PIC12F1571-I/P - 8-bit MCU, 32MHz, 1.75KB Flash, 8-PDIP | Microchip
MPN: PIC12F1571-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.13 | $1.13 |
| 10 | $1.02 | $10.20 |
| 100 | $0.91 | $91.00 |
| 500 | $0.82 | $410.00 |
| 1,000 | $0.74 | $740.00 |
PIC12F1571-I/P Overview
An 8-bit microcontroller is a single-chip computer that integrates a CPU, RAM, non-volatile program memory (Flash), and I/O peripherals. PIC microcontrollers use a Harvard RISC architecture with separate program and data buses, executing one instruction per clock cycle (excluding branches) - which is why the PIC12F1571-I/P achieves 32 MIPS at 32MHz CPU clock. Microcontroller ICs sit at the hierarchy of: MCU -> 8-bit MCU -> PIC12 family -> PIC12F157x sub-family. The 8-pin PDIP form factor is part of the DIP (Dual In-line Package) family of through-hole surface-mount predecessors, ideal for breadboarding and hobbyist prototyping.
Key features include three independent 16-bit Pulse-Width Modulation (PWM) channels with fine resolution for LED dimming, motor control, and switch-mode power supply (SMPS) feedback; a 10-bit Analog-to-Digital Converter (ADC) with up to 4 channels; a 5-bit Digital-to-Analog Converter (DAC); a comparator with selectable reference; on-chip 32MHz internal oscillator; and 128-byte data SRAM. The XLP feature provides nanoWatt sleep currents below 20 nA typical in sleep mode, enabling battery-powered applications that last years on a single coin cell.
The PIC12F1571-I/P uses Microchip's enhanced mid-range 14-bit instruction set, which supports interrupts with hardware context saving, an 8-deep hardware stack, and direct/indirect/relative addressing modes. The device is programmed and debugged through In-Circuit Serial Programming (ICSP) via two pins (ICSPCLK/ICSPDAT), requiring no separate programmer port. The integrated 32MHz internal oscillator with ±2% accuracy over voltage and temperature eliminates the need for an external crystal in most designs.
Typical applications include high-resolution LED lighting and color mixing, stepper motor and DC motor speed control via the 16-bit PWMs, small switch-mode power supplies, battery chargers, remote controls, IoT sensor nodes, and any space-constrained low-cost 8-pin embedded design. The combination of three 16-bit PWMs and a 5-bit DAC makes it particularly well-suited for generating complex analog waveforms or driving RGBW LEDs with fine intensity control.
When designing with this device, note that only 6 of the 8 pins are usable as general-purpose I/O because two pins are dedicated to ICSP. For production programming in-circuit, allow for the ICSP header. The device supports 2.3V to 5.5V operation, so a single 3.3V or 5V rail is sufficient.
This page synthesizes distributor pricing from DigiKey/Mouser/LCSC, parametric drop-in alternatives, design notes, and a comparison table - practical engineering context not found on the standalone manufacturer datasheet.
Drop-in alternatives for PIC12F1571-I/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 PIC12F1571-I/P (same form factor and footprint) — differing in Timers, Mounting Type, Operating Temperature, Comparators, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F1572-I/P
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →PIC12F1571-E/P
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →PIC12F1501-I/P
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →PIC12F1571-I/MS
✅ Drop-In✓ In Stock
$0.58 / Unit
View Datasheet →PIC12F1571-I/P Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC enhanced mid-range |
| CPU Speed | 32 MHz (32 MIPS) |
| Program Memory (Flash) | 1.75 KB (1K x 14 words) |
| Data SRAM | 128 bytes |
| EEPROM | None |
| I/O Pins | 6 |
| ADC | 10-bit, up to 4 channels |
| DAC | 5-bit, 1 channel |
| PWM Channels | 3 x 16-bit independent |
| Comparators | 1 with selectable reference |
| Timers | 2 x 8-bit, 1 x 16-bit |
| Operating Voltage | 2.3 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Internal Oscillator | 32 MHz, ±2% accuracy |
| Package | 8-pin PDIP (P) |
| Mounting Type | Through-Hole |
| Programming/Debug | ICSP (2-wire) |
| Low-Power Feature | XLP (eXtreme Low-Power) |
| RoHS Status | Compliant |
PIC12F1571-I/P Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.3V to 5.5V) |
| Pin 2 | RA5/ICSPCLK — GPIO / ICSP programming clock |
| Pin 3 | RA4/AN3/CMP1/ICSPDAT — GPIO / ADC ch3 / Comparator / ICSP programming data |
| Pin 4 | RA3/MCLR/VPP — GPIO / Master Clear reset / ICSP programming voltage |
| Pin 5 | RA2/AN2/T0CKI/CMP1OUT — GPIO / ADC ch2 / Timer0 clock in / Comparator output |
| Pin 6 | RA1/AN1/CMP1IN+/VREF+ — GPIO / ADC ch1 / Comparator non-inverting input / Voltage reference + |
| Pin 7 | RA0/AN0/CMP1IN-/DACOUT — GPIO / ADC ch0 / Comparator inverting input / 5-bit DAC output |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12F1571-I/P is suitable for 6 applications: High-Resolution LED Lighting and Dimming, Stepper Motor and DC Motor Speed Control, Switch-Mode Power Supply (SMPS) Feedback, Battery-Powered IoT Sensor Nodes, Remote Control and Consumer IR/RF Transmitters, Small Appliance and Hobbyist Embedded Control.
