PIC12F1572T-I/RF - 8-Bit MCU, 32MHz, 3.5KB Flash, 8-UDFN | Microchip
MPN: PIC12F1572T-I/RF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.23 | $1.23 |
| 10 | $1.11 | $11.10 |
| 100 | $0.99 | $99.00 |
| 500 | $0.91 | $455.00 |
| 1,000 | $0.87 | $870.00 |
PIC12F1572T-I/RF Overview
An 8-bit PIC microcontroller (MCU) is a compact, low-power computing core built around Microchip's enhanced mid-range RISC architecture. The 8-bit MCU sits within the broader taxonomy of microcontrollers -> microcomputers -> embedded processors -> semiconductors, and is typically used for dedicated control tasks where low cost, deterministic timing, and minimal external component count are critical. The PIC12F1572 family targets general-purpose applications that previously required larger 14- or 20-pin MCUs but can now be implemented in an 8-pin footprint.
Key differentiating specifications include three independent 16-bit PWMs (vs. the typical 8- or 10-bit PWM found in competing 8-pin MCUs), a 5-bit DAC and a 10-bit DAC on dedicated output pins, a complementary waveform generator (CWG), four 10-bit ADC channels, and two comparators. Operating voltage spans 2.3V to 5.5V across the -40C to +85C industrial range, with the 'F' (Flash) variant supporting in-circuit serial programming (ICSP) for field-upgradeable firmware.
Architecturally, the device uses a Harvard RISC core with a single-cycle 49-instruction set, 14-bit instruction word, and hardware stack. The three 16-bit PWM channels share independent Timer2/4/6 sources and support edge- and center-aligned modes with dead-band control, enabling direct generation of high-resolution lighting, motor-control, and switch-mode power-supply waveforms without CPU intervention.
Typical applications include LED lighting drivers (RGB, RGBA, and white-tuning), stepper motor control, isolated and non-isolated switch-mode power supplies, fan controls, battery chargers, and compact IoT sensor nodes. The combination of high-resolution PWM and integrated analog peripherals eliminates the need for external driver ICs in many cost-sensitive designs.
When designing with the PIC12F1572T-I/RF, ensure the exposed pad (EP) on the UDFN package is soldered to a sufficient copper thermal/ground pour on the PCB - this is the device's primary ground connection. Programming requires a 5V-tolerant ICSP connection on ICSPCLK/ICSPDAT pins, and unused GPIO should be configured as outputs low to minimize quiescent current draw.
This page synthesizes verified distributor pricing, drop-in alternatives, and application-specific design guidance not found in the standalone manufacturer datasheet, giving procurement and engineering teams a single source for parametric, supply-chain, and design data on PIC12F1572T-I/RF.
Drop-in alternatives for PIC12F1572T-I/RF — 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 PIC12F1572T-I/RF (same form factor and footprint) — differing in ADC, DAC, Operating Temperature, Package, Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F1571-I/RF
✅ Drop-In✓ In Stock
$0.72 / Unit
View Datasheet →PIC12F1571T-I/RF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12F1572-I/RF
✅ Drop-In✓ In Stock
$0.45 / Unit
View Datasheet →PIC12LF1572-I/RF
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →PIC12F1572T-I/MF
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.63 / Unit
View Datasheet →PIC12F1572T-I/SN
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12F1572T-I/RF Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC enhanced mid-range RISC |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| RAM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage (VDD) | 2.3 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (Industrial) |
| I/O Pins | 6 |
| ADC | 10-bit, up to 4 channels |
| PWM Channels | Three 16-bit (independent timers) |
| DAC | 5-bit and 10-bit DACs |
| Comparators | 2 |
| Complementary Waveform Generator (CWG) | Yes |
| Package | 8-UDFN (3x3 mm) with Exposed Pad |
| Mounting Type | Surface Mount, Tape & Reel |
| Programming Method | ICSP (In-Circuit Serial Programming) |
| RoHS Status | Compliant |
PIC12F1572T-I/RF Pin Configuration
| Pin 1 | RA5/ICSPCLK — GPIO RA5 / ICSP clock programming pin |
| Pin 2 | RA0 — GPIO RA0 / ICSPDAT programming pin / ADC channel |
| Pin 3 | RA1 — GPIO RA1 / ADC channel / DAC5 reference |
| Pin 4 | RA2 — GPIO RA2 / ADC channel / DAC10 output |
| Pin 5 | RA3 — GPIO RA3 (input only) / MCLR reset |
| Pin 6 | RA4 — GPIO RA4 / ADC channel / PWM output |
| Pin 7 | VDD — Positive supply voltage (2.3 V to 5.5 V) |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12F1572T-I/RF is suitable for 7 applications: RGB LED Lighting Driver, Stepper Motor Control, Switch-Mode Power Supply (SMPS) Controller, Portable IoT Sensor Node, Fan Speed Controller, Battery Charger Controller, Smart Home Lighting Module.
