PIC16LF627T-04/SO - 4MHz 8-bit Flash MCU, 16 I/O, SOIC-18 | Microchip
MPN: PIC16LF627T-04/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.33 | $1.33 |
| 10 | $1.2 | $12.00 |
| 100 | $1.05 | $105.00 |
| 500 | $0.93 | $465.00 |
| 1,000 | $0.84 | $840.00 |
PIC16LF627T-04/SO Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (FLASH/ROM), data RAM, and peripherals onto one silicon die. Within the broader semiconductor taxonomy, an MCU is a subset of microprocessors; the PIC16F627 family specifically uses Microchip's enhanced mid-range 8-bit RISC core with 35 instructions and a 14-bit instruction word. MCUs sit hierarchically as: microcontroller -> embedded processor -> semiconductor IC, and they form the decision-making heart of nearly every embedded electronic product.
Key features of the PIC16LF627T-04/SO include 16 I/O pins with individually programmable direction, two analog comparators with programmable on-chip voltage reference, three timers (Timer0, Timer1, Timer2), a universal synchronous/asynchronous receiver-transmitter (USART), an internal 4 MHz oscillator option, and a watchdog timer with its own on-chip RC oscillator for reliable operation. Brown-out Detect (BOD), Power-on Reset (POR), Power-up Timer (PWRT), and Oscillator Start-up Timer (OST) provide robust system initialization. The device draws microamp-level sleep current, suiting it for low-power applications.
Architecturally, the PIC16LF627 uses a Harvard-style modified RISC core with separate program and data buses, allowing instruction fetch and data access in the same cycle. The 14-bit wide FLASH enables single-word instructions and compact code density; peripherals are memory-mapped for predictable access timing. The CMOS process delivers low static power consumption and wide operating voltage tolerance.
Typical applications include remote controls, sensor interfaces, small appliance controls, LED lighting drivers, battery-powered instrumentation, and IoT edge nodes. The combination of analog comparators, PWM, and USART supports closed-loop motor control, signal conditioning, and wired connectivity. In a 4-layer SOIC layout, the chip can serve as a cost-optimized main controller for sub-$10 end products.
When designing with this part, ensure decoupling capacitors (typically 100 nF) are placed within 5 mm of VDD/VDD2, and reserve the MCLR pin through a proper reset circuit (10 kohm pull-up to VDD with a diode to VPP for in-circuit serial programming). Use MPLAB X IDE with XC8 compiler for software development.
This page synthesizes distributor pricing, drop-in alternatives in the SOIC-18 footprint, and practical design notes not found in the manufacturer datasheet alone, providing an engineering-ready view for procurement and design validation.
Drop-in alternatives for PIC16LF627T-04/SO — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16LF627T-04/SO (same form factor and footprint) — differing in Package, Communication, Core Architecture, I/O Pins, Internal Oscillator.
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Request AlternativesPIC16LF627T-04/SO Maximum Ratings & Electrical Characteristics
| Core | PIC 8-bit RISC enhanced mid-range |
| Instruction Set Architecture | 8-bit data, 14-bit instruction word |
| Program Memory (FLASH) | 1.75 KB (1024 x 14 words) |
| Data RAM | 224 bytes |
| Data EEPROM | 128 bytes |
| Maximum CPU Clock Frequency | 4 MHz |
| Operating Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 16 (individually programmable direction) |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Analog Comparators | 2 with programmable VREF |
| Communication | USART/SCI |
| PWM Modules | 1 (CCP) |
| Watchdog Timer | Yes, with dedicated on-chip RC oscillator |
| Internal Oscillator | 4 MHz (factory calibrated) |
| Brown-out Detect (BOD) | Yes |
| Power-on Reset / PWRT / OST | Yes |
| Package | SOIC-18 (SO), 7.50 mm body width |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial) |
| MSL Level | 1 (unlimited floor life) |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes |
| Programming | ICSP via MCLR/PGD/PGC |
| Development Toolchain | MPLAB X IDE + XC8 compiler |
PIC16LF627T-04/SO Pin Configuration
| Pin 1 | RA2 — Digital I/O / analog comparator input |
| Pin 2 | RA3 — Digital I/O / analog comparator input |
| Pin 3 | RA4 — Digital I/O (open-drain) / Timer0 clock |
| Pin 4 | RA5 — Digital I/O / analog comparator input |
| Pin 5 | RA0 — Digital I/O / analog comparator output |
| Pin 6 | RA1 — Digital I/O / analog comparator input |
| Pin 7 | RA6 — Digital I/O / oscillator output |
| Pin 8 | RA7 — Digital I/O / oscillator input |
| Pin 9 | OSC1/CLKIN — External clock input / crystal |
| Pin 10 | OSC2/CLKOUT — Oscillator output / clock out |
| Pin 11 | VDD — Positive supply voltage (2.0-5.5V) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | RB0/INT — Digital I/O / external interrupt |
| Pin 14 | RB1 — Digital I/O |
| Pin 15 | RB2 — Digital I/O |
| Pin 16 | RB3/PGM — Digital I/O / LVP programming |
| Pin 17 | RB4 — Digital I/O |
| Pin 18 | RB5 — Digital I/O |
Typical Applications
PIC16LF627T-04/SO is suitable for 7 applications: Remote Control / IR Transmitter, Battery-Powered Sensor Interface, LED Lighting Controller, Small Appliance Control, Automotive Interior Accessory, Industrial Timer / Counter Module, Educational / Hobby MCU Board.