High-Resolution LED Lighting and Dimming
The PIC12F1571-I/P is ideal for high-resolution LED lighting because its three independent 16-bit PWM channels deliver duty-cycle resolution finer than 0.002%, far beyond the human eye's ability to perceive step changes. Each PWM can drive a separate LED string (red, green, blue, or white) for accurate color mixing in RGB or RGBW fixtures, with the 5-bit DAC providing a precise bias reference. At 32MHz CPU, the device executes color-space conversion (HSL to RGB) and gamma correction in real time. Operating from 2.3V-5.5V, it can run directly from a single lithium cell or a 5V USB supply, while XLP sleep current below 20nA enables weeks of battery life in portable lighting products.
Recommended
Stepper Motor and DC Motor Speed Control
The PIC12F1571-I/P drives small stepper motors and DC motors through its three 16-bit PWMs, which generate smooth acceleration/deceleration ramps without CPU intervention. The 16-bit resolution supports microstepping algorithms at step rates above 10kHz, suitable for NEMA 8 to NEMA 11 stepper motors in pumps, valves, and small positioning stages. The 10-bit ADC reads back the potentiometer or rotary encoder for closed-loop control, while the comparator triggers an emergency stop on overcurrent detection. The 32MHz CPU executes sensorless BEMF commutation algorithms for small brushless DC fans used in server cooling.
Recommended
Switch-Mode Power Supply (SMPS) Feedback
The PIC12F1571-I/P implements digital SMPS feedback control via its 16-bit PWM and 10-bit ADC, replacing traditional analog UC3842 controllers. The high PWM resolution enables digital compensation and cycle-by-cycle current-mode control with bandwidth exceeding 50kHz, suitable for sub-50W isolated or non-isolated converters. The 5-bit DAC provides a programmable reference voltage, while the comparator implements hardware overcurrent protection that latches the PWM within 100ns. Operating from 5V, the MCU pairs with a gate driver such as the UCC27714 to control the primary-side MOSFET or synchronous rectifier.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC12F1571-I/P serves as the central controller in IoT sensor nodes due to its XLP nanoWatt technology with sleep current below 20nA and active current of approximately 30µA/MHz. The device wakes periodically to read a sensor via the 10-bit ADC, transmits via a sub-GHz radio such as the CC1101, then returns to sleep, achieving years of battery life from a single CR2032 coin cell. The 16-bit PWMs drive status LEDs with flicker-free dimming, and the comparator monitors battery voltage for low-battery warning. Operating from 2.3V-5.5V, the MCU tolerates direct connection to both 3V coin cells and 5V USB power sources.
Recommended
Remote Control and Consumer IR/RF Transmitters
The PIC12F1571-I/P is well-suited for handheld remote controls because its three 16-bit PWMs generate precise 38kHz carrier frequencies for IR transmission with sub-1% duty-cycle accuracy, improving range and battery efficiency. The 5-bit DAC can synthesize audio tones for acoustic pairing or beep feedback, while the comparator monitors the IR receiver for return-channel data. The 32MHz CPU executes RC5, NEC, or SIRC protocol stacks, and the XLP feature enables 1-year battery life on a pair of AAA cells. The 8-pin PDIP package simplifies through-hole assembly for low-volume consumer products.
