PIC16C65A-10I/PT - 8-Bit 10MHz OTP MCU 7KB Flash 44-TQFP | Microchip
MPN: PIC16C65A-10I/PT ✗ Cuối đờiPIC16C65A-10I/PT Tóm tắt
An 8-bit microcontroller (MCU) is a small, low-power computer-on-a-chip integrating a CPU, RAM, program memory, and peripherals on a single die. It belongs to the broader category of embedded microcontrollers, which sit inside the hierarchy of microprocessors -> microcontrollers -> 8-bit microcontrollers -> PIC16C family. The PIC16C65A is part of Microchip's mid-range PIC16C OTP (One-Time-Programmable) lineage, chosen for its deterministic Harvard architecture, simple instruction set, and field-proven reliability in long-life industrial equipment.
Key features include 33 I/O pins, three timers (Timer0, Timer1, Timer2), a 10-bit ADC, a USART for serial communication, and capture/compare/PWM (CCP) peripherals. Power consumption is rated at 5V/4 MHz at 15 uA typical and 3V/32 kHz at 1 uA typical, demonstrating low-power CMOS design that suits battery-backed instrumentation. Industrial temperature grade (-40C to +85C) is denoted by the 'I' suffix, and the OTP memory enables factory-programmed code storage for volume production.
The PIC16C65A uses Microchip's RISC-based PIC16 architecture with 14-bit wide instructions, an 8-bit data path, and a two-stage pipeline for predictable single-cycle execution (200 ns per instruction at 10 MHz). The integrated 10-bit ADC supports up to 8 analog channels, enabling mixed-signal designs without an external converter. In-system serial programming (ICSP) is supported via dedicated RB6/RB7 pins, simplifying firmware upgrades on assembled boards.
Typical applications include industrial control systems, sensor signal conditioning, motor control, white-goods appliances, and embedded instrumentation where deterministic response and long-term supply stability matter. The 33 I/O count makes it well suited to keypad scanning, LED multiplexing, and relay/SSR driver boards.
When designing with this MCU, ensure the supply decoupling network includes a 0.1 uF ceramic capacitor close to VDD and a bulk tantalum/electrolytic capacitor to handle switching transients. Place the crystal or resonator within 1 cm of the OSC1/OSC2 pins to minimize clock jitter and EMI susceptibility.
This page synthesizes Microchip datasheet specifications, distributor pricing, drop-in OTP and Flash alternatives, and practical design notes not consolidated on the official product page, helping engineers shorten BOM validation and component selection time.
Bộ thay thế dễ dàng lắp đặt cho PIC16C65A-10I/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 PIC16C65A-10I/PT (cùng hình factor và footprint) — khác nhau ở Package, Timers, Maximum Clock Frequency, Operating Temperature Range, Program Memory Size.
PIC16C65B-10I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C65A-10I/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65A-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65A-10I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F877A-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F452-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65A-10I/PT Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit Microcontroller (MCU) |
| Program Memory Size | 7 KB (4K x 14) OTP |
| RAM Size | 192 bytes |
| Data EEPROM | 0 bytes (no on-chip EEPROM) |
| Maximum CPU Frequency | 10 MHz |
| Instruction Cycle Time | 200 ns at 10 MHz |
| Supply Voltage (Vdd) | 2.5 V to 6.0 V |
| I/O Pins | 33 |
| ADC | 10-bit, up to 8 channels |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Communication Interfaces | USART (SCI/SPI modes) |
| CCP/PWM Modules | 1 |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial, 'I' suffix) |
| Hộp | 44-pin TQFP (PT) |
| Kiểu lắp đặt | Surface Mount |
| Program Memory Type | OTP (One-Time Programmable, EPROM-based) |
| Architecture | PIC16 RISC, Harvard, 14-bit instructions |
Cấu hình chân PIC16C65A-10I/PT
| Chân 1 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Chân 2 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Chân 3 | MCLR/VPP — Master clear reset input / programming voltage |
| Chân 4 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Chân 5 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Chân 6 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Chân 7 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / ADC reference |
| Chân 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 9 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| Chân 10 | VSS — Ground reference |
| Chân 11 | VDD — Positive supply voltage |
| Chân 12 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 13 | RB1 — PORTB bit 1 |
| Chân 14 | RB2 — PORTB bit 2 |
| Chân 15 | RB3/PGM — PORTB bit 3 / LVP programming |
| Chân 16 | RB4 — PORTB bit 4 |
| Chân 17 | RB5 — PORTB bit 5 |
