PIC12F1571-I/RF - 8-bit MCU, 1.75KB Flash, 3x16-bit PWM, UDFN-8
MPN: PIC12F1571-I/RF โ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.18 | $1.18 |
| 10 | $1.06 | $10.60 |
| 100 | $0.95 | $95.00 |
| 500 | $0.86 | $430.00 |
| 1,000 | $0.72 | $720.00 |
PIC12F1571-I/RF Overview
An 8-bit PIC microcontroller is a RISC-based single-chip computer that executes one instruction per clock cycle from on-chip Flash, with a Harvard architecture separating program and data buses. The PIC12F1571 sits within the PICยฎ 12F family of small-pin-count MCUs, hierarchically classified as: microcontroller -> embedded controller -> 8-bit MCU -> PICยฎ 12F -> PIC12F157x sub-family. Its compact footprint and integrated analog peripherals make it well suited to space-constrained designs that still require precision PWM and ADC conversion.
Key features of the PIC12F1571-I/RF include three 16-bit PWMs suitable for high-resolution LED dimming and motor control, a 10-bit ADC with acquisition across multiple I/O pins, a 5-bit DAC for reference or bias generation, a comparator, on-chip oscillator, and configurable I/O. The internal 32 MHz oscillator eliminates the need for an external crystal in many designs, while the enhanced PWM module supports edge- and center-aligned modes with independent duty, period, and phase control.
The PIC12F1571 is fabricated on Microchip's standard CMOS process and uses a 14-bit instruction word; Flash memory is rated for typical endurance well above 10K erase/write cycles. The device is supported by the MPLAB X IDE and the MPLAB Code Configurator (MCC), which simplifies peripheral setup and generates peripheral-driver code for the PWM, ADC, and DAC modules.
Typical applications include RGB LED lighting control, stepper motor drivers, general-purpose power supplies, and small-form-factor sensor conditioning. The three 16-bit PWMs are particularly useful for color-mixing LED drivers and brushed-DC or low-cost stepper control where deterministic timing is critical.
Designers should consider the 8-pin constraint: most signals are multiplexed, so selecting pin functions early in the schematic phase prevents rework. The exposed thermal pad on the UDFN package must be soldered to the PCB ground pour to meet thermal and electrical performance.
This page synthesizes distributor pricing, drop-in alternatives in the same UDFN-8 footprint, and practical design notes not found in the manufacturer datasheet, all consolidated for AI-search and procurement use cases as of 2026-09-15.
Drop-in alternatives for PIC12F1571-I/RF โ 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/RF (same form factor and footprint) โ differing in ADC, Package, Maximum CPU Speed, Program Memory (Flash), Comparators.
Quick Comparison Tool โ Select alternative parts for side-by-side comparison:
PIC12F1572-I/RF
โ Drop-Inโ In Stock
$0.45 / Unit
View Datasheet โPIC12LF1571-I/RF
โ Drop-In๐ Reference alternative (not in catalog)
PIC12F1571T-I/RF
โ Drop-In โ ๏ธ ๅๆฐๅพ ้ช่ฏ๐ Reference alternative (not in catalog)
PIC12F1501-I/RF
โ Drop-In๐ Reference alternative (not in catalog)
ATTINY85-20XUR
โ Drop-In๐ Reference alternative (not in catalog)
MSP430G2101IRSA
โ Drop-In๐ Reference alternative (not in catalog)
PIC12F1571-I/RF Maximum Ratings & Electrical Characteristics
| Core | PIC 8-bit RISC (enhanced mid-range) |
| Program Memory (Flash) | 1.75 KB (1K x 14) |
| SRAM | 128 bytes |
| Maximum CPU Speed | 32 MHz (16 MIPS / 32 MHz operation) |
| Operating Voltage Range | 1.8 V to 5.5 V |
| I/O Pins | 6 |
| 16-bit PWM Channels | 3 (independent) |
| ADC | 10-bit |
| DAC | 5-bit |
| Comparators | 1 |
| Internal Oscillator | 31 kHz / 32 MHz selectable |
| Package | 8-pin UDFN (3x3 mm) with exposed pad |
| Operating Temperature | -40C to +85C (industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC12F1571-I/RF Pin Configuration
| Pin 1 | RA5 โ General purpose I/O / PWM3 output |
| Pin 2 | RA4 โ General purpose I/O / PWM2 output |
| Pin 3 | RA3 โ General purpose I/O / MCLR (reset) |
| Pin 4 | VSS โ Ground reference |
| Pin 5 | VDD โ Positive supply voltage (1.8V-5.5V) |
| Pin 6 | RA0 โ General purpose I/O / ICSPDAT |
| Pin 7 | RA1 โ General purpose I/O / ICSPCLK |
| Pin 8 | RA2 โ General purpose I/O / PWM1 output |
Typical Applications
PIC12F1571-I/RF is suitable for 6 applications: RGB LED Color-Mixing Lighting, Brushed DC Motor / Small Stepper Control, Battery-Powered Sensor Conditioning, Switch-Mode Power Supply Controller, Automotive Interior LED Driver, Smart Home Sensor / IoT Edge Node.
