PIC16LF627A-I/P - 8-Bit 20MHz Flash MCU 1.75KB | Microchip
MPN: PIC16LF627A-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.46 | $3.46 |
| 10 | $3.11 | $31.10 |
| 100 | $2.62 | $262.00 |
| 500 | $2.27 | $1,135.00 |
| 1,000 | $2 | $2,000.00 |
PIC16LF627A-I/P Overview
A PIC16 mid-range microcontroller is a class of 8-bit RISC MCU built around a 14-bit instruction word and a Harvard architecture with separate program and data buses. The PIC16 LF family sits within the broader PIC microcontrollers -> 8-bit microcontrollers -> microcontrollers -> microcontrollers IC hierarchy and is targeted at low-power, cost-sensitive embedded designs where deterministic interrupt response and ease of programming outweigh raw MIPS. Compared to 32-bit Cortex-M parts, PIC16F/LF devices trade raw throughput for ultra-low power, simpler toolchains, and decades of stable code libraries.
Key features include a 4MHz internal oscillator (selectable), a USART module for asynchronous serial communication, a Capture/Compare/PWM (CCP) peripheral, two analog comparators with a programmable voltage reference, 16 I/O pins with weak pull-ups, a Watchdog Timer with its own on-chip RC oscillator, Brown-out Detect (BOD), Power-on Reset (POR), Power-up Timer (PWRT), and an Oscillator Start-up Timer (OST). The 14-bit instruction width and 35 single-word instruction set make firmware development and code reuse straightforward across the PIC16 family.
The PIC16LF627A-I/P is well suited to low-power applications such as battery-powered sensor nodes, simple motor control, remote controls, and consumer white goods. The internal oscillator eliminates external crystals in many designs, reducing BOM cost and board space. The device's nanoWatt-class sleep modes and low-voltage operation (down to 2.0V) extend battery life in always-on or duty-cycled systems.
Typical applications include hobbyist electronics, automotive interior accessories (non-safety), industrial sensor interfaces, and educational platforms where the 18-pin DIP form factor enables easy insertion into breadboards and ZIF sockets. When designing with this MCU, ensure decoupling capacitors are placed close to VDD/VSS pins, and reserve the MCLR pin for either an external reset or an internal weak pull-up configuration.
Drop-in alternatives for PIC16LF627A-I/P — 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 PIC16LF627A-I/P (same form factor and footprint) — differing in Package, Core Architecture, Internal Oscillator, Analog Comparators, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF627-04I/P
✅ Drop-In✓ In Stock
$1.23 / Unit
View Datasheet →PIC16LF627-04/P
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F627A-I/P
✅ Drop-In✓ In Stock
$1.72 / Unit
View Datasheet →PIC16F628A-I/P
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →PIC16LF628A-I/P
✅ Drop-In✓ In Stock
$1.84 / Unit
View Datasheet →PIC16LF627A-I/P Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 (8-bit RISC, 14-bit instruction word) |
| Program Memory Type | Flash |
| Program Memory Size | 1.75 KB (1K x 14 words) |
| Data RAM | 224 bytes |
| EEPROM Data Memory | 128 bytes |
| Maximum CPU Clock | 20 MHz (200 ns instruction cycle) |
| Internal Oscillator | 4 MHz (selectable, calibrated) |
| Supply Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 16 |
| Package | 18-pin PDIP (Plastic DIP) |
| Mounting Type | Through-Hole |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Peripherals | USART, 1x CCP, 2x Comparators, Programmable VREF, WDT, BOD, POR, PWRT, OST |
| Instruction Set | 35 single-word instructions |
| RoHS Status | Compliant |
PIC16LF627A-I/P Pin Configuration
| Pin 1 | RA7/OSC1/CLKIN — I/O port A bit 7 / Timer1 oscillator input / external clock input |
| Pin 2 | RA6/OSC2/CLKOUT — I/O port A bit 6 / Timer1 oscillator output / clock output |
| Pin 3 | RA5/MCLR/Vpp — I/O port A bit 5 / Master Clear (reset) input / programming voltage input |
| Pin 4 | RA4/AN4/TOCKI — I/O port A bit 4 / Analog input 4 / Timer0 clock input |
| Pin 5 | RA3/AN3/C1OUT — I/O port A bit 3 / Analog input 3 / Comparator 1 output |
