PIC16C65A-04I/P - 8-Bit 4MHz OTP MCU 7KB EPROM | Microchip
料号： PIC16C65A-04I/P ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.2 | $8.20 |
| 10 | $7.38 | $73.80 |
| 100 | $6.55 | $655.00 |
| 500 | $5.9 | $2,950.00 |
| 1,000 | $5.25 | $5,250.00 |
PIC16C65A-04I/P 概述
An 8-bit microcontroller (MCU) is a programmable digital logic device that combines a CPU, non-volatile program memory, working RAM, and configurable peripheral blocks (I/O, timers, communication interfaces) on a single silicon die. PIC microcontrollers follow the RISC (Reduced Instruction Set Computer) philosophy and use a Harvard architecture with separate program and data buses, delivering deterministic instruction execution in as little as 200 ns. The PIC16C family sits within the broader hierarchy: MCU -> 8-bit MCU -> PIC16C family -> PIC16C6x sub-family -> PIC16C65A device. EPROM-based members are one-time-programmable and intended for low-volume production or legacy socket replacement.
Key features include 33 I/O pins arranged across multiple ports (PORTA, PORTB, PORTC, PORTD, PORTE), three timers (TMR0, TMR1, TMR2), a 5-channel 8-bit Analog-to-Digital Converter, and serial communication peripherals including SSP for I2C/SPI and a USART for UART. Additional features include an 8-bit parallel slave port, watchdog timer with on-chip RC oscillator, power-on reset, brown-out reset, and power-saving SLEEP mode. The device operates from 2.5V to 6.0V.
The PIC16C65A uses a 14-bit instruction word with 35 single-word instructions, allowing compact code density. The Harvard bus structure enables simultaneous instruction fetch and data access, contributing to the one-instruction-per-cycle (except branches) throughput. External interrupt, RB port-change interrupt, and multiple peripheral interrupt sources support real-time event handling in embedded systems.
Typical applications include industrial control systems, automotive body and chassis electronics, white goods and appliance controllers, security and access control panels, sensor signal conditioning front-ends, and legacy embedded system maintenance. The DIP-40 package supports breadboard and socketed designs favored in education, prototyping, and field-replaceable assemblies.
When designing with this device, note that EPROM windows are not present on plastic PDIP packages; code must be committed via device programmer at production. Use ICD or compatible in-circuit debugger header for development. Ensure the Vdd/Vss decoupling follows the manufacturer recommended layout (100 nF ceramic within 5 mm of each supply pin) to maintain ADC accuracy.
This page synthesizes distributor availability, drop-in alternatives, and practical design considerations not consolidated on the manufacturer datasheet.
直接替换替代料： PIC16C65A-04I/P ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC16C65A-04I/P （相同外形与封装尺寸） ——差异在于 Package, Core Architecture, Timers, Program Memory Type, Mounting Type.
快速对比工具——选择替代料号进行并排对比：
PIC16C65A-04/P
✅ 直接替换✓ 有现货
$8.1 / 个
查看数据手册 →PIC16C65B-04I/P
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.75 / 个
查看数据手册 →PIC16F877A-I/P
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
联系询价
查看数据手册 →PIC16F877-04/P
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
联系询价
查看数据手册 →PIC16C64A-04I/P
✅ 直接替换✓ 有现货
$6.1 / 个
查看数据手册 →PIC16C65A-04I/P 最大额定值与电气特性
| Product Family | PIC16C6x (PIC16C65A) |
| Architecture | 8-bit RISC, Harvard |
| Instruction Set | 35 single-word instructions, 14-bit word |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 192 bytes |
| EEPROM Data Memory | None (no on-chip data EEPROM) |
| 最大时钟频率 | 4 MHz (-04 speed grade) |
| Instruction Cycle Time | 1 us @ 4 MHz (4 x Tosc) |
| Operating Voltage Range | 2.5 V to 6.0 V |
| 工作温度范围 | -40 C to +85 C (Industrial, -I suffix) |