RGB LED Color-Mixing Lighting
The PIC12F1571-I/RF is ideally suited for RGB LED drivers because it integrates three independent 16-bit PWM channels with dedicated timers, delivering 65536-step resolution per channel for smooth color mixing. Per the Microchip PIC12F1571 datasheet, the PWMs support edge- and center-aligned modes, allowing phase-shifted control to avoid switching transients. The 5-bit DAC can provide an auxiliary analog reference or bias for LED constant-current drivers. Operating from 1.8V to 5.5V, the part fits both 3.3V microcontroller rails and 5V lighting rails without level shifters. In a typical circuit the UDFN-8 is placed near the LED connector with 100 nF and 10 uF decoupling on VDD and the exposed pad soldered to the ground pour for thermal relief.
Recommended
Brushed DC Motor / Small Stepper Control
The PIC12F1571-I/RF is well suited to small brushed DC motor and low-cost stepper control, where the three 16-bit PWMs deliver deterministic torque control with up to 32 MIPS instruction throughput for fast commutation loops. Per the Microchip datasheet, the enhanced PWM module supports independent period, duty cycle, and phase registers, allowing complementary outputs and dead-band generation for half-bridge drivers. The internal 32 MHz oscillator eliminates the external crystal in cost-sensitive designs. The UDFN-8 footprint suits space-constrained board layouts such as in-line motor controllers or small drone gimbal boards, and the 10-bit ADC enables back-EMF sensing and current monitoring when paired with a sense resistor.
Recommended
Battery-Powered Sensor Conditioning
For portable or battery-powered sensor-conditioning designs, the PIC12F1571-I/RF offers a low-power 8-bit solution in a tiny UDFN-3x3 mm footprint. According to the Microchip datasheet, the internal 31 kHz LFINTOSC and multiple sleep modes let the MCU drop to microamp-level currents between sensor reads, while the 10-bit ADC and 5-bit DAC cover typical sensor-bias and readout paths. The 1.8V to 5.5V VDD range lets the design run from a single lithium cell down to 2.0V. In a typical sensor node the MCU services a thermistor or photo-sensor on one ADC channel, drives a wake-up PWM on another, and stores calibration in Flash via the row-erasable memory architecture.
Recommended
Switch-Mode Power Supply Controller
The PIC12F1571-I/RF's three 16-bit PWMs with dedicated timers are well matched to small isolated or non-isolated SMPS control loops, such as a primary-side flyback or buck controller. Per the Microchip PIC12F1571 datasheet, the PWMs can be phase-offset to drive synchronous rectifiers and the 32 MHz core can run a digital current-mode control loop. The 10-bit ADC samples the current-sense resistor at high resolution and the on-chip comparator can implement hardware-cycle-by-cycle current limiting. In a 5W USB charger design, the UDFN-8 MCU fits on a 20x20 mm board and replaces a discrete PWM controller IC, adding I2C telemetry and programmable soft-start.
Recommended
Automotive Interior LED Driver
While the PIC12F1571-I/RF is not AEC-Q100 qualified, it is commonly used for non-safety automotive interior lighting such as ambient strips, dashboard backlights, and door-handle illumination. Per the Microchip datasheet, the industrial -40C to +85C rating covers most cabin environments, and the 16-bit PWMs enable smooth dimming with no perceptible flicker. For designs that require AEC-Q100, Microchip recommends the automotive-grade PIC16F equivalent family instead. Designers should still add reverse-battery and load-dump protection on VDD per standard automotive EMC practice, even when using non-automotive-grade MCUs.
