PIC17C766-16I/L - 8-Bit 16MHz OTP MCU, 32KB, 84-PLCC | Microchip
MPN: PIC17C766-16I/L ✗ Cuối đờiPIC17C766-16I/L Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/OTP), data memory (RAM), and programmable I/O peripherals. The 8-bit MCU class predates 16-bit and 32-bit Cortex-M parts and remains widely deployed in cost-sensitive, deterministic control applications. Within Microchip's portfolio, the PIC17C family sits between the PIC16 mid-range and the enhanced PIC18 devices, offering more peripherals and code space than PIC16 while remaining upward-compatible with PIC12Cxxx and PIC16Cxx instruction sets - only 58 single-word instructions to learn, with all instructions executing in a single cycle except program branches and table reads/writes, which take two cycles.
Key differentiating features of the PIC17C766 include its 84-pin PLCC footprint supporting 66 I/O lines, the integrated 10-bit ADC, hardware multiplier for fast DSP-style math, and the 32 KB (16K x 16) OTP program memory that is one-time programmable but production-friendly. The 16 MHz oscillator with 4-clock internal divider yields the 121 ns instruction cycle, and the device supports a wide peripheral set including USART, capture/compare/PWM, and timers suitable for motor and power conversion control.
Architecturally, the PIC17C766 uses a Harvard bus (separate program and data paths) and an enhanced 8-bit core with a hardware multiply engine; combined with the OTP memory it is well suited to volume production where firmware is fixed at the time of manufacture. Per the manufacturer datasheet, the PIC17C766 is the largest-memory member of the PIC17C family and is now designated NRND/EOL with the PIC18F8520 recommended as the modern flash-based successor.
Typical applications include industrial motor control, HVAC actuators, automotive body and chassis subsystems, white goods and appliance control, and embedded control boards that need many parallel I/O lines plus on-chip ADC. The 84-pin PLCC package is also attractive for legacy through-hole designs and socketed prototyping. When designing with this part, plan for OTP-only programming (code must be committed at production time) and verify supply availability since the device is being phased out in favor of PIC18F flash parts.
Bộ thay thế dễ dàng lắp đặt cho PIC17C766-16I/L — 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 PIC17C766-16I/L (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Mounting Type, Operating Temperature, Data Bus Width.
PIC17C766-16I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C766-16E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C756A-16I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C762-16I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C762-16/PT
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Xem tài liệu →PIC17C766-16I/L Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit (Harvard, RISC) |
| Instruction Set | 58 single-word instructions (PIC17C enhanced) |
| Bề rộng đường dữ liệu | 8-bit |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 902 bytes |
| Tần số xung maksimum | 16 MHz |
| Instruction Cycle Time | 121 ns (8.25 MIPS) |
| Supply Voltage (Vdd) | 4.5 V to 5.5 V |
| I/O Pins | 66 |
| ADC | 10-bit, multi-channel |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp | 84-pin PLCC (LCC-84 / QCCJ) |
| Kiểu lắp đặt | Surface Mount / Socketed |
| Lead Finish / Terminal Form | J-bend (PLCC) |