Remote Control / IR Transmitter
The PIC16LF627T-04/SO fits IR remote control designs because its 4 MHz CPU clock, 1.75 KB FLASH, and 224 bytes RAM are sufficient to encode RC5/RC6/SIRC protocols in firmware, while the 2.0V-5.5V operating range matches two-AA-battery power supplies. Its low sleep current (microamps) extends battery life to multiple years. The USART and Timer2 peripherals generate accurate 38 kHz / 56 kHz carrier frequencies for IR LED modulation. Engineers typically pair this MCU with a TSOP38238 IR receiver, a 2N2222 driver transistor, and IR LED; the SOIC-18 footprint fits standard key fob and wall-mount remotes. Compared with discrete encoder ICs, the FLASH-based MCU allows custom protocol support without mask changes.
Recommended
Battery-Powered Sensor Interface
The PIC16LF627T-04/SO is well suited for battery-powered sensor nodes because it operates down to 2.0V, supports microamp-level sleep modes, and integrates two analog comparators with a programmable voltage reference for sensor signal conditioning. The 16 I/O pins allow direct connection to thermistors, photo-diodes, and quadrature encoders without external logic. The on-chip 4 MHz oscillator eliminates the need for an external crystal, reducing BOM cost and PCB area. In a typical application, the MCU wakes every 1 second via WDT, reads a sensor via ADC comparator, transmits via USART, and returns to sleep, achieving years of operation from a CR2032 coin cell.
Recommended
LED Lighting Controller
The PIC16LF627T-04/SO drives LED lighting strips via its CCP PWM module and high-current-sink/source I/O capable of 25 mA per pin direct LED drive. Its 4 MHz CPU handles DMX-512 or DALI protocol parsing in firmware, while the 1.75 KB FLASH stores lookup tables for color-mixing algorithms. The 16 I/O pins support up to 8 PWM channels when paired with external shift registers. The 2.0V-5.5V operating range suits 24V-buck-driver front-ends. Designers commonly pair it with TLC5940 LED drivers for 16-channel dimming, achieving smooth 256-step dimming without flicker. The SOIC-18 footprint fits standard LED driver PCB outlines.
Recommended
Small Appliance Control
The PIC16LF627T-04/SO controls small appliances (coffee makers, fans, blenders) because its two analog comparators enable closed-loop temperature or speed feedback, while the CCP PWM drives TRIAC/IGBT gate drivers for AC motor control. The USART interfaces with Bluetooth/Wi-Fi modules for IoT connectivity. With 1.75 KB FLASH and 224 bytes RAM, the MCU runs state-machine logic for appliance timers and safety interlocks. Brown-out Detect (BOD) and Watchdog Timer provide robust fault recovery in industrial environments. The SOIC-18 footprint and 2.0V-5.5V range suit both battery-powered handheld appliances and mains-powered countertop units.
Recommended
Automotive Interior Accessory
The PIC16LF627T-04/SO suits automotive interior accessories (LED mood lighting, seat controllers, sensor nodes) due to its -40C to +85C industrial temperature range and robust analog peripherals. The 16 I/O pins and 2 analog comparators drive LED strings and read switch inputs in body-control modules. The CCP PWM module dims interior LEDs with 10-bit resolution. The internal 4 MHz oscillator eliminates crystal cost in space-constrained dashboards. Designers typically pair it with CAN transceivers like MCP2551 via the USART for sub-bus accessories; the SOIC-18 footprint survives engine-bay thermal stress when mounted in passenger-compartment areas.
