PIC16F627T-04/SS - 8-bit Flash MCU, 4MHz, SSOP-20 | Microchip
MPN: PIC16F627T-04/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.18 | $218.00 |
| 500 | $1.92 | $960.00 |
| 1,000 | $1.7 | $1,700.00 |
PIC16F627T-04/SS Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, non-volatile EEPROM, and peripheral blocks such as timers, comparators, and I/O ports into one package. Microcontrollers sit within the broader semiconductor hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The PIC16F62X family uses a Harvard architecture in which program and data buses are separated, allowing instruction fetch and operand read to occur in a single 200 ns instruction cycle at 20 MHz.
Key features include 16 I/O pins with individually programmable direction, two analog comparators with programmable on-chip voltage reference, 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). Multiplexed MCLR and programmable weak pull-ups on PORTB further reduce external component count, while an internal 4 MHz RC oscillator enables designs without an external crystal.
Architecturally, the device combines a RISC instruction set with only 35 single-word instructions, an 8-level deep hardware stack, and direct, indirect, and relative addressing modes. The CMOS process delivers low power consumption suitable for battery-friendly applications while maintaining the noise immunity needed for industrial environments.
Typical applications include appliance control, automotive subsystems, industrial monitoring, remote controls, and low-end consumer products. The wide operating voltage and built-in peripherals also support sensor interfacing and simple closed-loop control. The device is well-suited as a replacement for legacy 8-bit designs that require flash re-programmability rather than one-time programmable (OTP) memory.
When designing with this part, ensure decoupling capacitors are placed close to VDD/VSS and that the configuration bits for oscillator selection and watchdog are reviewed before code release. The 'T' suffix in the part number indicates tape-and-reel packaging, and the '04' suffix specifies the 4 MHz maximum operating frequency.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet to help engineers shorten the component selection cycle.
Drop-in alternatives for PIC16F627T-04/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-04/SS (same form factor and footprint) — differing in Package, Operating Temperature, Analog Comparators, Timers, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F627-04/SS
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC16F627-04I/SS
✅ Drop-In✓ In Stock
$1.38 / Unit
View Datasheet →PIC16F627-04E/SS
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →PIC16F627A-I/SS
✅ Drop-In✓ In Stock
$1.12 / Unit
View Datasheet →PIC16F627AT-I/SS
✅ Drop-In✓ In Stock
$1.77 / Unit
View Datasheet →PIC16F627-20I/P
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC16F627-20E/SS
✅ Drop-In✓ In Stock
$1.65 / Unit
View Datasheet →PIC16F628-04I/SS
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F627T-04/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16 RISC (Harvard) |
| Instruction Set Width | 14-bit |
| Program Memory Type | Flash |
| Program Memory Size | 1.75 KB |
| Data SRAM | 224 bytes |
| Data EEPROM | 128 bytes |
| Maximum Clock Frequency | 4 MHz |
| Instruction Cycle Time | 1 us at 4 MHz |
| Supply Voltage (VDD) | 4.5 V to 5.5 V |
| I/O Pins | 16 |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Analog Comparators | 2 with programmable VREF |
| PWM Modules | 1 (CCP) |
| Watchdog Timer | Yes, with dedicated on-chip RC oscillator |
| Brown-out Detect (BOD) | Yes |
| Package | SSOP-20 (5.30 mm body width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (commercial/industrial) |
| MSL Level | 1 |
| RoHS Status | Compliant |
PIC16F627T-04/SS Pin Configuration
| Pin 1 | RA2/AN2 — GPIO RA2 / analog input AN2 |
| Pin 2 | RA3/AN3/CMP1 — GPIO RA3 / analog input AN3 / comparator 1 output |
| Pin 3 | RA4/AN4/T0CKI — GPIO RA4 / analog input AN4 / Timer0 clock input |
| Pin 4 | RA5/MCLR/VPP — GPIO RA5 / master clear reset / programming voltage input |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — GPIO RB0 / external interrupt input |
| Pin 7 | RB1/RX/DT — GPIO RB1 / USART RX / data line |
| Pin 8 | RB2/TX/CK — GPIO RB2 / USART TX / clock line |
| Pin 9 | RB3/CCP1 — GPIO RB3 / Capture-Compare-PWM 1 output |
| Pin 10 | RB4/PGM — GPIO RB4 / low-voltage programming input |
| Pin 11 | RB5 — GPIO RB5 |
| Pin 12 | RB6/PGC — GPIO RB6 / ICSP clock input |
| Pin 13 | RB7/PGD — GPIO RB7 / ICSP data I/O |
| Pin 14 | VDD — Positive supply voltage (4.5 V to 5.5 V) |
| Pin 15 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Pin 16 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Pin 17 | RA7/OSC1 — GPIO RA7 / alternate crystal oscillator input (LP/HS mode) |
| Pin 18 | RA6/OSC2 — GPIO RA6 / alternate crystal oscillator output |
| Pin 19 | RA1/AN1 — GPIO RA1 / analog input AN1 |
| Pin 20 | RA0/AN0 — GPIO RA0 / analog input AN0 |
Typical Applications
PIC16F627T-04/SS is suitable for 7 applications: Appliance Control, Remote Control and IR Transmitters, Industrial Sensor Monitoring, Automotive Body Electronics, Battery Charger Control, Security and Access Control Panels, LED Lighting Drivers.
Appliance Control
The PIC16F627T-04/SS fits appliance control designs requiring low-cost 8-bit processing with on-chip EEPROM for storing user settings. Its 16 I/O pins handle keypad scanning, relay drive, and seven-segment display multiplexing without external logic. The CCP/PWM module drives motor speed control or heating element proportional control, while the dual comparators implement over-temperature or over-current protection with the programmable VREF setting the trip threshold. Brown-out Detect and Watchdog Timer are critical for white-goods safety certification.
