PIC16LF627-04/SO - 4MHz 8-Bit Flash MCU, 1.75KB | Microchip
MPN： PIC16LF627-04/SO ✓ 啟用中PIC16LF627-04/SO 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (flash/RAM/EEPROM), and peripherals such as timers, ADC, communication interfaces, and I/O. Within the broader classification hierarchy, the PIC16LF627-04/SO belongs to: microcontroller -> embedded controller -> 8-bit MCU -> RISC MCU -> flash-based MCU -> semiconductor IC. The 8-bit PIC mid-range family targets cost-sensitive, deterministic embedded applications where simplicity, low power, and wide toolchain support outweigh the throughput advantage of 16/32-bit cores.
Key features include an internal 4MHz RC oscillator (no external crystal required for many designs), a 10-bit ADC with 8 channels, two 8-bit timers (Timer0, Timer2) plus one 16-bit timer (Timer1), a USART for serial communication, and a capture/compare/PWM (CCP) module. The device also integrates a comparator, brown-out reset, watchdog timer with on-chip dedicated oscillator, and an in-circuit serial programming (ICSP) interface for field upgrades without removing the chip.
The Harvard architecture separates program and data buses, allowing instruction fetch and operand access in the same cycle, which combined with the 14-bit wide instruction word gives high code density. Power management features include nanoWatt technology with multiple idle/sleep modes (typical 100nA standby), and a wide 2.0V-5.5V operating range that allows direct battery connection for 2x AA cells and simplifies designs migrating between 3.3V and 5V rails.
Typical applications include consumer remote controls, small appliance control, sensor signal conditioning, low-end security keypads, lighting controllers, and battery-powered handheld instrumentation. The combination of integrated peripherals, low power, and small SOIC-18 footprint makes it attractive for space- and cost-constrained embedded designs.
When designing with this device, verify whether the comparator and ADC reference are needed for your application - both share pins with digital I/O and require careful pin assignment. Use the ICSP interface to keep prototypes reprogrammable without removing the chip from the board.
This page synthesizes distributor pricing, drop-in compatible alternatives from the same Microchip PIC16F62X family, and practical design notes for engineers working on 8-bit embedded designs where PIC ecosystem familiarity, low BOM cost, or long-term Microchip availability are decision drivers.
直接替換替代品，適用於 PIC16LF627-04/SO — 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： PIC16LF627-04/SO （相同外形與佔位） — 差異在於 Package, Internal Oscillator, Operating Temperature, Timers, I/O Pins.
PIC16LF627-04I/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16F627-04/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16F627-04I/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF628-04/SO
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16F628-04I/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF627A-I/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF627-04/SO 最大額定值與電氣特性
| Core Architecture | PIC RISC, 8-bit, Harvard |
| Instruction Set | 35 instructions, 14-bit word |
| Max CPU Frequency | 4 MHz |
| Program Memory (Flash) | 1.75 KB (1K x 14) |
| Data RAM | 224 bytes |
| Data EEPROM | 128 bytes |
| I/O Pins | 16 |
| Operating Voltage | 2.0 V to 5.5 V |
| ADC | 10-bit, 8 channels |
| Timers | 2x 8-bit (TMR0/TMR2), 1x 16-bit (TMR1) |
| Communication | USART (SCI) |
| CCP Module | 1 (Capture/Compare/PWM) |
| Analog Comparator | Yes (1 pair) |
| Brown-Out Reset | Yes |
| Watchdog Timer | Yes, with dedicated oscillator |
| ICSP Programming | Yes |
| Internal Oscillator | Yes, 4 MHz |
| Power-Saving Modes | nanoWatt Technology (multiple sleep/idle) |
| 工作溫度 | 0C to +70C (Commercial) |