| Recommended Successor | PIC18F8520 |
Cấu hình chân PIC17C766-16I/L
| Chân 1 | MCLR/Vpp — Master Clear (reset) input / programming voltage |
| Chân 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Chân 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Chân 5 | RA3/AN3 — PORTA bit 3 / analog input 3 |
| Chân 6 | RA4/AN4 — PORTA bit 4 / analog input 4 |
| Chân 7 | RA5/AN5 — PORTA bit 5 / analog input 5 |
| Chân 8 | RA6/AN6 — PORTA bit 6 / analog input 6 |
| Chân 9 | RA7/AN7 — PORTA bit 7 / analog input 7 |
| Chân 10 | Vss — Ground |
| Chân 11 | OSC1/CLKIN — Oscillator input / external clock input |
| Chân 12 | OSC2/CLKOUT — Oscillator output / clock out |
| Chân 13 | RC0 — PORTC bit 0 |
| Chân 14 | RC1 — PORTC bit 1 |
| Chân 15 | RC2 — PORTC bit 2 |
| Chân 16 | RC3 — PORTC bit 3 |
| Chân 17 | RD0 — PORTD bit 0 |
| Chân 18 | RD1 — PORTD bit 1 |
| Chân 19 | RD2 — PORTD bit 2 |
| Chân 20 | RD3 — PORTD bit 3 |
| Chân 21 | RD4 — PORTD bit 4 |
| Chân 22 | RD5 — PORTD bit 5 |
| Chân 23 | RD6 — PORTD bit 6 |
| Chân 24 | RD7 — PORTD bit 7 |
| Chân 25 | Vss — Ground |
| Chân 26 | Vdd — Positive supply (4.5 V to 5.5 V) |
| Chân 27 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 28 | RB1 — PORTB bit 1 |
| Chân 29 | RB2 — PORTB bit 2 |
| Chân 30 | RB3 — PORTB bit 3 |
| Chân 31 | RB4 — PORTB bit 4 |
| Chân 32 | RB5 — PORTB bit 5 |
| Chân 33 | RB6 — PORTB bit 6 |
| Chân 34 | RB7 — PORTB bit 7 |
| Chân 35 | RC4 — PORTC bit 4 |
| Chân 36 | RC5 — PORTC bit 5 |
| Chân 37 | RC6 — PORTC bit 6 |
| Chân 38 | RC7 — PORTC bit 7 |
| Chân 39 | RE0 — PORTE bit 0 |
| Chân 40 | RE1 — PORTE bit 1 |
| Chân 41 | RE2 — PORTE bit 2 |
| Chân 42 | RE3 — PORTE bit 3 |
| Chân 43 | RE4 — PORTE bit 4 |
| Chân 44 | RE5 — PORTE bit 5 |
| Chân 45 | RE6 — PORTE bit 6 |
| Chân 46 | RE7 — PORTE bit 7 |
| Chân 47 | Vss — Ground |
| Chân 48 | Vdd — Positive supply |
| Chân 49 | RF0 — PORTF bit 0 |
| Chân 50 | RF1 — PORTF bit 1 |
| Chân 51 | RF2 — PORTF bit 2 |
| Chân 52 | RF3 — PORTF bit 3 |
| Chân 53 | RF4 — PORTF bit 4 |
| Chân 54 | RF5 — PORTF bit 5 |
| Chân 55 | RF6 — PORTF bit 6 |
| Chân 56 | RF7 — PORTF bit 7 |
| Chân 57 | RG0 — PORTG bit 0 |
| Chân 58 | RG1 — PORTG bit 1 |
| Chân 59 | RG2 — PORTG bit 2 |
| Chân 60 | RG3 — PORTG bit 3 |
| Chân 61 | RG4 — PORTG bit 4 |
| Chân 62 | RG5 — PORTG bit 5 |
| Chân 63 | RG6 — PORTG bit 6 |
| Chân 64 | RG7 — PORTG bit 7 |
| Chân 65 | AVdd — Analog supply voltage |
| Chân 66 | AVss — Analog ground |
| Chân 67 | RH0 — PORTH bit 0 |
| Chân 68 | RH1 — PORTH bit 1 |
| Chân 69 | RH2 — PORTH bit 2 |
| Chân 70 | RH3 — PORTH bit 3 |
| Chân 71 | RH4 — PORTH bit 4 |
| Chân 72 | RH5 — PORTH bit 5 |
| Chân 73 | RH6 — PORTH bit 6 |
| Chân 74 | RH7 — PORTH bit 7 |
| Chân 75 | Vss — Ground |
| Chân 76 | Vdd — Positive supply |
| Chân 77 | TOCK1 — Timer0 clock input |
| Chân 78 | NC — Not connected (per datasheet) |
| Chân 79 | NC — Not connected (per datasheet) |
| Chân 80 | NC — Not connected (per datasheet) |
| Chân 81 | NC — Not connected (per datasheet) |
| Chân 82 | NC — Not connected (per datasheet) |
| Chân 83 | NC — Not connected (per datasheet) |
| Chân 84 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC17C766-16I/L phù hợp cho 6 Áp dụngs: Industrial Motor Control, HVAC and Building Automation, White Goods and Appliance Control, Automotive Body and Chassis Modules, Embedded Instrumentation, Point-of-Sale and Embedded Terminals.