| Pin 6 | RA2/AN2/CVREF — I/O port A bit 2 / Analog input 2 / Comparator voltage reference output |
| Pin 7 | RA1/AN1 — I/O port A bit 1 / Analog input 1 |
| Pin 8 | RA0/AN0 — I/O port A bit 0 / Analog input 0 |
| Pin 9 | RB7 — I/O port B bit 7 |
| Pin 10 | RB6 — I/O port B bit 6 |
| Pin 11 | RB5 — I/O port B bit 5 |
| Pin 12 | RB4 — I/O port B bit 4 |
| Pin 13 | RB3 — I/O port B bit 3 |
| Pin 14 | RB2 — I/O port B bit 2 |
| Pin 15 | RB1 — I/O port B bit 1 |
| Pin 16 | RB0/INT — I/O port B bit 0 / External interrupt input |
| Pin 17 | VDD — Positive supply voltage (2.0V to 5.5V) |
| Pin 18 | VSS — Ground reference |
Typical Applications
PIC16LF627A-I/P is suitable for 7 applications: Hobbyist and Educational Development, Battery-Powered Sensor Node, Industrial Sensor Interface Module, Remote Control and Consumer White Goods, Simple Motor Control and PWM Driver, Automotive Interior Accessories, Legacy Replacement and Industrial Retrofit.
Hobbyist and Educational Development
The PIC16LF627A-I/P is ideal for hobbyist and educational use thanks to its 18-pin PDIP form factor that drops directly into breadboards and ZIF sockets. The 20MHz PIC16 RISC core delivers 5 MIPS peak throughput with a 35-instruction set, letting students focus on embedded concepts rather than complex toolchains. The on-chip 4MHz calibrated oscillator removes the external crystal requirement for first projects. Combined with MPLAB X IDE support and free sample code libraries, this MCU is a standard teaching platform for digital I/O, timers, interrupts, and basic serial communication in introductory embedded courses and maker projects.
Recommended
Battery-Powered Sensor Node
The PIC16LF627A-I/P fits battery-powered sensor nodes where 2.0V to 5.5V operation and nanoWatt-class sleep currents extend runtime. The internal 4MHz oscillator eliminates continuous external crystal draw, while the 16 I/O pins and 128-byte EEPROM support local configuration storage across battery replacements. Brown-out Detect (BOD) prevents undefined behavior as the cell voltage drops near end-of-life. The integrated 2x comparator with programmable voltage reference simplifies analog threshold detection for sensors like thermistors, photocells, and PIR outputs without an external ADC.
Recommended
Industrial Sensor Interface Module
The PIC16LF627A-I/P works as a low-cost industrial sensor interface module thanks to its -40C to +85C industrial temperature rating and USART for serial reporting to a host controller. The 1.75KB Flash and 224-byte SRAM are sufficient for protocol conversion, debouncing, and simple state machines typical of 4-20mA loop interfaces or switch-contact aggregators. The CCP module provides PWM or input-capture for pulse-train sensors, while the internal comparators handle threshold detection. The PDIP package suits hand-soldered or socketed industrial control boards where field replacement matters.
Recommended
Remote Control and Consumer White Goods
The PIC16LF627A-I/P suits remote control transmitters and consumer white goods where cost, low power, and small pin count matter. The 16 I/O pins drive keypads, LED indicators, IR LEDs, and relays directly; the integrated USART handles communication with companion ICs or host microcontrollers. The 2.0V minimum VDD allows two AA alkaline cells to power the entire remote without a boost converter. The Watchdog Timer with its own RC oscillator ensures reliable recovery from ESD or transient events in harsh appliance environments.
Recommended
Simple Motor Control and PWM Driver
The PIC16LF627A-I/P drives small DC motors, fans, and LED dimmers via its Capture/Compare/PWM (CCP) peripheral generating precise PWM up to 20MHz system clock. The two on-chip comparators enable closed-loop current or speed sensing without external op-amps, while the 16 I/O pins handle direction logic, fault inputs, and tachometer feedback. The 18-pin PDIP package fits compact motor-control daughterboards used in PC fans, small appliances, and robotics kits. Combined with low-voltage operation, the MCU operates directly from 2-3 cell battery packs in portable motor applications.
