PIC12F1612-E/SN - 8-bit 32MHz MCU, 3.5KB Flash | Microchip
MPN: PIC12F1612-E/SN β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.95 | $0.95 |
| 10 | $0.85 | $8.50 |
| 100 | $0.78 | $78.00 |
| 500 | $0.7 | $350.00 |
| 1,000 | $0.62 | $620.00 |
PIC12F1612-E/SN Overview
What is an 8-bit microcontroller? An 8-bit microcontroller is a small, self-contained computing core on a single IC that fetches, decodes, and executes 8-bit-wide instructions from on-chip Flash memory. PIC12-series parts belong to Microchip's baseline-and-mid-range 8-bit family, positioned hierarchically below PIC16 (mid-range) and PIC18 (enhanced) parts in the broader PIC taxonomy of microcontrollers -> embedded controllers -> semiconductor ICs. The PIC12F1612's distinctive value is on-chip motor-control peripherals such as 24-bit Signal Measurement Timer (SMT), Zero-Cross Detect (ZCD), and Complementary Waveform Generator (CWG), which are uncommon in this pin-count class.
Key features include 3.5KB self-programmable Flash with 10,000 erase/write cycles, 256 bytes RAM, 256 bytes EEPROM, a 10-bit ADC with 4 channels and up to 100 ksps conversion rate, an 8-bit DAC, multiple timer modules including the 24-bit SMT for precise time measurement, and Capture/Compare/PWM (CCP) peripherals. The integrated Zero-Cross Detect simplifies AC-line sensing without external optocouplers, and the CWG generates complementary PWM waveforms for driving MOSFET half-bridges in low-power motor control.
The PIC12F1612 uses Microchip's enhanced mid-range 8-bit CPU core with a 14-bit instruction word, single-cycle execution except for branches, and a hardware stack for fast context switching. The internal 32MHz oscillator is factory calibrated to +/-1% and supports a wide operating voltage range for both battery and 5V rail applications, while the integrated 4-channel 10-bit ADC enables direct sensor interfacing without external signal conditioning.
Typical applications include small DC motor control in fans and pumps, AC-line dimming and zero-cross switching, LED lighting control with PWM and CWG outputs, battery-powered IoT sensor nodes, and general-purpose embedded control in appliances and consumer products. The combination of SMT, ZCD, and CWG peripherals in an 8-pin footprint is rare in the marketplace and is the primary reason engineers select this part over generic PIC12F alternatives.
When designing with this device, take care to bypass VDD with a 100nF ceramic capacitor placed within 5mm of the pin, and ensure MCLR is pulled high through a 10k resistor for normal operation. The internal oscillator eliminates external crystals for most uses but may not suit USB or precise-timing applications, where a PIC16F or PIC18F part with an external oscillator is preferred.
This page synthesizes distributor pricing, drop-in compatible alternatives from Microchip's PIC12 family, and practical design notes not aggregated on a single manufacturer or distributor page.
Drop-in alternatives for PIC12F1612-E/SN 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 PIC12F1612-E/SN (same form factor and footprint) β differing in Package, Program Memory (Flash), RoHS Status, ADC, Core Architecture.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC12F1612-I/SN
β Drop-Inπ Reference alternative (not in catalog)
PIC12F1612T-E/SN
β Drop-Inπ Reference alternative (not in catalog)
PIC12F1612-E/P
β Drop-Inπ Reference alternative (not in catalog)
PIC12F1572-E/SN
β Drop-Inβ In Stock
$0.78 / Unit
View Datasheet βPIC12F1501-E/SN
β Drop-Inβ In Stock
$0.58 / Unit
View Datasheet βPIC12F1612-E/SN Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC enhanced mid-range |
| Instruction Set | 14-bit RISC |
| Program Memory (Flash) | 3.5 KB (2K x 14) |
| Data RAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Max CPU Frequency | 32 MHz |
| Internal Oscillator | 32 MHz (factory calibrated) |
| Operating Voltage | 2.5 V to 5.5 V |
| I/O Pins | 6 |
| ADC | 10-bit, 4-channel, up to 100 ksps |
| DAC | 8-bit, 1-channel |
| Timers | 6 (incl. 24-bit SMT) |
| Zero-Cross Detect (ZCD) | Yes |
| Complementary Waveform Generator (CWG) | Yes |
| CCP Modules | Yes |
| Operating Temperature | -40 C to +125 C (E = extended) |
| Package | 8-pin SOIC (SN, 150-mil narrow body) |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC12F1612-E/SN Pin Configuration
| Pin 1 | RA3/MCLR β Digital I/O / Master Clear (reset) input |
| Pin 2 | RA4 β Digital I/O / ZCD output |
| Pin 3 | RA5 β Digital I/O |
| Pin 4 | VSS β Ground reference |
| Pin 5 | VDD β Positive supply voltage (2.5 V to 5.5 V) |
| Pin 6 | RA2 β Digital I/O / analog input |
| Pin 7 | RA1 β Digital I/O / analog input / ICSPCLK |
| Pin 8 | RA0 β Digital I/O / analog input / ICSPDAT |
Typical Applications
PIC12F1612-E/SN is suitable for 6 applications: Small DC Motor Control, AC-Line Zero-Cross Dimming, LED Lighting Control, Battery-Powered IoT Sensor Nodes, Appliance and Consumer Embedded Control, Complementary Half-Bridge Switching Power.
Small DC Motor Control
The PIC12F1612's integrated Complementary Waveform Generator (CWG) and 24-bit Signal Measurement Timer (SMT) make it ideal for low-power DC motor and brushed-motor control. The CWG outputs complementary PWM waveforms with programmable dead-band to drive a half-bridge of MOSFETs directly, eliminating external gate-driver logic and reducing BOM cost. With 6 I/O pins, the device can drive the half-bridge, read a tachometer or Hall-sensor input, and provide a UART or I2C debug interface. The 32 MHz internal oscillator and 10-bit ADC at 100 ksps close the speed-control loop in under 100 microseconds, suiting fans, pumps, and small appliance motors.
