PIC12F629T-E/SN - 8-bit Flash MCU, 1.75KB, SOIC-8 | Microchip
MPN: PIC12F629T-E/SN ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.95 | $1.95 |
| 10 | $1.76 | $17.60 |
| 100 | $1.55 | $155.00 |
| 500 | $1.38 | $690.00 |
| 1,000 | $1.22 | $1,220.00 |
PIC12F629T-E/SN Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and programmable I/O peripherals. The PIC12F629 belongs to the mid-range x14 architecture family of 8-bit microcontrollers (RISC architecture -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor), targeting compact, cost-sensitive embedded applications where size and power efficiency matter more than absolute processing throughput.
Key features of the PIC12F629T-E/SN include a 10-bit ADC, one analog comparator, four 8-bit timers (Timer0/Timer1/Timer2/WDT), an internal 4 MHz oscillator, and an enhanced Flash program memory that supports in-circuit serial programming (ICSP). The device uses 35 single-word instructions, simplifying code development while maintaining the deterministic interrupt response that the PIC architecture is known for. Internal brown-out detect and power-on reset improve system reliability in industrial environments.
The PIC12F629 uses a Harvard-architecture RISC CPU with separate program and data buses, achieving one instruction per clock cycle (4 clocks per instruction cycle at 20 MHz = 5 MIPS peak). Its mid-range core offers predictable interrupt latency and supports inline assembly for time-critical routines. The internal 4 MHz oscillator eliminates external clock components in many designs, while the 20 MHz external clock input is available for timing-sensitive applications.
Typical applications include consumer electronics remote controls, small appliance controllers, sensor signal conditioning, LED driving, battery chargers, and simple IoT edge nodes. The wide 2.0V to 5.5V supply range also makes it suitable for 3.3V IoT devices powered from coin cells or USB rails.
When designing with this device, place the ICSP programming connector and a 0.1 uF decoupling capacitor near the VDD pin. The internal 4 MHz oscillator is factory calibrated to within 1 percent and is sufficient for most UART bit-timing applications when the device is not overclocked.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC12F629T-E/SN — 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 PIC12F629T-E/SN (same form factor and footprint) — differing in Package, Operating Temperature, Timers, Internal Oscillator, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F629T-I/SN
✅ Drop-In✓ In Stock
$0.82 / Unit
View Datasheet →PIC12F629-E/P
✅ Drop-In✓ In Stock
$1.2 / Unit
View Datasheet →PIC12F629-E/SN
✅ Drop-In✓ In Stock
$0.76 / Unit
View Datasheet →PIC12F629-I/MF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12F615T-I/SN
✅ Drop-In✓ In Stock
$0.83 / Unit
View Datasheet →PIC12F617-I/SN
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC12F629T-E/SN Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC mid-range 8-bit RISC |
| Program Memory | 1.75 KB (1K x 14) Flash |
| Data EEPROM | 128 bytes |
| SRAM | 64 bytes |
| Maximum Clock Frequency | 20 MHz |
| Instruction Execution Time | 200 ns at 20 MHz |
| Supply Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 6 |
| ADC | 10-bit |
| Comparators | 1 |
| Timers | 1 x 8-bit, 1 x 16-bit, 1 x 8-bit (TMR2), WDT |
| Operating Temperature Range | -40 C to +125 C (Extended) |
| Package | 8-SOIC (SN) 150 mil |
| Mounting Type | Surface Mount |
| Internal Oscillator | 4 MHz, calibrated +/-1 percent |
| Programming Method | ICSP (In-Circuit Serial Programming) |
| RoHS Status | Compliant |
| Instruction Set Size | 35 instructions |
PIC12F629T-E/SN Pin Configuration
| Pin 1 | VDD — Positive power supply |
| Pin 2 | GP5/OSC1/CLKIN — GPIO / Timer1 clock / external clock input |
| Pin 3 | GP4/OSC2/CLKOUT — GPIO / oscillator output / clock out |
| Pin 4 | GP3/MCLR/VPP — GPIO (input only) / Master Clear reset / programming voltage |
| Pin 5 | GP2/T0CKI/INT/COUT — GPIO / Timer0 clock / external interrupt / comparator output |
| Pin 6 | GP1/CIN-/ICSPCLK — GPIO / comparator inverting input / ICSP clock |
| Pin 7 | GP0/CIN+/ICSPDAT — GPIO / comparator non-inverting input / ICSP data |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12F629T-E/SN is suitable for 7 applications: Consumer Remote Control, Small Appliance Controller, Sensor Signal Conditioning, LED Driver and Controller, Battery Charger Controller, IoT Edge Node Sensor Tag, Automotive Interior Lighting.
