PIC16F627T-20/SS - 8-bit Flash MCU 1.75KB 20MHz SSOP20 | Microchip
MPN: PIC16F627T-20/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.18 | $3.18 |
| 10 | $2.92 | $29.20 |
| 100 | $2.61 | $261.00 |
| 500 | $2.34 | $1,170.00 |
| 1,000 | $2.05 | $2,050.00 |
PIC16F627T-20/SS Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working RAM, peripherals, and I/O on one die. The PIC16F62X family uses a Harvard RISC architecture, meaning program and data buses are physically separate, allowing simultaneous instruction fetch and operand access. This design delivers deterministic throughput (one instruction per instruction cycle, except for branches) which is attractive for hard-real-time control loops in industrial and automotive subsystems. Microcontrollers sit in the broader hierarchy: MCU -> embedded controller -> processing subsystem -> electronic system.
Key features of the PIC16F627T-20/SS include 16 I/O pins with individually programmable direction, high-current sink/source capable of directly driving LEDs, a Power-on Reset (POR), Power-up Timer (PWRT), Oscillator Start-up Timer (OST), Brown-out Detect (BOD), and a Watchdog Timer (WDT) with its own dedicated on-chip RC oscillator for fail-safe recovery. Programmable weak pull-ups on PORTB reduce external component count, while the internal 4 MHz RC oscillator enables designs without an external crystal.
The 35-instruction RISC instruction set simplifies code generation and code-density optimization. In-system programming via ICSP allows firmware updates after PCB assembly. The 20 MHz clock supports a 200 ns instruction cycle, well-suited to bit-banging protocols, PWM generation for motor or LED dimming, and USART baud rates up to several hundred kbps.
Typical applications include low-cost remote controls, appliance front panels, sensor interface nodes, small motor control boards, LED lighting controllers, and battery-powered instruments. The wide 5 V supply range and integrated peripherals reduce BOM cost in space-constrained consumer designs.
When designing with this MCU, select an appropriate oscillator configuration (internal RC vs external crystal) early because it affects timing accuracy. The 'T' suffix denotes tape-and-reel packaging for high-volume SMT assembly, and the '20' suffix indicates the 20 MHz maximum clock speed grade.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design considerations compiled from the manufacturer datasheet and authorized distributors as of 2026-09-21.
Drop-in alternatives for PIC16F627T-20/SS — 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-20/SS (same form factor and footprint) — differing in Package, Operating Temperature, I/O Pins, Analog Comparators, Instruction Cycle Time.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F627-20/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F627AT-I/SS
✅ Drop-In✓ In Stock
$1.77 / Unit
View Datasheet →PIC16F627T-04/SS
✅ Drop-In✓ In Stock
$1.7 / Unit
View Datasheet →PIC16F627T-04E/SO
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →PIC16F627AT-I/SO
✅ Drop-In✓ In Stock
$1.83 / Unit
View Datasheet →PIC16F628-20/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F627A-I/SS
✅ Drop-In✓ In Stock
$1.12 / Unit
View Datasheet →PIC16F627T-20/SS Maximum Ratings & Electrical Characteristics
| Product Family | PIC16F62X |
| Core Architecture | 8-bit RISC Harvard |
| Program Memory (Flash) | 1.75 KB (1K x 14) |
| Data SRAM | 224 bytes |
| Data EEPROM | 128 bytes |
| Maximum Clock Frequency | 20 MHz |
| Instruction Cycle Time | 200 ns at 20 MHz |
| Operating Voltage (Vdd) | 4.5 V to 5.5 V |
| I/O Pins | 16 (bidirectional, individually programmable) |
| Analog Comparators | 2 (with programmable on-chip VREF) |
| USART | 1 (addressable) |
| CCP Module | 1 (Capture/Compare/PWM) |
| Timers | Timer0, Timer1, Timer2 with WDT |
| Package | 20-pin SSOP (5.30 mm body width, 0.65 mm pitch) |
| Operating Temperature Range | 0C to +70C (commercial grade) |
| Programming Method | ICSP (In-Circuit Serial Programming) |
| Instruction Set | 35 instructions |
| Brown-out Detect (BOD) | Yes |
| Watchdog Timer | Yes (with dedicated on-chip RC oscillator) |
| Power-on Reset (POR) | Yes |
