PIC16F627A-I/P - 8-bit Flash MCU, 1.75KB, 20MHz | Microchip
MPN： PIC16F627A-I/P ✓ 啟用中PIC16F627A-I/P 概覽
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, and peripherals on one die. PIC16F-series MCUs sit in the hierarchy: 8-bit microcontroller -> embedded controller -> semiconductor IC -> integrated circuit. The PIC16F627A combines RISC architecture with nanoWatt power management, fitting between Microchip's baseline PIC10/12 families and the mid-range PIC18 series, making it a workhorse for cost-sensitive embedded designs.
Key features include a 4 MHz internal oscillator, 16 I/O pins, a USART for asynchronous serial communication, a Capture/Compare/PWM (CCP) module, two analog comparators, and a programmable voltage reference. Operating voltage spans 4.5 V to 5.5 V with industrial temperature range -40 °C to +85 °C. The integrated peripherals eliminate many external components, reducing BOM cost and board area.
The PIC16F627A uses Harvard architecture with separate program and data buses, delivering deterministic 200 ns instruction execution at 20 MHz. The CMOS Flash process supports in-circuit serial programming (ICSP) and nanoWatt power management for low-power sleep modes - critical for battery applications. It is pin-compatible with the PIC16F628A which doubles the Flash to 3.5 KB.
Typical applications include automotive and industrial analog/integrated level controls, appliance controls, consumer electronics, and remote sensor nodes. The integrated analog peripherals make it ideal for level detection, motor control feedback, and SMPS support circuits.
When designing with this part, ensure decoupling with a 100 nF capacitor close to VDD and consider using the internal 4 MHz oscillator to reduce external component count. Programming requires a PICkit or ICD debugger compatible with the mid-range PIC16F family.
This page synthesizes distributor pricing, drop-in compatible alternatives, and practical design notes not found in the standalone manufacturer datasheet, helping engineers select the right PIC16F variant for their application.
直接替換替代品，適用於 PIC16F627A-I/P — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC16F627A-I/P （相同外形與佔位） — 差異在於 Package, Timers, Core Architecture, Program Memory Type, Program Memory Size.
PIC16F628A-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16F627A-I/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16F627A-E/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16F627-20I/P
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16F627A-E/ML
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16F88-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16F627A-I/P 最大額定值與電氣特性
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Program Memory | 1.75 KB (1K x 14) Flash |
| Data EEPROM | 128 bytes |
| RAM | 224 bytes |
| Maximum CPU Speed | 20 MHz |
| Instruction Execution Time | 200 ns |
| Instruction Set | 35 single-word instructions |
| Internal Oscillator | 4 MHz |
| I/O Pins | 16 |
| Supply Voltage (VDD) | 4.5 V to 5.5 V |
| 工作溫度 | -40 °C to +85 °C (Industrial) |
| 封裝 | 18-pin PDIP (0.300", through-hole) |
| Peripherals | USART, 1x CCP, 2 Comparators, Programmable VREF |
| 安裝類型 | Through-Hole (DIP) |
| RoHS 狀態 | Lead-free per product description |
PIC16F627A-I/P 腳位配置
| 腳位 1 | RA2/AN2/VREF — Bidirectional I/O, analog input, or VREF output |
| 腳位 2 | RA3/AN3/CMP1 — Bidirectional I/O, analog input, comparator 1 output |
| 腳位 3 | RA4/T0CKI/CMP2 — Bidirectional I/O, Timer0 clock input, comparator 2 output |
| 腳位 4 | RA5/MCLR/VPP — Bidirectional I/O, Master Clear (reset) input, programming voltage |
| 腳位 5 | VSS — Ground reference |
| 腳位 6 | RB0/INT — Bidirectional I/O, external interrupt input |
| 腳位 7 | RB1/RX/DT — Bidirectional I/O, USART RX or synchronous data |
