PIC16F627T-20I/SO - 8-bit PIC MCU 1.75KB Flash 20MHz SOIC-18 | Microchip
MPN: PIC16F627T-20I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.41 | $1,205.00 |
| 1,000 | $2.12 | $2,120.00 |
PIC16F627T-20I/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a configurable set of peripheral blocks such as timers, comparators, communication interfaces, and general-purpose I/O. Within the broader semiconductor taxonomy, microcontrollers belong to the embedded processor category, which itself sits under digital logic ICs and integrated circuits. PIC microcontrollers use a Harvard architecture with separate program and data buses, a RISC instruction set, and are well known for low power consumption, deterministic timing, and a small footprint that suits cost-sensitive embedded designs.
Key features of the PIC16F627T-20I/SO include two on-chip analog comparators with a programmable voltage reference, a Watchdog Timer with its own dedicated RC oscillator, Brown-Out Detect (BOD), Power-on Reset (POR), Power-up Timer (PWRT) and Oscillator Start-up Timer (OST). Multiplexed MCLR, programmable weak pull-ups on PORTB, and an internal RC oscillator reduce external component count. Compared with baseline PIC16 devices, this family adds a Universal Synchronous/Asynchronous Receiver-Transmitter (USART) for serial communication, making it suitable for point-to-point and multidrop links.
Typical applications include appliance controls, sensor signal conditioning front-ends, LED lighting controllers, simple motor or fan control, automotive body and accessory modules, and remote control transmitters. The combination of analog comparators, internal oscillator, and USART is well matched to products that need a few serial commands in and a few discrete outputs out, without paying for a larger MCU.
When designing with this part, allow at least 100 nF of bypass capacitance close to VDD and AVSS, and reserve the MCLR pin as a reset input rather than repurposing it as I/O if reset stability matters. The internal 4 MHz RC oscillator can reduce BOM cost but external crystal accuracy is recommended for USART timing.
Drop-in alternatives for PIC16F627T-20I/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 PIC16F627T-20I/SO (same form factor and footprint) — differing in Package, Core Architecture, Internal Oscillator, Operating Temperature, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F627-20I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F627AT-I/SO
✅ Drop-In✓ In Stock
$1.83 / Unit
View Datasheet →PIC16F628AT-I/SO
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC16F648AT-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F627AT-E/SO
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16F627T-20E/SO
✅ Drop-In✓ In Stock
$2.55 / Unit
View Datasheet →PIC16F627T-20I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Family | PIC16F62X |
| Program Memory | 1.75 KB Flash |
| RAM | 224 bytes |
| EEPROM | 128 bytes |
| Maximum Clock Speed | 20 MHz |
| I/O Pins | 16 |
| Supply Voltage (VDD) | 3.0 V to 5.5 V |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | SOIC-18 (0.300 inch, lead-free) |
| Mounting Type | Surface Mount |
| Analog Comparators | 2 (with programmable VREF) |
| Communication Interface | USART (SCI/SPI master) |
| Timers | TMR0, TMR1, TMR2, Watchdog Timer with own RC |
| Reset Features | POR, PWRT, OST, Brown-Out Detect (BOD) |
| Pull-ups | Programmable weak pull-ups on PORTB |
| RoHS Status | Compliant (lead-free package) |
PIC16F627T-20I/SO Pin Configuration
| Pin 1 | RA7/OSC1 — I/O pin / crystal oscillator input |
| Pin 2 | RA6/OSC2 — I/O pin / crystal oscillator output |
| Pin 3 | RA5 — I/O pin |
| Pin 4 | RA4 — I/O pin (open-drain) |
| Pin 5 | VSS — Ground |
| Pin 6 | RB0 — I/O pin with interrupt |
| Pin 7 | RB1 — I/O pin |
| Pin 8 | RB2 — I/O pin |
| Pin 9 | RB3 — I/O pin (PGM input on some devices) |
| Pin 10 | RB4 — I/O pin with interrupt-on-change |
| Pin 11 | RB5 — I/O pin with interrupt-on-change |
| Pin 12 | RB6 — I/O pin / ICSP clock |
| Pin 13 | RB7 — I/O pin / ICSP data |
| Pin 14 | VDD — Positive supply (3.0 V to 5.5 V) |
| Pin 15 | RA0 — I/O pin / analog comparator input |
| Pin 16 | RA1 — I/O pin / analog comparator input |
| Pin 17 | RA2 — I/O pin / analog comparator output |
| Pin 18 | RA3 — I/O pin / MCLR (reset) input |
Typical Applications
PIC16F627T-20I/SO is suitable for 6 applications: Small Appliance Control, Automotive Body and Accessory Module, Sensor Interface Front-End, LED Lighting Controller, Remote Control Transmitter, Educational and Hobbyist Electronics.
Small Appliance Control
The PIC16F627T-20I/SO is well matched to small appliance control because its 1.75 KB Flash and 16 I/O pins comfortably handle button input scanning, LED driving, and basic relay or TRIAC control loops. Two on-chip analog comparators with a programmable VREF simplify temperature or current sensing without a dedicated ADC, and the internal 4 MHz RC oscillator removes the cost and PCB area of an external crystal in cost-sensitive designs.