| Power-up Timer (PWRT) | Yes |
| Oscillator Start-up Timer (OST) | Yes |
| Internal Oscillator | 4 MHz RC (selectable) |
| LED Sink/Source Current | High-current capable per pin |
| Weak Pull-ups on PORTB | Programmable |
PIC16F627T-20/SS Pin Configuration
| Pin 1 | RA5/AN4/T1CKI — Bidirectional I/O / Analog input 4 / Timer1 clock input |
| Pin 2 | RA4/AN3/TOCKI — Bidirectional I/O / Analog input 3 / Timer0 clock input |
| Pin 3 | RA3/AN2/CMP1 — Bidirectional I/O / Analog input 2 / Comparator1 output |
| Pin 4 | RA2/AN1/VREF — Bidirectional I/O / Analog input 1 / Voltage reference |
| Pin 5 | RA1/AN1 — Bidirectional I/O / Analog input 1 |
| Pin 6 | RA0/AN0 — Bidirectional I/O / Analog input 0 |
| Pin 7 | OSC1/CLKIN — Oscillator input / external clock input |
| Pin 8 | OSC2/CLKOUT — Oscillator output / clock output |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Positive supply voltage (4.5 V to 5.5 V) |
| Pin 11 | RB7/PGD — Bidirectional I/O / ICSP data |
| Pin 12 | RB6/PGC — Bidirectional I/O / ICSP clock |
| Pin 13 | RB5 — Bidirectional I/O |
| Pin 14 | RB4 — Bidirectional I/O |
| Pin 15 | RB3/CCP1 — Bidirectional I/O / CCP1 module |
| Pin 16 | RB2/RX/DT — Bidirectional I/O / USART RX / DT |
| Pin 17 | RB1/TX/CK — Bidirectional I/O / USART TX / CK |
| Pin 18 | RB0/INT — Bidirectional I/O / External interrupt |
| Pin 19 | RA7/OSC1 — Bidirectional I/O / alternate OSC1 |
| Pin 20 | RA6/OSC2 — Bidirectional I/O / alternate OSC2 |
Typical Applications
PIC16F627T-20/SS is suitable for 6 applications: Consumer Remote Control, LED Lighting Controller, Small Motor Control Board, Sensor Interface Node, Appliance Front Panel Controller, Battery-Powered Instrument.
Consumer Remote Control
The PIC16F627T-20/SS is well suited for low-cost infrared remote controls because its 1.75 KB Flash holds a complete IR protocol stack (RC5, NEC, or proprietary) and the 20 MHz instruction cycle supports precise 38 kHz carrier generation with sub-microsecond timing accuracy. The integrated analog comparators can directly sense battery voltage for low-battery indication without an external ADC, while the high-current I/O pins drive IR LEDs directly without buffering transistors. Its 16 I/O pins accommodate a 4x4 key matrix, status LEDs, and an IR emitter. The commercial 0C to +70C range covers indoor living-room environments, and the wide 4.5 V to 5.5 V supply tolerates fresh alkaline cells and discharged cells equally. Cost-sensitive remote designs benefit from the internal 4 MHz RC oscillator, eliminating the external crystal.
Recommended
LED Lighting Controller
The PIC16F627T-20/SS provides effective PWM dimming control for RGB or white LED fixtures because the integrated CCP module delivers a hardware PWM channel up to the device's 20 MHz instruction rate, enabling flicker-free dimming with 10-bit resolution or better. The two analog comparators can implement current-sense feedback for constant-current LED drivers, and the high-current sink/source I/O pins can drive medium-brightness LEDs directly without external MOSFETs. With 1.75 KB Flash, lighting designers have enough headroom for DMX, DALI, or proprietary color-mixing firmware. The wide 5 V supply simplifies integration with constant-current LED driver ICs, and the SSOP-20 footprint fits beneath the LED board for space-constrained fixtures. Brown-out detection protects the LED array from supply glitches.
Recommended
Small Motor Control Board
The PIC16F627T-20/SS drives small brushed DC or stepper motors via PWM from the CCP module, with the 20 MHz instruction rate supporting 20 kHz PWM frequencies that place switching noise above the audible range for quiet operation. Its two analog comparators implement current-limit and back-EMF sensing without external op-amps, while the USART enables communication with a host controller or debug terminal. The 16 I/O pins provide direction-control lines, limit-switch inputs, and tachometer feedback channels. Programmable weak pull-ups on PORTB reduce BOM by eliminating external resistors for switch inputs. The industrial-temperature option (PIC16F627A-I/SS) extends operating range for under-hood or factory-floor environments.
