PIC16LF627AT-I/ML - 1.75KB Flash 8-bit MCU, 28-QFN | Microchip
MPN: PIC16LF627AT-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.66 | $26.60 |
| 100 | $2.36 | $236.00 |
| 500 | $2.13 | $1,065.00 |
| 1,000 | $1.91 | $1,910.00 |
PIC16LF627AT-I/ML Overview
A microcontroller (MCU) is a single-chip computer that combines a CPU, program memory (flash/ROM), working memory (SRAM), non-volatile data memory (EEPROM), and programmable I/O peripherals. Within the broader electronics taxonomy, an MCU sits inside the embedded-computing family, which itself belongs to the Integrated Circuits category alongside memory ICs, logic ICs, and DSPs. Microchip's PIC16F series uses a RISC Harvard architecture and is widely adopted for cost-sensitive embedded designs.
Key features include nanoWatt XLP technology for ultra-low sleep currents, an internal 4 MHz / 37 kHz oscillator, 16 I/O pins with individual direction control, a 10-bit ADC, two analog comparators, a USART, and Capture/Compare/PWM modules. The "LF" prefix denotes the low-voltage variant optimized for battery-powered applications, while the "A" suffix indicates the second silicon revision with improved ADC performance and additional peripherals.
The PIC16LF627A architecture uses a 14-bit instruction word with a two-stage pipeline, enabling deterministic interrupt latency and predictable code execution. The exposed thermal pad on the QFN package enhances heat dissipation for applications driving higher output currents or operating across extended temperature ranges.
Typical applications include battery-powered sensor nodes, remote controls, low-power wireless endpoints, smart-meter peripherals, and small appliance controllers. The wide 2.0-5.5 V supply range and nanoWatt XLP sleep modes make it ideal for IoT edge devices where quiescent current directly impacts battery life.
When designing with this device, allocate the flash and EEPROM budgets early; the 1.75 KB program space limits feature-rich applications, so code written in assembly or highly optimized XC8 C is recommended. The exposed pad must be soldered to a properly sized copper pour to meet the thermal resistance specification.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16LF627AT-I/ML — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF627A-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF627-04I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F627A-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F628A-I/ML
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PIC16F627A-I/P
✅ Drop-In✓ In Stock
$1.72 / Unit
View Datasheet →PIC16LF627AT-I/ML Maximum Ratings & Electrical Characteristics
| Program Memory Type | Flash |
| Program Memory Size | 1.75 KB (1K x 14) |
| RAM Size | 224 bytes |
| EEPROM Size | 128 bytes |
| CPU Speed (MIPS) | 5 MIPS |
| Max Clock Frequency | 20 MHz |
| Supply Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 16 |
| ADC | 10-bit |
| Comparators | 2 analog comparators |
| PWM Modules | Capture/Compare/PWM |
| USART | 1 x USART |
| Package | 28-pin QFN (ML) with exposed pad |
| Operating Temperature | -40C to +85C (Industrial) |
| Mounting Type | Surface Mount |
| Lead-Free / RoHS | Lead-free, RoHS compliant |
PIC16LF627AT-I/ML Pin Configuration
| Pin 1 | RA0/AN0 — Bidirectional I/O pin with analog input channel 0 |
| Pin 2 | RA1/AN1 — Bidirectional I/O pin with analog input channel 1 |
| Pin 3 | RA2/AN2/VREF- — Bidirectional I/O pin with analog input channel 2 and VREF- |
| Pin 4 | RA3/AN3/VREF+ — Bidirectional I/O pin with analog input channel 3 and VREF+ |
| Pin 5 | RA4/T0CKI/C1OUT — Bidirectional I/O pin with Timer0 clock input and Comparator 1 output |
| Pin 6 | RA5/AN4/SS/C2OUT — Bidirectional I/O pin with analog input, SPI slave select, Comparator 2 output |
| Pin 7 | RA6/OSC2/CLKO — Bidirectional I/O pin with oscillator output |
| Pin 8 | RA7/OSC1/CLKI — Bidirectional I/O pin with oscillator input |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Positive supply voltage |
| Pin 11 | RB0/INT — Bidirectional I/O pin with external interrupt |
| Pin 12 | RB1/RX/DT — Bidirectional I/O pin with USART RX or synchronous data |
| Pin 13 | RB2/TX/CK — Bidirectional I/O pin with USART TX or synchronous clock |
| Pin 14 | RB3/CCP1 — Bidirectional I/O pin with Capture/Compare/PWM channel 1 |
| Pin 15 | RB4/PGM — Bidirectional I/O pin with low-voltage programming input |