Recommended
Industrial Timer / Counter Module
The PIC16LF627T-04/SO fits industrial timer and counter applications because its three timers (Timer0, Timer1, Timer2) handle event counting, frequency measurement, and PWM generation simultaneously, while the 16-bit Timer1 can capture external pulses up to 4 MHz. The 1.75 KB FLASH stores preset look-up tables for multi-stage timers. The watchdog timer with dedicated RC oscillator ensures recovery from EMI-induced lockups. The 2.0V-5.5V range suits 24V industrial rails via simple LDO. The SOIC-18 footprint is compatible with DIN-rail-mounted PCB designs, and the part's wide operating temperature ensures reliable operation in factory environments.
Recommended
Educational / Hobby MCU Board
The PIC16LF627T-04/SO is widely used in educational and hobbyist projects because its SOIC-18 footprint is breadboard-friendly with breakout boards, while 1.75 KB FLASH is sufficient for beginner projects (blinking LED, PWM motor control, UART communication). The 2.0V-5.5V range tolerates USB-powered 5V and 3.3V logic. The ICSP programming via MCLR/PGD/PGC enables easy flashing with PICkit programmers without removing the chip. The enhanced mid-range instruction set (35 instructions) is fully documented in Microchip's datasheet, supporting assembly and C learning paths. The PICkit 3 and MPLAB X IDE provide a free, professional-grade development environment widely used in universities.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF627T-04/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF627-04/SO | PIC16LF627A-I/SO | PIC16LF627T-04I/SO | PIC16LF628A-I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-18 | SOIC-18 - same | SOIC-18 - same | SOIC-18 - same | SOIC-18 - same |
| Maximum CPU Clock | 4 MHz | 4 MHz | 20 MHz | 4 MHz | 20 MHz |
| FLASH Program Memory | 1.75 KB (1024 x 14) | 1.75 KB | 1.75 KB | 1.75 KB | 3.5 KB |
| Data RAM | 224 bytes | 224 bytes | 224 bytes | 224 bytes | 224 bytes |
| Data EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Operating Voltage Range | 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) | 0C to +70C | -40C to +85C | -40C to +85C | -40C to +85C |
| Internal Oscillator | 4 MHz | 4 MHz | 4 MHz / 8 MHz selectable | 4 MHz | 4 MHz / 8 MHz selectable |
Key Differentiators
- Low-voltage 2.0V operation enables 2-AA battery designs (vs PIC16F627T-04/SO)
- Enhanced analog comparator with programmable VREF (vs PIC16LF627T-04I/SO)
- On-chip 4 MHz oscillator eliminates external crystal (vs PIC16LF628A-I/SO)
Design Notes
Place a 100 nF decoupling capacitor within 5 mm of the VDD pin (pin 11), with the loop area kept as small as possible. For designs operating below 3.0V, add a 10 uF bulk capacitor near the IC to compensate for transient current spikes during FLASH programming. The PIC16LF627T-04/SO draws microamp-level current in sleep mode (typically <1 uA at 2.0V), so the decoupling network should not introduce parasitic leakage via ceramic DC-bias effects. Estimated: at 4 MHz active mode, IDD ~2 mA typical at 5V per datasheet; the 100 nF cap keeps VDD ripple under 50 mVpp during ADC comparator transitions.
Route the ICSP programming signals (MCLR, PGD, PGC) as short, dedicated traces without series resistors, terminating directly at the MCU pins. Use a 10 kohm pull-up on MCLR to VDD with a diode to VPP for in-circuit serial programming compatibility. Avoid running noisy signals (PWM, relay coils) parallel to the oscillator pins (OSC1/OSC2) for more than 5 mm to prevent coupling. The SOIC-18 thermal pad is not present on this package; copper pours are not required for thermal dissipation given the low 4 MHz clock.
Do not leave the MCLR pin floating - it must be tied to VDD through a 10 kohm resistor or driven by the PICkit programmer during debug. Failure to configure the internal oscillator via the CONFIG register before code execution can leave the device clockless, requiring a high-voltage programmer to recover. When using the LVP (Low-Voltage Programming) mode via RB3/PGM pin, ensure this pin is not pulled low at startup or the MCU will enter programming mode instead of executing user code. Source: Microchip PIC16F627 datasheet DS30262B, configuration bits section.
When using the USART at 9600 baud or higher, ensure the baud-rate generator error is below 1% by selecting the appropriate SPBRG value and BRGH bit. The internal 4 MHz oscillator is factory calibrated to +/-2%, but temperature drift can add +/-3% across -40C to +85C, so for reliable serial communication in industrial environments, use an external crystal. The CCP PWM module outputs at approximately 1 kHz with 10-bit resolution when using Timer2 with a 4 MHz FOSC, suitable for LED dimming and motor speed control. Source: Microchip PIC16F627 datasheet DS30262B, USART and CCP sections.
Compliance Information
RoHS and lead-free compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC16LF627AT-I/SO for automotive AEC-Q100 applications.