| 腳位 8 | RB2/TX/CK — Bidirectional I/O, USART TX or synchronous clock |
| 腳位 9 | RB3/CCP1 — Bidirectional I/O, Capture/Compare/PWM output |
| 腳位 10 | RB4/PGM — Bidirectional I/O, low-voltage programming input |
| 腳位 11 | RB5 — Bidirectional I/O |
| 腳位 12 | RB6/T1OSO/T1CKI/PGC — Bidirectional I/O, Timer1 oscillator or ICSP clock |
| 腳位 13 | RB7/T1OSI/PGD — Bidirectional I/O, Timer1 oscillator input or ICSP data |
| 腳位 14 | VDD — Positive supply voltage (4.5 V to 5.5 V) |
| 腳位 15 | OSC2/CLKOUT/RA6 — Oscillator output, Fosc/4 clock output, or I/O |
| 腳位 16 | OSC1/CLKIN/RA7 — Oscillator input, external clock input, or I/O |
| 腳位 17 | RA0/AN0 — Bidirectional I/O, analog input channel 0 |
| 腳位 18 | RA1/AN1 — Bidirectional I/O, analog input channel 1 |
典型應用
PIC16F627A-I/P 適用於 6 應用s: Industrial Control & Sensor Interface, Appliance Control (White Goods), Automotive Subsystems (Non-Safety), Remote Sensor / Battery-Powered Nodes, Consumer Electronics & HMI, SMPS Support & Power Management Auxiliary.
Industrial Control & Sensor Interface
The PIC16F627A-I/P fits industrial control applications through its 16 I/O pins, integrated comparators, and programmable voltage reference for analog level detection. With 224 bytes of RAM and 1.75 KB Flash, it handles PID loops, switch debouncing, and sensor conditioning while the USART links to industrial networks. The 4 MHz internal oscillator eliminates external crystals, reducing BOM cost in factory automation, motor starters, and process controllers. Industrial temperature grade -40C to +85C and 20 MHz operation support harsh-environment designs.
推薦
Appliance Control (White Goods)
The PIC16F627A-I/P serves as the main controller in white goods like washing machines, dishwashers, and microwave ovens. Its integrated CCP module drives TRIAC phase-angle control for heating elements and motor speed regulation, while the two comparators handle zero-crossing detection and overcurrent protection. The 1.75 KB Flash accommodates user-interface state machines and timing profiles. nanoWatt power management extends battery life in cordless appliances, and the 5 V operation aligns with rectified mains supplies.
推薦
Automotive Subsystems (Non-Safety)
In non-safety automotive subsystems such as interior lighting, window lifters, and seat controllers, the PIC16F627A-I/P provides integrated level controls with 2 comparators and a programmable VREF. Its 20 MHz CPU supports LIN protocol stacks via the USART for body electronics networks. While not AEC-Q100 qualified, the part is widely used in cost-sensitive body electronics with extended-temperature variants. Low power-down current via nanoWatt technology suits battery-backed accessory modules.
推薦
Remote Sensor / Battery-Powered Nodes
The PIC16F627A-I/P fits remote wireless sensor nodes thanks to its nanoWatt power management modes, achieving microamp sleep currents for multi-year battery life. The 4 MHz internal oscillator reduces part count, while the USART interfaces with low-cost RF modules like the MRF89XA sub-GHz transceiver. The integrated comparators wake the MCU from sleep when sensor thresholds are crossed. Industrial temperature range supports outdoor environmental monitoring, smart agriculture, and utility metering edge devices.
推薦
Consumer Electronics & HMI
The PIC16F627A-I/P powers cost-sensitive consumer HMI products such as remote controls, toys, and small appliances. Its 16 I/O drive LED matrix displays, keypads, and IR receivers, while the USART handles wireless or wired remote links. The CCP module generates PWM for LED dimming and motor control. With 200 ns instruction execution, it produces accurate IR protocols and audio tones. 1.75 KB Flash accommodates product variants and feature flags in consumer firmware, with easy in-circuit reprogramming for end-of-line customization.
