PIC12F629T-E/MF - 8-Pin 1.75KB Flash 8-Bit MCU | Microchip
MPN: PIC12F629T-E/MF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.42 | $14.20 |
| 100 | $1.18 | $118.00 |
| 500 | $1.04 | $520.00 |
| 1,000 | $0.92 | $920.00 |
| 3,000 | $0.81 | $2,430.00 |
PIC12F629T-E/MF Overview
What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a single-chip computer that processes data 8 bits at a time, integrating a CPU core, program memory (Flash/ROM), data memory (RAM), non-volatile storage (EEPROM), and peripherals such as timers, comparators, ADCs, and I/O ports. The PIC12F629 sits at the low end of the PIC microcontroller hierarchy: PIC10 -> PIC12 -> PIC16 -> PIC18 -> PIC24/dsPIC -> PIC32, with PIC12 targeting ultra-small pin-count applications (6-8 pins) where cost and board area dominate design priorities. The PIC12F629 is one of Microchip's Low Pin Count devices protected under U.S. Patent 5,847,450.
Key features of the PIC12F629T-E/MF include six general-purpose I/O pins, one analog comparator, an internal 4 MHz precision oscillator (calibrated to +/-1%), an MCLR reset input, and an ICSP programming/debug interface shared with GPIO. The device supports in-circuit serial programming and Microchip's ICD debug, enabling firmware updates and real-time emulation directly on the production PCB without removing the part. Extended temperature range of -40C to +125C suits industrial and AEC-Q100 automotive after-market applications, though this MPN is the industrial-grade variant (no automotive Q suffix).
The PIC12F629 uses Microchip's mid-range 14-bit instruction set architecture (a separate RISC core from the 12-bit baseline in PIC10F parts) and offers brown-out detect, watchdog timer with on-chip oscillator, power-on reset, and code protection to harden designs against firmware theft. Peripherals are mapped through a banked SFR layout with linear data memory access, and the device supports interrupt-driven or polled firmware models with a hardware stack depth of 8 levels.
Typical applications include LED lighting controllers, sensor signal conditioning, low-cost AC line interface controllers, PIR motion detectors, battery chargers, small appliance control boards, and general-purpose glue logic replacement in automotive after-market and industrial sensor front-ends. The combination of 1.75 KB Flash, 64-byte RAM, 6 GPIO, and a 10-bit-style comparator at 8-pin density is a popular footprint for cost-driven designs that still need user-upgradeable firmware.
When designing with the PIC12F629, ensure the supply rail stays within 4.5V-5.5V (this /MF variant is 5V, not the wider 2.0V-5.5V F-version), decouple VDD with a 100 nF ceramic cap close to the pin, and reserve one I/O line for ICSP clock if in-field reprogramming is required. The internal 4 MHz oscillator eliminates the external crystal cost and two pins, but cannot drive USB, UART at high baud, or precision timing applications where an external crystal is preferred.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the Microchip datasheet alone, and is built for engineers searching for PIC12F629T-E/MF datasheet, price, pinout, and equivalent part guidance.
Drop-in alternatives for PIC12F629T-E/MF β 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/MF (same form factor and footprint) β differing in Internal Oscillator, Maximum CPU Speed, Mounting Type, Operating Temperature, Package.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC12F629T-I/MF
β Drop-Inπ Reference alternative (not in catalog)
PIC12F629T-E/MD
β Drop-Inπ Reference alternative (not in catalog)
PIC12F617T-I/MF
β Drop-Inπ Reference alternative (not in catalog)
PIC12F617T-E/MF
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC12F675T-I/MF
β Drop-Inβ In Stock
$0.82 / Unit
View Datasheet βPIC12F615T-I/MF
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$0.46 / Unit
View Datasheet βPIC12F629T-E/MF Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit Flash Microcontroller (MCU) |
| Architecture | PIC12 mid-range, 14-bit instruction set, RISC |
| Program Memory (Flash) | 1.75 KB (1792 words of 14-bit) |
| Data Memory (RAM) | 64 bytes |
| EEPROM | 128 bytes |
| Maximum CPU Speed | 20 MHz (5 MIPS, 200 ns instruction cycle) |
| Supply Voltage (VDD) | 4.5 V to 5.5 V |
| I/O Pins | 6 |
| Analog Comparators | 1 |
| Internal Oscillator | 4 MHz calibrated (+/-1%) |
| Reset / Programming | MCLR, ICSP, ICD support |
| Operating Temperature | -40C to +125C (E = Extended) |
| Package | 8-pin DFN-S EP (MF), 3 mm x 3 mm, 0.90 mm height |
| Mounting Type | Surface Mount, Tape & Reel |
| AEC-Q100 | Qualified (automotive variant exists; this suffix is industrial) |
| RoHS Status | Compliant |
PIC12F629T-E/MF Pin Configuration
| Pin 1 | VDD β Positive supply voltage (4.5V-5.5V) |
| Pin 2 | GP5/OSC1/CLKIN β GPIO 5 / Oscillator input / External clock input |
| Pin 3 | GP4/OSC2/CLKOUT β GPIO 4 / Oscillator output / Clock output |
| Pin 4 | GP3/MCLR/VPP β GPIO 3 (input only) / Master Clear reset / Programming voltage |
| Pin 5 | GP2/AN2/T0CKI/COUT/INT β GPIO 2 / Analog input 2 / Timer0 clock / Comparator output / External interrupt |
| Pin 6 | GP1/AN1/CIN-/ICSPCLK β GPIO 1 / Analog input 1 / Comparator inverting / ICSP clock |
| Pin 7 | GND β Ground reference |
| Pin 8 | GP0/AN0/CIN+/ICSPDAT β GPIO 0 / Analog input 0 / Comparator non-inverting / ICSP data |
| Pin EP | EP β Exposed thermal pad - must be soldered to GND plane for thermal dissipation |
Typical Applications
PIC12F629T-E/MF is suitable for 6 applications: PIR Motion Detector Controller, LED Lighting Controller, Industrial Sensor Front-End, Battery-Powered Remote Control, Small Appliance Control Board, Automotive Aftermarket Accessory.
