PIC12LF1612T-I/SN - 8-Bit 32MHz MCU 3.5KB Flash | Microchip
MPN: PIC12LF1612T-I/SN β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.92 | $0.92 |
| 10 | $0.85 | $8.50 |
| 100 | $0.76 | $76.00 |
| 500 | $0.68 | $340.00 |
| 1,000 | $0.61 | $610.00 |
| 3,300 | $0.55 | $1,815.00 |
PIC12LF1612T-I/SN Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates an 8-bit CPU, program memory (Flash/ROM), data memory (RAM), and a set of on-chip peripherals (ADC, timers, PWM, I/O). Within the broader semiconductor hierarchy, 8-bit MCUs sit under microcontrollers, which in turn belong to the embedded computing and power management-adjacent integrated circuit family. The PIC12LF1612 is part of Microchip's PIC12F/LF family - a sub-family optimised for low pin count (8 to 14 pins), low power, and small-footprint consumer/industrial applications.
Key features include 6 general-purpose I/O pins, a 10-bit Analog-to-Digital Converter (ADC), a 5-bit Digital-to-Analog Converter (DAC), multiple Capture/Compare/PWM (CCP) modules, 24-bit Signal Measurement Timer (SMT) for precise time/capture functions, Zero Cross Detection, a Configurable Logic Cell (CLC), Complementary Waveform Generator (CWG), Numerically Controlled Oscillator (NCO), and on-chip CRC plus a windowed Watchdog Timer (WWDT) for safety-critical support. The 'LF' suffix denotes the wide 1.8V-3.6V VDD range ideal for battery-powered 2xAA/coin-cell designs.
Architecturally, the PIC12LF1612 uses Microchip's enhanced mid-range 14-bit instruction set with a hardware stack and single-cycle ALU, allowing deterministic interrupt latency. The CIP (Core Independent Peripherals) like CWG, NCO, and CLC operate without CPU intervention, freeing the core for application logic and reducing firmware complexity while improving EMC behaviour.
Typical applications include small DC motor and fan control (PWM + CWG), LED lighting dimming (PWM + Zero Cross Detection), battery-powered IoT sensor nodes, fan/thermostat controllers, consumer appliances, and low-cost general-purpose embedded control boards where 8 pins and 32 MHz are sufficient.
When designing with this MCU, observe absolute maximum VDD of 4.0V and use decoupling (100 nF + 1 uF) within 3 mm of VDD/GND. The 'T' suffix denotes Tape & Reel packaging for SMT production lines.
This page synthesises distributor pricing, drop-in alternatives, and practical design notes that complement rather than duplicate the manufacturer datasheet.
Drop-in alternatives for PIC12LF1612T-I/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 PIC12LF1612T-I/SN (same form factor and footprint) β differing in Package, ADC, Operating Temperature, Core Architecture, Timers.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC12LF1612-I/SN
β Drop-Inβ In Stock
$0.45 / Unit
View Datasheet βPIC12F1612-I/SN
β Drop-Inπ Reference alternative (not in catalog)
PIC12LF1572-I/SN
β Drop-Inπ Reference alternative (not in catalog)
PIC12LF1501-I/SN
β Drop-Inπ Reference alternative (not in catalog)
PIC12LF1612-I/P
β Drop-Inβ In Stock
$0.58 / Unit
View Datasheet βPIC12LF1612-E/SN
β Drop-Inβ In Stock
$0.48 / Unit
View Datasheet βPIC12LF1612T-I/SN Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC12 (Enhanced Mid-Range 8-bit) |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| Data Memory (SRAM) | 256 bytes |
| CPU Speed | Up to 32 MHz |
| Instruction Cycle | 125 ns (at 32 MHz) |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 6 |
| ADC | 10-bit |
| DAC | 5-bit |
| Timers | Multiple 8/16-bit, plus 24-bit SMT |
| PWM / CCP | Yes (CCP + CWG) |
| Package | 8-SOIC (SN) 3.90 mm |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| Packaging | Tape & Reel (T suffix) |
| RoHS Status | Compliant |
PIC12LF1612T-I/SN Pin Configuration
| Pin 1 | VDD β Positive supply voltage (+1.8V to +3.6V) |
| Pin 2 | RA5 β Bidirectional I/O pin 5 / ADC channel |
| Pin 3 | RA4 β Bidirectional I/O pin 4 / ADC channel |
| Pin 4 | RA3/MCLR β Input only / Master Clear (reset, active-low) |
| Pin 5 | RC5 β Bidirectional I/O pin / PWM output |
| Pin 6 | RC4 β Bidirectional I/O pin / PWM output |
| Pin 7 | RC3 β Bidirectional I/O pin / ADC channel |
| Pin 8 | VSS β Ground reference |
Typical Applications
PIC12LF1612T-I/SN is suitable for 7 applications: Small DC Motor and Fan Control, LED Lighting Dimming and Driver, Battery-Powered IoT Sensor Node, Consumer Appliance Control Board, Thermostat and HVAC Controller, Automotive Interior Accessory (Non-Safety), Wearable and Fitness Device.
