PIC16C65A-20E/L - 8-Bit 20MHz OTP MCU 7KB Flash | Microchip | PLCC-44
料号： PIC16C65A-20E/L ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $8.94 | $89.40 |
| 100 | $7.62 | $762.00 |
| 500 | $6.85 | $3,425.00 |
| 1,000 | $6.2 | $6,200.00 |
PIC16C65A-20E/L 概述
An 8-bit microcontroller is a single-chip computer that integrates a CPU, memory, and I/O peripherals on a single silicon die. The PIC16CXX family is built around a RISC (Reduced Instruction Set Computer) Harvard architecture that executes 35 single-word instructions, with all instructions completing in one instruction cycle except program branches (two cycles). Within the broader taxonomy, PIC16C65A sits at: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC. This MCU category bridges discrete logic and full microprocessors, enabling dedicated control functions in cost-sensitive embedded systems.
Key features include 20MHz maximum operating frequency, support for I2C, SPI, and UART/USART serial connectivity, low-power CMOS EPROM/ROM technology with 5V/4MHz typical current of 15uA and 3V/32kHz typical current of 1uA, and a wide operating voltage range up to 6.0V. The PIC16C65A's Harvard architecture separates program and data memory buses, allowing instruction fetch and operand access to occur in parallel - improving throughput compared with single-cored-memory CISC designs of equivalent clock speed.
Typical applications include industrial control systems, automotive body and chassis electronics (AEC-Q100 not formally qualified on this part number; consult -I or -E temp grade parts), consumer appliance controllers, and embedded serial-communication hubs. The 33-pin I/O count and three serial peripherals make it well suited as a bridging controller between UART-based host processors and SPI/I2C sensor clusters.
When designing with the PIC16C65A-20E/L, ensure oscillator start-up time is respected for crystal or resonator circuits and that decoupling capacitors are placed within 5mm of VDD/VSS pins. OTP memory cannot be re-programmed; choose a flash-based PIC16F equivalent if in-field firmware updates are required.
直接替换替代料： PIC16C65A-20E/L ——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-20E/L （相同外形与封装尺寸） ——差异在于 Package, Program Memory Size, Core Architecture, Maximum Clock Frequency, Program Memory Type.
快速对比工具——选择替代料号进行并排对比：
PIC16C65A-20/L
✅ 直接替换📋 参考替代料（不在目录中）
PIC16C65A-04E/L
✅ 直接替换✓ 有现货
$11.2 / 个
查看数据手册 →PIC16C65A-04/P
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$8.1 / 个
查看数据手册 →PIC16C65A-04I/P
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.25 / 个
查看数据手册 →PIC16C65A-10/PQ
✅ 直接替换✓ 有现货
$6.1 / 个
查看数据手册 →PIC16C65A-20E/L 最大额定值与电气特性
| Core Architecture | 8-bit RISC (Harvard) |
| Instruction Set | 35 single-word instructions |
| Program Memory | 7 KB (4K x 14) OTP |
| RAM | 192 bytes |
| 最大时钟频率 | 20 MHz |
| Operating Voltage Range | 2.5 V to 6.0 V |
| I/O Pins | 33 |
| 封装 | 44-pin PLCC (16.59 x 16.59 mm) |
| 安装类型 | Surface Mount |
| Serial Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Typical Current at 5V/4MHz | 15 uA |
| Typical Current at 3V/32kHz | 1 uA |
| Temperature Grade | Extended (-40C to +125C) |
PIC16C65A-20E/L 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 / voltage reference |
| 引脚 6 | RA4/T0CKI — PORTA bit 4 / Timer 0 clock input |
| 引脚 7 | RA5/SS/AN4 — PORTA bit 5 / SPI slave select / analog input 4 |
| 引脚 8 | RE0/RD/AN5 — PORTE bit 0 / read control / analog input 5 |
| 引脚 9 | RE1/WR/AN6 — PORTE bit 1 / write control / analog input 6 |
| 引脚 10 | RE2/CS/AN7 — PORTE bit 2 / chip select / analog input 7 |
| 引脚 11 | VDD — Positive supply voltage |
| 引脚 12 | VSS — Ground reference |
| 引脚 13 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| 引脚 14 | OSC2/CLKOUT — Oscillator crystal 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 / Capture-Compare-PWM 2 |
