PIC12F1571T-I/MF - 8-Bit MCU, 32MHz, 1.75KB Flash 8-DFN | Microchip
MPN: PIC12F1571T-I/MF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.2 | $1.20 |
| 10 | $1.08 | $10.80 |
| 100 | $0.92 | $92.00 |
| 500 | $0.78 | $390.00 |
| 1,000 | $0.65 | $650.00 |
PIC12F1571T-I/MF Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals. Within the semiconductor hierarchy, an MCU sits under microcontrollers, then embedded ICs, then integrated circuits. The PIC12F1571 belongs to the 8-bit MCU family and to Microchip's enhanced mid-range core, which adds C-compiler-friendly instructions and deeper hardware peripherals compared to baseline PIC12 devices.
Key features include 32MHz internal oscillator operation, three 16-bit PWMs with independent timers for high-resolution dimming, a 10-bit ADC with multiple input channels, a hardware comparator, 128 bytes of SRAM, and an extended (-40C to +85C) industrial operating range. The T-suffix indicates Tape and Reel packaging, while I/MF denotes the industrial temperature grade and 8-pin DFN package. Programming is supported through Microchip's ICSP interface using MPLAB X IDE and XC8 compilers.
The PIC12F1571 uses Microchip's enhanced mid-range 8-bit core with a 14-bit instruction word and single-cycle ALU operations, enabling deterministic interrupt response and efficient C code generation. The three 16-bit PWM channels operate from a common time base yet remain independently duty-cycle programmable, which is critical for multi-channel LED color mixing and full-bridge/half-bridge motor drive topologies.
Typical applications include LED lighting dimmers and RGB drivers, low-end stepper motor controllers, fan/blower speed controllers, and small power-supply housekeeping circuits. The wide operating voltage range (typically 1.8V-5.5V) and low power consumption (nanoWatt XLP technology) make it suitable for battery-powered IoT nodes as well as line-powered consumer devices.
When designing with this part, ensure decoupling capacitors (100nF + optional 10uF) are placed within 3mm of the VDD pin. The ICSP pins (PGD/PGC) must be accessible for in-circuit programming, which may require test-point pads on the PCB. Programming/debugging requires a Microchip PICkit, SNAP, or ICD programmer with MPLAB X IDE.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC12F1571T-I/MF 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 PIC12F1571T-I/MF (same form factor and footprint) β differing in ADC, Package, Core Architecture, Operating Temperature, Comparators.
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Request AlternativesPIC12F1571T-I/MF Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC enhanced mid-range |
| Program Memory (Flash) | 1.75 KB (1K x 14 words) |
| SRAM | 128 bytes |
| Maximum CPU Speed | 32 MHz |
| Number of Pins | 8 |
| Package | 8-pin DFN (3x3 mm) |
| Operating Voltage Range | 1.8 V to 5.5 V (typical) |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| PWM Channels | 3 x 16-bit |
| ADC | 10-bit |
| Comparators | 1 |
| I/O Pins | 6 (max) |
| Programming Interface | ICSP (2-wire) |
| RoHS Status | Compliant |
| MSL Level | 1 |
| Mounting Type | Surface Mount |
PIC12F1571T-I/MF Pin Configuration
| Pin 1 | VDD β Positive power supply (+1.8V to +5.5V) |
| Pin 2 | RA5 β Bidirectional I/O pin / PWM channel |
| Pin 3 | RA4 β Bidirectional I/O pin / PWM channel |
| Pin 4 | RA3/MCLR/VPP β Input only / Master Clear reset / programming voltage |
| Pin 5 | RA2 β Bidirectional I/O pin / PWM channel / analog input |
| Pin 6 | RA1/ICSPCLK β Bidirectional I/O / serial programming clock |
| Pin 7 | RA0/ICSPDAT β Bidirectional I/O / serial programming data / analog input |
| Pin 8 | VSS β Ground reference |
Typical Applications
PIC12F1571T-I/MF is suitable for 6 applications: LED Lighting Dimming Controller, RGB Color-Mixing LED Driver, Low-End Stepper Motor Controller, DC Fan Speed Controller, Battery-Powered IoT Sensor Node, SMPS Auxiliary Controller / Housekeeping.