Recommended
Automotive Body and Accessory Module
The PIC16F627T-20I/SO's industrial -40C to +85C temperature range, combined with the PIC16F62X family's low power consumption and USART peripheral, makes it suitable for automotive body modules such as interior lighting controllers, door lock receivers, and HVAC blend actuators. Its 16 I/O pins handle multiple LED outputs and switch inputs, while the on-chip USART provides a diagnostic link to the host BCM. For under-hood applications, the PIC16F627T-20E/SO (-40C to +125C) is preferred.
Recommended
Sensor Interface Front-End
Sensor interface front-ends benefit from the PIC16F627T-20I/SO's two analog comparators with programmable VREF, allowing direct connection of resistive sensors (thermistors, photodiodes) without a separate ADC. The 128-byte EEPROM provides non-volatile calibration storage, and the 224-byte RAM is sufficient to buffer polled sensor readings before forwarding them via USART. Brown-Out Detect ensures deterministic reset behavior when battery voltage dips in portable or remote sensor nodes.
Recommended
LED Lighting Controller
The PIC16F627T-20I/SO drives LED lighting controllers through its high-current sink/source I/O capable of direct LED drive, eliminating the need for external driver transistors on simple indicator and status LED chains. PWM generation is supported via TMR2, allowing dimming and breathing-light effects on RGB or single-color LED strings. The internal 4 MHz RC oscillator reduces BOM cost for low-end consumer lighting products where crystal accuracy is not required.
Recommended
Remote Control Transmitter
Remote control transmitters benefit from the PIC16F627T-20I/SO's low power consumption, internal RC oscillator, and Watchdog Timer with dedicated RC, allowing battery-powered devices to run for years on a single coin cell. The USART peripheral supports IR or RF encoder ICs, while the 16 I/O pins accept multi-button matrices for full keyboard layouts. Internal POR and BOD keep the device in a defined reset state during battery voltage sag.
Recommended
Educational and Hobbyist Electronics
The PIC16F627T-20I/SO is widely adopted in education and hobbyist projects because the PIC16F62X architecture is well documented, the SOIC-18 package is hand-solderable on breakout boards, and the in-circuit serial programming (ICSP) interface allows firmware updates without removing the device. Tutorials, sample code, and reference designs from Microchip's MPLAB X ecosystem let beginners program the device from day one. The 1.75 KB Flash supports complete projects such as digital clocks, simple games, and logic analyzers.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F627T-20I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F627-20I/SO | PIC16F627AT-I/SO | PIC16F628AT-I/SO | PIC16F648AT-I/SO | PIC16F627AT-E/SO |
|---|---|---|---|---|---|---|
| Package | SOIC-18 | 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 |
| Program Memory (Flash) | 1.75 KB | 1.75 KB | 2 KB | 3.5 KB | 7 KB | 2 KB |
| RAM | 224 B | 224 B | 224 B | 224 B | 256 B | 224 B |
| EEPROM | 128 B | 128 B | 128 B | 128 B | 256 B | 128 B |
| Max Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) |
| I/O Pins | 16 | 16 | 16 | 16 | 16 | 16 |
| Analog Comparators | 2 with programmable VREF | 2 with programmable VREF | 2 with programmable VREF | 2 with programmable VREF | 2 with programmable VREF | 2 with programmable VREF |
| Communication | USART | USART | USART | USART | USART | USART |
Key Differentiators
- Same-package upgrade path with more memory (vs PIC16F628AT-I/SO)
- Extended temperature option available (vs PIC16F627T-20E/SO)
- Industrial temperature variant (I suffix) (vs PIC16F627AT-E/SO)
Design Notes
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 14) with the ground return to the VSS pin (pin 5). For boards with significant switching loads, add a bulk 10 uF electrolytic or tantalum capacitor near the supply entry point. Estimated: PIC16F627T-20I/SO at 5 V, 4 MHz, all I/O static, draws approximately 1-2 mA active and sub-microamp in sleep mode; the internal RC oscillator is preferred for lowest sleep current.
The SOIC-18 footprint is the industry-standard 1.27 mm pitch with 7.5 mm body width. Provide a copper pad under the device for thermal spreading and route signal traces on the opposite side when possible. MCLR (pin 18) should be tied to VDD through a 10 kohm resistor or directly to VDD if hardware reset is not needed, but a 100 nF cap to VSS on MCLR prevents spurious resets from EMI.
Do not confuse the I (industrial -40C to +85C) and E (extended -40C to +125C) temperature suffixes - they affect cost and qualification but not pinout. PIC16F627T-04 (4 MHz) is electrically identical at 4 MHz but is not rated for 20 MHz operation; do not substitute one for the other at higher speeds. Brown-Out Detect must be enabled in CONFIG for reliable battery-powered operation.
When using the analog comparators, separate the analog inputs from switching I/O lines and keep digital traces away from the comparator input pins. The internal VREF module can be used as the comparator reference, eliminating external reference ICs but introducing switching noise on adjacent analog inputs. Estimated: comparator response time is approximately 200-400 ns at 5 V; if the application requires faster response, the PIC16F88 family with on-board ADC should be considered.
Compliance Information
Per Microchip product page, the SOIC-18 package is lead-free (Pb-free) and RoHS compliant. The I-suffix industrial temperature grade is not AEC-Q100 qualified; for AEC-Q100 automotive qualification, use the AEC-Q100-specific Microchip part numbers in the PIC16F family.