| Chân 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 19 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 20 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 21 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Chân 22 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Chân 23 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 24 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 25 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 26 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Chân 27 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Chân 28 | RD0 — PORTD bit 0 |
| Chân 29 | RD1 — PORTD bit 1 |
| Chân 30 | RD2 — PORTD bit 2 |
| Chân 31 | RD3 — PORTD bit 3 |
| Chân 32 | RD4 — PORTD bit 4 |
| Chân 33 | RD5 — PORTD bit 5 |
| Chân 34 | RD6 — PORTD bit 6 |
| Chân 35 | RD7 — PORTD bit 7 |
| Chân 36 | RE0/RD/AN5 — PORTE bit 0 / read control / analog input 5 |
| Chân 37 | RE1/WR/AN6 — PORTE bit 1 / write control / analog input 6 |
| Chân 38 | RE2/CS/AN7 — PORTE bit 2 / chip select / analog input 7 |
| Chân 39 | VDD — Positive supply voltage (second pin) |
| Chân 40 | VSS — Ground reference (second pin) |
| Chân 41 | NC — Not connected (per datasheet) |
| Chân 42 | NC — Not connected (per datasheet) |
| Chân 43 | NC — Not connected (per datasheet) |
| Chân 44 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16C65A-10I/PT phù hợp cho 6 Áp dụngs: Industrial Control and Automation, Home Appliance White Goods, Sensor Signal Conditioning and Data Acquisition, Motor Control and PWM Drivers, Automotive Body Electronics (Legacy), Educational and Hobbyist Embedded Platforms.
Industrial Control and Automation
The PIC16C65A-10I/PT's 33 I/O pins, 10 MHz deterministic CPU, and 44-pin TQFP package make it a long-favored choice for industrial control PLCs, conveyor controllers, and machine-tool relay/SSR driver boards. Its 10-bit ADC with up to 8 channels handles analog sensor inputs (4-20 mA, 0-10 V) directly, reducing external signal-conditioning ICs. The industrial temperature grade (-40C to +85C) and 2.5V-6.0V supply range tolerate harsh factory floor conditions, and the deterministic single-cycle PIC16 instruction set ensures predictable interrupt response for safety-critical timing. The OTP memory locks firmware permanently, supporting field-deployed equipment where code-protection is mandatory. Compared to legacy 8051 designs, the PIC16C65A's Harvard architecture and 14-bit instructions deliver denser code, fewer wait states, and lower BOM cost in legacy industrial control systems still running for 20+ years.
Được đề xuất
Home Appliance White Goods
The PIC16C65A-10I/PT is widely deployed in washing machines, dishwashers, microwave oven controllers, and HVAC thermostats because of its low power consumption (15 uA typical at 5V/4 MHz), 33 I/O for keypad/LED multiplexing, and robust peripheral set. Its PWM/CCP module drives triac-based heater control or DC motor speed loops with sufficient resolution for thermal regulation. The OTP memory prevents firmware tampering and reverse engineering, important for consumer appliance safety certifications. The 44-pin TQFP footprint fits compact appliance PCBs while exposing enough I/O for the user-interface keypad, LCD interface, and sensor conditioning. Migration from the OTP PIC16C65A to its Flash sibling PIC16F877A-I/PT enables in-field firmware updates and shorter time-to-market for variant SKUs, but legacy appliance production still relies on the OTP PIC16C65A.
Được đề xuất
Sensor Signal Conditioning and Data Acquisition
The PIC16C65A-10I/PT's on-chip 10-bit ADC, 8 analog channels, and 33 I/O pins support standalone sensor hubs, RTD/thermocouple conditioning front-ends, and laboratory data acquisition devices where the USART links to a host PC or display. The 192-byte RAM and 7 KB OTP suffice for cyclic acquisition buffers and modest DSP-like filtering. The 5V/4 MHz power consumption of 15 uA typical, combined with the 3V/32 kHz sleep mode at 1 uA typical, suits battery-powered portable instruments. Compared to a discrete analog front-end plus microcontroller approach, integrating the ADC and CPU in the PIC16C65A reduces BOM count, PCB area, and design complexity. Industrial temperature operation ensures reliable acquisition in field-deployed measurement nodes.
Được đề xuất
Motor Control and PWM Drivers
The PIC16C65A-10I/PT's CCP/PWM module, three timers, and 33 I/O make it a cost-effective choice for small DC motor speed controllers, stepper drivers, and fan RPM regulators in HVAC and appliance subsystems. The 10-bit ADC provides closed-loop feedback from current-sense shunts or back-EMF sensing resistors. The 10 MHz instruction rate generates 200 ns PWM resolution, suitable for brushed DC and unipolar stepper control at moderate speeds. The OTP memory locks the motor control firmware and tuning tables, important for safety-critical motion control. Compared to using a dedicated motor-control ASIC, the PIC16C65A's programmability allows custom acceleration/deceleration profiles and protection logic in a single 44-TQFP IC.