| 引脚 17 | RC2/CCP1 — PORTC bit 2 / Capture-Compare-PWM 1 |
| 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 / UART transmit / USART clock |
| 引脚 22 | RC7/RX/DT — PORTC bit 7 / UART receive / USART data |
| 引脚 23 | RB0/INT — PORTB bit 0 / external interrupt |
| 引脚 24 | RB1 — PORTB bit 1 |
| 引脚 25 | RB2 — PORTB bit 2 |
| 引脚 26 | RB3/PGM — PORTB bit 3 / low-voltage programming |
| 引脚 27 | RB4 — PORTB bit 4 |
| 引脚 28 | RB5 — PORTB bit 5 |
| 引脚 29 | RB6/PGC — PORTB bit 6 / ICSP clock |
| 引脚 30 | RB7/PGD — PORTB bit 7 / ICSP data |
| 引脚 31 | VSS — Ground reference |
| 引脚 32 | RD0 — PORTD bit 0 |
| 引脚 33 | RD1 — PORTD bit 1 |
| 引脚 34 | RD2 — PORTD bit 2 |
| 引脚 35 | RD3 — PORTD bit 3 |
| 引脚 36 | RD4 — PORTD bit 4 |
| 引脚 37 | RD5 — PORTD bit 5 |
| 引脚 38 | RD6 — PORTD bit 6 |
| 引脚 39 | RD7 — PORTD bit 7 |
| 引脚 40 | VSS — Ground reference (PLCC exposed pad) |
| 引脚 41 | VSS — Ground reference |
| 引脚 42 | VSS — Ground reference |
| 引脚 43 | VSS — Ground reference |
| 引脚 44 | NC — Not connected (per datasheet pinout) |
典型应用
PIC16C65A-20E/L 适用于 6 应用s: Industrial Process Control, Serial Communication Bridging Hub, Consumer Appliance Controller, Automotive Body Electronics (Non-Safety), Embedded Sensor Array Interface, Vintage Computing Peripheral Controller.
Industrial Process Control
The PIC16C65A-20E/L is a strong fit for industrial process control systems requiring deterministic 8-bit computation in harsh environments. The 'E' suffix confirms an extended -40C to +125C temperature grade that tolerates factory floor heat near motors and drives. With 20 MIPS throughput, the device can sample analog inputs, run PID control loops, and drive PWM outputs to valves or motor controllers in real time. Integrated Brown-out Detect/Reset and Watchdog Timer protect against supply glitches and firmware lockups - both critical failure modes in unattended industrial installations. The 33 I/O pins handle digital sensors, keypad inputs, and relay outputs without external logic.
推荐
Serial Communication Bridging Hub
The PIC16C65A-20E/L excels as a serial protocol bridge between UART, SPI, and I2C peripherals. With all three serial channels integrated, the MCU converts between asynchronous UART traffic from a host processor and synchronous SPI/I2C sensors or displays - eliminating external bridge ICs. The 192-byte RAM is sufficient for buffering modest message frames, while 7KB of OTP program memory holds protocol stacks for typical industrial or consumer bridging applications. At 20 MHz, the core can sustain 115200 bps UART traffic plus SPI transactions at 5 MHz without CPU overload.
推荐
Consumer Appliance Controller
Consumer appliances such as washing machines, dishwashers, and HVAC indoor units benefit from the PIC16C65A-20E/L's combination of low cost, OTP memory, and integrated peripherals. The 33 I/O pins drive segment displays, keypads, relays, and triac-fired motor loads directly. Brown-out Detect/Reset handles noisy rectified mains rails, while the Watchdog Timer recovers from firmware lockups caused by EMI from switching solenoids. OTP memory prevents end users from tampering with appliance firmware - a security advantage over flash-based parts in this market segment.
推荐
Automotive Body Electronics (Non-Safety)
Non-safety automotive body electronics - such as seat controllers, mirror adjusters, climate control panels, and interior lighting - are well served by the PIC16C65A-20E/L. The extended -40C to +125C temperature grade survives cabin and under-hood thermal cycling, while OTP memory locks the firmware to prevent unauthorized modification of body-controller behavior. The PWM peripheral drives LED dimmers and small motor loads, while UART/SPI/I2C connectivity links to body-domain CAN/LIN gateways. Note: this part number is not formally AEC-Q100 qualified - validate with Microchip for safety-critical body applications.