LED Lighting Dimming Controller
The PIC12F1571T-I/MF is ideal for high-resolution LED dimming applications thanks to its three independent 16-bit PWM channels operating at 32MHz. With 16-bit resolution (65536 steps), the MCU delivers flicker-free dimming curves from 0.01% to 100% duty cycle, critical for premium LED bulbs and architectural lighting. The 10-bit ADC enables analog or 0-10V dimming input sensing, while the integrated comparator supports over-temperature protection by monitoring an NTC thermistor. Typical circuit: RA0 reads a 0-10V analog dim level via ADC, RA1/RA2/RA4 output the three 16-bit PWMs to MOSFET gate drivers. The 1.75KB Flash easily fits state-machine dim logic with fade tables.
Recommended
RGB Color-Mixing LED Driver
The three independent 16-bit PWMs of the PIC12F1571T-I/MF map directly to R, G, B LED channels for smooth color mixing without external driver ICs. At 32MHz clock, each PWM can run at ~488Hz with full 16-bit resolution - well above the 100Hz flicker-fusion threshold for human perception. The hardware comparator handles over-current protection by sensing a shunt resistor and instantly shutting down PWMs. With 128 bytes SRAM, the MCU supports HSV-to-RGB conversion and gamma correction in firmware. The 8-pin DFN package fits inside MR16 spotlight form factors, replacing discrete 555-timer-based designs with a programmable, single-chip solution.
Recommended
Low-End Stepper Motor Controller
For unipolar stepper motors driving small valves, pointer meters, or camera lenses, the PIC12F1571T-I/MF provides a compact, low-cost controller. Its 16-bit PWM with complementary outputs drives the two H-bridge phase coils via MOSFET gate drivers. The 32MHz CPU executes microstepping algorithms (up to 1/16 step) in real time using a simple lookup table, while the 10-bit ADC reads a potentiometer for position feedback. The 8-pin DFN package enables integration into NEMA 8 or NEMA 11 motor housings. Power dissipation stays minimal due to the 5.5V max supply and sleep-mode current under 1uA, ideal for battery-actuated valves.
Recommended
DC Fan Speed Controller
The PIC12F1571T-I/MF makes a precise 4-wire PWM fan controller for PCs, networking gear, and appliance cooling. Its 16-bit PWM channel generates the standard 25kHz fan-control signal with 0-100% duty cycle, while a 10-bit ADC input reads tachometer feedback for closed-loop RPM regulation. The hardware comparator triggers over-temperature shutdown by sensing a thermistor on the heatsink. With nanoWatt XLP sleep modes, the MCU consumes negligible power when the host system is off. The 8-pin DFN package fits alongside the fan connector on a 15x15mm PCB, replacing discrete fan-control ICs with a programmable firmware-based solution.
Recommended
Battery-Powered IoT Sensor Node
The PIC12F1571T-I/MF is well-suited for coin-cell powered IoT sensor nodes thanks to its nanoWatt XLP technology offering sleep currents below 100nA. The internal 32MHz oscillator eliminates the need for an external crystal, reducing BOM cost and PCB area. The 10-bit ADC wakes the MCU periodically to read a sensor (temperature, light, gas), and a 16-bit PWM drives an IR or visible LED for optical signaling. The 1.75KB Flash accommodates TinyOS-style or custom protocol stacks for sub-GHz or BLE companion radio control. The 8-pin DFN package is one of the smallest footprints available, ideal for wearable health patches.