| 封裝 | 18-SOIC (SOIC-18) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
PIC16LF627-04/SO 腳位配置
| 腳位 1 | RA2/AN2/CVREF — GPIO RA2 / ADC channel 2 / comparator voltage reference output |
| 腳位 2 | RA3/AN3/CMP1 — GPIO RA3 / ADC channel 3 / comparator 1 output |
| 腳位 3 | RA4/T0CKI/CMP2 — GPIO RA4 / Timer0 clock input / comparator 2 output |
| 腳位 4 | RA5/MCLR/VPP — GPIO RA5 / Master Clear (reset, active low) / ICSP programming voltage |
| 腳位 5 | VSS — Ground reference |
| 腳位 6 | RB0/INT — GPIO RB0 / external interrupt input |
| 腳位 7 | RB1/RX/DT — GPIO RB1 / USART RX / synchronous data line |
| 腳位 8 | RB2/TX/CK — GPIO RB2 / USART TX / synchronous clock line |
| 腳位 9 | RB3/CCP1 — GPIO RB3 / Capture Compare PWM module 1 |
| 腳位 10 | RB4/PGM — GPIO RB4 / LVP programming entry |
| 腳位 11 | RB5 — GPIO RB5 |
| 腳位 12 | RB6/PGC — GPIO RB6 / ICSP programming clock (serial clock) |
| 腳位 13 | RB7/PGD — GPIO RB7 / ICSP programming data (serial data) |
| 腳位 14 | VDD — Positive supply voltage (2.0V to 5.5V) |
| 腳位 15 | OSC1/CLKIN — Oscillator input / external clock input |
| 腳位 16 | OSC2/CLKOUT — Oscillator output / 1/4 system clock output |
| 腳位 17 | RA0/AN0 — GPIO RA0 / ADC channel 0 |
| 腳位 18 | RA1/AN1 — GPIO RA1 / ADC channel 1 |
典型應用
PIC16LF627-04/SO 適用於 6 應用s: Consumer Remote Controls, Small Appliance Control, Sensor Signal Conditioning Hubs, Battery-Powered Handheld Instrumentation, Lighting Controllers, Security Keypads and Access Panels.
Consumer Remote Controls
The PIC16LF627-04/SO is well suited for consumer remote controls where its 16 I/O pins can directly scan a 4x4 key matrix without external drivers, and the internal 4MHz oscillator eliminates the need for an external crystal, reducing BOM cost. The 1.75KB flash comfortably holds protocol stacks for NEC, RC5, or Sony SIRC IR encoders, and the nanoWatt sleep modes drop quiescent current to roughly 100nA between button presses, extending alkaline battery life to over a year. The 10-bit ADC handles battery voltage monitoring while the USART supports learning-mode bridges to other household devices.
推薦
Small Appliance Control
For small appliance controllers (coffee makers, fans, toasters, blender controls), the PIC16LF627-04/SO provides the right mix of analog and digital integration: 8 channels of 10-bit ADC read temperature sensors, motor current, and user potentiometers; the CCP module drives TRIAC or PWM outputs for heater and motor power control; and the integrated comparator handles zero-crossing detection for line-powered applications. The wide 2.0V-5.5V supply range supports both battery backup and rectified-mains-derived rails. Brown-out reset and watchdog timer protect against supply glitches common in motor-driven loads.
推薦
Sensor Signal Conditioning Hubs
The PIC16LF627-04/SO works as a low-cost sensor hub that reads analog sensors via its 10-bit ADC, applies digital filtering in firmware, and outputs conditioned data over the USART or via PWM. Industrial measurement integrators (PLCs, HVAC, building automation) often use this PIC to convert 4-20mA loop or thermistor/bridge signals into clean digital outputs. The 224-byte RAM accommodates moving-average buffers while the internal 4MHz oscillator ensures consistent sampling rates without crystal compensation across temperature.
推薦
Battery-Powered Handheld Instrumentation
Battery-powered handheld tools (multimeters, light meters, IR thermometers, gas detectors) benefit from the PIC16LF627-04/SO's nanoWatt sleep modes that drop quiescent current to microamp levels, enabling years of standby life on a single coin cell. The 1.75KB flash holds calibration tables and measurement routines, while the integrated ADC and comparator simplify front-end designs. The 18-SOIC package occupies minimal PCB area, allowing slim handheld form factors with 16 I/O pins to drive LCD segments, LEDs, and user buttons.
