PIC12F1571T-I/SN - 8-bit MCU, 32MHz, 1.75KB Flash | Microchip
MPN: PIC12F1571T-I/SN ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.24 | $12.40 |
| 100 | $1.02 | $102.00 |
| 500 | $0.86 | $430.00 |
| 1,000 | $0.71 | $710.00 |
PIC12F1571T-I/SN Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripheral I/O on one die. The PIC12F1571T-I/SN belongs to the 8-bit PIC10/12/16 family, which sits inside the broader microcontroller hierarchy (microcontroller -> embedded controller -> semiconductor). Its small pin count and on-chip PWM/ADC make it a sub-category of mixed-signal MCU optimized for compact, low-cost, general-purpose embedded designs.
Key features include three 16-bit PWMs with independent timers (suitable for LED lighting, stepper motor control, and digital power conversion), a 10-bit ADC with up to 6 channels, one comparator with internal reference, an enhanced mid-range 14-bit instruction set, and a wide operating voltage range. According to the Microchip datasheet, the device supports internal 32 MHz or 31 kHz oscillators, reducing external component count.
From an architecture standpoint, the PIC12F1571 uses an enhanced mid-range core with a 14-bit instruction word, a hardware multiplier, and a single-cycle hardware stack. The Harvard-style memory map separates program Flash from data RAM, and the device includes an in-circuit serial programming (ICSP) interface for in-system firmware updates.
Typical applications include high-resolution LED dimming and color-mixing, stepper and DC motor control, switched-mode power supply control loops, small sensor hubs, hobby/IoT endpoints, and consumer products that benefit from the three 16-bit PWM channels. The 8-pin SOIC footprint allows retrofit into legacy PIC12F designs while gaining the three independent 16-bit PWMs.
When designing with this device, ensure the ICSP programming header is accessible because the SOIC-8 pinout (Vdd, Vss, GP5/ICSPDAT/ICSPCLK multiplexed with other functions) restricts the available I/O after a programming pin is reserved. Place a 0.1 uF decoupling capacitor as close to Vdd as possible.
This page synthesizes distributor pricing, drop-in PIC12F alternatives, and practical design notes not found in the bare manufacturer datasheet, including parametric cross-comparisons and a curated set of pin-compatible Microchip equivalents for the PIC12F1571T-I/SN.
Drop-in alternatives for PIC12F1571T-I/SN — 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 PIC12F1571T-I/SN (same form factor and footprint) — differing in Package, MSL Level, Operating Temperature, ADC, Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F1571-I/SN
✅ Drop-In✓ In Stock
$0.6549 / Unit
View Datasheet →PIC12F1571T-I/MS
✅ Drop-In✓ In Stock
$0.46 / Unit
View Datasheet →PIC12F1571-E/SN
✅ Drop-In✓ In Stock
$0.65 / Unit
View Datasheet →PIC12F1571-I/MS
✅ Drop-In✓ In Stock
$0.58 / Unit
View Datasheet →PIC12F1572T-I/SN
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC12F1501T-I/MS
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →PIC12F1571T-I/SN Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit enhanced mid-range |
| CPU Speed | 32 MHz (max) |
| Program Memory (Flash) | 1.75 KB (1K x 14) |
| RAM | 128 bytes |
| EEPROM | 128 bytes |
| I/O Pins | 6 |
| PWM Channels | 3 x 16-bit (independent timers) |
| ADC | 10-bit, up to 6 channels |
| Comparators | 1 |
| Operating Voltage | 1.8 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Internal Oscillator | 32 MHz and 31 kHz |
| Package | SOIC-8 (SN) |
| Mounting Type | Surface Mount (Tape & Reel) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC12F1571T-I/SN Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
| Pin 2 | GP5/AN3/CIN+/PWM3/CCP1/ICSPCLK — Bidirectional I/O with analog input, comparator input, PWM3 output, and ICSP clock |
| Pin 3 | GP4/AN2/CIN-/T0CKI/PWM2/ICSPDAT — Bidirectional I/O with analog input, comparator input, timer0 clock, PWM2 output, and ICSP data |
| Pin 4 | GP3/MCLR/VPP — Bidirectional I/O (input only on this device) or Master Clear reset / programming voltage input |
| Pin 5 | GP2/AN1/COUT/PWM1/T0CKI — Bidirectional I/O with analog input, comparator output, and PWM1 output |
| Pin 6 | GP1/AN0/CIN-/ICSPCLK — Bidirectional I/O with analog input and ICSP clock alternate |
| Pin 7 | GP0/CIN+/PWM0 — Bidirectional I/O with comparator input and PWM0 output |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12F1571T-I/SN is suitable for 7 applications: High-Resolution LED Lighting Control, Stepper Motor Control, Switched-Mode Power Supply (SMPS) Control, Battery-Powered IoT Sensor Node, Consumer Toy and Hobby Electronics, Industrial Sensor Interface Module, Automotive Interior Lighting Controller.
High-Resolution LED Lighting Control
The PIC12F1571T-I/SN's three independent 16-bit PWM channels with dedicated timers deliver smooth, high-resolution dimming and color-mixing for LED strings. With 16-bit resolution per channel and up to 32 MHz CPU, the MCU can drive RGBW strips or high-CRI architectural lighting without external LED driver ICs, reducing BOM cost. Typical designs use GP0-GP2 as PWM outputs and the 10-bit ADC to sense LED current via a sense resistor, creating a closed-loop current regulator. The 1.8 V to 5.5 V supply range supports both 3.3 V logic and 5 V analog LED strings on the same PCB.