Recommended
AC-Line Zero-Cross Dimming
The PIC12F1612's integrated Zero-Cross Detect (ZCD) peripheral senses AC mains zero-cross events without external optocouplers or transformers, dramatically simplifying TRIAC-based lamp dimmer designs. The ZCD triggers an interrupt at each zero-cross, allowing the firmware to phase-control a TRIAC for leading-edge or trailing-edge dimming. With 3.5 KB Flash, the firmware can implement dimming curves, soft-start, and minimum-load detection for LED retrofit lamps. The 2.5V-5.5V operating range allows direct connection to a small capacitive-drop or transformer-derived supply rail.
Recommended
LED Lighting Control
The PIC12F1612 controls multi-channel LED lighting with 10-bit PWM resolution on its CCP and CWG peripherals, supporting color-mixing and brightness adjustment for smart bulbs and architectural lighting fixtures. The 8-bit DAC provides a low-frequency analog reference for current-control loops, while the 4-channel 10-bit ADC reads photodiodes, thermistors, and user potentiometers for closed-loop brightness and color-temperature control. Operating from 2.5V-5.5V supports both AC-derived and battery-powered portable LED products, and the extended -40C to +125C temperature grade handles enclosed-luminair thermal stress.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC12F1612 in low-power sleep modes (down to microamp-level currents with peripherals gated) enables battery-powered IoT sensor endpoints lasting years on a single coin cell. The 10-bit ADC reads temperature, light, or gas sensors, while the integrated 24-bit SMT measures low-frequency timing events such as pulse-counting flow meters or pulse-output utility meters. With 256 bytes of EEPROM, the device stores calibration constants and node IDs without external memory, and the 32 MHz internal oscillator allows the CPU to wake, process, and return to sleep within a few hundred microseconds for ultra-low average current.
Recommended
Appliance and Consumer Embedded Control
The PIC12F1612 is well-suited for small appliance control panels in coffee machines, blenders, washing machines, and HVAC blowers, where the 8-pin footprint and integrated peripherals reduce PCB area and BOM. The CCP modules drive TRIAC or relay outputs, the ADC reads temperature or pressure sensors, and the CWG provides dead-band-aware complementary drive for switching power stages. The extended -40C to +125C temperature grade is essential for under-cabinet appliance thermal environments, while the 256-byte EEPROM stores user settings through power cycles without external memory.
Recommended
Complementary Half-Bridge Switching Power
The PIC12F1612's Complementary Waveform Generator (CWG) provides hardware-generated complementary PWM outputs with programmable dead-band insertion, eliminating software timing jitter and CPU overhead in half-bridge and full-bridge switching converters. The ZCD peripheral enables valley-switching and quasi-resonant topologies for higher-efficiency small SMPS designs. The 32 MHz instruction rate and 10-bit ADC sample the output voltage or current fast enough for sub-microsecond control-loop updates. With 6 I/O, the device can drive two MOSFET half-bridges plus a synchronous rectifier gate, suiting 50-200W compact converters.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F1612-E/SN β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F1612-I/SN | PIC12F1612T-E/SN | PIC12F1612-E/P | PIC12F1572-E/SN | PIC12F1501-E/SN |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-8 | SOIC-8 - same | SOIC-8 - same | PDIP-8 - different footprint | SOIC-8 - same | SOIC-8 - same |
| Flash Memory | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB |
| RAM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Max CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 20 MHz |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Zero-Cross Detect (ZCD) | Yes | Yes | Yes | Yes | No | No |
| Complementary Waveform Generator (CWG) | Yes | Yes | Yes | Yes | Yes | No |
| ADC Channels | 4 | 4 | 4 | 4 | 4 | 3 |
| 24-bit SMT | Yes | Yes | Yes | Yes | Yes | No |
Key Differentiators
- On-chip Zero-Cross Detect (ZCD) eliminates external optocoupler (vs PIC12F1572-E/SN)
- Integrated 24-bit Signal Measurement Timer for precision pulse counting (vs PIC12F1501-E/SN)
- Extended -40C to +125C temperature grade available (vs PIC12F1612-I/SN)
Design Notes
Place a 100nF ceramic bypass capacitor within 5mm of the VDD pin (pin 5), connecting directly to VSS (pin 4). For designs with switching loads above 50 mA, add a bulk tantalum or electrolytic capacitor of at least 10 uF on VDD. The PIC12F1612 operates from 2.5 V to 5.5 V; below 2.5 V Flash programming voltage is not guaranteed, so use a PIC12F15xx LF part for sub-2.5V battery applications.
On the 8-pin SOIC (SN) package, route RA1/RA0 (ICSP pins 7/8) to test pads or header pins so firmware can be programmed in-circuit using Microchip's PICkit 3/4 or ICD debugger. Place MCLR pull-up resistor (10 kohm typical) close to pin 1 to avoid spurious resets in noisy environments. Keep digital switching traces away from the analog ADC inputs (RA0-RA2) to minimize crosstalk.
Do not confuse the -E (extended -40C to +125C) and -I (industrial -40C to +85C) temperature grades - they share the same datasheet but the -I grade is NOT a substitute for -E in high-temperature designs. Also, the 32 MHz internal oscillator is factory calibrated to +/-1% but may drift with temperature; for timing-sensitive applications use a PIC16F with an external crystal instead.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified (this is a commercial/industrial part - select AEC-Q100-grade PIC parts for automotive).