推薦
SMPS Support & Power Management Auxiliary
The PIC16F627A-I/P serves as a digital supervisor in switch-mode power supplies, handling housekeeping tasks like fan control, fault logging, and housekeeping communication. Its programmable VREF and comparators support primary-side regulation and overvoltage/overcurrent protection. The 20 MHz core executes digital compensation algorithms and interfaces with main controllers via USART or GPIO. Industrial temperature range and robust PDIP packaging suit the harsh thermal environment near power MOSFETs and magnetics.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16F627A-I/P — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC16F628A-I/P | PIC16F627A-I/SO | PIC16F627A-E/P | PIC16F88-I/P |
|---|---|---|---|---|---|
| Package | 18-pin PDIP (0.300") | 18-pin PDIP (0.300") - same | 18-pin SOIC - different | 18-pin PDIP (0.300") - same | 18-pin PDIP (0.300") - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 1.75 KB | 3.5 KB | 1.75 KB (same) | 1.75 KB (same) | 7 KB |
| RAM | 224 bytes | 224 bytes (same) | 224 bytes (same) | 224 bytes (same) | 368 bytes |
| EEPROM | 128 bytes | 128 bytes (same) | 128 bytes (same) | 128 bytes (same) | 256 bytes |
| Maximum CPU Speed | 20 MHz | 20 MHz (same) | 20 MHz (same) | 20 MHz (same) | 20 MHz (same) |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V (same) | 4.5 V to 5.5 V (same) | 4.5 V to 5.5 V (same) | 4.5 V to 5.5 V (same) |
| Operating Temperature | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +125 °C (Extended) | -40 °C to +85 °C |
| USART | Yes | Yes | Yes | Yes | Yes (with AUSART) |
| ADC | No (comparators only) | No (comparators only) | No (comparators only) | No (comparators only) | 10-bit ADC, 7 channels |
| Internal Oscillator | 4 MHz | 4 MHz (same) | 4 MHz (same) | 4 MHz (same) | 8 MHz (selectable) |
| Unit Price (qty 1) | $2.92 | ~$3.10 | ~$2.85 | ~$3.40 | ~$3.50 |
主要差異化特點
- Higher Flash density in pin-compatible footprint (對比PIC16F627A-I/SO)
- Extended temperature range option in same footprint (對比PIC16F627A-E/P)
- Drop-in upgrade path with more Flash memory (對比PIC16F628A-I/P)
- ADC-less design with analog comparators (對比PIC16F88-I/P)
設計說明
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 14) with a short, wide trace to VSS (pin 5). For improved noise immunity in industrial environments, add a bulk 10 uF tantalum or aluminum electrolytic capacitor near the MCU. The PIC16F627A-I/P operates from 4.5 V to 5.5 V; for 3.3 V systems, use the PIC16LF627A variant instead.
Route the MCLR/VPP pin (pin 4) to a dedicated reset circuit with a 10 kohm pull-up to VDD and a 100 nF capacitor to VSS for hardware reset. If using ICSP, place a 4.7 kohm resistor in series on the PGD/PGC lines to allow in-circuit programming without removing the MCU. Keep oscillator traces short and surround with ground pour to minimize EMI emissions.
Do not assume PIC16F627A firmware is binary-compatible with PIC16F628A - while the peripherals match, the Flash size differs and the device ID is distinct for programming tools. Verify the CONFIG bits (oscillator, watchdog, brown-out, code protection) match your application; incorrect CONFIG can lock the part or prevent ICSP. Also confirm the analog comparator outputs (C1OUT/C2OUT) are disabled if not used, to free the pins for general I/O.
Estimated: At 20 MHz and 5.5 V supply, the PIC16F627A-I/P draws approximately 10 mA active and 1 uA sleep. Power dissipation is below 60 mW even at maximum active current, well within the PDIP package thermal limits. No heatsink is required, but ensure ambient temperature stays within the industrial -40 °C to +85 °C range.
合規資訊
RoHS compliant per distributor product descriptions. Industrial temperature grade only - not AEC-Q100 qualified for automotive safety applications.