Được đề xuất
Automotive Body Electronics (Legacy)
Although the PIC16C65A-10I/PT is not AEC-Q100 qualified, it has historically appeared in non-safety automotive subsystems such as interior lighting controllers, seat-heater drivers, and accessory timers where the OTP memory prevents aftermarket firmware modification. The 33 I/O pins handle multiple lamp drivers, switches, and rotary encoders while the USART interfaces with other body controllers. The industrial temperature grade is acceptable for cabin-mounted modules. Engineers designing new automotive electronics should target AEC-Q100 qualified PIC16F or dsPIC parts, but for legacy vehicles with long service lives, the PIC16C65A's mature supply and field-proven reliability keep it in service decades after deployment.
Được đề xuất
Educational and Hobbyist Embedded Platforms
The PIC16C65A-10I/PT's mature documentation, broad peripheral set, and 44-pin TQFP package make it a teaching vehicle for embedded systems courses covering PIC16 assembly, C programming, and peripheral interfacing. The 7 KB OTP and 192-byte RAM force students to write efficient code, optimizing for memory and CPU cycles. The USART enables serial debug and terminal I/O, while the 10-bit ADC introduces mixed-signal programming concepts. Compared to modern Curiosity or Explorer development boards, the PIC16C65A still appears in legacy university labs and hobbyist projects focused on PIC16 architecture fundamentals. Migration to PIC16F877A-I/PT preserves the learning path while enabling Flash-based reprogramming for faster iteration.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C65A-10I/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 | PIC16C65B-10I/PT | PIC16C65A-10I/PQ | PIC16C65A-04I/P | PIC16F877A-I/PT | PIC18F452-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (PT) | 44-TQFP (PT) - same | 44-MQFP (PQ) - same footprint | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 14 KB Flash | 32 KB Flash |
| RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 368 bytes | 1536 bytes |
| Max CPU Frequency | 10 MHz | 10 MHz | 10 MHz | 4 MHz | 20 MHz | 40 MHz |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 34 |
| ADC | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels |
| Lifecycle Status | Obsolete / NRND | Obsolete / NRND | Obsolete / NRND | Obsolete / NRND | Active | Active |
| Program Memory Type | OTP | OTP | OTP | OTP | Flash | Flash |
Bảo phân biệt quan trọng
- Long-term legacy support with mature supply chain (vsPIC16F877A-I/PT)
- Larger RAM than the related PIC16C64 family (vsPIC16C64A-10I/PT)
- Faster CPU than the 04I variant (vsPIC16C65A-04I/P)
Ghi chú thiết kế
Decouple the PIC16C65A-10I/PT VDD pins (11 and 39) with a 0.1 uF ceramic capacitor placed within 5 mm of each VDD pin, plus a single 10 uF tantalum or electrolytic bulk capacitor near the IC. For battery-powered designs that use the 32 kHz low-power mode, choose a low-leakage ceramic (C0G/NP0) for the 0.1 uF decoupling to avoid quiescent current exceeding the 1 uA typical sleep spec. Estimated: total quiescent current in sleep with proper decoupling is approximately 1-2 uA at 3V.
Route the OSC1/OSC2 traces to the crystal or resonator as short and symmetric as possible, keeping total trace length under 1 cm and surrounding them with a ground pour to minimize clock jitter and EMI. Place the MCLR pull-up resistor (typically 4.7 kohm to 10 kohm) close to the MCLR pin. Keep high-speed digital signals (USART, SPI, PWM) away from analog traces to reduce ADC noise coupling; the analog reference pin (RA3/VREF) requires a low-noise bypass network.
OTP memory in the PIC16C65A-10I/PT cannot be erased after programming; verify firmware in a Flash-based PIC16F877A-I/PT or PIC18F452-I/PT first before committing to the OTP part for production. Do not exceed 6.0V on VDD or drop below 2.5V, otherwise ADC accuracy and flash programming reliability degrade. The ICSP pins RB6/RB7 must be freed from external pull-ups during in-circuit programming to avoid contention with the programmer drive signals.
Thông tin tuân thủ
PIC16C65A-10I/PT is OTP EPROM-based mature silicon; RoHS, lead-free, and halogen-free statuses are not explicitly stated in the verified web data and are marked [DATA_NEEDED]. Not AEC-Q100 qualified - do not select for new automotive safety applications. Conflict-minerals compliance assumed per Microchip public policy.