RGB LED Lighting Driver
The PIC12F1572T-I/RF is ideally suited for RGB and RGBA LED lighting drivers because it integrates three independent 16-bit PWM channels that can directly modulate red, green, blue, and amber LED strings with >16-bit effective dimming resolution, far exceeding the 8-10 bit resolution of typical 8-pin MCUs. Each PWM has its own timer base (Timer2/4/6), so color transitions can be phase-shifted to reduce input capacitor ripple. The 10-bit ADC on RA0-RA4 enables closed-loop thermal or ambient-light feedback using external NTCs or photodiodes, while the integrated 10-bit DAC sets reference currents for high-side current-sense amplifiers. Operating from 2.3V to 5.5V, the part runs directly from a buck-converter output or 2xAA cells, eliminating the need for a separate MCU in compact MR16 bulbs and architectural fixtures.
Recommended
Stepper Motor Control
The three 16-bit PWMs and on-chip Complementary Waveform Generator (CWG) make PIC12F1572T-I/RF well suited for micro-stepping bipolar stepper motor control in fans, valve actuators, and small robotics. The CWG generates complementary PWM outputs with programmable dead-band, directly driving an external H-bridge FET pair from a single MCU pin set. The 16-bit PWM resolution enables micro-stepping to 1/256 step or finer, eliminating audible step resonance and improving positional accuracy. The 5-bit DAC sets the per-phase current reference, while the two on-chip comparators handle back-EMF zero-cross detection for sensorless stall detection. The 32 MHz core executes sinusoidal commutation tables in real time at up to 20 krpm without CPU stalls.
Recommended
Switch-Mode Power Supply (SMPS) Controller
PIC12F1572T-I/RF can implement isolated and non-isolated switch-mode power supplies (buck, boost, flyback) using its high-resolution 16-bit PWM as the switching frequency source with sub-nanosecond duty-cycle control. The CWG provides complementary drive signals with programmable dead-band, ideal for synchronous rectifier timing in buck converters. The on-chip 10-bit ADC samples feedback voltages on the same die, enabling peak current-mode control with cycle-by-cycle current limiting. The 5-bit DAC programs the soft-start and current-limit thresholds dynamically. With 32 MHz CPU and 3.5 KB Flash, firmware can implement digital compensation loops, input-voltage feed-forward, and adaptive dead-time optimization in compact 1-5 W adapters and auxiliary supplies.
Recommended
Portable IoT Sensor Node
PIC12F1572T-I/RF fits compact battery-powered IoT sensor nodes because it integrates a 10-bit ADC for sensor signal conditioning, PWM channels for driving status LEDs or buzzer alerts, and a low-power sleep mode - all in an 8-pin UDFN (3x3 mm) package with 6 GPIO. The 2.3V minimum VDD enables operation from a single CR2032 coin cell, while the 32 MHz CPU supports local edge-processing of sensor data before transmission. The 5-bit DAC can synthesize reference voltages for ratiometric sensor measurements, and the two comparators handle threshold detection without waking the CPU. Designers can implement analog sensor front-ends, threshold-based wake-up, and PWM-driven user feedback in a sub-$1 BOM.
Recommended
Fan Speed Controller
The PIC12F1572T-I/RF is widely used in 5V/12V DC fan speed controllers because its 16-bit PWM can generate the 25 kHz drive frequency required for quiet fan operation while delivering precise duty-cycle control from 0% to 100%. The on-chip 10-bit ADC reads tachometer feedback from the fan's Hall-effect sensor output, enabling closed-loop RPM regulation. The two comparators handle stall detection and over-current protection by sensing shunt voltage across the low-side FET. With 3.5 KB Flash and 256 bytes RAM, firmware can implement PID speed control, soft-start ramps, and fault logging. The industrial -40 C to +85 C temperature range supports chassis-fan and server-fan applications.
