PIC16F627A-I/SO - 8-Bit Flash MCU 1.75KB 20MHz | Microchip
MPN: PIC16F627A-I/SO ✓ فعالPIC16F627A-I/SO نمای کلی
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path that integrates CPU core, program memory (Flash), working memory (SRAM), non-volatile data memory (EEPROM), and peripherals such as timers, communication modules, and analog blocks into one package. Within the broader taxonomy, PIC16F627A belongs to PIC16 mid-range family -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. This integrated approach allows engineers to replace multiple discrete components with one device, reducing BOM cost and PCB area while delivering deterministic real-time behavior for small-to-medium control tasks.
Key features include the nanoWatt power-managed architecture offering extremely low standby current, the integrated USART for asynchronous/synchronous serial communication, the CCP module for PWM/capture/compare, and dual analog comparators that share an internal programmable voltage reference. The 18-pin SOIC package exposes 16 I/O lines plus VDD/VSS, allowing the device to drive LED indicators, sense switches, and bridge to RS-232 transceivers without external glue logic. MPLAB ICD programmer/debugger compatibility simplifies firmware development for prototyping and field updates.
The PIC16F627A uses a RISC Harvard architecture with a 14-bit instruction word and a 35-instruction set, executing most instructions in a single 200ns cycle at 20MHz. Its Flash program memory supports in-circuit serial programming (ICSP) through two pins, enabling firmware updates in the field without removing the device. The integrated nanoWatt technology provides multiple idle and sleep modes that drop current consumption to microampere levels, extending battery life in portable or mains-disconnected applications.
Typical applications include automotive and industrial control nodes, white-goods and appliance user interfaces, low-end remote controls, sensor signal conditioning with on-chip comparators, and small protocol bridges such as UART-to-GPIO or PWM-driven motor drivers in fans and pumps. The wide operating range makes it suitable for both line-powered industrial equipment and battery-powered consumer devices.
When designing with this device, reserve two pins (RB6/RB7) for ICSP unless in-system programming is not required, place a 100nF decoupling capacitor within 5mm of the VDD pin, and connect the MCLR pin through a 10kohm pull-up to VDD for reliable reset. The CCP and USART peripheral pins must be mapped to specific I/O lines, so plan pin assignments early in the schematic phase to avoid re-routing.
This page synthesizes official datasheet parameters, cross-brand equivalents from the PIC16 ecosystem, and practical design recommendations not bundled into a single manufacturer document, giving procurement engineers and embedded designers a single reference for the PIC16F627A-I/SO.
جایگزین‌های drop-in برای PIC16F627A-I/SO — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC16F627A-I/SO (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Program Memory Size, Core Architecture, Package, RoHS Status, Program Memory Type.
PIC16F628A-I/SO
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16F627A-I/SS
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16F627A-E/SO
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16F627-04I/SO
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16F627-20/SO
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16F627A-E/ML
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16F627A-I/SO حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | PIC16 8-bit RISC (Harvard) |
| Program Memory (Flash) | 1.75 KB (1K x 14) |
| RAM | 224 bytes |
| EEPROM Data Memory | 128 bytes |
| Maximum CPU Clock | 20 MHz |
| Internal Oscillator | 4 MHz |
| ولتاژ تغذیه | 4.5 V to 5.5 V |
| I/O Pins | 16 |
| Timers | 1 x 8-bit, 1 x 16-bit |
| Communication Modules | USART |
| Analog Peripherals | 2 Comparators, Programmable Voltage Reference |
| PWM/CCP Modules | 1 (Capture/Compare/PWM) |
| محدوده دمای کاری | -40C to +85C (Industrial) |
| بسته‌بندی | 18-pin SOIC (SO), 300 mil |
| نوع نصب | Surface Mount |
| Instruction Set | 35 instructions, 14-bit word |
