PIC16F627T-04E/SO - 8-bit 4MHz Flash MCU 1.75KB | Microchip
MPN: PIC16F627T-04E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.42 | $34.20 |
| 100 | $2.78 | $278.00 |
| 500 | $2.4 | $1,200.00 |
| 1,000 | $2.05 | $2,050.00 |
PIC16F627T-04E/SO Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and programmable peripherals designed for embedded control tasks. The PIC16F62X family sits within Microchip's mid-range 8-bit portfolio, positioned between baseline (PIC10/12/16) and enhanced mid-range (PIC16F1xxx) families. These MCUs combine deterministic RISC execution with flash-based in-system programmability, making them ideal for cost-sensitive, low-power, real-time control applications.
Key features include power-on reset (POR), brown-out detect (BOD), watchdog timer (WDT) with dedicated on-chip RC oscillator, power-up timer (PWRT), oscillator start-up timer (OST), two analog comparators with programmable on-chip voltage reference, programmable weak pull-ups on PORTB, and a multiplexed MCLR pin. The internal comparator module supports programmable input multiplexing from device pins and the internal VREF, allowing flexible analog signal conditioning without external components.
Architecturally, the PIC16F627T-04E/SO uses a Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and data access. The 14-bit instruction word supports bit-oriented, byte-oriented, and literal operations across 35 single-word instructions. The 'E' suffix indicates the Enhanced temperature range (-40C to +125C), while the 'T' suffix denotes tape-and-reel packaging for high-volume assembly. The '04' speed grade specifies a 4MHz maximum oscillator.
Typical applications include appliance control, automotive body electronics (non-safety), industrial sensor interfaces, lighting controllers, remote controls, security systems, low-end motor control, and battery-powered instrumentation. The 16 high-current I/O pins can directly drive LEDs, eliminating driver transistors in many indicator circuits.
When designing with this MCU, allocate adequate decoupling (100nF ceramic plus bulk) close to VDD pins and ensure the MCLR pull-up is correctly configured for in-circuit serial programming. The '04' 4MHz speed grade limits instruction throughput to 5MIPS, so real-time loops should be sized accordingly; consider PIC16F628 or PIC16F88 variants if higher performance or more memory is required.
Drop-in alternatives for PIC16F627T-04E/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-04E/SO (same form factor and footprint) — differing in Package, Analog Comparators, Core Architecture, Timers, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F627T-04/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F627-04I/SO
✅ Drop-In✓ In Stock
$1.59 / Unit
View Datasheet →PIC16F627-04E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F627-04E/SS
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →PIC16F627-20/SO
✅ Drop-In✓ In Stock
$1.83 / Unit
View Datasheet →PIC16F627-04I/SS
✅ Drop-In✓ In Stock
$1.38 / Unit
View Datasheet →PIC16F627T-04E/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC RISC (Harvard), 8-bit, 14-bit instruction word |
| Maximum CPU Frequency | 4 MHz |
| Program Memory (Flash) | 1.75 KB (1K x 14) |
| Data Memory (SRAM) | 224 bytes |
| EEPROM | 128 bytes |
| I/O Pins | 16 |
| Instruction Count | 35 single-word instructions |
| Instruction Cycle Time | 200 ns @ 4 MHz |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| Analog Comparators | 2 with programmable VREF module |
| Operating Temperature Range | -40 C to +125 C (Enhanced, 'E' suffix) |
| Package | 18-SOIC (7.50 mm width) |
| Mounting Type | Surface Mount |
| Packaging Format | Tape & Reel ('T' suffix) |
| RoHS Status | Compliant (lead-free) |
PIC16F627T-04E/SO Pin Configuration
| Pin 1 | RA2/AN2 — Port A bit 2 / analog input 2 |
| Pin 2 | RA3/AN3 — Port A bit 3 / analog input 3 |
| Pin 3 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| Pin 4 | RA5/MCLR — Port A bit 5 / Master Clear (reset, active low) |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — Port B bit 0 / external interrupt |
| Pin 7 | RB1 — Port B bit 1 |
| Pin 8 | RB2 — Port B bit 2 |
| Pin 9 | RB3 — Port B bit 3 |
| Pin 10 | RB4 — Port B bit 4 |
| Pin 11 | RB5 — Port B bit 5 |
| Pin 12 | RB6/PGC — Port B bit 6 / ICSP clock |
| Pin 13 | RB7/PGD — Port B bit 7 / ICSP data |
| Pin 14 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Pin 15 | OSC1/CLKIN — Crystal oscillator input / external clock in |
| Pin 16 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Pin 17 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Pin 18 | RA1/AN1 — Port A bit 1 / analog input 1 |
Typical Applications
PIC16F627T-04E/SO is suitable for 6 applications: Appliance Control Boards, Automotive Body Electronics (Non-Safety), Industrial Sensor Interfaces, LED Lighting Controllers, Remote Control and Security Keyfobs, Battery-Powered Instrumentation.