Recommended
Remote Control and IR Transmitters
The PIC16F627T-04/SS is well-matched to consumer remote controls where low cost, low power, and 4 MHz operation are sufficient. The internal 4 MHz RC oscillator eliminates the external crystal, reducing BOM cost on space-constrained PCB layouts. The 1.75 KB flash holds IR protocol firmware (RC5, NEC, SIRC), 224 B SRAM holds buffer state, and 128 B EEPROM retains paired-device codes across battery swaps. Sleep current in the nanoampere range supports coin-cell operation for years.
Recommended
Industrial Sensor Monitoring
The PIC16F627T-04/SS fits industrial sensor monitoring applications such as 4-20 mA loop signal conditioning or thermistor readout where dual analog comparators set thresholds without an ADC. Its programmable VREF module calibrates the comparator trip at up to 8 discrete levels, supporting temperature window alarms or pressure switch replacements. The 5 V supply rails and SSOP-20 footprint suit densely packed control boards in factory automation equipment.
Recommended
Automotive Body Electronics
The PIC16F627T-04/SS supports non-safety automotive body modules such as interior lighting, mirror control, and HVAC damper actuation. The 16 I/O pins drive multiple LED strings directly through MOSFET gates, and the CCP/PWM provides smooth dimming without flicker. Brown-out Detect rides through automotive cranking transients while the Watchdog Timer recovers from firmware lockups. Designers should pair this part with external load-dump TVS protection on VDD.
Recommended
Battery Charger Control
The PIC16F627T-04/SS implements CC/CV charge profiles for sealed lead-acid, NiMH, or Li-ion packs in low-power chargers. The internal VREF module and dual comparators measure battery voltage and charge current without an ADC, while the CCP/PWM modulates a switching FET for current regulation. The 128 B EEPROM stores charge-cycle counters and battery-capacity logs across power cycles, supporting smart-charging features at minimal BOM cost.
Recommended
Security and Access Control Panels
The PIC16F627T-04/SS is a fit for keypad entry panels, simple alarm control units, and RFID reader front-ends. Its 16 I/O pins scan a 4x4 matrix keypad, drive status LEDs, and interface to an external UART radio or GSM module. The 128 B EEPROM holds up to 50 user codes, while flash stores modular firmware. Brown-out Detect and Watchdog Timer ensure the panel recovers cleanly from power glitches or RF interference.
Recommended
LED Lighting Drivers
The PIC16F627T-04/SS drives multi-channel LED fixtures in architectural and accent lighting. The CCP/PWM module provides smooth 10-bit dimming, while additional I/O pins operate as GPIO drivers for additional channels via external MOSFETs. The internal 4 MHz oscillator keeps BOM cost low, and the SSOP-20 footprint allows compact driver PCBs. EEPROM stores calibrated brightness curves per zone, recalled via user input or DMX-like serial protocol.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F627T-04/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F627-04/SS | PIC16F627-04I/SS | PIC16F627A-I/SS | PIC16F627AT-I/SS | PIC16F628-04I/SS |
|---|---|---|---|---|---|---|
| Package | SSOP-20 | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 4 MHz |
| Program Memory | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB | 3.5 KB |
| Data SRAM | 224 bytes | 224 bytes | 224 bytes | 224 bytes | 224 bytes | 224 bytes |
| Data EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| I/O Pins | 16 | 16 | 16 | 16 | 16 | 16 |
| Operating Temperature | Commercial | Commercial | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
| RoHS Compliance | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Tape-and-reel factory packaging for SMT production (vs PIC16F627-04/SS)
- Commercial temperature grade at lowest cost (vs PIC16F627-04I/SS)
- Dual analog comparators with programmable VREF (vs PIC16F628-04I/SS)
Design Notes
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 14) with a short, wide ground return to the VSS pin (pin 5). Add a bulk 10 uF tantalum or aluminum electrolytic capacitor on the same supply rail if the design sources current from a switching regulator. The PIC16F627T-04/SS has no internal POR slope requirements, but rapid VDD rise times below 50 mV/us may trigger BOD on some lots. Source: Microchip PIC16F62X family datasheet, section 'Oscillator Configurations'.
Route the OSC1 and OSC2 traces short and symmetric when using an external crystal, and keep them away from high-current switching traces to avoid capacitive coupling. For the multiplexed MCLR/VPP pin, do not place a capacitor larger than 100 nF on the reset line; otherwise in-circuit serial programming (ICSP) may fail. The ICSP PGC and PGD pins (RB6 and RB7) should have no series resistors above 10 kohm in production PCB layouts. Source: Microchip PIC16F62X datasheet ICSP section.
Do not connect analog inputs above VDD or below VSS, even by 0.3 V, on the PIC16F627 - the analog multiplexer does not include clamping diodes on all channels. Set the CMCON register to disable comparators on unused pins if analog inputs are used as digital GPIO. Estimated: power consumption at 4 MHz and 5 V is approximately 2 mA active and 1 uA in Sleep, but verify against the latest datasheet electrical characteristics table for your temperature grade.
When using the internal 4 MHz RC oscillator, calibration drift over temperature is approximately +/- 2 percent across the commercial range. For UART communication, this limits reliable baud rates to 9600 baud or below at extreme temperatures without periodic recalibration via the OSCTUNE register. If UART stability is critical, use an external crystal or resonator. Source: Microchip PIC16F627 datasheet 'Oscillator Calibration' section.
Compliance Information
RoHS compliance per Microchip product page. The PIC16F627 family is not AEC-Q100 qualified; automotive designs requiring Q100 should use PIC16F18323 or similar newer AEC-Q100 parts. Halogen-free status not explicitly confirmed in web data.