PIR Motion Detector Controller
The PIC12F629T-E/MF fits PIR motion detector designs because its 6 GPIO pins are sufficient for the analog PIR element, bias setting, and LED indicator drive, while the 4 MHz internal oscillator eliminates the external crystal cost that dominates BOM in commodity motion sensors. The device's single analog comparator directly interfaces to the PIR op-amp output, replacing a discrete comparator IC and reducing board area. The 1.75 KB Flash accommodates detection algorithms, sensitivity calibration, and pulse-counting logic. Operating from 4.5V-5.5V matches typical PIR power supplies fed from a 5V regulator or USB. The -40C to +125C extended temperature range ensures operation in outdoor security fixtures. Engineers should budget the 200 ns instruction cycle for any timing-critical zero-crossing detection and use the comparator interrupt for wake-from-sleep modes to minimize quiescent current.
Recommended
LED Lighting Controller
The PIC12F629T-E/MF suits entry-level LED lighting controllers because its 6 GPIO can drive multiple MOSFETs for RGB or warm-white dimming channels while the internal 4 MHz oscillator handles PWM timing without external components. The 1.75 KB Flash stores fade tables, color sequences, and remote-control command sets. The wide -40C to +125C operating range supports both indoor luminaires and outdoor architectural fixtures. Power dissipation is minimal at the part's typical 2 mA active current, easing thermal design in sealed enclosures. The 5V supply range aligns with typical LED driver rails. For designs needing DMX or DALI protocols, upgrade to PIC12F1572 for hardware PWM/CLC peripherals.
Recommended
Industrial Sensor Front-End
The PIC12F629T-E/MF is well-matched to industrial sensor front-ends that digitize threshold-based signals, perform local filtering, and output a clean logic-level or PWM result. Its 1 comparator replaces a LM393 in many designs, while the 128-byte EEPROM stores calibration coefficients and serial numbers for field-traceable units. The 64-byte RAM handles small FIFOs for de-bounced switch inputs or pulse counting. The -40C to +125C temperature range meets industrial environment specs including factory floor, HVAC, and outdoor sensor housings. ICSP programming allows firmware updates through the same I/O pins used for normal operation, simplifying in-field servicing. Engineers should use brown-out detect and watchdog timer for unattended sensor reliability.
Recommended
Battery-Powered Remote Control
The PIC12F629T-E/MF works in battery-powered remote controls where the 6 GPIO drive keypad scanning and IR LED output while the comparator monitors a low-battery threshold. The internal 4 MHz oscillator and ICSP on shared I/O pins minimize external components, allowing single-coin-cell designs at 2xAA by adding a boost converter or stepping up to 5V with a charge pump. Sleep current of <1 uA extends battery life to multi-year operation when the MCU wakes only on key-press interrupts. The 1.75 KB Flash stores IR protocol tables (RC5, NEC, SIRC) and pairing logic. The 35 single-word instructions simplify hand-coded assembly for tight timing loops in IR carrier generation at 38 kHz.
Recommended
Small Appliance Control Board
The PIC12F629T-E/MF serves as the main controller in small appliance boards (coffee makers, fans, kitchen timers) where its 6 GPIO handle relay drives, button inputs, status LEDs, and buzzer PWM. The 1.75 KB Flash fits state-machine firmware for simple appliances without needing external EEPROM. The 4.5V-5.5V supply range is compatible with rectified-mains-derived 5V rails common in appliance power supplies. The -40C to +125C operating temperature tolerates enclosed-appliance thermal environments. Hardware MCLR reset and brown-out detect protect against brown-out-induced firmware corruption during mains glitches. AEC-Q100 qualified variants (different MPN suffix) target automotive cabin accessories.