推薦
Lighting Controllers
LED lighting controllers, dimmers, and color-mixing fixtures use the PIC16LF627-04/SO to generate multiple PWM channels for RGB or warm-white LED strings, manage dimming curves in firmware, and respond to user inputs via the 10-bit ADC. The CCP module provides one hardware PWM channel, and additional channels are generated via timer interrupts in the 1.75KB flash. The internal 4MHz oscillator is precise enough for flicker-free dimming above 100Hz PWM frequency, while the 2.0V-5.5V range supports both 3.3V logic-level LEDs and 5V analog dimmer interfaces.
推薦
Security Keypads and Access Panels
Low-end security keypads, garage-door entry pads, and access-control panels rely on the PIC16LF627-04/SO to scan 3x4 or 4x4 key matrices using 16 I/O pins, debounce inputs in firmware, and drive relays or buzzer outputs. The internal EEPROM stores user PINs and access codes with 100k write-cycle endurance, and the brown-out reset prevents EEPROM corruption during power glitches. The 1.75KB flash holds complete entry logic, lockout-after-N-attempts state machines, and serial output to a master controller via the integrated USART.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16LF627-04/SO — 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 | PIC16LF627-04I/SO | PIC16F627-04/SO | PIC16F627-04I/SO | PIC16LF628-04/SO | PIC16F628-04I/SO | PIC16LF627A-I/SO |
|---|---|---|---|---|---|---|---|
| Package | SOIC-18 | SOIC-18 - same | SOIC-18 - same | SOIC-18 - same | SOIC-18 - same | SOIC-18 - same | SOIC-18 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 1.75 KB (1K x 14) | 1.75 KB | 1.75 KB | 1.75 KB | 3.5 KB (2K x 14) | 3.5 KB | 1.75 KB |
| Data RAM | 224 bytes | 224 bytes | 224 bytes | 224 bytes | 224 bytes | 224 bytes | 224 bytes |
| Data EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 256 bytes | 256 bytes | 128 bytes |
| Max CPU Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Operating Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Operating Temperature | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| nanoWatt Sleep Modes | Yes (LF variant) | Yes | No (standard variant) | No | Yes | No | Yes (improved) |
主要差異化特點
- Wide 2.0V-5.5V supply range with nanoWatt sleep modes (對比PIC16F627-04/SO)
- Industrial temperature variant available in same 18-SOIC package (對比PIC16LF627-04I/SO)
- Pin-compatible upgrade path to 3.5KB flash (對比PIC16LF628-04/SO)
設計說明
The PIC16LF627-04/SO supports nanoWatt technology with multiple idle/sleep modes drawing as little as 100nA typical standby current per Microchip datasheet 40300D. To maximize battery life, configure unused peripherals to off via PCON/PIE registers before entering sleep, and use INT-on-change (RB0-RB7) to wake the MCU rather than polling loops. Brown-out reset must be enabled in the configuration words to prevent EEPROM corruption during battery voltage decay.
Two critical configuration traps are documented in the Microchip datasheet: (1) MCLR (pin 4) must be tied to VDD through a 10k resistor or left as input-only if not used as reset - leaving it floating causes spurious resets; (2) The ICSP pins PGC (RB6) and PGD (RB7) must not be pulled low at power-up if LVP is enabled in config words, or the device enters programming mode and the application fails to start. Use a 10k pull-up on RB7 if external circuitry might drive it low at boot.
For the 18-SOIC package, place a 100nF decoupling capacitor within 5mm of the VDD pin (pin 14) and a 10uF bulk capacitor on the same supply rail for transient response. The internal 4MHz oscillator does not require external capacitors, but if you switch to an external crystal via the configuration words, keep the crystal traces short (under 10mm) and surround them with a ground guard ring to reduce EMI susceptibility per Microchip analog PIC mid-range design guidelines.
合規資訊
RoHS compliant per Microchip product page. Lead-free SOIC-18 package. Not AEC-Q100 qualified (commercial grade); choose PIC16LF627-04I/SO for industrial-grade or automotive-cabin applications. Conflict-minerals compliant per Microchip supply chain disclosures.