Small DC Motor and Fan Control
The PIC12LF1612T-I/SN's Complementary Waveform Generator (CWG) produces dead-band-controlled complementary PWM outputs ideal for driving a half-bridge MOSFET stage in 3V small DC motor and fan control. The 24-bit Signal Measurement Timer (SMT) accurately measures back-EMF period for closed-loop RPM control without CPU overhead, while Zero Cross Detection synchronises TRIAC commutation in AC fan variants. The 32 MHz CPU and 1.8V-3.6V VDD let the same firmware run from a single Li-ion or 2xAA cell, suiting PC case fans, brushless DC micro-pumps, and small appliance blowers where cost and BOM size matter.
Recommended
LED Lighting Dimming and Driver
The PIC12LF1612's CCP and PWM modules plus Zero Cross Detection (ZCD) suit phase-controlled TRIAC dimming and DC-LED PWM dimming in 1.8V-3.6V lighting designs. The Configurable Logic Cell (CLC) implements glue logic that otherwise requires external gates, shrinking BOM cost. With 256 B SRAM and 3.5 KB Flash the MCU holds small fade-curve lookup tables and supports DMX-like or button-input protocols. Compared with a PIC12LF1501, this part adds CWG and DAC for warm-white colour mixing at sub-3V battery rails.
Recommended
Battery-Powered IoT Sensor Node
At 1.8V-3.6V VDD with deep-sleep current well below 1 uA in sleep mode, the PIC12LF1612T-I/SN runs directly from a single 1.5V AA cell or 3V coin cell for years of battery life. The 10-bit ADC reads temperature, light, or humidity sensors, while the on-chip CRC plus windowed watchdog (WWDT) provide safety-critical monitoring for industrial IoT endpoints. The NCO generates precise timing signals without an external crystal, saving cost in space-constrained wireless sensor pucks. The 8-SOIC footprint fits inside 10x10 mm sensor modules.
Recommended
Consumer Appliance Control Board
For coffee machines, blenders, and small kitchen appliances, the PIC12LF1612 provides 6 GPIO pins, 10-bit ADC for thermistor reading, PWM for heater element control, and Zero Cross Detection for AC-line synchronous timing. The 32 MHz CPU executes state machines for brew profiles, while CLC handles interlocks in hardware without CPU load. With 3.5 KB Flash the MCU stores small lookup tables for temperature-to-time curves. Industrial temp grade (-40C to +85C) supports under-cabinet and garage environments.
Recommended
Thermostat and HVAC Controller
The 10-bit ADC reads multiple thermistor inputs for multi-zone thermostat control, while CWG generates complementary PWM for three-phase or DC fan speed regulation. The windowed watchdog (WWDT) and CRC support fail-safe operation required by safety-critical HVAC standards. The 1.8V-3.6V VDD range accommodates 24VAC-powered designs via a small rectifier and LDO. With 256 B SRAM the MCU holds short schedule buffers and last-state memory, while 32 MHz CPU cycles handle PID computation for temperature stability within plus/minus 0.5C.
Recommended
Automotive Interior Accessory (Non-Safety)
While not AEC-Q100 qualified, the PIC12LF1612T-I/SN operates from 1.8V-3.6V which matches the post-regulator rails commonly available in 12V automotive systems. It suits interior LED accent lighting, ambient colour controllers, USB charger status indicators, and HVAC flap motors where automotive qualification is delegated to the system-level ECU. The 8-SOIC small footprint drops into compact interior trim modules. For AEC-Q100-qualified alternatives in the same family, the PIC16F family is recommended instead.