Recommended
Small Appliance and Hobbyist Embedded Control
The PIC12F1571-I/P is a popular choice for hobbyist projects and small appliance control because of its 8-pin PDIP through-hole form factor, which is breadboard-friendly and easy to hand-solder. The 32MHz CPU and 1.75KB Flash support state-machine control of small appliances such as fans, coffee makers, and battery chargers, while the three 16-bit PWMs drive TRIAC phase-angle control or MOSFET PWM outputs. The 10-bit ADC reads temperature sensors and potentiometers, and the integrated comparator provides safety overcurrent detection. Microchip's MPLAB X IDE with the free XC8 compiler and the PICkit 4 debugger provides a complete development ecosystem.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F1571-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F1572-I/P | PIC12F1501-I/P | PIC12F1571-E/P |
|---|---|---|---|---|
| Package | 8-PDIP (P) | 8-PDIP (P) - same | 8-PDIP (P) - same | 8-PDIP (P) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Core / Architecture | 8-bit PIC enhanced mid-range | 8-bit PIC enhanced mid-range | 8-bit PIC enhanced mid-range | 8-bit PIC enhanced mid-range |
| Max CPU Speed | 32 MHz (32 MIPS) | 32 MHz | 32 MHz | 32 MHz |
| Program Flash | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB |
| Data SRAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| 16-bit PWM Channels | 3 | 3 | 0 (10-bit PWM only) | 3 |
| ADC Channels (10-bit) | 4 | 8 | 4 | 4 |
| DAC | 5-bit, 1 channel | 5-bit, 1 channel | 5-bit, 1 channel | 5-bit, 1 channel |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) |
Key Differentiators
- Three independent 16-bit PWM channels - finer duty-cycle resolution than PIC12F1501 (vs PIC12F1501-I/P)
- Drop-in upgrade path with double the ADC channels (vs PIC12F1572-I/P)
- Extended temperature grade option in same package (vs PIC12F1571-E/P)
Design Notes
Estimated: The PIC12F1571-I/P's XLP feature achieves typical sleep current below 20nA with Watchdog Timer disabled at 3V VDD, but this rises to several µA if peripherals are not gated off before sleep. Place a 100nF decoupling capacitor as close as possible to the VDD pin (pin 1) and a 10µF bulk capacitor at the board input. For battery-powered designs using a CR2032 coin cell, use the LFINTOSC at 31kHz instead of HFINTOSC to minimize active current to ~30µA/MHz.
For 8-pin PDIP through-hole designs, route the ICSP pins (RA4/ICSPCLK on pin 3, RA5 on pin 2) to a 5-pin header footprint (0.1" pitch) even if programming is done in-circuit via pogo pins in production - this simplifies engineering bring-up and field firmware updates. Keep the ICSP traces short (less than 50mm) to avoid signal integrity issues at the ICSP clock rate. The MCLR/VPP pin (pin 4) requires a 10kΩ pull-up to VDD for normal operation; do not leave it floating.
The PIC12F1571-I/P only has 6 usable I/O pins - the two ICSP pins (RA4 and RA5) are shared with ICSP programming, and in-circuit programming requires them to be accessible even if they are repurposed as GPIO in the application. Ensure that any external circuitry on RA4/RA5 does not load the ICSP signals during programming - this includes pull-down resistors to ground, which can prevent the high-level ICSPCLK signal from reaching the required 0.8×VDD threshold. For RA5 specifically, note that it is an input-only pin (no output driver) on most PIC12F157x variants.
When using the 16-bit PWM channels for LED dimming or motor control, the high switching edges (nanosecond rise time) can couple into adjacent analog signals on RA0/RA1/RA2. Keep PWM traces short and route them away from the analog ADC inputs; add a small ferrite bead or series resistor (10-100Ω) at the PWM output if EMI is a concern. The 5-bit DAC output on RA0 is a low-impedance analog signal, so do not place a PWM output on the same pin without a multiplexer.
Compliance Information
RoHS compliant per Microchip product page. Industrial operating temperature -40C to +85C. For automotive AEC-Q100 qualified PIC12F157x variants, refer to the PIC12F1571-E/P (extended temp grade) or contact Microchip for full Q100 qualification status.