| Pin 16 | RB5 — Bidirectional I/O pin |
| Pin 17 | RB6/T1OSC2/PGC — Bidirectional I/O pin with Timer1 oscillator output and ICSP clock |
| Pin 18 | RB7/T1OSC1/PGD — Bidirectional I/O pin with Timer1 oscillator input and ICSP data |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage |
| Pin 21 | RC0/T1OSO/T1CKI — Bidirectional I/O pin with Timer1 oscillator output or clock input |
| Pin 22 | RC1/T1OSI/CCP2 — Bidirectional I/O pin with Timer1 oscillator input and CCP2 |
| Pin 23 | RC2/CCP1 — Bidirectional I/O pin with CCP1 |
| Pin 24 | RC3/SCK/SCL — Bidirectional I/O pin with SPI clock or I2C clock |
| Pin 25 | RC4/SDI/SDA — Bidirectional I/O pin with SPI data in or I2C data |
| Pin 26 | RC5/SDO — Bidirectional I/O pin with SPI data out |
| Pin 27 | RC6 — Bidirectional I/O pin |
| Pin 28 | RC7 — Bidirectional I/O pin |
Typical Applications
PIC16LF627AT-I/ML is suitable for 6 applications: Battery-Powered Sensor Nodes, Remote Controls and IR Transmitters, Smart Meter Peripherals, Low-Power Wireless Endpoints, Small Appliance Controllers, Automotive Body Electronics.
Battery-Powered Sensor Nodes
The PIC16LF627AT-I/ML suits battery-powered sensor nodes because its nanoWatt XLP technology drops sleep current below 1 uA while its 2.0 V to 5.5 V supply range accepts single-cell lithium and two-cell alkaline chemistries directly. The internal 4 MHz / 37 kHz oscillator eliminates external crystal cost, and the 10-bit ADC captures temperature, light, or battery-voltage telemetry without external signal conditioning. With 1.75 KB flash and 224 bytes SRAM, the MCU can run a simple duty-cycled sleep-and-measure loop, waking on interrupt to transmit via the USART or PWM-driven IR LED. For IoT edge sensors expected to last years on a coin cell, the LF variant's lower quiescent current delivers measurably longer battery life than the standard PIC16F627A.
Recommended
Remote Controls and IR Transmitters
The PIC16LF627AT-I/ML is a strong fit for handheld remote controls because it combines low-cost 8-bit processing with a PWM module that can directly drive an IR LED at 38 kHz carrier frequency. The 2.0 V minimum supply lets the design run from two AAA cells for the entire product life, and nanoWatt sleep currents in the nanoamp range extend standby time to multi-year levels. Its 16 I/O pins comfortably support a 4x4 keypad matrix plus status LEDs, while the on-chip 10-bit ADC handles battery-voltage monitoring without an external supervisor. Compact 28-QFN packaging keeps the PCB small enough to fit behind a single AAA cell.
Recommended
Smart Meter Peripherals
Industrial smart-meter peripherals benefit from the PIC16LF627AT-I/ML's industrial -40C to +85C operating range, 5 MIPS deterministic throughput, and integrated USART for communication with the meter's main processor. Its 128 bytes of EEPROM is sized to hold calibration constants, meter IDs, and tamper counters that must survive power cycles. The two analog comparators support zero-cross detection on AC mains without an external op-amp, simplifying the BOM. For utility-meter applications where long-term reliability matters, Microchip's decades-long product longevity commitment makes this part a low-risk choice.
Recommended
Low-Power Wireless Endpoints
The PIC16LF627AT-I/ML acts as the host controller for low-power wireless endpoints such as Sub-GHz or BLE front-end modules. The USART provides a clean serial interface to modules like the MRF89XA or RN4871, while the 16 I/O lines drive sensors, LEDs, and user buttons. With sleep currents below 1 uA and active draw around 6-8 mA, it stays within the power budget of coin-cell-powered asset trackers. The wide supply range supports direct connection to harvested energy sources, and the small 28-QFN footprint minimizes PCB area for wearable form factors.
Recommended
Small Appliance Controllers
Small kitchen and household appliances use the PIC16LF627AT-I/ML to drive simple state machines for toasters, blenders, fans, and humidifiers. Its Capture/Compare/PWM module generates motor-speed or heater-element control signals, while the 10-bit ADC reads thermistor or potentiometer inputs for closed-loop control. The 1.75 KB flash holds control-loop firmware including safety timeouts and user-selectable modes. With an exposed pad on the QFN package, the die can dissipate heat from continuous PWM switching without an external heatsink in moderate-power designs.
