PIC17C766-16E/PT - 8-Bit OTP MCU, 32KB, 16MHz, 80-TQFP | Microchip
MPN: PIC17C766-16E/PT ✗ Cuối đờiPIC17C766-16E/PT Tóm tắt
What is an 8-bit OTP microcontroller? An 8-bit OTP (One-Time Programmable) microcontroller is a single-chip computer built around an 8-bit data path, with non-volatile program memory that can be written once and then becomes read-only - ideal for production volumes where field reprogramming is not required. It sits within the broader hierarchy of microcontroller -> embedded controller -> semiconductor IC, and the PIC17C family represents Microchip's highest-pin-count, highest-performance 8-bit architecture before the migration to PIC18 flash parts.
Key features of the PIC17C766 include 8.25 MIPS throughput (121 ns instruction cycle), 58 single-word instructions, upwards source-code compatibility with PIC16C5X, PIC12CXXX, and PIC16CXX devices, 33 levels of hardware stack, and a hardware multiplier that executes an 8x8 multiply in a single instruction cycle. The 80-pin TQFP footprint exposes a 16-bit external memory interface for systems that need more RAM or specialty memory-mapped peripherals than the on-chip 902 bytes provide.
The device is built on an enhanced CMOS process with low-power design techniques, supporting typical applications in industrial control, automotive body and chassis ECUs, appliance control, and instrumentation front-ends. The extended temperature grade and the broader PIC17C peripheral mix distinguish it from the smaller PIC16C and PIC17C75x predecessors. New designs are directed to the recommended replacement PIC18F8520 (per Microchip's product page note "A newer device is available. Please consider PIC18F8520.").
Design consideration: when migrating, validate the OTP programming timing, the external memory bus timing, and the ADC acquisition time against the new flash part; the PIC18F8520 is pin-to-pin compatible in many TQFP variants, but peripheral SFR addresses differ. This page synthesizes distributor pricing, drop-in alternatives, and practical sourcing notes not found in the bare manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC17C766-16E/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC17C766-16E/PT (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Data Bus Width, Operating Temperature, I/O Pins.
PIC17C766-16/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC17C766T-16E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C766-16I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C766T-16I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F8520
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC17C766-16E/PT Tỷ lệ tối đa & tính chất điện
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 902 bytes |
| Data EEPROM | Not present (OTP family) |
| CPU Core | PIC17C 8-bit RISC |
| Tần số xung maksimum | 16 MHz |
| Instruction Execution Throughput | 8.25 MIPS (121 ns/instruction) |
| Instruction Set Size | 58 single-word instructions |
| Supply Voltage (Vdd) | 5 V typical (range per datasheet) |
| Operating Temperature Grade | Extended Industrial (-40C to +125C), -E suffix |
| ADC | 10-bit, up to 16 channels |
| PWM Modules | 3 |
| Capture Inputs | 4 |
| Serial Interfaces | SSP (SPI / I2C) + 2x USART (UART) |
| External Memory Bus | 16-bit address/data, external memory interface |
| Hardware Stack Levels | 33 |
| Hardware Multiplier | 8x8 in single instruction cycle |
| I/O Pins | Up to 66 (80-pin TQFP) |
| Hộp | 80-pin TQFP (PT), 12x12 mm, gull-wing |
| Terminal Form | GULL WING |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant (per distributor listings) |
Hướng dẫn cấu hình chân PIC17C766-16E/PT 80-pin tqfp (pt), 12x12 mm, gull-wing
Cấu hình chân cho PIC17C766-16E/PT (80-pin tqfp (pt), 12x12 mm, gull-wing gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho PIC17C766-16E/PT.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
PIC17C766-16E/PT phù hợp cho 6 Áp dụngs: Industrial Process Control PLCs, Automotive Body and Chassis ECUs, Appliance and HVAC Control Boards, Instrumentation and Data Acquisition Front-Ends, Point-of-Sale and Printer Control Logic, Medical Device Control and Monitoring.
Industrial Process Control PLCs
The PIC17C766-16E/PT fits industrial PLC I/O modules thanks to its 32 KB OTP program memory, 16 channels of 10-bit ADC for analog sensor inputs, 3 PWM outputs for valve and actuator control, and the 80-pin TQFP package exposing a 16-bit external memory bus for large lookup tables. At 16 MHz / 8.25 MIPS, it executes PID loops with sub-100us cycle times while leaving headroom for HMI or Modbus stack tasks. The -40C to +125C extended temperature grade tolerates cabinet-mounted deployments. Unlike modern flash parts, OTP enforces code immutability - a security plus for locked-bill-of-materials industrial systems but a liability for any design needing field firmware updates.
Được đề xuất
Automotive Body and Chassis ECUs
Body controllers, climate-control modules, and instrument cluster slaves benefit from the PIC17C766-16E/PT's automotive-grade operating temperature (-40C to +125C), 66 GPIO, and multiple serial interfaces. The 16 MHz PIC17C core handles CAN-style messaging via the dual USART and SSP, while the 10-bit ADC reads thermistors and position sensors. The 80-pin TQFP footprint provides enough pins for direct H-bridge, lighting, and switch-matrix wiring. For new automotive designs, the recommended flash-based PIC18F8520 supersedes the OTP PIC17C766; however, existing service-parts channels still source this MPN for warranty repair.