Recommended
SMPS Auxiliary Controller / Housekeeping
In switch-mode power supplies, the PIC12F1571T-I/MF serves as an auxiliary housekeeping MCU handling fan control, fault monitoring, and housekeeping LEDs. Its 16-bit PWMs drive status indicators and the cooling fan; the 10-bit ADC reads output voltage/current telemetry via resistor dividers; and the comparator triggers fast OVP/OCP shutdown. With 1.75KB Flash, it fits sophisticated fault-logging firmware. The wide 1.8V-5.5V operating range allows direct connection to the standby rail without additional regulators. The 8-pin DFN package integrates into compact PSU form factors where auxiliary controllers traditionally use op-amps and 555 timers.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F1571T-I/MF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F1572T-I/MF | PIC12F1571T-I/SN | PIC12F1571-E/MF | PIC12F1571T-I/MS | PIC12LF1571T-I/MF |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-pin DFN (3x3 mm) | 8-pin DFN (3x3 mm) - same | 8-pin SOIC (3.90 mm) | 8-pin DFN (3x3 mm) - same | 8-pin MSOP (3x3 mm) | 8-pin DFN (3x3 mm) - same |
| Flash Program Memory | 1.75 KB (1K x 14) | 3.5 KB (2K x 14) | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB |
| SRAM | 128 bytes | 256 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V |
| 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 |
| PWM Channels | 3 x 16-bit | 3 x 16-bit | 3 x 16-bit | 3 x 16-bit | 3 x 16-bit | 3 x 16-bit |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
Key Differentiators
- Three independent 16-bit PWMs in an 8-pin package (vs PIC12F1501-I/P)
- Industrial temperature grade at low cost (vs PIC12F1571-E/MF)
- Compact 3x3mm DFN package (vs PIC12F1571T-I/SN (SOIC-8))
- Dual-range 1.8V-5.5V operation (vs PIC12LF1571T-I/MF)
- On-chip 10-bit ADC plus hardware comparator (vs PIC10F200-I/P (baseline PIC10))
Design Notes
Place a 100nF ceramic decoupling capacitor within 3mm of the VDD pin (Pin 1), with the trace to VDD kept short and wide. For designs with switching loads (PWM-driven MOSFETs, inductive fans), add a 10uF bulk capacitor near the MCU to handle transient current demands. The PIC12F1571T-I/MF supply range is 1.8V to 5.5V; exceeding 5.5V can damage the MCU permanently. Use a low-dropout regulator such as MCP1700 for stable rail generation from higher input voltages.
The 8-pin DFN package has an exposed thermal pad (EP) underneath that is electrically connected to VSS (Pin 8). The EP must be soldered to a PCB pad of at least 2x2 mm connected to the ground plane for mechanical reliability and thermal dissipation. Without proper EP soldering, the part may fail under thermal cycling or mechanical shock. Reserve 0.5mm clearance around the EP for solder mask defined (SMD) pads or use non-solder-mask-defined (NSMD) pads for better solder joint reliability.
Do not connect the ICSPDAT/ICSPCLK pins (RA0/RA1) directly to external circuitry without considering their dual role during programming. Adding low-impedance loads on these pins can prevent successful ICSP programming. Include test points or unpopulated header footprints for the ICSP interface, and avoid permanently tying these pins to VDD or VSS. Also note that RA3 is input-only on this device - never configure it as an output in firmware, or the MCU will not operate correctly.
Estimated: At maximum 32MHz CPU speed with all peripherals active, the PIC12F1571T-I/MF consumes approximately 6mA from a 5V supply (~30mW). The 8-pin DFN package has a typical theta_JA of ~70 C/W on a 1oz copper 4-layer board, giving a junction temperature rise of only 2-3 C above ambient - well within the +85C industrial limit. For extended temperature (-40C to +125C) designs, use the PIC12F1571-E/MF variant explicitly.
Route the ICSP signals (ICSPDAT on RA0, ICSPCLK on RA1) with short, parallel traces kept away from switching noise sources such as PWM outputs and high-current traces. Maintain at least 3mm clearance between analog inputs (RA0, RA2, RA3) and digital switching signals to preserve ADC accuracy. The MCLR/VPP pin (RA3) requires a 10kohm pull-up to VDD for normal operation; during ICSP programming the programmer drives this pin to ~12V.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - use PIC16 or PIC18 families for automotive. Halogen-free per Microchip environmental compliance documentation.
