PIC17C766-16I/L - 8-Bit 16MHz OTP MCU, 32KB, 84-PLCC | Microchip
MPN: PIC17C766-16I/L ✗ پایان تولیدPIC17C766-16I/L نمای کلی
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.
جایگزین‌های drop-in برای PIC17C766-16I/L — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC17C766-16I/L (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Core Architecture, Mounting Type, Operating Temperature, Data Bus Width.
PIC17C766-16I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC17C766-16E/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC17C756A-16I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC17C762-16I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC17C762-16/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC17C766-16I/L حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | PIC 8-bit (Harvard, RISC) |
| Instruction Set | 58 single-word instructions (PIC17C enhanced) |
| عرض گذرگاه داده | 8-bit |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 902 bytes |
| حداکثر فرکانس کلاک | 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 |
| دمای کاری | -40 C to +85 C (Industrial) |
| بسته‌بندی | 84-pin PLCC (LCC-84 / QCCJ) |
| نوع نصب | Surface Mount / Socketed |
| Lead Finish / Terminal Form | J-bend (PLCC) |
| Recommended Successor | PIC18F8520 |
پیکربندی پین PIC17C766-16I/L
| پین 1 | MCLR/Vpp — Master Clear (reset) input / programming voltage |
| پین 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| پین 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| پین 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| پین 5 | RA3/AN3 — PORTA bit 3 / analog input 3 |
| پین 6 | RA4/AN4 — PORTA bit 4 / analog input 4 |
| پین 7 | RA5/AN5 — PORTA bit 5 / analog input 5 |
| پین 8 | RA6/AN6 — PORTA bit 6 / analog input 6 |
| پین 9 | RA7/AN7 — PORTA bit 7 / analog input 7 |
| پین 10 | Vss — Ground |
| پین 11 | OSC1/CLKIN — Oscillator input / external clock input |
| پین 12 | OSC2/CLKOUT — Oscillator output / clock out |
| پین 13 | RC0 — PORTC bit 0 |
| پین 14 | RC1 — PORTC bit 1 |
| پین 15 | RC2 — PORTC bit 2 |
| پین 16 | RC3 — PORTC bit 3 |
| پین 17 | RD0 — PORTD bit 0 |
| پین 18 | RD1 — PORTD bit 1 |
| پین 19 | RD2 — PORTD bit 2 |
| پین 20 | RD3 — PORTD bit 3 |
| پین 21 | RD4 — PORTD bit 4 |
| پین 22 | RD5 — PORTD bit 5 |
| پین 23 | RD6 — PORTD bit 6 |
| پین 24 | RD7 — PORTD bit 7 |
| پین 25 | Vss — Ground |
| پین 26 | Vdd — Positive supply (4.5 V to 5.5 V) |
| پین 27 | RB0/INT — PORTB bit 0 / external interrupt |
| پین 28 | RB1 — PORTB bit 1 |
| پین 29 | RB2 — PORTB bit 2 |
| پین 30 | RB3 — PORTB bit 3 |
| پین 31 | RB4 — PORTB bit 4 |
| پین 32 | RB5 — PORTB bit 5 |
| پین 33 | RB6 — PORTB bit 6 |
| پین 34 | RB7 — PORTB bit 7 |
| پین 35 | RC4 — PORTC bit 4 |
| پین 36 | RC5 — PORTC bit 5 |
| پین 37 | RC6 — PORTC bit 6 |
| پین 38 | RC7 — PORTC bit 7 |
| پین 39 | RE0 — PORTE bit 0 |
| پین 40 | RE1 — PORTE bit 1 |
| پین 41 | RE2 — PORTE bit 2 |
| پین 42 | RE3 — PORTE bit 3 |
| پین 43 | RE4 — PORTE bit 4 |
| پین 44 | RE5 — PORTE bit 5 |
| پین 45 | RE6 — PORTE bit 6 |
| پین 46 | RE7 — PORTE bit 7 |
| پین 47 | Vss — Ground |
| پین 48 | Vdd — Positive supply |
| پین 49 | RF0 — PORTF bit 0 |
| پین 50 | RF1 — PORTF bit 1 |
| پین 51 | RF2 — PORTF bit 2 |
| پین 52 | RF3 — PORTF bit 3 |
| پین 53 | RF4 — PORTF bit 4 |
| پین 54 | RF5 — PORTF bit 5 |
| پین 55 | RF6 — PORTF bit 6 |
| پین 56 | RF7 — PORTF bit 7 |
| پین 57 | RG0 — PORTG bit 0 |
| پین 58 | RG1 — PORTG bit 1 |
| پین 59 | RG2 — PORTG bit 2 |
| پین 60 | RG3 — PORTG bit 3 |
| پین 61 | RG4 — PORTG bit 4 |
| پین 62 | RG5 — PORTG bit 5 |
| پین 63 | RG6 — PORTG bit 6 |
| پین 64 | RG7 — PORTG bit 7 |
| پین 65 | AVdd — Analog supply voltage |
| پین 66 | AVss — Analog ground |
| پین 67 | RH0 — PORTH bit 0 |
| پین 68 | RH1 — PORTH bit 1 |
| پین 69 | RH2 — PORTH bit 2 |
| پین 70 | RH3 — PORTH bit 3 |
| پین 71 | RH4 — PORTH bit 4 |
| پین 72 | RH5 — PORTH bit 5 |
| پین 73 | RH6 — PORTH bit 6 |
| پین 74 | RH7 — PORTH bit 7 |
| پین 75 | Vss — Ground |
| پین 76 | Vdd — Positive supply |
| پین 77 | TOCK1 — Timer0 clock input |
| پین 78 | NC — Not connected (per datasheet) |
| پین 79 | NC — Not connected (per datasheet) |
| پین 80 | NC — Not connected (per datasheet) |
| پین 81 | NC — Not connected (per datasheet) |
| پین 82 | NC — Not connected (per datasheet) |
| پین 83 | NC — Not connected (per datasheet) |
| پین 84 | NC — Not connected (per datasheet) |
کاربردهای معمول
PIC17C766-16I/L مناسب است برای 6 کاربردs: 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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC17C766-16I/L — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | 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 |
تفاوت‌های کلیدی
- Largest memory in the PIC17C family with 84-pin PLCC and 66 I/O (در مقابلPIC17C762-16I/PT)
- Industrial -40 C to +85 C grade in socket-friendly PLCC package (در مقابلPIC17C766-16I/PT)
- Mature 8-bit PIC17C core with 58 single-word instructions (در مقابلPIC18F8520)
یادداشت‌های طراحی
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.
اطلاعات انطباق
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.