Recommended
Stepper Motor Control
The three 16-bit PWMs make the PIC12F1571T-I/SN suitable for micro-stepping a bipolar stepper motor at sub-degree resolution. Two PWMs drive a single H-bridge phase with complementary signals, while the third PWM handles the second phase or a torque-compensation channel. The 32 MHz CPU executes micro-step tables in real time, and the comparator with internal reference can detect back-EMF zero crossings for sensorless stall detection. Operating at 1.8 V minimum allows single-cell Li-ion battery power for portable stepper applications like focus rings, valves, or small linear actuators.
Recommended
Switched-Mode Power Supply (SMPS) Control
The PIC12F1571T-I/SN can serve as a low-cost digital controller for buck, boost, or flyback converters in the sub-50 W range. The three 16-bit PWMs generate complementary gate-drive signals with programmable dead time, while the 10-bit ADC samples the output voltage and current sense for closed-loop regulation. The 32 MHz CPU is fast enough to run voltage-mode or peak-current-mode control loops at 100 kHz switching frequency. Industrial-grade -40 C to +85 C operation enables outdoor lighting, telecom auxiliary rails, and appliance power supply retrofit designs.
Recommended
Battery-Powered IoT Sensor Node
The PIC12F1571T-I/SN's wide 1.8 V to 5.5 V supply range, low-power sleep modes, and 31 kHz internal oscillator allow it to run directly from a CR2032 or single-cell Li-ion battery. With most peripherals disabled, the core can sleep below 100 nA, waking periodically to read sensors via the 10-bit ADC and transmit via a companion radio. The comparator enables zero-crossing wake-up for pulse-based sensors like PIR motion detectors. The 1.75 KB Flash is sufficient for simple sensor-fusion firmware and low-power IoT protocols over GPIO bit-banging.
Recommended
Consumer Toy and Hobby Electronics
The PIC12F1571T-I/SN is a strong fit for hobby RC, educational kits, and consumer toys because the SOIC-8 footprint is hand-solderable, the 8-bit PIC core is widely supported by free MPLAB X IDE, and the three 16-bit PWMs handle servos, LEDs, and motor speeds from a single IC. The internal 32 MHz oscillator eliminates crystal cost, and the integrated comparator simplifies sensor interfaces for line-following robots or reaction timers. Toy-grade temperature range and lead-free packaging ensure compliance with consumer product safety standards.
Recommended
Industrial Sensor Interface Module
The PIC12F1571T-I/SN supports industrial 4-20 mA sensor signal conditioning with its 10-bit ADC, comparator with internal voltage reference, and 32 MHz processing headroom. The MCU digitizes analog sensor outputs, performs linearization, and outputs PWM or GPIO-based signals for downstream isolation or display. The industrial -40 C to +85 C operating range covers factory floor conditions, and the SOIC-8 package withstands conformal coating and wave soldering. Three PWM channels can drive status LEDs or analog front-end calibration voltages.
Recommended
Automotive Interior Lighting Controller
While the PIC12F1571T-I/SN is not AEC-Q100 qualified, it can drive ambient interior lighting in non-safety automotive subsystems where automotive grade is not mandated. The three 16-bit PWMs independently fade RGB or white LED channels for ambient lighting, and the 10-bit ADC reads cabin illumination sensors to implement automatic brightness adjustment. The 1.8 V to 5.5 V supply range accepts 5 V automotive rails directly. For safety-critical lighting, choose an AEC-Q100 part; this MCU is best suited for accessories and aftermarket products.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F1571T-I/SN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F1571-I/SN | PIC12F1571T-I/MS | PIC12F1571-E/SN | PIC12F1572T-I/SN | PIC12F1501T-I/MS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-8 (SN) | SOIC-8 (SN) - same | SOIC-8 (SN) - same | SOIC-8 (SN) - same | SOIC-8 (SN) - same | MSOP-8 (MS) - different |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (Extended) | -40 C to +85 C | -40 C to +85 C |
| AEC-Q100 Automotive Qualified | No | No | No | No | No | No |
Key Differentiators
- Three independent 16-bit PWM channels in SOIC-8 (vs PIC12F1501T-I/MS)
- Extended temperature variant available in same package (vs PIC12F1571-I/SN)
- Drop-in same-die SOIC-8 family (vs PIC12F1501T-I/MS)
Design Notes
Place a 0.1 uF ceramic decoupling capacitor as close as possible to the Vdd pin (pin 1) of the PIC12F1571T-I/SN. For designs using all three 16-bit PWMs simultaneously with high-frequency switching, add a 10 uF bulk capacitor on the Vdd rail. According to the Microchip datasheet, the device supports 1.8 V to 5.5 V operation; operating near the lower limit reduces ADC reference headroom and may force the comparator to be deselected. The internal 32 MHz oscillator draws additional current when active - use sleep modes to minimize power consumption below 100 nA between ADC samples.
Reserve GP4 and GP5 as ICSPCLK/ICSPDAT when laying out the PCB for in-system programming. If these pins must be used as GPIO, route the ICSP header (typically 5-pin with Vpp/MCLR) so that the 4.7 kohm MCLR pull-up does not interfere with normal operation. The MCLR pin (GP3/VPP) needs a 10 kohm pull-up to Vdd for normal operation; during programming, it is pulled to ~8 V by the programmer. Keep PWM trace lengths short to minimize ringing on the LED or motor outputs.
The PIC12F1571T-I/SN datasheet states GP3 is input-only on this 8-pin variant - configuring it as output causes undefined behavior. The 16-bit PWM outputs are multiplexed with analog and ICSP functions; ensure the corresponding PPS (peripheral pin select) bits are set correctly in firmware before the PWM appears on the expected pin. Do not exceed 5.5 V on any I/O pin even if Vdd is 3.3 V - the absolute maximum rating is 5.5 V and exceeding it destroys the I/O cell.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC16F or dsPIC automotive parts for AEC-Q100 applications. Lead-free packaging confirmed by Microchip datasheet marking.
