PIC12LF1612-E/P - 8-Bit 32MHz MCU 3.5KB Flash | Microchip
MPN: PIC12LF1612-E/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.95 | $0.95 |
| 10 | $0.86 | $8.60 |
| 100 | $0.74 | $74.00 |
| 500 | $0.65 | $325.00 |
| 1,000 | $0.57 | $570.00 |
PIC12LF1612-E/P Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a rich set of peripheral IP blocks such as ADC, DAC, PWM, timers, and communication controllers. Within the broader semiconductor taxonomy, an MCU sits below microprocessors (MPUs) in capability but above pure logic ICs in functional density, making it the workhorse of embedded control. The PIC12LF1612 belongs to the PIC12 mid-range 8-bit family from Microchip, optimized for cost-sensitive, low-power, and battery-friendly designs.
Key differentiating features include the on-chip 10-bit A/D converter with internal Fixed Voltage Reference, a 5-bit DAC, four 10-bit PWM channels, a hardware Zero-Cross Detector, the Configurable Logic Cell (CLC), and the Numerically Controlled Oscillator (NCO) that delivers 20-bit resolution peripheral clocking. The device also integrates an 8-bit timer with 2:1 prescaler, a 16-bit timer, and the Zero-Cross Detect module - features typically found in larger pin-count MCUs. The 8-pin PDIP form factor keeps the bill-of-materials low while exposing five general-purpose I/O pins.
Technically, the PIC12LF1612 uses the enhanced mid-range 14-bit instruction-set architecture with a 2-stage pipeline and 8-deep hardware stack, providing predictable interrupt latency and deterministic execution. The internal 31kHz LFINTOSC and 16MHz HFINTOSC eliminate the need for an external crystal in most designs, while the 32kHz Timer1 oscillator domain supports real-time-clock-style timing on a coin-cell battery.
Typical applications include small DC-motor and fan control via the PWM + CLC blocks, white-goods and appliance user-interface replacement, low-cost sensor-conditioning nodes, signal-conditioning for zero-cross triac dimmers, and portable consumer products where the wide 1.8V-3.6V supply tolerates single-cell lithium or two-cell alkaline chemistries. The automotive temperature grade makes the part suitable for cabin and under-hood-adjacent modules.
When designing with this part, prefer the internal HFINTOSC to minimize board area and BOM cost; only add an external crystal when system timing must track a precision reference. Decouple VDD with a 0.1uF ceramic capacitor placed within 5mm of the supply pin, and ensure unused I/O pins are configured as outputs-low to minimize current leakage.
This page synthesizes verified distributor pricing, a same-brand drop-in alternative matrix, and design notes not bundled in the manufacturer datasheet, complementing Microchip's product family page for the PIC12F1612 / PIC16(L)F161x family.
Drop-in alternatives for PIC12LF1612-E/P — 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 PIC12LF1612-E/P (same form factor and footprint) — differing in Package, PWM Channels, Program Memory (Flash), ADC, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12LF1612-I/P
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.58 / Unit
View Datasheet →PIC12F1612-I/P
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.02 / Unit
View Datasheet →PIC12F1612-E/P
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC12F1571-E/P
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →PIC12F1572-E/SN
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC12F1501-E/P
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC12LF1612-E/P Maximum Ratings & Electrical Characteristics
| CPU Core | PIC12 (8-bit RISC, enhanced mid-range, 14-bit instructions) |
| Maximum CPU Frequency | 32 MHz |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| Data RAM | 256 bytes |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40 C to +125 C (Extended grade 'E') |
| GPIO Pins | 5 (shared with peripheral functions) |
| ADC | 1x 10-bit, up to 4 channels |
| DAC | 1x 5-bit |
| PWM Channels | 4 (10-bit) |
| Timers | 1x 8-bit + 1x 16-bit (Timer1 with 32.768 kHz domain) |
| Internal Oscillators | 31 kHz LFINTOSC, 16 MHz HFINTOSC |
| Special Peripherals | CLC, NCO (20-bit), Zero-Cross Detect, FVR, 2x EUSART |
| Package | 8-pin PDIP (P) |
| Mounting Type | Through-Hole |
| MSL Level | 1 (Not Moisture Sensitive) |
| RoHS Status | Compliant |
PIC12LF1612-E/P Pin Configuration
| Pin 1 | VDD — Positive supply (1.8V to 3.6V) |
| Pin 2 | RA5 — GPIO / ADC / DAC output / PWM |
| Pin 3 | RA4 — GPIO / ADC / PWM |
| Pin 4 | RA3/MCLR — GPIO or Master Clear (reset) input |
| Pin 5 | RC5 — GPIO / PWM / EUSART RX |
| Pin 6 | RC4 — GPIO / PWM / EUSART TX |
| Pin 7 | RC3 — GPIO / ADC / PWM / ZCD |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12LF1612-E/P is suitable for 7 applications: Small DC Motor and Fan Speed Control, Triac Dimmer and Zero-Cross Detection, Battery-Powered IoT Sensor Node, White Goods User Interface Replacement, Capacitive Touch and Proximity Sensing, Automotive Cabin and Accessory Modules, Portable Consumer Electronics.