Appliance Control Boards
The PIC16F627T-04E/SO fits washing-machine, dishwasher, and microwave control boards because its 16 high-current I/O pins can directly drive LED indicators, 7-segment displays, relay coils, and triac interfaces without external transistors. The 4 MHz oscillator yields 200 ns instruction cycles, adequate for keypad debouncing, mode sequencing, and PWM-based load control. With 1.75 KB flash and 128 B EEPROM, the part stores calibration constants and fault logs non-volitately across power cycles - critical for consumer warranty tracking. The -40C to +125C enhanced temperature range handles under-cabinet heat and motor inrush transients.
Recommended
Automotive Body Electronics (Non-Safety)
For door-lock controllers, mirror adjusters, interior lighting, and seat-position memories, the PIC16F627T-04E/SO provides 16 I/O with weak pull-ups for switch matrix scanning, two analog comparators for current sensing, and 128 B EEPROM for position memory - all in a 12 V-rugged environment via external regulators. The enhanced -40C to +125C temperature range supports under-dash and door-module thermal stress. For AEC-Q100-qualified safety functions, Microchip recommends PIC16F627AT-E/SO from the same family instead.
Recommended
Industrial Sensor Interfaces
The PIC16F627T-04E/SO serves 4-20 mA loop-powered transmitters, thermistor conditioning boards, and limit-switch multiplexers because its two on-chip analog comparators with programmable VREF allow direct sensor threshold detection without external op-amps. The 4 MHz speed grade runs 5 MIPS, sufficient for 10 ms PID loops on thermal or pressure processes. The 224 B SRAM buffers transient measurements while 128 B EEPROM retains calibration coefficients, eliminating trim pots on the production line.
Recommended
LED Lighting Controllers
In RGB color-mixing fixtures, dimmer modules, and DMX512 node boards, the PIC16F627T-04E/SO generates PWM channels across multiple I/O pins to drive MOSFET gate drivers at audio-band rates above the flicker threshold. The Harvard RISC architecture provides deterministic interrupt latency (200 ns minimum), ensuring smooth dimming transitions. The internal VREF module supplies a precision reference for current sensing without external shunt regulators, reducing BOM cost in commercial LED installations.
Recommended
Remote Control and Security Keyfobs
Battery-powered keyfobs and PIR-sensor alarm panels benefit from the PIC16F627T-04E/SO's 2.0-5.5 V operating range, which supports 2-cell CR2032 or 3-cell AAA chemistries directly. The brown-out detect (BOD) and watchdog timer (WDT) ensure recovery from low-battery brown-outs, while 128 B EEPROM stores encrypted rolling codes for garage doors and access tokens. The 35-instruction RISC core keeps firmware compact (1.75 KB flash is enough for Keeloq-compatible code) and power consumption low in sleep mode.
Recommended
Battery-Powered Instrumentation
Portable data loggers, handheld multimeters, and medical monitoring accessories use the PIC16F627T-04E/SO for its low sleep current (under 1 uA typical) and 2.0 V minimum supply, which extends battery life across 3-cell coin-cell deployments. The 128 B EEPROM stores user preferences and last-measurement history, while the two analog comparators enable direct sensor signal conditioning for thermistor, photodiode, and bridge sensors without external op-amps.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F627T-04E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F627T-04/SO | PIC16F627-04I/SO | PIC16F627-04E/SO | PIC16F627-20/SO |
|---|---|---|---|---|---|
| Package | 18-SOIC (7.50 mm) | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max CPU Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| Flash Memory | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB |
| Temperature Range | -40C to +125C (Enhanced) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +125C (Enhanced) | 0C to +70C (Commercial) |
| Packaging Media | Tape & Reel | Tape & Reel | Tube | Tube | Tube |
| SRAM | 224 B | 224 B | 224 B | 224 B | 224 B |
| EEPROM | 128 B | 128 B | 128 B | 128 B | 128 B |
Key Differentiators
- Enhanced -40C to +125C temperature range for automotive and industrial environments (vs PIC16F627T-04/SO)
- Tape & Reel format compatible with high-volume pick-and-place assembly (vs PIC16F627-04E/SO)
- On-chip dual analog comparators with programmable VREF eliminate external op-amps (vs PIC16F628T-04E/SO)
Design Notes
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (14) with a short trace to the VSS pin (5). For noisy supply rails (e.g., 12 V-derived in appliance boards), add a 10 uF bulk capacitor on the regulator output and a ferrite bead on VDD. The PIC16F627 brown-out detect (BOD) must be enabled via configuration bits to avoid undefined execution during supply droops.
The PIC16F627T-04E/SO has a maximum junction temperature of 150 C and thermal resistance of approximately 70 C/W in 18-SOIC. At full 4 MHz operation with all I/O toggling, dissipation is well below 100 mW, so no heatsink is needed. However, in enclosed fixtures (under-cabinet, automotive door modules), verify that ambient stays within the -40 C to +125 C enhanced range with adequate margin.
The MCLR pin (4) must NOT be left floating - either tie through a 10 kohm pull-up to VDD or configure as RA5 input with internal pull-up disabled. Leaving MCLR floating causes spurious resets and ICSP failure. Also note the '04' suffix caps the oscillator at 4 MHz; using a 20 MHz crystal will not boot reliably. Choose PIC16F627-20/SO if higher clock is required.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - select PIC16F627AT-E/SO variant for AEC-Q100 automotive applications.