Recommended
Automotive Body Electronics
Although the PIC16LF627AT-I/ML is industrial-temperature (-40C to +85C) rather than AEC-Q100 qualified, it serves non-safety automotive body electronics such as interior lighting controllers, accessory timers, and aftermarket alarm sensors. The wide 2.0-5.5 V supply tolerates the 12 V vehicle bus after regulator down-conversion, and the PWM module drives LED dimming or buzzer tones directly. Its nanoWatt sleep modes support long-duration parked-vehicle accessories where quiescent current must stay below 100 uA. For AEC-Q100-qualified replacements, Microchip offers the PIC16F family in automotive grades.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF627AT-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF627A-I/ML | PIC16LF627-04I/ML | PIC16F627A-I/ML | PIC16F628A-I/ML | PIC16F627A-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-QFN (ML) | 28-QFN (ML) - same | 28-QFN (ML) - same | 28-QFN (ML) - same | 28-QFN (ML) - same | 28-PDIP (P) - different footprint |
| Program Memory | 1.75 KB Flash | 1.75 KB Flash | 1.75 KB Flash | 1.75 KB Flash | 3.5 KB Flash | 1.75 KB Flash |
| RAM | 224 bytes | 224 bytes | 224 bytes | 224 bytes | 368 bytes | 224 bytes |
| EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 256 bytes | 128 bytes |
| Supply Voltage Range | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (F) | 2.0 V to 5.5 V (F) | 2.0 V to 5.5 V (F) |
| Max Clock Speed | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) |
| I/O Pins | 16 | 16 | 16 | 16 | 16 | 16 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Low-voltage LF variant with nanoWatt XLP technology (vs PIC16F627A-I/ML)
- Tape-and-reel packaging for automated SMT assembly (vs PIC16LF627A-I/ML (tube))
- Compact 28-QFN package with exposed thermal pad (vs PIC16F627A-I/P (28-PDIP))
Design Notes
Estimated: at 5 V supply, 20 MHz active mode and full peripheral usage, the PIC16LF627AT-I/ML draws approximately 6-8 mA. For battery-powered designs, the LF prefix is mandatory - the standard PIC16F627A draws similar current but lacks nanoWatt XLP sleep modes below 1 uA. Always place a 0.1 uF decoupling capacitor within 5 mm of the VDD pins (pin 10 and pin 20) and a bulk 10 uF tantalum or ceramic at the supply entry point. The two VDD/VSS pin pairs must both be connected; leaving one pair floating causes supply droop during ADC conversions.
Estimated: in the 28-QFN (ML) package, theta_JA is approximately 35 C/W on a 4-layer JEDEC test board. At maximum active current of 8 mA and 5 V supply, power dissipation is approximately 40 mW, producing a junction temperature rise of only 1.4 C above ambient - well within safe limits. However, the exposed thermal pad must be soldered to a copper pour of at least 25 mm^2 with thermal vias to the inner ground plane; omitting this connection degrades theta_JA by 2-3x and may cause thermal shutdown in high-temperature environments.
The 28-QFN (ML) package has a 0.65 mm pitch and a 6x6 mm body. Reference the Microchip package drawing in the datasheet for exact land pattern dimensions and the exposed pad recommendation. For hand-prototyping, consider the PIC16F627A-I/P (28-PDIP) variant which uses the same die but a through-hole footprint that is breadboard-friendly. For production, ensure the QFN land pattern includes a central thermal pad approximately 4 mm square with an array of 0.3 mm thermal vias on a 1.0 mm pitch grid.
Do not confuse the PIC16LF627A (LF low-voltage variant) with the PIC16F627A (full 5 V variant) - the LF variant is required for 2.0-3.6 V operation but is fully compatible at 5 V. Configuration word settings must include the oscillator selection (HS/RC/INT), watchdog timer enable, code protection bits, and brown-out voltage threshold - incorrect configuration values are a common cause of 'dead' prototypes. The ICSP programming pins (RB6/PGC and RB7/PGD) require isolation resistors or careful PCB routing to avoid contention with application circuitry during programming.
Compliance Information
Lead-free RoHS-compliant finish per Microchip product page; not AEC-Q100 qualified (industrial temperature grade only).
