PIC16F627-04/SO - 8-bit 4MHz 1.75KB Flash MCU 18-SOIC | Microchip
料号： PIC16F627-04/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.16 | $3.16 |
| 10 | $2.85 | $28.50 |
| 100 | $2.4 | $240.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.85 | $1,850.00 |
PIC16F627-04/SO 概述
An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip that combines a CPU, RAM, Flash/ROM program memory, and peripherals such as timers, ADC, and I/O ports on a single die. MCUs sit at the top of the embedded computing hierarchy: microcontroller -> embedded processor -> semiconductor IC. The PIC16F62X family's mid-range 14-bit instruction word places it between PIC10/12/14 baseline (12-bit) and PIC18 enhanced (16-bit) cores, balancing code density, peripheral richness, and ease of programming.
Key features include 224 bytes of RAM, 128 bytes of EEPROM data memory, 16 digital I/O pins, two 8-bit timers plus one 16-bit timer, a 10-bit ADC (multiplexed with comparator inputs), a USART module, an internal 4 MHz oscillator, and a comparator with voltage reference. The 4 MHz speed grade is indicated by the "-04" suffix; an "-20" suffix part runs up to 20 MHz. Brown-out reset (BOR), power-on reset (POR), and watchdog timer (WDT) provide robust field deployment.
Architecturally, the PIC16F627 implements a Harvard bus with separate program and data paths, allowing instruction fetch and data access to overlap, which is why one cycle per instruction is achievable. The 14-bit instruction width is wider than baseline PIC cores, giving more addressing modes and richer peripheral control in a single opcode. The 18-SOIC package offers 0.295 inch (7.50 mm) body width with gull-wing leads for surface-mount assembly.
Typical applications include consumer appliances, low-end remote controls, sensor signal conditioning, LED driving, battery chargers, automotive body controllers, and industrial control. The on-chip peripherals make it well suited to standalone "sense, decide, act" tasks that do not need higher-end 32-bit MCUs.
When designing with this part, place decoupling capacitors (100 nF plus 10 uF) within a few millimeters of VDD/VSS, route the MCLR pin through a 10 kohm pull-up if not used as a reset, and verify the configuration word matches the chosen oscillator mode. Industrial and automotive designs should consider the PIC16F627-04I/SO (extended temperature) or PIC16F628A variant for 20 MHz operation.
This page synthesizes distributor stock levels, drop-in same-package alternatives, pricing tiers, and practical design notes for the PIC16F627-04/SO - data not consolidated on a single manufacturer or distributor page.
直接替换替代料： PIC16F627-04/SO ——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： PIC16F627-04/SO （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, Core Architecture, Internal Oscillator, Timers.
快速对比工具——选择替代料号进行并排对比：
PIC16F628-04/SO
✅ 直接替换✓ 有现货
$1.05 / 个
查看数据手册 →PIC16F627-04I/SO
✅ 直接替换✓ 有现货
$1.59 / 个
查看数据手册 →PIC16F627-04/P
✅ 直接替换✓ 有现货
$2.05 / 个
查看数据手册 →PIC16F627-20/SO
✅ 直接替换✓ 有现货
$1.83 / 个
查看数据手册 →PIC16F628A-I/SO
✅ 直接替换✓ 有现货
$2.32 / 个
查看数据手册 →PIC16F627-04/SO 最大额定值与电气特性
| Product Family | PIC16F62X (mid-range, 14-bit instruction) |
| Core | 8-bit PIC RISC (Harvard architecture) |
| Instruction Set | 35 single-word instructions |
| Instruction Execution Time | 200 ns at 4 MHz |
| Program Memory (Flash) | 1.75 KB (1K x 14) |
| Data RAM | 224 bytes |
| Data EEPROM | 128 bytes |
| Maximum Clock Speed | 4 MHz (speed grade -04) |
| Supply Voltage (VDD) | 3.0 V to 5.5 V |
| I/O Pins | 16 digital I/O |
| Timers | 2x 8-bit + 1x 16-bit |
| ADC | 10-bit (multiplexed with comparator) |
| USART | Yes (1 module) |
| Internal Oscillator | 4 MHz |
| Watchdog Timer | Yes (WDT) |
| Brown-out Reset / POR | Yes (BOR + POR) |
| 封装 | 18-pin SOIC (SOIC-18, 0.295 inch / 7.50 mm body) |
| 安装类型 | Surface Mount (gull-wing leads) |
| RoHS 状态 | ROHS3 Compliant |