| In-Circuit Programming | ICSP (2-wire) |
پیکربندی پین PIC16F627A-I/SO
| پین 1 | RA2/AN2/CVREF — GPIO RA2 / analog input 2 / CVref output |
| پین 2 | RA3/AN3/C1OUT — GPIO RA3 / analog input 3 / comparator 1 output |
| پین 3 | RA4/AN4/T0CKI — GPIO RA4 / analog input 4 / Timer0 clock input |
| پین 4 | MCLR/VPP/RA5 — Master clear reset / ICSP programming voltage / GPIO RA5 |
| پین 5 | VSS — Ground reference |
| پین 6 | RB0/INT — GPIO RB0 / external interrupt source |
| پین 7 | RB1/RX/DT — GPIO RB1 / USART RX / synchronous data |
| پین 8 | RB2/TX/CK — GPIO RB2 / USART TX / synchronous clock |
| پین 9 | RB3/CCP1 — GPIO RB3 / CCP1 PWM output or capture input |
| پین 10 | RB4/PGM — GPIO RB4 / low-voltage ICSP programming |
| پین 11 | RB5 — GPIO RB5 |
| پین 12 | RB6/ICSPCK — GPIO RB6 / ICSP clock |
| پین 13 | RB7/ICSPDAT — GPIO RB7 / ICSP data |
| پین 14 | VDD — Positive supply 4.5V to 5.5V |
| پین 15 | OSC2/CLKOUT/RA6 — Crystal oscillator output / Fosc/4 output / GPIO RA6 |
| پین 16 | OSC1/CLKIN/RA7 — Crystal oscillator input / external clock in / GPIO RA7 |
| پین 17 | RA0/AN0/C1IN+ — GPIO RA0 / analog input 0 / comparator 1 positive input |
| پین 18 | RA1/AN1/C2IN+ — GPIO RA1 / analog input 1 / comparator 2 positive input |
کاربردهای معمول
PIC16F627A-I/SO مناسب است برای 6 کاربردs: Industrial Appliance Control, Automotive Body and Interior Modules, Sensor Signal Conditioning and Threshold Detection, Battery-Powered Remote Control and Wireless HMI, PWM Motor and Fan Speed Control, UART-to-GPIO Protocol Bridge and Industrial IO Aggregator.
Industrial Appliance Control
The PIC16F627A-I/SO's 1.75KB Flash, dual analog comparators, and 20MHz CPU make it well suited for industrial appliance control such as washing machines, dryers, and HVAC actuators. Placed as the main controller on a 5V logic board, the on-chip USART bridges to a display or master inverter, while the CCP module generates PWM for triac-fired heater elements or brushless-DC commutation. The integrated programmable voltage reference lets the two comparators implement over-temperature, over-current, or zero-cross detection without external op-amps, shrinking BOM cost. nanoWatt sleep modes reduce standby power when the appliance is plugged in but inactive, helping meet energy-star regulations.
پیشنهادی
Automotive Body and Interior Modules
For interior lighting, mirror control, and seat-position modules the PIC16F627A-I/SO handles GPIO multiplexing, PWM dimming, and LIN-bus-style UART traffic at automotive cost targets. Although the industrial -I/SO grade is only qualified to +85C, the family offers the AEC-Q100 -E/SO variant for under-hood or dashboard placement. The CCP module drives LED drivers at frequencies up to 20kHz with <1% duty resolution, and the two comparators implement window-monitoring of battery voltage without external comparators. Placing the MCU near the LIN transceiver reduces wiring harness complexity by using a single UART wire plus ground.
پیشنهادی
Sensor Signal Conditioning and Threshold Detection
The PIC16F627A-I/SO's two on-chip analog comparators and programmable voltage reference make it ideal for sensor threshold and window-detection tasks such as water-level probes, gas-detector head units, and limit-switch aggregators. Engineers can program the internal Vref to set custom trip points, then route the comparator outputs through GPIO interrupts for low-latency response. The 4 MHz internal oscillator eliminates the external crystal, reducing part count in sealed IP67 sensor housings where board access is limited. The 128-byte EEPROM stores calibration data and serial numbers without external memory chips.
پیشنهادی
Battery-Powered Remote Control and Wireless HMI
In handheld remote controls, wireless key fobs, and battery-powered human-machine-interface panels, the PIC16F627A-I/SO shines with its nanoWatt sleep modes drawing only microamperes between button presses. Wake-on-interrupt from GPIO or comparator change handles debounced keypress detection, and the USART can drive a 2.4GHz or sub-GHz radio module (NRF24L01, CC1101) for cable-free control links. The integrated 4 MHz internal oscillator removes the external resonator, saving board space, while 16 GPIO pins comfortably drive 8-12 keys plus LED indicators.