Recommended
Automotive Interior Accessories
The PIC16LF627A-I/P is used in non-safety automotive interior accessories such as ambient lighting controllers, door-lock keypads, and seat-position memories. The industrial temperature rating covers cabin environments, and the wide 2.0V to 5.5V supply tolerates cranking transients when paired with a small LDO. The USART interfaces with body control modules, while the 128-byte EEPROM stores user preferences. Note: for safety-critical automotive applications, designers should select AEC-Q100-qualified parts instead of this industrial-grade variant.
Recommended
Legacy Replacement and Industrial Retrofit
The PIC16LF627A-I/P serves as a drop-in replacement for legacy PIC16F627A designs where the original MCU is no longer in production or has become hard to source. Its identical pinout and peripheral set allow direct PCB insertion without layout changes, while the LF low-voltage operation extends the design's usable supply envelope. Common retrofit scenarios include older industrial controllers, legacy instrumentation, and discontinued consumer products requiring long-term service support. Industrial buyers value the 18-pin PDIP for socketed field replacement.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF627A-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF627-04I/P | PIC16F627A-I/P | PIC16F628A-I/P | PIC16LF628A-I/P |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-pin PDIP | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same |
| Flash Memory | 1.75 KB (1K x 14) | 1.75 KB | 1.75 KB | 3.5 KB (+100%) | 3.5 KB (+100%) |
| SRAM | 224 bytes | 224 bytes | 128 bytes | 224 bytes | 224 bytes |
| EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Maximum Clock | 20 MHz | 4 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 2.0 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Peripherals | USART, 1x CCP, 2x Comparator, VREF, WDT, BOD | USART, 1x CCP, 2x Comparator, VREF, WDT, BOD | USART, 1x CCP, 2x Comparator, VREF, WDT, BOD | USART, 1x CCP, 2x Comparator, VREF, WDT, BOD | USART, 1x CCP, 2x Comparator, VREF, WDT, BOD |
Key Differentiators
- Lowest voltage operation in the PIC16F627A/628A family (vs PIC16F627A-I/P)
- Drop-in upgrade path with doubled Flash memory (vs PIC16F628A-I/P)
- Industrial temperature grade -40C to +85C (vs PIC16LF627-04/P)
Design Notes
Decouple VDD (pin 17) and VSS (pin 18) with a 100nF ceramic capacitor placed within 5mm of the supply pins to suppress switching noise from the internal oscillator and I/O transitions. For designs that switch heavy loads on the I/O pins, add a bulk 10uF tantalum or aluminum capacitor in parallel. The wide 2.0V to 5.5V supply range enables direct operation from two AA cells without a boost regulator, but ensure BOD is enabled in the configuration bits to prevent undefined execution as cells discharge below 2.0V.
Keep the MCLR pin (pin 4) trace short to minimize noise coupling that could cause spurious resets. If MCLR is not driven externally, configure it as RA5 by clearing the MCLRE configuration bit and rely on the internal weak pull-up. Place the 4MHz external crystal (if used) close to OSC1/OSC2 pins (1 and 2) with short, symmetric traces to ground, surrounded by a grounded copper pour to reduce EMI coupling into nearby analog comparator inputs.
Estimated: at 20MHz CPU clock with VDD = 5V, the typical supply current is approximately 10-15 mA active and <1uA in sleep mode (figures depend on peripheral state). Do not exceed the absolute maximum ratings: VDD must not exceed 7V, and any I/O pin voltage must remain within -0.3V to VDD+0.3V. When migrating firmware from PIC16F627A to PIC16LF627A, verify that Brown-out Detect voltage is configured for the LF threshold and that interrupt edge-select registers use the same polarity at the lower operating voltage.
Route analog comparator and ADC inputs (RA0-RA4) away from the high-current switching pins (RB0-RB7) to avoid digital noise coupling into threshold measurements. Keep analog traces short and surround them with a grounded copper pour. If the on-chip programmable voltage reference is used as a comparator threshold, add a 10nF ceramic bypass capacitor on the CVREF output pin (RA2) to stabilize the reference voltage under load.
Compliance Information
Industrial temperature grade, not AEC-Q100 qualified for automotive safety applications.