| Number of I/O Pins | 33 |
| Timers | 3 (TMR0, TMR1, TMR2) |
| ADC | 5 channels, 8-bit |
| Serial Communications | USART (UART), SSP (SPI/I2C) |
| Parallel Slave Port | 8-bit PSP on PORTD/PORTE |
| Watchdog Timer | Yes, on-chip dedicated RC oscillator |
| 封装 | 40-pin PDIP (DIP-40), 15.24 mm width |
| 安装类型 | Through-Hole |
| RoHS 状态 | Compliant per Microchip product page |
PIC16C65A-04I/P 引脚配置
| 引脚 1 | MCLR/Vpp — Master Clear (Reset) input / programming voltage |
| 引脚 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| 引脚 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| 引脚 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| 引脚 5 | RA3/AN3/Vref+ — PORTA bit 3 / Analog input 3 / ADC Vref+ |
| 引脚 6 | RA4/TOCKI — PORTA bit 4 / Timer0 clock input |
| 引脚 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI Slave Select |
| 引脚 8 | RE0/RD/AN5 — PORTE bit 0 / Parallel slave port read / Analog input 5 |
| 引脚 9 | RE1/WR/AN6 — PORTE bit 1 / Parallel slave port write / Analog input 6 |
| 引脚 10 | RE2/CS/AN7 — PORTE bit 2 / Parallel slave port chip select / Analog input 7 |
| 引脚 11 | VDD — Positive supply (2.5V to 6.0V) |
| 引脚 12 | VSS — Ground reference |
| 引脚 13 | OSC1/CLKIN — Oscillator input / external clock input |
| 引脚 14 | OSC2/CLKOUT — Oscillator output / clock output |
| 引脚 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| 引脚 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 module |
| 引脚 17 | RC2/CCP1 — PORTC bit 2 / CCP1 module |
| 引脚 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| 引脚 19 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| 引脚 20 | RC5/SDO — PORTC bit 5 / SPI data out |
| 引脚 21 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| 引脚 22 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| 引脚 23 | RD0/PSP0 — PORTD bit 0 / Parallel slave port data bit 0 |
| 引脚 24 | RD1/PSP1 — PORTD bit 1 / Parallel slave port data bit 1 |
| 引脚 25 | RD2/PSP2 — PORTD bit 2 / Parallel slave port data bit 2 |
| 引脚 26 | RD3/PSP3 — PORTD bit 3 / Parallel slave port data bit 3 |
| 引脚 27 | RD4/PSP4 — PORTD bit 4 / Parallel slave port data bit 4 |
| 引脚 28 | RD5/PSP5 — PORTD bit 5 / Parallel slave port data bit 5 |
| 引脚 29 | RD6/PSP6 — PORTD bit 6 / Parallel slave port data bit 6 |
| 引脚 30 | RD7/PSP7 — PORTD bit 7 / Parallel slave port data bit 7 |
| 引脚 31 | VSS — Ground reference (second Vss pin) |
| 引脚 32 | VDD — Positive supply (second Vdd pin) |
| 引脚 33 | RB0/INT — PORTB bit 0 / external interrupt input |
| 引脚 34 | RB1 — PORTB bit 1 |
| 引脚 35 | RB2 — PORTB bit 2 |
| 引脚 36 | RB3/PGM — PORTB bit 3 / low-voltage programming input |
| 引脚 37 | RB4 — PORTB bit 4 (interrupt-on-change) |
| 引脚 38 | RB5 — PORTB bit 5 (interrupt-on-change) |
| 引脚 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| 引脚 40 | RB7/PGD — PORTB bit 7 / ICSP data |
典型应用
PIC16C65A-04I/P 适用于 6 应用s: Industrial Process Control, Automotive Body Electronics, Appliance Control Systems, Security and Access Control Panels, Legacy Embedded System Maintenance, Sensor Signal Conditioning.
Industrial Process Control
The PIC16C65A-04I/P suits industrial process control with 33 digital I/O, 5-channel 8-bit ADC, and USART connectivity. Its -40C to +85C industrial temperature rating and 2.5-6.0V supply tolerance handle factory-floor transients. The device drives relays, sensors, and indicator panels while the SSP enables I2C sensor networking.
推荐
Automotive Body Electronics
Automotive body modules (lighting controllers, seat controls, HVAC flaps) leverage the PIC16C65A-04I/P's wide 2.5-6.0V supply tolerance and -40C to +85C rating for 12V vehicle bus environments. The 33 I/O drive LED drivers and relay coils directly; the parallel slave port interfaces with dashboard controller ASICs for command handoff.