Recommended
Smart Home Sensor / IoT Edge Node
The PIC12F1571-I/RF fits compact IoT edge nodes such as PIR occupancy sensors, smart-light controllers, or humidity monitors. The 1.75 KB Flash and 128 B SRAM are sufficient for state-machine-style sensor processing, and the 32 MHz MIPS throughput lets the MCU service PWM-driven LED feedback and UART or I2C peripherals concurrently. Per the Microchip datasheet, multiple low-power sleep modes (Doze, Idle, Sleep) combined with the LFINTOSC wake-up timer enable multi-year battery life in coin-cell powered sensor nodes. The UDFN-3x3 footprint places the entire analog front-end, MCU, and wireless co-processor footprint on a single coin-cell-sized PCB.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F1571-I/RF โ comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F1572-I/RF | PIC12LF1571-I/RF | PIC12F1571T-I/RF | PIC12F1501-I/RF |
|---|---|---|---|---|---|
| Package | 8-pin UDFN (3x3 mm) | 8-pin UDFN (3x3 mm) - same | 8-pin UDFN (3x3 mm) - same | 8-pin UDFN (3x3 mm) - same | 8-pin UDFN (3x3 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 1.75 KB | 3.5 KB | 1.75 KB | 1.75 KB | 1.75 KB |
| SRAM | 128 bytes | 256 bytes | 128 bytes | 128 bytes | 64 bytes |
| 16-bit PWM Channels | 3 | 3 | 3 | 3 | 0 (4x 10-bit PWM) |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| DAC | 5-bit | 5-bit | 5-bit | 5-bit | None |
| Maximum VDD | 5.5 V | 5.5 V | 3.6 V | 5.5 V | 5.5 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Triple 16-bit PWM for high-resolution color/motor control (vs PIC12F1501-I/RF)
- Integrated 5-bit DAC plus 10-bit ADC (vs ATTINY85-20XUR)
- Industry-standard 32 MHz MIPS core with rich tooling (vs MSP430G2101IRSA)
Design Notes
Estimated: Solder the exposed thermal pad of the UDFN-8 (RF) package directly to a continuous ground pour on the top or bottom layer, with at least 4 thermal vias stitching the pad to the internal ground plane. This both dissipates heat (theta_JA falls from ~85 C/W unsinked to ~45 C/W with proper via array) and reduces ground bounce on the ADC reference. Place 100 nF and 10 uF decoupling capacitors within 2 mm of the VDD pin (pin 5), with the smaller cap closest to the pin.
The PIC12F1571-I/RF accepts VDD from 1.8V to 5.5V per the Microchip datasheet, but the brown-out and voltage-regulator thresholds vary across this range. When operating below 2.0V, enable the BOR (brown-out reset) feature to prevent code corruption during battery end-of-life. For battery applications, configure the LFINTOSC at 31 kHz for sleep and switch to 32 MHz HFINTOSC only when an active task requires full throughput.
Pin 3 (RA3/MCLR) is shared between general-purpose I/O and the device reset function. In many low-pin-count PIC designs the MCLR function is enabled by default and the pin cannot be used as GPIO unless the MCLRE configuration bit is cleared in the configuration word. Always set the CONFIG register correctly before programming, or downstream code that expects RA3 as GPIO will not work. The ICSP pins (RA0/RA1) are also shared with GPIO and may need reconfiguration after in-circuit programming.
When using the 10-bit ADC on the PIC12F1571-I/RF, route analog signals on a dedicated analog layer or guard them with ground traces, and add a 100 nF bypass close to each ADC input pin. Per the Microchip datasheet, the ADC acquisition time is programmable; for high-impedance sources add a small series resistor and increase acquisition time to avoid incomplete sampling. The 5-bit DAC output should be buffered externally if driving low-impedance loads.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - for automotive applications migrate to a qualified PIC16F family. Halogen-free and lead-free per Microchip packaging materials declaration.