Consumer Remote Control
The PIC12F629T-E/SN fits consumer remote controls because its 8-SOIC package and 6 I/O pins support IR LED driving, button matrix scanning, and battery monitoring within a compact PCB footprint. The 1.75KB Flash is sufficient for IR protocol encoding (NEC, RC5, Sony SIRC) and 35-instruction mid-range core keeps code size compact. With 2.0V-5.5V operation it runs directly from a 3V coin cell or 2xAA batteries, and the internal 4 MHz oscillator eliminates the need for an external resonator. Unlike larger MCUs, the PIC12F629 consumes microamps in sleep mode, extending battery life to over a year in typical remote-control duty cycles.
Recommended
Small Appliance Controller
The PIC12F629T-E/SN is well matched to small appliance controllers such as coffee makers, fans, and kitchen timers due to its 6 I/O pins, internal 4 MHz oscillator, and integrated analog comparator. The comparator enables zero-crossing detection for triac driving, while the 10-bit PWM-capable timer drives motor speed control or heating element regulation. Extended -40C to +125C operation handles the thermal environment of enclosed appliances. The 1.75KB Flash accommodates state-machine firmware with user-interface button handling, while the 128-byte EEPROM stores user settings like clock presets or fan-speed memories across power cycles.
Recommended
Sensor Signal Conditioning
For sensor signal conditioning, the PIC12F629T-E/SN uses its internal analog comparator to threshold-detect analog signals without requiring an external ADC. The 6 I/O pins connect directly to passive sensors (NTC thermistors, photoresistors, Hall sensors) via RC filtering, with the comparator generating interrupt-driven wake-up events. The wide 2.0V-5.5V supply accepts output from 3.3V or 5V sensor bridges. Mid-range core interrupt latency is deterministic at 200 ns, allowing precise event timing. Compared to a discrete op-amp + comparator circuit, the PIC12F629T-E/SN integrates the threshold logic, hysteresis control, and serial reporting in one 8-pin part.
Recommended
LED Driver and Controller
The PIC12F629T-E/SN drives LED indicators, strips, or simple animations using its 8-bit Timer2 PWM and GPIO pins. With 6 I/O, the device can PWM-drive up to 3 LED channels (paired complementary outputs) or bit-bang WS2812-style addressable LED protocols at 800 kHz from the 20 MHz clock. The 1.75KB Flash holds lookup tables for breathing effects, blink patterns, or color sequences, while 128-byte EEPROM saves user-selected brightness presets. The wide 2.0V-5.5V supply supports both 3.3V logic-level LEDs and 5V high-brightness strings directly. Unlike dedicated LED driver ICs, the PIC12F629T-E/SN allows full firmware customization for unique animation patterns.
Recommended
Battery Charger Controller
The PIC12F629T-E/SN implements simple linear or switch-mode battery charger control via its analog comparator (voltage/current sensing), Timer1 (charge timing), and GPIO (charge FET drive). The 6 I/O pins handle charger-enable input, status LED, temperature sensor via comparator, and PWM for current regulation. With 128-byte EEPROM storing charge profiles for Li-Ion, NiMH, or lead-acid chemistries, and 2.0V-5.5V operation accepting USB or solar inputs, the device fits hobby chargers and small IoT charging cradles. Mid-range deterministic interrupts ensure precise CC/CV transition timing compared to software-loop implementations on larger MCUs.