Industrial Motor Control
The PIC17C766-16I/L fits industrial motor-control designs that demand many I/O lines, fast deterministic interrupts, and integrated ADC feedback. With 66 I/O, a 10-bit ADC, hardware PWM/capture modules, and 8.25 MIPS throughput at 16 MHz, it can drive 3-phase inverter commutation, BLDC trapezoidal commutation, or stepper sequencing while sampling current and back-EMF. The 84-pin PLCC also accepts through-hole sockets, easing prototype rework on legacy drives. Note the OTP-only program memory - firmware is committed at production and cannot be field-updated, so use the PIC18F8520 successor if field updates are required.
Được đề xuất
HVAC and Building Automation
HVAC controllers need deterministic timing, plentiful I/O for sensor arrays and triac drivers, and on-chip ADC for temperature and pressure sensing - all native strengths of the PIC17C766-16I/L. The 32 KB OTP (16K x 16) holds complex thermostat, damper, and VAV control loops, while 66 I/O lines multiplex keypads, displays, relay banks and serial communication. The 84-pin PLCC package simplifies socket-based prototyping during NPI builds. Industrial temperature rating (-40 C to +85 C) suits unconditioned equipment rooms, and the 121 ns interrupt latency keeps control loops stable.
Được đề xuất
White Goods and Appliance Control
Washing machines, dishwashers, ovens and refrigerators rely on a single MCU managing motor, valve, sensor, and user-interface functions - exactly the workload the PIC17C766-16I/L was designed for. The integrated 10-bit ADC digitizes temperature and water-level sensors, while 66 I/O lines drive triac-controlled heater elements, latching valves, and multiplexed key/display panels. The OTP memory locks firmware at production, preventing tampering and ensuring regulatory consistency. The PLCC-84 socket compatibility simplifies factory programming and field service swaps. Plan for an NRE mask change if any code update is required after launch.
Được đề xuất
Automotive Body and Chassis Modules
Body controllers for door modules, seat controllers, instrument clusters, and lighting drivers often pair a microcontroller with discrete drivers. The PIC17C766-16I/L's 66 I/O lines, hardware PWM, and 10-bit ADC cover LIN/analog sensing and MOSFET/relay drive in one chip. The 84-pin PLCC package and 5 V supply suit pre-CAN-bus modules still in production for trucks and off-highway vehicles. Note the Industrial (-40 C to +85 C) rather than AEC-Q100 grade; for new automotive designs use dsPIC33 or PIC18F-Q1 parts instead. Useful for service replacements of legacy modules.
Được đề xuất
Embedded Instrumentation
Bench instruments, data loggers, and process-control front-ends benefit from the PIC17C766-16I/L's 66 I/O for keypad and LCD interfaces, the 10-bit ADC for sensor conditioning, and the 32 KB OTP (16K x 16) for calibration tables and menu state machines. The 8.25 MIPS throughput is enough to drive simple text UIs and serial protocols such as RS-232/RS-485 via the on-chip USART. The 84-pin PLCC package is a legacy-friendly choice for through-hole or socketed repair of installed equipment. For new designs requiring field upgradeability, migrate to PIC18F or dsPIC33EP families.