Recommended
Sensor Interface Node
The PIC16F627T-20/SS functions as a low-power sensor node reading temperature, humidity, or digital switch inputs, because the integrated analog comparators can directly threshold a resistive sensor without an external ADC. The 128-byte EEPROM stores calibration constants and node identity across power cycles, while the USART delivers formatted sensor data over RS-232, RS-485, or a simple UART link. The internal 4 MHz RC oscillator eliminates external crystals for cost-sensitive sensor modules. With 1.75 KB Flash, sensor manufacturers can implement linearization tables, hysteresis, and alarm thresholds directly on-chip. The 224-byte SRAM is sufficient for sensor averaging and protocol buffers.
Recommended
Appliance Front Panel Controller
The PIC16F627T-20/SS controls user interfaces in washing machines, microwave ovens, and small kitchen appliances, because its 16 I/O pins can scan a 4x4 keypad and drive a multiplexed 7-segment or character LCD without external logic. The integrated USART interfaces with the main appliance controller for status reporting, while the high-current I/O pins directly drive status LEDs and relay coils. Programmable weak pull-ups on PORTB simplify keypad wiring. The 1.75 KB Flash holds complete user-interface state machines and timing logic, while the 128-byte EEPROM retains user settings (program, timer, etc.) across power cycles. Brown-out detection ensures clean reset on power glitches.
Recommended
Battery-Powered Instrument
The PIC16F627T-20/SS powers handheld measurement instruments such as digital thermometers, tachometers, and portable signal sources, where its wide 4.5 V to 5.5 V supply tolerates three alkaline or NiMH cells with simple regulation. The internal 4 MHz RC oscillator minimizes quiescent current by removing external oscillator drive, and the integrated comparators implement direct sensor-threshold detection. With 1.75 KB Flash, instrument designers implement calibration, linearization, and display routines without external memory. The SSOP-20 footprint fits compact handheld enclosures. The PIC16F627AT-I/SS variant is recommended for outdoor measurement where temperature swings exceed the commercial range.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F627T-20/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F627-20/SS | PIC16F627AT-I/SS | PIC16F627T-04/SS | PIC16F628-20/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-20 | SSOP-20 (same) | SSOP-20 (same) | SSOP-20 (same) | SSOP-20 (same) |
| Program Memory (Flash) | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB | 2 KB |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 20 MHz |
| Operating Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Operating Temperature | 0C to +70C | 0C to +70C | -40C to +85C | 0C to +70C | 0C to +70C |
| Silicon Revision | Original | Original | A (improved) | Original | 628 variant |
| Packaging Form | Tape & Reel | Tube | Tube | Tape & Reel | Tube |
Key Differentiators
- Integrated analog comparators with programmable voltage reference (vs PIC16F628-20/SS)
- Tape-and-reel packaging for SMT assembly (vs PIC16F627-20/SS)
- Original silicon revision with longest firmware ecosystem (vs PIC16F627AT-I/SS)
Design Notes
The PIC16F627T-20/SS operates from 4.5 V to 5.5 V and integrates Brown-out Detect (BOD), Power-on Reset (POR), Power-up Timer (PWRT), and Oscillator Start-up Timer (OST) for reliable power-on behavior. According to the Microchip datasheet, the BOD threshold is configurable and the PWRT adds a fixed 72 ms delay before code execution begins, allowing Vdd to stabilize. For battery-powered designs, the internal 4 MHz RC oscillator draws less quiescent current than an external crystal and frees the OSC1/OSC2 pins for general I/O use. Decouple Vdd with a 100 nF ceramic capacitor placed within 5 mm of the pin.
Do not apply voltage below 4.5 V or above 5.5 V to Vdd; the Flash read path is not guaranteed outside this range and may execute garbage instructions. The 'T-20' suffix indicates a 20 MHz grade - substituting the 04 grade in a 20 MHz design will silently reduce instruction throughput by 5x. When migrating to PIC16F627A (silicon revision A) verify that the errata list is reviewed, as the newer revision removes several documented bugs. ICSP programming uses pins RB6 (PGC) and RB7 (PGD); ensure these pins are not pulled low at reset or programming will fail.
Place the Vdd decoupling capacitor (100 nF ceramic) within 5 mm of pin 10, and add a bulk 10 uF tantalum or ceramic capacitor nearby for switching load transients. Keep the ICSP traces (RB6/PGC, RB7/PGD) short and isolated from high-current traces to avoid programming failures in-circuit. If using the analog comparators, route the analog input traces away from digital switching signals and place a ground guard ring around sensitive analog pins (RA0-RA3). The SSOP-20 thermal pad is not present on this package, so no additional thermal copper is required.
Compliance Information
Lead-free and halogen-free per Microchip product page. Not AEC-Q100 qualified (consumer/industrial grade only); for automotive applications use PIC16F627AT-I/SS or consult Microchip automotive-grade portfolio.