Được đề xuất
Appliance and HVAC Control Boards
Washing machines, dishwashers, refrigerators, and HVAC thermostats use the PIC17C766-16E/PT for motor and compressor sequencing. The 3 PWM channels drive brushless DC or variable-frequency drives, while the 4 capture inputs sense tachometer feedback for closed-loop speed control. The 32 KB OTP program memory holds the state-machine plus diagnostic logics; the extended temperature range tolerates under-hood and behind-panel heat. OTP also protects the manufacturer's firmware IP from being read back or modified - a real anti-cloning advantage in mass-market appliances where reverse-engineering risk is high.
Được đề xuất
Instrumentation and Data Acquisition Front-Ends
Multi-channel data loggers and bench-top instrumentation use the PIC17C766-16E/PT's 10-bit ADC with up to 16 channels, 902 bytes of RAM, and external memory bus to buffer sample streams before forwarding them via UART or SPI. The 8.25 MIPS throughput sustains sampling rates in the tens of kHz range while running an on-device user interface. The 80-pin TQFP makes hand-prototyping feasible on standard 0.5 mm-pitch breakout boards. Designers of new instruments should consider the PIC18F8520 for its flash-based in-system programming and expanded RAM, while preserving the same ADC channel count.
Được đề xuất
Point-of-Sale and Printer Control Logic
Receipt printers, barcode scanners, and POS terminals leverage the PIC17C766-16E/PT's dual USART for host and peripheral comms, SSP for SPI/I2C peripherals, and 80-pin TQFP for connection to keypads, displays, and stepper-motor paper feeders. The 32 KB OTP memory holds font tables and command interpreters. The OTP also locks the firmware against tampering, which is desirable for payment-terminal security certifications. The extended temperature grade supports kitchen-printer and outdoor-terminal use cases where ambient heat is significant.
Được đề xuất
Medical Device Control and Monitoring
Non-invasive medical devices such as infusion pumps, patient monitors, and laboratory analyzers historically used the PIC17C766-16E/PT for its deterministic 8-bit core and extended temperature grade. The 16-channel ADC reads sensor arrays, while the PWM outputs drive audible and visual alarms. The 902-byte RAM and external memory bus enable large reference tables for sensor calibration. New medical designs are migrating to the PIC18F8520 flash part for IEC 60730 software-class-B support, but legacy service channels continue to source the OTP PIC17C766-16E/PT for warranty repair of deployed equipment.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC17C766-16E/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC17C766-16/PT | PIC17C766T-16E/PT | PIC17C766-16I/PT | PIC17C766T-16I/PT | PIC18F8520 |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 80-pin TQFP (PT) | 80-pin TQFP (PT) - same | 80-pin TQFP (PT) - same | 80-pin TQFP (PT) - same | 80-pin TQFP (PT) - same | 80-pin TQFP (PT) - same |
| Program Memory | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB Flash |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 40 MHz |
| Temperature Grade | Extended (-40C to +125C) | Commercial (0C to +70C) | Extended (-40C to +125C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Extended (-40C to +125C) |
| Memory Type | OTP | OTP | OTP | OTP | OTP | Flash (re-programmable) |
| ADC | 10-bit, up to 16 channels | 10-bit, up to 16 channels | 10-bit, up to 16 channels | 10-bit, up to 16 channels | 10-bit, up to 16 channels | 10-bit, up to 16 channels |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Active (recommended replacement) |
Bảo phân biệt quan trọng
- Extended industrial temperature grade at 16 MHz (vsPIC17C766-16/PT)
- Tape-and-reel packaging variant available (vsPIC17C766T-16E/PT)
- Flash-based replacement available with same footprint (vsPIC18F8520)
Ghi chú thiết kế
The PIC17C766-16E/PT uses One-Time Programmable (OTP) memory, meaning firmware is written once and cannot be updated in-circuit. Plan programming time and verification flow carefully during production - a single bad write bricks the device. For any design anticipating field firmware updates, migrate to the flash-based PIC18F8520 instead, which is the manufacturer-recommended replacement on the same 80-pin TQFP footprint.
Estimated: at full 16 MHz operation with all peripherals active, the PIC17C766-16E/PT dissipates approximately 200-300 mW. The 80-pin TQFP package provides adequate thermal mass for the extended temperature grade (-40C to +125C) without an external heatsink, but designers should still provide a copper pour connected to all GND pins to keep junction-to-ambient thermal resistance low. Verify with the manufacturer's thermal model before locking the layout.
Place decoupling capacitors (0.1 uF ceramic + 10 uF bulk) as close as possible to the VDD/VSS pairs of the PIC17C766-16E/PT. The 80-pin TQFP at 0.5 mm pitch demands reflow-profile control (peak 245C typical) and soldering-pad design per IPC-7351. Use a 4-layer PCB with continuous ground plane for the analog ADC channels to minimize digital switching noise coupling into the 10-bit ADC inputs.
Thông tin tuân thủ
RoHS compliance confirmed by distributor listings (Hotenda, DigiKey). REACH, halogen-free, and conflict-minerals status not stated in the verified web data; flagged as unknown per Data Authenticity Rule 1. AEC-Q100 not explicitly claimed by Microchip for this part number.
