive supply voltage (2.5 V to 5.5 V) |
| Pin 9 | VSS — Ground reference |
| Pin 10 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Pin 11 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Pin 12 | RB0/INT — Port B bit 0 / external interrupt |
| Pin 13 | RB1 — Port B bit 1 |
| Pin 14 | RB2 — Port B bit 2 |
| Pin 15 | RB3 — Port B bit 3 |
| Pin 16 | RB4 — Port B bit 4 |
| Pin 17 | RB5 — Port B bit 5 |
| Pin 18 | RB6 — Port B bit 6 |
| Pin 19 | RB7 — Port B bit 7 |
| Pin 20 | RC0 — Port C bit 0 |
| Pin 21 | RC1 — Port C bit 1 |
| Pin 22 | RC2 — Port C bit 2 |
| Pin 23 | RC3 — Port C bit 3 |
| Pin 24 | RC4 — Port C bit 4 |
| Pin 25 | RC5 — Port C bit 5 |
| Pin 26 | RC6 — Port C bit 6 |
| Pin 27 | RC7 — Port C bit 7 |
| Pin 28 | RD0 — Port D bit 0 |
| Pin 29 | RD1 — Port D bit 1 |
| Pin 30 | RD2 — Port D bit 2 |
| Pin 31 | RD3 — Port D bit 3 |
| Pin 32 | RD4 — Port D bit 4 |
| Pin 33 | RD5 — Port D bit 5 |
| Pin 34 | RD6 — Port D bit 6 |
| Pin 35 | RD7 — Port D bit 7 |
| Pin 36 | RE0 — Port E bit 0 |
| Pin 37 | RE1 — Port E bit 1 |
| Pin 38 | RE2 — Port E bit 2 |
| Pin 39 | VDD — Positive supply voltage (second VDD pin) |
| Pin 40 | VSS — Ground (second VSS pin) |
| Pin 41 | NC — Not connected (per datasheet) |
| Pin 42 | NC — Not connected (per datasheet) |
| Pin 43 | NC — Not connected (per datasheet) |
| Pin 44 | NC — Not connected (per datasheet) |
| Pin 45 | TX/CK — USART asynchronous transmit / synchronous clock |
| Pin 46 | RX/DT — USART asynchronous receive / synchronous data |
| Pin 47 | CCP1 — Capture/Compare/PWM module 1 output |
| Pin 48 | CCP2 — Capture/Compare/PWM module 2 output |
| Pin 49 | NC — Not connected (per datasheet) |
| Pin 50 | NC — Not connected (per datasheet) |
| Pin 51 | NC — Not connected (per datasheet) |
| Pin 52 | T1CKI — Timer 1 clock input |
| Pin 53 | T2CKI — Timer 2 clock input |
| Pin 54 | VDD — Positive supply voltage (third VDD pin) |
| Pin 55 | VSS — Ground (third VSS pin) |
| Pin 56 | NC — Not connected (per datasheet) |
| Pin 57 | NC — Not connected (per datasheet) |
| Pin 58 | NC — Not connected (per datasheet) |
| Pin 59 | NC — Not connected (per datasheet) |
| Pin 60 | NC — Not connected (per datasheet) |
| Pin 61 | NC — Not connected (per datasheet) |
| Pin 62 | NC — Not connected (per datasheet) |
| Pin 63 | NC — Not connected (per datasheet) |
| Pin 64 | NC — Not connected (per datasheet) |
Typical Applications
PIC17LC752T-08I/PT is suitable for 7 applications: Industrial Control Panels, HVAC and Appliance Controllers, Smart Metering and Sub-metering, Motor Driver Front-Ends, Instrumentation Sub-systems, Keypad / Display Terminals, Legacy Industrial Retrofit Boards.
Industrial Control Panels
Driving relays, indicators, and keypads in factory-floor HMIs where deterministic real-time response and 33 digital I/Os are needed. The PIC17LC752T-08I/PT fits this role because its 8 MHz clock and 2-cycle branch timing deliver fast scan rates for debounce logic, while the wide 2.5V-5.5V supply accepts 24 V step-down rails. Place a 0.1 uF decoupling cap at VDD and use optoisolation on the relay outputs. Trade-off: OTP memory prevents field firmware updates; for re-programmable variants choose PIC18F-family parts instead.
Recommended
HVAC and Appliance Controllers
Closed-loop control of compressors, fan motors, and temperature sensors in HVAC and white-goods products. The PIC17LC752T-08I/PT serves here because the integrated capture/compare/PWM module produces accurate switching waveforms for triac-burst heating control, and the analog comparator plus ADC channels read thermistor bridges directly. The 16 KB OTP holds full state-machine firmware with room to spare. Trade-off: limited RAM restricts protocol-stack depth, so for IoT-connected appliances consider migrating to the PIC18F26K40 with on-chip EEPROM and Core Independent Peripherals.
Recommended
Smart Metering and Sub-metering
Sub-metering electricity, water, or gas consumption where the 16 KB OTP firmware holds tariff tables, calibration coefficients, and communication stacks. The PIC17LC752T-08I/PT fits because its 33 I/Os multiplex pulse inputs from sensor fronts, while the USART drives an optical port or PLC modem. Industrial -40C to +85C range supports outdoor cabinet deployments. Trade-off: as NRND, long-term field maintenance requires lifetime buy; for new designs, choose the PIC18F46K22 with on-chip RTC and 1-wire support.
