PIC16C65A-10I/PT - 8-Bit 10MHz OTP MCU 7KB Flash 44-TQFP | Microchip
N.º da peça: PIC16C65A-10I/PT ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $12.5 | $12,50 |
| 10 | $11.2 | $112,00 |
| 100 | $9.8 | $980,00 |
| 500 | $8.95 | $4.475,00 |
| 1.000 | $7.95 | $7.950,00 |
PIC16C65A-10I/PT Visão geral
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.
Alternativas drop-in para PIC16C65A-10I/PT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16C65A-10I/PT (mesmo formato e footprint) — diferindo em Package, Timers, Maximum Clock Frequency, Operating Temperature Range, Program Memory Size.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16C65B-10I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16C65A-10I/PQ
✅ Drop-In✓ Em estoque
$5.2 / unidade
Ver ficha técnica →PIC16C65A-04I/P
✅ Drop-In✓ Em estoque
$5.25 / unidade
Ver ficha técnica →PIC16C65A-10I/L
✅ Drop-In✓ Em estoque
$8.2 / unidade
Ver ficha técnica →PIC16F877A-I/PT
✅ Drop-In✓ Em estoque
$4.95 / unidade
Ver ficha técnica →PIC18F452-I/PT
✅ Drop-In✓ Em estoque
$5.84 / unidade
Ver ficha técnica →PIC16C65A-10I/PT Classificações máximas e características elétricas
| 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 |
| Faixa de temperatura de operação | -40C to +85C (Industrial, 'I' suffix) |
| Encapsulamento | 44-pin TQFP (PT) |
| Tipo de montagem | Surface Mount |
| Program Memory Type | OTP (One-Time Programmable, EPROM-based) |
| Architecture | PIC16 RISC, Harvard, 14-bit instructions |
Configuração de pinos do PIC16C65A-10I/PT
| Pino 1 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Pino 2 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Pino 3 | MCLR/VPP — Master clear reset input / programming voltage |
| Pino 4 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pino 5 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pino 6 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Pino 7 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / ADC reference |
| Pino 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pino 9 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| Pino 10 | VSS — Ground reference |
| Pino 11 | VDD — Positive supply voltage |
| Pino 12 | RB0/INT — PORTB bit 0 / external interrupt |
| Pino 13 | RB1 — PORTB bit 1 |
| Pino 14 | RB2 — PORTB bit 2 |
| Pino 15 | RB3/PGM — PORTB bit 3 / LVP programming |
| Pino 16 | RB4 — PORTB bit 4 |
| Pino 17 | RB5 — PORTB bit 5 |
| Pino 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pino 19 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pino 20 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pino 21 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Pino 22 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Pino 23 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pino 24 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pino 25 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pino 26 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Pino 27 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Pino 28 | RD0 — PORTD bit 0 |
| Pino 29 | RD1 — PORTD bit 1 |
| Pino 30 | RD2 — PORTD bit 2 |
| Pino 31 | RD3 — PORTD bit 3 |
| Pino 32 | RD4 — PORTD bit 4 |
| Pino 33 | RD5 — PORTD bit 5 |
| Pino 34 | RD6 — PORTD bit 6 |
| Pino 35 | RD7 — PORTD bit 7 |
| Pino 36 | RE0/RD/AN5 — PORTE bit 0 / read control / analog input 5 |
| Pino 37 | RE1/WR/AN6 — PORTE bit 1 / write control / analog input 6 |
| Pino 38 | RE2/CS/AN7 — PORTE bit 2 / chip select / analog input 7 |
| Pino 39 | VDD — Positive supply voltage (second pin) |
| Pino 40 | VSS — Ground reference (second pin) |
| Pino 41 | NC — Not connected (per datasheet) |
| Pino 42 | NC — Not connected (per datasheet) |
| Pino 43 | NC — Not connected (per datasheet) |
| Pino 44 | NC — Not connected (per datasheet) |
Aplicações típicas
PIC16C65A-10I/PT é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16C65A-10I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- Long-term legacy support with mature supply chain (vs PIC16F877A-I/PT)
- Larger RAM than the related PIC16C64 family (vs PIC16C64A-10I/PT)
- Faster CPU than the 04I variant (vs PIC16C65A-04I/P)
Notas de projeto
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.
Informações de conformidade
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.