Recommended
Automotive Aftermarket Accessory
The PIC12F629T-E/MF appears in automotive aftermarket accessories (LED accent lighting controllers, alarm add-ons, OBD-II readers) where 5V supply and 8-pin density simplify retrofit designs. The AEC-Q100 grade parts in the same PIC12F629 family (different MPN suffix like -I/SN automotive variants) extend to under-hood environments, but the -E extended temperature range on this MPN suits interior cabin applications. The internal 4 MHz oscillator is robust against automotive electrical noise. The 1.75 KB Flash fits CAN-bridge snippets or LED chaser patterns. Engineers should add external TVS diodes on VDD and I/O lines because the 5V supply rail can see load-dump transients exceeding 40 V on automotive buses.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F629T-E/MF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F629T-I/MF | PIC12F629T-E/MD | PIC12F617T-I/MF | PIC12F675T-I/MF | PIC12F615T-I/MF |
|---|---|---|---|---|---|---|
| Package | 8-pin DFN-S EP (MF) 3x3 mm | 8-pin DFN-S EP (MF) 3x3 mm - same | 8-pin DFN-S EP (MF) 3x3 mm - same | 8-pin DFN-S EP (MF) 3x3 mm - same | 8-pin DFN-S EP (MF) 3x3 mm - same | 8-pin DFN-S EP (MF) 3x3 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 1.75 KB | 1.75 KB - same | 1.75 KB - same | 2 KB (+14%) | 1.75 KB - same | 1.75 KB - same |
| Data RAM | 64 bytes | 64 bytes - same | 64 bytes - same | 128 bytes (+100%) | 64 bytes - same | 64 bytes - same |
| EEPROM | 128 bytes | 128 bytes - same | 128 bytes - same | 128 bytes - same | 128 bytes - same | 128 bytes - same |
| ADC | None (1 comparator only) | None - same | None - same | 10-bit ADC | 10-bit 4-channel ADC | 10-bit ADC |
| Maximum CPU Speed | 20 MHz (5 MIPS) | 20 MHz - same | 20 MHz - same | 20 MHz - same | 20 MHz - same | 20 MHz - same |
| Supply Voltage | 4.5V to 5.5V | 4.5V to 5.5V - same | 4.5V to 5.5V - same | 2.0V to 5.5V (wider) | 4.5V to 5.5V - same | 2.0V to 5.5V (wider) |
| Operating Temperature | -40C to +125C (E = Extended) | -40C to +85C (I = Industrial) | -40C to +125C - same | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Mature PIC12 mid-range architecture with longest field-proven lifecycle (vs PIC12F617T-I/MF)
- Internal calibrated 4 MHz oscillator saves 2 I/O pins and external crystal cost (vs PIC12F675T-I/MF (which has ADC but uses same core))
- Wider -40C to +125C extended temperature vs industrial-grade alternatives (vs PIC12F629T-I/MF (industrial temperature -40C to +85C))
Design Notes
Decouple the VDD pin (pin 1) with a 100 nF X7R ceramic capacitor placed within 3 mm of the package, and add a 10 uF bulk capacitor on the same rail if the supply source is more than 25 mm away. The PIC12F629's internal 4 MHz oscillator draws approximately 1 mA active, dropping to <1 uA in sleep; bulk capacitance supports clean wake-up transients. The exposed pad (EP) must be soldered to a continuous ground copper pour of at least 25 mm squared to meet thermal specifications. For battery applications, use MCP1700/MCP1702 low-Iq LDOs to preserve quiescent current budgets.
Avoid connecting the MCLR pin (GP3/MCLR/VPP, pin 4) directly to VDD without a resistor or relying on the internal weak pull-up - external noise can corrupt reset behavior in industrial environments. Always enable the watchdog timer (WDTE configuration bit) and brown-out detect (BOREN) in the CONFIG register for unattended sensor designs. Do not use GP3 as a digital output since it is input-only; GP3 can only be used as MCLR, external interrupt, or digital input. The PIC12F629 is 5V-only; using it below 4.5V can cause Flash programming failures and erratic EEPROM writes.
Route the ICSP clock and data lines (GP1/ICSPCLK pin 6 and GP0/ICSPDAT pin 8) so that production programmers can access them without removing components, even if those pins are also used in the final application. The 3x3 mm DFN-8 footprint requires a 0.65 mm pitch land pattern; use NSMD pads with 0.3 mm solder mask expansion for reliable assembly. Avoid placing the part near switching regulator inductors to minimize noise coupling into the analog comparator input. The exposed pad requires multiple thermal vias (0.3 mm drill, 1.0 mm pitch) to the inner ground plane for proper heat sinking.
Compliance Information
RoHS and REACH compliant per Microchip product page. AEC-Q100 qualification applies to the automotive-grade PIC12F629 variants (separate MPN suffix), but the part family has been automotive-validated in multiple package options; consult Microchip for the specific AEC-Q100 MPN suffix. Lead-free and halogen-free per Microchip environmental certification.