PIC16F627-04/SO 引脚配置
| 引脚 1 | RA2/AN2/CVREF — GPIO RA2 / ADC ch2 / comparator voltage reference output |
| 引脚 2 | RA3/AN3/CMP1 — GPIO RA3 / ADC ch3 / comparator 1 output |
| 引脚 3 | RA4/AN4/T0CKI — GPIO RA4 / ADC ch4 / Timer0 clock input |
| 引脚 4 | RA5/MCLR/VPP — Master Clear reset (active low) / programming voltage input |
| 引脚 5 | VSS — Ground reference |
| 引脚 6 | RB0/INT — GPIO RB0 / external interrupt input |
| 引脚 7 | RB1/RX/DT — GPIO RB1 / USART RX (asynchronous) / data (synchronous) |
| 引脚 8 | RB2/TX/CK — GPIO RB2 / USART TX / clock (synchronous) |
| 引脚 9 | RB3/CCP1 — GPIO RB3 / Capture/Compare/PWM 1 output |
| 引脚 10 | RB4/PGM — GPIO RB4 / LVP programming entry |
| 引脚 11 | RB5 — GPIO RB5 |
| 引脚 12 | RB6/T1OSO/PGC — GPIO RB6 / Timer1 oscillator output / ICD clock |
| 引脚 13 | RB7/T1OSI/PGD — GPIO RB7 / Timer1 oscillator input / ICD data |
| 引脚 14 | VDD — Positive supply voltage (3.0 V to 5.5 V) |
| 引脚 15 | OSC2/CLKOUT/RA6 — Crystal output / Fosc/4 clock output / GPIO RA6 |
| 引脚 16 | OSC1/CLKIN/RA7 — Crystal input / external clock input / GPIO RA7 |
| 引脚 17 | RA0/AN0 — GPIO RA0 / ADC channel 0 |
| 引脚 18 | RA1/AN1 — GPIO RA1 / ADC channel 1 |
典型应用
PIC16F627-04/SO 适用于 6 应用s: Consumer Appliance Control, Remote Control and IR Transmitter, Battery Charger Controller, Sensor Signal Conditioning Node, Automotive Body Controller, LED Driver and Lighting Controller.
Consumer Appliance Control
The PIC16F627-04/SO fits consumer appliance control (coffee makers, microwave user interfaces, washing-machine keypads) because of its 4 MHz RISC core, 16 digital I/O lines, and 1.75 KB Flash that comfortably holds small state-machine firmware. The internal 4 MHz oscillator eliminates external crystal cost, while the 224-byte RAM supports simple menu state tables. The 18-SOIC surface-mount package simplifies high-volume automated assembly. With 5 V tolerance on most pins and a 10-bit ADC available, the same MCU reads front-panel buttons, drives LED indicators, and triacs the heater relay without external glue logic.
推荐
Remote Control and IR Transmitter
Low-cost IR remote controls pair naturally with the PIC16F627-04/SO because the 4 MHz core easily generates 38 kHz carrier PWM for RC5/ NEC protocols while leaving headroom for button-scanning firmware. The 224-byte RAM fits up to ~30-key matrix state and transmit buffers; the on-chip USART is unused but the timer/capture modules produce precise carrier timing. The 18-SOIC footprint is small enough for slim remote PCBs, and the 3.0-5.5 V supply matches single CR2032 or 2xAA battery rails. Power-down sleep currents (low microamps typical) preserve battery life across years of standby.
推荐
Battery Charger Controller
Small sealed lead-acid (SLA) and NiMH chargers use the PIC16F627-04/SO as a charge-state supervisor, taking advantage of the 10-bit ADC to measure battery voltage and current. The on-chip comparator with programmable voltage reference provides a hardware-based end-of-charge detect independent of the firmware, increasing robustness. The 35-instruction RISC core runs the CC-CV algorithm easily within 1.75 KB Flash; the 128-byte EEPROM stores calibration constants and last-state memory across power cycles. The wide 3.0-5.5 V supply allows direct connection to a 4-cell NiMH pack without an extra LDO.
推荐
Sensor Signal Conditioning Node
Industrial sensor nodes use the PIC16F627-04/SO to read thermocouples, RTDs, or analog transducers, perform linearization in firmware, and forward results via the on-chip USART to a host PLC or gateway. The 16-bit timer delivers precise ADC-trigger intervals for 50/60 Hz line-noise rejection via oversampling. The 18-SOIC industrial-rated /04I variant extends operating range to -40 C to +85 C, suitable for factory-floor enclosures. Compared with bare op-amp signal chains, this MCU-based node is cheaper, more flexible, and self-calibrating.