Recommended
IoT Edge Node Sensor Tag
The PIC12F629T-E/SN suits simple IoT edge nodes that wake on a sensor event, perform a measurement, and transmit via UART to a host MCU or radio. The internal 4 MHz oscillator and 2.0V-5.5V supply enable coin-cell operation (CR2032) with sleep current in microamps, extending battery life to 1-2 years in duty-cycled applications. Six I/O pins handle UART (TX only), sensor enable, wake-up interrupt, and status LED. The 1.75KB Flash holds application logic plus simple protocol stacks. Compared to WiFi/BLE SoCs, the PIC12F629T-E/SN costs a fraction and pairs well with ESP32 or nRF52 modules for hybrid edge-to-cloud designs.
Recommended
Automotive Interior Lighting
The PIC12F629T-E/SN can drive automotive interior LED lighting modules such as ambient strips, courtesy lamps, or puddle lights due to its extended -40 C to +125 C operating range and PWM capability. The 6 I/O pins support RGB LED control (3 PWM channels), one enable input from the body controller, and one diagnostic output. The 2.0V-5.5V supply accepts regulated 5V or 12V (via external LDO). While the PIC12F629T-E/SN is not AEC-Q100 qualified, automotive interior non-safety applications commonly use extended-grade industrial parts. For AEC-Q100 qualified alternatives in the same 8-SOIC footprint, the PIC12F615-I/SN or PIC16F family is recommended.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F629T-E/SN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F629T-I/SN | PIC12F629-E/P | PIC12F629-E/SN | PIC12F615T-I/SN |
|---|---|---|---|---|---|
| Package | 8-SOIC (SN) | 8-SOIC (SN) | 8-PDIP (P) | 8-SOIC (SN) | 8-SOIC (SN) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB |
| SRAM | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 64 bytes |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| ADC | None | None | None | None | 10-bit, 4 channels |
| Operating Temperature Range | -40 C to +125 C | -40 C to +85 C | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C |
| I/O Pins | 6 | 6 | 6 | 6 | 6 |
Key Differentiators
- Extended -40 C to +125 C operating temperature range in tape-and-reel packaging (vs PIC12F629T-I/SN)
- Pure comparator + GPIO design without ADC overhead (vs PIC12F615T-I/SN)
- Compact 8-SOIC footprint matches industry-standard 8-pin MCU pinout (vs PIC12F629-E/P)
Design Notes
Place a 0.1 uF decoupling capacitor as close as possible to the VDD pin (pin 1) with a trace length under 5 mm. For designs with high digital switching noise or analog comparator usage, add a second 10 uF bulk capacitor near VDD. The PIC12F629T-E/SN brown-out reset is factory-set; verify the BOR threshold in configuration bits matches your supply rail tolerance. For USB-bus-powered designs, include a ferrite bead on VDD to suppress conducted noise from the host.
Reserve the GP3/MCLR/VPP pin (pin 4) for reset and ICSP programming - it is input-only and cannot be used as a digital output. Route the ICSPDAT and ICSPCLK signals (GP0, GP1) to a programming header or test pads accessible by a Microchip PICkit or ICD programmer. Avoid long traces on GP3/MCLR to minimize EMI coupling. Keep the oscillator traces short if using an external crystal on GP4/GP5.
Configuration bits must be set explicitly in firmware - the default MCLR is enabled and the watchdog timer is disabled. The internal 4 MHz oscillator is calibrated to +/-1 percent at 25 C but may drift over temperature; for UART communication requiring +/-2 percent baud accuracy, use the 20 MHz external clock instead. Never tie GP3 directly to VDD without a pull-up resistor if MCLR is disabled in configuration bits - GP3 requires the MCLR weak pull-up to function as a reset input.
For designs using the analog comparator on GP0/GP1, keep analog traces short and shield them from digital switching lines on adjacent pins. Add 100 ohm series resistors at comparator inputs if the source impedance exceeds 10 kohm to limit input bias current effects. The comparator has a typical response time of 400 ns - adequate for threshold detection but not high-speed signal sampling. For precision analog measurements, migrate to PIC12F675 which adds a 10-bit ADC.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC16F or PIC18F automotive-grade parts for safety-critical automotive applications.