پیشنهادی
PWM Motor and Fan Speed Control
The PIC16F627A-I/SO's CCP module provides 10-bit PWM resolution at 19.5 kHz when timed off TMR2, ideal for brushed-DC motor or 4-wire fan speed controllers. Adding a low-side MOSFET driver and a shunt resistor, the on-chip comparator implements cycle-by-cycle current limiting for protection, while the programmable voltage reference sets the trip level digitally via firmware rather than resistor networks. The 20 MHz MIPS handles trapezoidal commutation for small BLDC pumps or fans with negligible jitter, and ICSP allows in-system tuning of control loops during bench bring-up.
پیشنهادی
UART-to-GPIO Protocol Bridge and Industrial IO Aggregator
The PIC16F627A-I/SO is widely used as a low-cost UART-to-GPIO bridge that converts Modbus or vendor-specific commands from a host PLC into parallel digital outputs. Its 16 GPIO pins expose 16 optically-isolated relays or solid-state outputs while the USART runs at up to 115.2 kbps with hardware address detection. This eliminates the need for a more expensive FPGA or larger MCU in simple industrial IO expansion modules. The 128-byte EEPROM retains module configuration across power cycles, and the comparator inputs can double as fast digital inputs for fault signaling.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC16F627A-I/SO — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC16F628A-I/SO | PIC16F627A-I/SS | PIC16F627A-E/SO | PIC16F627-04I/SO | PIC16F627-20/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC (SO) | 18-SOIC (SO) - same | 20-SSOP - smaller, requires footprint remap | 18-SOIC (SO) - same | 18-SOIC (SO) - same | 18-SOIC (SO) - same |
| Flash Program Memory | 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) | 1.75 KB (1K x 14) |
| Maximum CPU Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 20 MHz |
| RAM | 224 bytes | 224 bytes | 224 bytes | 224 bytes | 128 bytes | 128 bytes |
| EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended, AEC-Q100) | -40C to +85C (Industrial) | 0C to +70C (Commercial) |
| AEC-Q100 Automotive Qualified | No | No | No | Yes | No | No |
تفاوت‌های کلیدی
- Double Flash at same price tier (در مقابلPIC16F627-04I/SO)
- Industrial temperature in SOIC (در مقابلPIC16F627-20/SO)
- Expanded peripheral set over cost-down siblings (در مقابلPIC16F627A-I/SS)
یادداشت‌های طراحی
Place a 100nF ceramic decoupling capacitor within 5mm of the VDD pin (14) and a bulk 10uF tantalum or aluminum-polymer capacitor on the same VDD trace. Keep the GND return path short to the VSS pin (5) to minimize voltage spikes when the GPIO drives relays or solenoids. Estimated: with one 100nF X7R at the IC and one 10uF bulk, target loop inductance under 10 nH preserves logic stability during PWM edges.
Reserve MCLR (pin 4) for a 10kohm pull-up to VDD and connect to the in-circuit programmer through a 4.7kohm series resistor. For low-power designs add a 100kohm pull-down to disable the internal weak pull-up only if ICSP is unused. Estimated: 10kohm pull-up with 4.7kohm ICSP series yields RST rise time of ~1 microsecond at 5V allowing the PICkit to override cleanly without false resets.
Do not drive CCP1 (pin 9, RB3) and OSC1 (pin 16, RA7) past their 25mA source/sink ratings; exceeding this can latch the I/O. When using the analog comparators, ensure the CVREF programmable voltage reference is enabled in CVRCON before reading C1OUT/C2OUT. Lastly, the USART pins (RB1/RB2) on the PIC16F627A-I/SO share with the synchronous serial port, so ANSEL register bits must be cleared to enable digital mode. The 4 MHz internal oscillator has a factory-trimmed accuracy of +/-1% and may need user calibration for UART timing above 9600 baud.
When routing the USART at 115.2 kbps or higher keep the trace under 50mm and place a 100ohm series resistor to damp reflections if the receiver (e.g. RS-232 transceiver) has mismatched impedance. For CCP PWM up to 20kHz the slew rate is moderate; however routing the pin adjacent to the crystal can couple noise, so keep a 3mm clearance or a guard trace to GND. Estimated: 100ohm series + 50pF load gives a damping factor of ~0.7 eliminating overshoot on 1m cables.
اطلاعات انطباق
RoHS and lead-free compliant per Microchip product page. -I/SO grade is not AEC-Q100 qualified; use -E/SO for automotive. Halogen-free status not stated in verified data.