推荐
Automotive Body Controller
Automotive interior-body modules (window lift switches, mirror controls, simple LED tail-lamps) historically rely on the PIC16F627-04/SO because of its small 18-SOIC footprint and 16 I/O lines. The MCU reads mechanical switches, drives MOSFET gates via PWM, and runs LIN-stack firmware on the USART for sub-bus communication. Automotive-grade cousins (PIC16F627-04I/SO and the Q-grade PIC16F627 variants) extend temperature to -40 C to +125 C and add AEC-Q100 qualification where required. The 1.75 KB Flash fits LIN 1.3 slave firmware comfortably.
推荐
LED Driver and Lighting Controller
RGB LED controllers, decorative lighting strips, and signage dimmers use the PIC16F627-04/SO to generate multiple PWM channels for color mixing. The two 8-bit plus one 16-bit timers provide up to three independent PWM outputs, sufficient for RGB mixing or warm-white dimming. The 10-bit ADC reads ambient-light sensors for closed-loop brightness control. The 3.0-5.5 V supply works directly from a single Li-ion cell or a 5 V USB rail, simplifying the BOM.
推荐
推荐产品汇总
工程参考数据： PIC16F627-04/SO ——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 | PIC16F628-04/SO | PIC16F627-04I/SO | PIC16F627-04/P | PIC16F627-20/SO | PIC16F628A-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-18 (0.295 inch) | SOIC-18 - same | SOIC-18 - same | DIP-18 (through-hole, same pinout) | SOIC-18 - same | SOIC-18 - same |
| Program Memory (Flash) | 1.75 KB (1K x 14) | 3.5 KB (2K x 14) | 1.75 KB (1K x 14) | 1.75 KB (1K x 14) | 1.75 KB (1K x 14) | 3.5 KB (2K x 14) |
| Maximum Clock | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz |
| Operating Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V |
| Data RAM | 224 bytes | 224 bytes | 224 bytes | 224 bytes | 224 bytes | 224 bytes |
| Temperature Grade | Commercial | Commercial | Industrial (-40C to +85C) | Commercial | Commercial | Industrial (-40C to +85C) |
| RoHS Compliance | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
关键差异点
- Compact 18-SOIC surface-mount footprint with 16 digital I/O （对比 PIC16F627-04/P (DIP-18))
- Internal 4 MHz oscillator eliminates external crystal （对比 PIC16F627-04I/SO (industrial temp))
- Wide 3.0-5.5 V supply for direct battery and 5 V rail use （对比 PIC16F628-04/SO (double Flash))
- 10-bit ADC with internal voltage reference （对比 PIC16F627-20/SO (20 MHz speed grade))
设计说明
Place a 100 nF decoupling capacitor within 5 mm of the VDD pin (pin 14) and a bulk 10 uF tantalum or aluminum capacitor on the same VDD rail. The PIC16F627-04/SO has low peak supply current during Flash programming (in-circuit serial programming) - the bulk capacitor prevents VDD droop during ICSP writes. For battery applications, the internal 4 MHz oscillator plus sleep mode (current drops to a few microamps typical) provides the lowest BOM cost without sacrificing CPU wakeup latency.
Keep the MCLR pin (pin 5) tied to VDD through a 10 kohm pull-up resistor unless external reset is desired; never leave MCLR floating. For ICSP, MCLR must be accessible and a 10 kohm (not 1 kohm) pull-up allows the ICD tool to override the line. Route the crystal traces (OSC1/OSC2, pins 16/15) short and symmetric with a ground guard ring if using an external crystal; for the internal 4 MHz oscillator these pins become RA7/RA6 GPIO. SOIC-18 land pattern follows JEDEC SO-18 standard.
Configuration-word bits must be set BEFORE code execution: oscillator mode (HS vs XT vs internal RC), watchdog enable, brown-out voltage threshold, and code-protect bits. Forgetting to set FOSC = INTRC leaves the device waiting for an external clock that never arrives. The /04 (4 MHz) speed grade must match the configuration-word oscillator setting - the -04 part does not reliably drive a 20 MHz crystal. Use MPLAB X IDE configuration-bit macros in source to keep settings visible and reviewable.
Estimated: SOIC-18 thermal resistance theta_JA is approximately 100 C/W on a 1-oz 2-layer FR-4 board with no thermal via array. At VDD = 5 V, FOSC = 4 MHz, the typical supply current is 3-5 mA, dissipating 15-25 mW. Junction temperature rise is therefore negligible (delta_T under 3 C), but industrial and automotive designs should still validate the -40 C to +125 C range for the /04I and Q-grade variants. Solder-joint reliability improves with conformal coating in humid environments.
合规信息
ROHS3 Compliant per distributor listing; lead-free with Pb-free matte-tin plating. Standard -04 grade is commercial temperature only; choose PIC16F627-04I/SO for industrial, or Q-grade variants for AEC-Q100 automotive.