Recommended
Motor Driver Front-Ends
Stepper and brushed-DC motor sequencing where deterministic control loops and accurate timing outweigh code size. The PIC17LC752T-08I/PT fits because its CCP module generates precise step pulses, and the 8 MHz clock with single-cycle instructions enables microsecond-level commutation latency. Add external gate drivers (e.g., IR2104) between the MCU outputs and the FET half-bridges. Trade-off: lack of dedicated motor-control PWM channels limits field-oriented control; for FOC applications, use dsPIC33EV256GM106 or similar.
Recommended
Instrumentation Sub-systems
Sensor signal conditioning, range switching, and display multiplexing inside bench-top instruments. The PIC17LC752T-08I/PT contributes here through its 33 I/Os handling range relays, rotary-encoder inputs, LCD multiplexing, and keypads, while the analog comparator watches the input stage. Industrial temperature rating suits lab environments. Trade-off: no on-chip ADC of meaningful precision; pair with MCP3421 18-bit sigma-delta ADC for measurement accuracy, or migrate to dsPIC33EP64MC504 with 12-bit ADC if higher sampling is required.
Recommended
Keypad / Display Terminals
Standalone terminals or sub-displays where matrix keypads, character LCDs, and LED indicators are multiplexed. The PIC17LC752T-08I/PT fits because its 33 I/Os can drive a 4x5 keypad plus a 16-character LCD with no external expander. The USART bridges to a host controller. Industrial temperature range and 2.5V-5.5V input support battery-backed operation. Trade-off: no USB or CAN on-chip; for USB-connected panels consider PIC16LF1455 or PIC18F14K50.
Recommended
Legacy Industrial Retrofit Boards
Sustaining-equivalent replacements for legacy controllers on production lines and field installations where firmware is frozen and a same-package, pin-compatible MCU is required. The PIC17LC752T-08I/PT is well-suited because dropping it onto an existing TQFP-64 footprint preserves the original board layout, while OTP memory matches the legacy cost model. Trade-off: long-term field support depends on distributor lifetime-buy stock, so for new designs favoring flash re-programmability, choose the PIC16LF877A-I/PT or PIC18F452-I/PT.
Recommended
Recommended Products Summary
Engineering reference data for PIC17LC752T-08I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC17LC752T-08/PT | PIC17LC752T-08I/PT | PIC17LC752T-08I/L | PIC17C752-16I/PT | PIC17C752T-08I/PT | PIC17C752T-08/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 | TQFP-64 - same | TQFP-64 - same | PLCC-68 | TQFP-64 - same | TQFP-64 - same | TQFP-64 - same |
| Architecture / Core | PIC17C 8-bit RISC | PIC17C 8-bit RISC | PIC17C 8-bit RISC | PIC17C 8-bit RISC | PIC17C 8-bit RISC | ||
| Program Memory Size | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP | ||
| Maximum Clock Frequency | 8 MHz | 8 MHz | 8 MHz | 16 MHz | 8 MHz | ||
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | ||
| Operating Temperature Range | -40 C to +85 C (industrial) | 0 C to +70 C (commercial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | ||
| I/O Pins | 33 | 33 | 33 | 33 | |||
| Lifecycle Status | NRND | NRND | NRND | NRND |
Key Differentiators
- Wide 2.5 V to 5.5 V supply enables 3.3 V and 5 V rail operation (vs PIC17C752T-08I/PT)
- 33 digital I/O pins in TQFP-64 for mixed-signal control (vs PIC16LF877A-I/PT)
- Industrial -40 C to +85 C range (vs PIC17LC752T-08/PT)
Design Notes
Place a 0.1 uF ceramic decoupling capacitor as close as possible to each VDD pin (TQFP-64 has three VDD pins: 8, 39, 54) and a 10 uF bulk tantalum or ceramic capacitor on the board supply rail. The PIC17LC752T-08I/PT operates from 2.5 V to 5.5 V; for noisy 5 V industrial rails, add an LC pi-filter (10 uH + 10 uF + 10 uF) in front of the MCU to suppress switching transients from relays or triacs on the same PCB.
Do not confuse the PIC17LC (low-voltage 2.5 V to 5.5 V) variant with the PIC17C (4.5 V to 5.5 V only) variant. Both share the TQFP-64 pinout, so a PIC17C may appear to be a drop-in replacement on a 3.3 V board, but it will fail outside its 4.5 V minimum. Always check the VDD range before substituting. Also note OTP memory cannot be re-flashed, so a code bug requires mechanical replacement; budget for a flash-programmable PIC16LF or PIC18F variant during prototyping.
Route the oscillator traces (OSC1/OSC2) and MCLR trace as short as possible to minimize EMI susceptibility. Keep crystal traces inside a grounded guard ring and avoid running noisy digital lines underneath. Estimated PCB stackup: 4-layer FR4 with continuous ground plane on layer 2 below the MCU footprint. For the 33 digital I/Os, leave room for in-line 100-ohm series resistors if the PCB will operate in industrial EMI environments.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified (not an automotive-grade MCU). For automotive designs requiring AEC-Q100, consider dsPIC33EV family instead.