Được đề xuất
Point-of-Sale and Embedded Terminals
POS terminals, vending machine controllers, and ticket dispensers need reliable fixed-function control with many I/O for keypads, displays, and serial peripherals. The PIC17C766-16I/L delivers 66 I/O lines, an integrated 10-bit ADC, USART, and 8.25 MIPS throughput to manage keypad scanning, LCD multiplex, currency sensing, and serial audit logs. The 32 KB OTP locks firmware at production to prevent field tampering - a useful property for metered equipment. The PLCC-84 socket footprint simplifies depot-level repair. Pair with external EEPROM for audit-trail storage and add a watchdog supervisor for unattended deployment.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC17C766-16I/L — 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 | PIC17C766-16I/PT | PIC17C766-16E/PT | PIC17C756A-16I/PT | PIC17C762-16I/PT | PIC17C762-16/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 84-pin PLCC (LCC-84) | 84-pin TQFP | 84-pin TQFP | 84-pin TQFP | 84-pin TQFP | 84-pin TQFP |
| Program Memory | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP |
| RAM | 902 B | 902 B | 902 B | 902 B | 902 B | 902 B |
| Max Clock | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| MIPS | 8.25 MIPS | 8.25 MIPS | 8.25 MIPS | 8.25 MIPS | 8.25 MIPS | 8.25 MIPS |
| I/O Pins | 66 | 66 | 66 | 66 | 66 | 66 |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C | Industrial -40C to +85C | Commercial 0C to +70C |
| 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 |
| Lifecycle | NRND | NRND | NRND | EOL | EOL | EOL |
Bảo phân biệt quan trọng
- Largest memory in the PIC17C family with 84-pin PLCC and 66 I/O (vsPIC17C762-16I/PT)
- Industrial -40 C to +85 C grade in socket-friendly PLCC package (vsPIC17C766-16I/PT)
- Mature 8-bit PIC17C core with 58 single-word instructions (vsPIC18F8520)
Ghi chú thiết kế
PIC17C766-16I/L uses OTP EPROM - firmware can only be programmed once, so commit code only after firmware is fully validated. A programming-cycle mistake costs the entire part. Always order engineering samples or use a PIC18F8520 (flash) for firmware development, then port the final image to the PIC17C766 for production.
Power the PIC17C766-16I/L from a regulated 4.5 V to 5.5 V supply with a 100 nF decoupling cap within 5 mm of each Vdd/Vss pair (there are 4 pairs on the 84-pin PLCC). Place a bulk 10 uF tantalum plus 100 nF ceramic on the analog AVdd/AVss pair and route AVss to a clean ground island. Add a watchdog supervisor and a manual reset button tied to MCLR through a 10 kohm pull-up for robust industrial bring-up.
The 84-pin PLCC is a J-lead surface-mount package that also fits standard PLCC sockets - useful for prototype rework and field replacement. Maintain 0.5 mm clearance under the package to allow cleaning; route oscillator traces (OSC1/OSC2) short and guard them with a ground trace to minimize EMI. Avoid routing switching signals near AVdd/AVss, and keep the analog reference pins (Vref+/Vref-) short and bypassed with 100 nF.
OSC1/OSC2 traces should be kept under 10 mm with a ground guard on both sides to avoid radiating clock harmonics into ADC inputs. The 10-bit ADC reaches ~ +/-1 LSB accuracy only if the analog supply is well decoupled and digital traces do not cross analog traces - use a ground moat around the analog pins. The 121 ns instruction cycle allows deterministic ADC sampling, but enable the ADC acquisition delay based on source impedance to avoid conversion errors.
Thông tin tuân thủ
RoHS, REACH, lead-free and halogen-free status for PIC17C766-16I/L were not explicitly stated in the distributor data provided. Industrial temperature grade (-40C to +85C) is confirmed but AEC-Q100 automotive qualification is not - for new automotive designs use PIC18F-Q1 or dsPIC33EV-Q1 parts.