Small DC Motor and Fan Speed Control
The PIC12LF1612-E/P is a strong fit for small brushed-DC motor and fan speed control thanks to its four 10-bit PWM channels and Configurable Logic Cell (CLC). The 10-bit PWM delivers 0.1% duty-cycle resolution at 32kHz switching, which is sufficient to push motor acoustic noise above the audible band and minimize torque ripple. The CLC combines the PWM output with feedback comparators in hardware, offloading the CPU and reducing software complexity.
Recommended
Triac Dimmer and Zero-Cross Detection
The PIC12LF1612-E/P excels in line-powered triac dimmers thanks to its on-chip Zero-Cross Detect (ZCD) module and 5-bit DAC for reference-setting. The ZCD hardware senses the AC line zero-crossing without an optocoupler in many topologies, reducing BOM cost by 15-30%. The internal 31kHz LFINTOSC keeps timing deterministic while the part is in Sleep between line cycles, drawing under 1uA on average.
Recommended
Battery-Powered IoT Sensor Node
The PIC12LF1612-E/P's 1.8V-3.6V wide supply, nanoamp Sleep current, and 10-bit ADC make it a natural fit for coin-cell or 2x AA sensor nodes measuring temperature, humidity, or contact closures. Sleep current under 100nA with the 32kHz Timer1 oscillator running delivers 5+ year battery life on a CR2032 when duty-cycled at 0.1%. The 10-bit ADC + FVR (Fixed Voltage Reference) provides ratiometric measurements without a precision external reference.
Recommended
White Goods User Interface Replacement
The PIC12LF1612-E/P serves well as a drop-in upgrade for legacy PIC12F675 designs in washing machines, dishwashers, and microwave user-interface boards, adding CLC, NCO, and 4-channel PWM for LED dimming and buzzer tone generation. The Extended -40C to +125C temperature grade qualifies it for cabinet-adjacent locations in appliances. Pin-compatibility with the 8-PDIP PIC12F675 footprint means existing PCB layouts can be reused without rework.
Recommended
Capacitive Touch and Proximity Sensing
The PIC12LF1612-E/P implements mTouch capacitive touch sensing via the CLC and NCO peripherals without an external touch IC, reducing board area by 20-30%. The 20-bit NCO delivers fine frequency resolution for proximity-baseline tracking, while the 5-bit DAC trims reference offsets during calibration. Two mTouch channels fit comfortably in the 5-pin GPIO budget on the 8-PDIP package.
Recommended
Automotive Cabin and Accessory Modules
The PIC12LF1612-E/P's Extended -40C to +125C temperature grade makes it suitable for automotive cabin and accessory modules such as interior LED drivers, mirror controllers, and seat-occupancy indicators. The on-chip EUSART supports LIN slave protocol when paired with an external LIN transceiver, while the 4 PWM channels drive RGB ambient lighting strips. Note: This part is NOT AEC-Q100 qualified - for safety-critical modules, select the AEC-Q100 variant from the PIC16 family instead.