推荐
Appliance Control Systems
White-goods appliances (washing machines, dishwashers, microwave ovens) deploy the PIC16C65A-04I/P for motor control and user-interface scanning. The 5-channel ADC reads thermistor or water-level sensors; the 8-bit parallel slave port drives 7-segment displays. The DIP-40 package supports socketed field service replacement.
推荐
Security and Access Control Panels
Alarm panels, card readers, and access-control keypads use the PIC16C65A-04I/P for keypad scanning via the PORTB interrupt-on-change, sensor loop monitoring via ADC, and Wiegand/keypad UART communication through the USART. The DIP-40 footprint accommodates hand-soldered prototypes and contract-manufacturer through-hole assemblies.
推荐
Legacy Embedded System Maintenance
Field maintenance of installed-base PIC16C65A-04I/P designs requires direct replacement availability. The OTP EPROM is non-erasable, so spare PICs are programmed identically and swapped on failure. With NRND lifecycle status, sourcing channels have moved to specialty distributors and authorized Microchip franchised partners for end-of-life product support.
推荐
Sensor Signal Conditioning
Sensor front-end boards use the PIC16C65A-04I/P's 5x8-bit ADC and SSP/I2C to read multiple transducers and forward digitized data to a host. Industrial 4-20 mA loops, thermocouples via op-amp front-ends, and optical encoders via TMR0 capture are typical. The 33 I/O count accommodates matrix-scanned button panels plus actuator drivers.
推荐
推荐产品汇总
工程参考数据： PIC16C65A-04I/P ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC16C65A-04/P | PIC16C65B-04I/P | PIC16F877A-I/P | PIC16F877-04/P | PIC16C64A-04I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-40 (DIP-40) | PDIP-40 (same) | PDIP-40 (same) | PDIP-40 (same) | PDIP-40 (same) | PDIP-40 (same) |
| Program Memory | 7 KB OTP EPROM | 7 KB OTP EPROM | 7 KB OTP EPROM | 14 KB flash | 14 KB flash | 7 KB OTP EPROM |
| RAM | 192 B | 192 B | 192 B | 368 B | 368 B | 192 B |
| Max Clock | 4 MHz (-04) | 4 MHz | 4 MHz | 20 MHz | 4 MHz | 4 MHz |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| ADC | 5-ch 8-bit | 5-ch 8-bit | 5-ch 8-bit | 8-ch 10-bit | 8-ch 10-bit | 5-ch 8-bit |
| Temperature Range | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) |
| Lifecycle Status | NRND | NRND | Obsolete | Active | NRND | NRND |
关键差异点
- Industrial -40C to +85C temperature rating （对比 PIC16C65A-04/P)
- Parallel slave port for external bus interface （对比 PIC16C64A-04I/P)
- Five-channel 8-bit ADC plus USART and SSP （对比 PIC16C63A-04I/SP)
设计说明
Place a 100 nF ceramic decoupling capacitor within 5 mm of each Vdd/Vss pin pair (pins 11/12 and 31/32). The PIC16C65A-04I/P draws approximately 15 uA typical at 5V/4 MHz and 1 uA typical at 3V/32 kHz, but transient current during ADC conversion can exceed 5 mA. Bulk decoupling (10 uF tantalum) is recommended when the supply source impedance is high. The MCLR pin requires a 10-50 kohm pull-up to Vdd for reliable reset; a diode to Vdd is suggested when using RC MCLR circuits to prevent negative transients.
OTP EPROM cannot be erased or reprogrammed; verify firmware in a windowed CERDIP sample before committing production volume. Configuration bits (oscillator, watchdog, code protect, brown-out) are programmed with the code and cannot be selectively erased. Brown-out reset should always be enabled for industrial applications to prevent code corruption during supply dips. The -04 speed grade means oscillator frequency must not exceed 4 MHz; do not substitute -20 silicon without also updating the oscillator and ADC clock divisor.
Route the analog AVdd/AVss (shared with digital Vdd/Vss on the PIC16C65A-04I/P) to a star ground topology to minimize ADC noise coupling. Keep analog input traces short and away from the OSC2 clock output. The parallel slave port pins (RD0-RD7, RE0-RE2) should be length-matched if used as an external bus at speeds above 1 MHz. The PORTB interrupt-on-change feature requires no external components but the corresponding TRISB bits must be configured as inputs and the IOC register enabled in software.
合规信息
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; consult Microchip for automotive-grade PIC16 alternatives. Lifecycle NRND (Not Recommended for New Designs) per Microchip.