推荐
Embedded Sensor Array Interface
The PIC16C65A-20E/L acts as a sensor hub in embedded systems where multiple I2C/SPI sensors must be polled and aggregated for a host processor. The 33 I/O pins accept interrupt lines from sensor clusters, while the SPI channel interfaces to high-speed accelerometers or gyroscopes. The 7KB OTP program memory accommodates sensor drivers and a basic data-routing protocol stack. At 20 MHz, the device can poll up to 10 I2C sensors at 400 kHz while maintaining a 115200 bps UART uplink to a host - useful in robotics and IoT edge nodes.
推荐
Vintage Computing Peripheral Controller
Retro-computing enthusiasts and restoration projects benefit from the PIC16C65A-20E/L as a programmable peripheral controller. The PIC16C family was contemporary with late-1980s and 1990s industrial computing equipment, making this OTP part historically appropriate for repairing legacy systems that demand period-correct silicon. The UART/SPI peripherals can emulate older serial protocols or interface modern SD card readers to vintage CPUs, while the 20 MHz clock matches the era's mid-range controller performance envelope.
推荐
推荐产品汇总
工程参考数据： PIC16C65A-20E/L ——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-20/L | PIC16C65A-04E/L | PIC16C65A-10/PQ | PIC16C65A-04/P | PIC16C65A-04I/P |
|---|---|---|---|---|---|---|
| Package | 44-PLCC (L) | 44-PLCC (L) - same | 44-PLCC (L) - same | 44-PLCC (L) - same | DIP-40 - cross-package | DIP-40 - cross-package |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 4 MHz | 10 MHz | 4 MHz | 4 MHz |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP |
| Temperature Grade | Extended (-40C to +125C) | Commercial (0C to +70C) | Extended (-40C to +125C) | Commercial (0C to +70C) | Commercial (0C to +70C) | Industrial (-40C to +85C) |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| Serial Peripherals | UART, SPI, I2C | UART, SPI, I2C | UART, SPI, I2C | UART, SPI, I2C | UART, SPI, I2C | UART, SPI, I2C |
| Memory Type | OTP (one-time programmable) | OTP | OTP | OTP | OTP | OTP |
关键差异点
- Extended temperature grade for industrial and harsh-environment deployments （对比 PIC16C65A-20/L)
- Maximum 20 MHz throughput for compute-intensive control loops （对比 PIC16C65A-04E/L)
- Three integrated serial peripherals in a single MCU （对比 PIC16C65A-04/P (DIP-40 variant))
设计说明
Estimated: at 20 MHz and 5V VDD, the PIC16C65A core draws approximately 15 mA plus I/O pin current. Total system current is dominated by I/O loading rather than core consumption for OTP CMOS MCUs in this family. Place a 100 nF decoupling capacitor within 5 mm of VDD (pin 11) and VSS (pin 12), plus a bulk 10 uF tantalum or ceramic capacitor on the same rail. Multiple VSS pins on the PLCC package should all be connected to a low-impedance ground plane.
For crystal or ceramic resonator operation, connect a fundamental-mode 20 MHz resonator between OSC1 (pin 13) and OSC2 (pin 14) with appropriate load capacitors per the resonator manufacturer's datasheet (typically 15-33 pF). For external clock input, drive OSC1 directly and leave OSC2 floating. LP, XT, HS, and RC oscillator modes are selected by configuration fuse bits - HS mode is required for 20 MHz operation.
OTP memory on the PIC16C65A can be programmed only once - there is no in-field firmware upgrade path. If you need to iterate firmware, evaluate the flash-based PIC16F74 in the same 44-PLCC footprint. Also note that the MCLR pin (pin 1) requires a proper reset circuit; a 10 kohm pull-up to VDD with optional 100 nF capacitor to ground provides noise-immune reset behavior. Brown-out Detect must be enabled in the configuration word to protect against supply droop.
The PIC16C65A in PLCC-44 has moderate power dissipation; at full I/O load and 20 MHz operation, internal dissipation typically stays under 200 mW - well within the PLCC's thermal envelope. However, ensure the ground plane under the PLCC exposed pad is unbroken for thermal spreading. No external heatsink is required for normal operation. Maximum junction temperature is 150C; respect this limit when designing for high ambient industrial environments.
合规信息
RoHS and REACH compliance not explicitly stated in verified distributor listings reviewed. PIC16C family parts were originally released before RoHS became mandatory for many applications; later production runs are typically lead-free but should be verified with Microchip's environmental compliance documentation. This part number is not formally AEC-Q100 qualified - the 'E' suffix denotes extended temperature grade only, not automotive qualification. For AEC-Q100 qualified PIC16 alternatives, refer to PIC16F variants with the '-IQ' automotive designation.