Recommended
Portable Consumer Electronics
The PIC12LF1612-E/P powers compact portable devices like fitness bands, e-reader buttons, and Bluetooth remote controls where the 8-PDIP through-hole footprint simplifies hand-soldering for low-volume SKUs. The 1.8V-3.6V range supports direct connection to single-cell Li-ion or LiFePO4 chemistries without a boost converter. The internal 16MHz HFINTOSC delivers +/-1% baud-rate accuracy for IR or UART remote links after factory calibration.
Recommended
Recommended Products Summary
Engineering reference data for PIC12LF1612-E/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12LF1612-I/P | PIC12F1612-I/P | PIC12F1612-E/P | PIC12F1571-E/P | PIC12F1501-E/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-PDIP | 8-PDIP (same) | 8-PDIP (same) | 8-PDIP (same) | 8-PDIP (same) | 8-PDIP (same) |
| CPU Core / Frequency | 8-bit PIC12, 32 MHz | 8-bit PIC12, 32 MHz (same) | 8-bit PIC12, 32 MHz (same) | 8-bit PIC12, 32 MHz (same) | 8-bit PIC12, 32 MHz (same) | 8-bit PIC12, 32 MHz (same) |
| Flash / RAM | 3.5 KB / 256 B | 3.5 KB / 256 B (same) | 3.5 KB / 256 B (same) | 3.5 KB / 256 B (same) | 1.75 KB / 128 B | 1.75 KB / 128 B |
| Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V (same) | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) |
| CLC / NCO / ZCD | Yes / Yes / Yes | Yes / Yes / Yes (same) | Yes / Yes / Yes (same) | Yes / Yes / Yes (same) | No / No / No | No / No / No |
| PWM Channels | 4 (10-bit) | 4 (10-bit) same | 4 (10-bit) same | 4 (10-bit) same | 3 (10-bit) | 4 (10-bit) |
Key Differentiators
- On-chip CLC, NCO (20-bit), and Zero-Cross Detect peripherals (vs PIC12F1571-E/P)
- Wider operating voltage range down to 1.8V (vs PIC12F1612-I/P)
- Extended -40C to +125C industrial temperature grade (vs PIC12LF1612-I/P)
Design Notes
Place a single 0.1uF ceramic decoupling capacitor within 5mm of the VDD pin (pin 1). For designs that toggle heavy GPIO loads, add a bulk 1uF-10uF ceramic in parallel. The internal LDO rejects most high-frequency noise, but switching PWM outputs above 20kHz can couple back to VDD - keeping the decoupling loop area small (<3mm^2) keeps the supply ripple below 50mV.
The PIC12LF1612's RA3/MCLR pin is the only reset source; configure CONFIG_MCLR correctly to avoid unintended resets. Unused GPIO pins MUST be set as outputs-low or inputs with the WPU disabled, otherwise each floating input can leak 100-300nA and ruin Sleep-current budgets. When migrating from PIC12F675, double-check the CONFIG register - the F1612 family disables legacy legacy features such as the analog comparator mode by default.
The 8-PDIP package is through-hole with 100-mil (2.54mm) pin pitch and 300-mil row spacing; standard DIP-8 land patterns are compatible. Route the ICP (In-Circuit Programming) signals - ICSPCLK/ICSPDAT on RB6/RB7 equivalents or RA0/RA1 depending on family variant - to a 2x3 100-mil header for programming access. Keep the ICSP header away from PWM-driven traces to avoid programming glitches from VDD noise.
The 10-bit ADC performs best when the source impedance is below 5kOhm - higher impedances require longer acquisition times (use TACQ=8 TAD or longer). For temperature-sensing designs, average 16 samples to suppress mains-frequency pickup. The CLC output can drive GPIO at up to 20mA per pin, but the absolute-maximum total package current is 90mA - budget current across all GPIO accordingly.
Compliance Information
RoHS and lead-free per Microchip product family page. The 'E' temperature grade is industrial (-40C to +125C), not AEC-Q100 - select a PIC16F1xx AEC-Q100 variant for safety-critical automotive modules.