Recommended
Wearable and Fitness Device
The 1.8V minimum VDD allows operation from a single coin-cell or rechargeable solid-state battery commonly used in fitness bands and wearables. The 6 GPIO pins drive simple LED indicators or read capacitive touch via the ADC, while CLC implements low-power pulse counting in hardware without waking the CPU. The 8-SOIC 3.90 mm body is small enough to fit on a 12x12 mm flex PCB. The 32 MHz CPU executes sensor-fusion state machines while keeping deep-sleep current at the nanoampere level.
Recommended
Recommended Products Summary
Engineering reference data for PIC12LF1612T-I/SN β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12LF1612-I/SN | PIC12F1612-I/SN | PIC12LF1572-I/SN | PIC12LF1501-I/SN | PIC12LF1612-I/P | PIC12LF1612-E/SN |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-SOIC (SN) | 8-SOIC (SN) - same | 8-SOIC (SN) - same | 8-SOIC (SN) - same | 8-SOIC (SN) - same | 8-PDIP (P) - different | 8-SOIC (SN) - same |
| Flash Memory | 3.5 KB | 3.5 KB | 3.5 KB | 7 KB | 1.75 KB | 3.5 KB | 3.5 KB |
| SRAM | 256 B | 256 B | 256 B | 256 B | 64 B | 256 B | 256 B |
| Operating Voltage (VDD) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 16 MHz | 32 MHz | 32 MHz |
| I/O Pins | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| CWG / NCO / CLC | Yes | Yes | Yes | No | No | Yes | Yes |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C |
| Qty-1 Price (USD, as of 2026-09-16) | $0.92 | $0.92 (tube) | $0.92 | $1.05 | $0.78 | $0.95 | $0.98 |
Key Differentiators
- Core Independent Peripherals (CWG, NCO, CLC) reduce firmware size and CPU load (vs PIC12LF1501-I/SN)
- 1.8V minimum VDD enables single-cell battery designs (vs PIC12F1612-I/SN)
- Tape & Reel packaging optimises SMT production lines (vs PIC12LF1612-I/SN)
Design Notes
Estimated: at 32 MHz CPU active and 3.3 V VDD, core current is approximately 3 mA typical, dropping to below 1 uA in sleep. Place a 100 nF X7R ceramic decoupling capacitor within 3 mm of the VDD pin (pin 1) and VSS (pin 8), plus a bulk 1-10 uF tantalum or ceramic on the VDD rail. For battery-powered designs using the LF variant at 1.8 V, the same decoupling is sufficient but verify ESR under load.
Route the ICSPDAT/ICSPCLK signals (typically shared with RA4/RA5 on PIC12) to a 6-pin header with 0.1-inch pitch for in-circuit programming using PICkit 3/4 or MPLAB Snap. Keep the MCLR pull-up (typically 10 kOhm to VDD) close to pin 4; do not share it with other peripherals. Add a 100 nF cap on MCLR for noise immunity. Ground plane under the MCU improves thermal and EMI behaviour.
Configuration Word bits must be set in code before the part operates correctly: oscillator selection (INTOSC vs external), WDT enable/disable, code protection, and LVP (low-voltage programming) bit. A common mistake is leaving LVP enabled in production, which makes the RA5/RA4 pins subject to ICSP interference. Set the LVP bit OFF in production Configuration Words. Also note that absolute maximum VDD is 4.0 V - never connect a 5V rail directly to the LF variant.
Place the decoupling capacitor between VDD (pin 1) and VSS (pin 8) with the shortest possible trace length (<3 mm). Keep the analog reference traces (if using ADC or DAC) away from switching PWM outputs (RC3/RC4/RC5) to avoid digital coupling into analog readings. Use a guard ring around the analog AVSS/VSS pin if applicable. The exposed pad is not present on the 8-SOIC; thermal performance is sufficient for the typical 10 mW power budget without a copper pour.
Compliance Information
RoHS and REACH compliant per Microchip product page. Lead-free and halogen-free per package material declaration. Not AEC-Q100 qualified - for automotive safety applications use PIC16F or dsPIC33 families instead. The E-suffix variant (PIC12LF1612-E/SN) extends the temperature range to +125C but does not constitute AEC-Q100 qualification.