Recommended
Battery Charger Controller
PIC12F1572T-I/RF enables compact Li-ion and NiMH battery charger designs by combining the 10-bit ADC (voltage and current sensing), 16-bit PWM (charging current regulation), 5-bit DAC (charge-voltage reference), and two comparators (temperature and over-voltage protection) on a single die. The 32 MHz core supports CC-CV (constant-current / constant-voltage) charging profiles, delta-V charge termination for NiMH, and JEITA temperature-aware Li-ion charging. Operating voltage down to 2.3V allows direct connection to single-cell battery stacks, while the 8-pin UDFN footprint fits inside USB-powered wearable chargers, power banks, and IoT charging cradles.
Recommended
Smart Home Lighting Module
In Zigbee, BLE, or Wi-Fi smart-lighting retrofit modules, the PIC12F1572T-I/RF serves as the local PWM dimming controller that translates wireless dim commands into high-resolution 16-bit PWM outputs for the LED driver stage. The 10-bit ADC reads the AC zero-cross signal for phase-cut dimmer compatibility (leading-edge/trailing-edge), while the 5-bit DAC programs the minimum and maximum dim thresholds. With 6 GPIO, designers can drive triac gate controls, status LEDs, and a tactile pushbutton input. The 2.3V to 5.5V operating range accepts both 3.3V module rails and 5V USB-powered variants directly. The industrial temperature grade ensures reliable operation in enclosed ceiling fixtures up to 85 C ambient.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F1572T-I/RF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F1571-I/RF | PIC12LF1572-I/RF | PIC12F1572T-I/SN |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-UDFN (3x3 mm) with EP | 8-UDFN (3x3 mm) with EP | 8-UDFN (3x3 mm) with EP | 8-SOIC (SN) |
| Flash Memory | 3.5 KB | 1.75 KB (-50%) | 3.5 KB | 3.5 KB |
| RAM | 256 B | 128 B (-50%) | 256 B | 256 B |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V |
| PWM Channels | 3 x 16-bit | 3 x 16-bit | 3 x 16-bit | 3 x 16-bit |
| ADC Resolution | 10-bit, 4 ch | 10-bit, 4 ch | 10-bit, 4 ch | 10-bit, 4 ch |
| DAC | 5-bit + 10-bit | 5-bit + 10-bit | 5-bit + 10-bit | 5-bit + 10-bit |
| Max CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Pin Count | 8 | 8 | 8 | 8 |
Key Differentiators
- Three independent 16-bit PWMs vs. typical 8-bit/10-bit PWMs in competing 8-pin MCUs (vs PIC12F1501-I/P)
- Largest memory in the PIC12F157x family (vs PIC12F1571-I/RF)
- Both 5-bit and 10-bit DACs integrated on-chip (vs PIC16F18313-I/MS)
Design Notes
The 8-UDFN (RF) package exposes a thermal/ground pad on the underside that MUST be soldered to a PCB ground pour. Without proper soldering, the part will have no ground connection (pin 8 VSS is also bonded internally to the EP). Use at least 4 thermal vias in the EP land pattern to improve heat dissipation and ensure reliable operation at full 32 MHz CPU speed. Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 7), with a 10 uF bulk capacitor within 5 mm.
ICSP programming uses multiplexed pins RA5/ICSPCLK and RA0/ICSPDAT. If RA0 is used as ADC input or RA5 as GPIO output in the application, ensure the application circuitry does not load these lines below 50 kohm during programming - otherwise the programmer cannot drive the pins and ICSP will fail. Common mistake: routing the ICSP connector too far from the MCU without a series resistor for isolation.
Estimated: For 16-bit PWM operation above 20 kHz switching frequency, keep the PWM output traces (RA2, RA4, and the CWG outputs) shorter than 25 mm and isolated from sensitive analog ADC traces (RA0, RA1) by at least 3 mm or a ground guard ring. The on-chip ADC has 10-bit resolution; trace coupling from PWM edges can introduce 1-2 LSB noise if routing is poor. Use a separate analog ground island tied to the EP at a single point.
Brown-out reset (BOR) must be enabled for reliable startup in battery-powered applications. The default BOR threshold is 2.1V on the PIC12F1572; if the supply decays slowly through the BOR threshold, the device may enter undefined states. Configure the PWRT (power-up timer) for at least 64 ms delay before code execution begins, and use the internal LFINTOSC (31 kHz) as fail-safe clock if the 32 MHz HFINTOSC fails to start.
Compliance Information
RoHS and REACH compliance per Microchip product page. Industrial temperature grade (-40C to +85C) only; AEC-Q100 automotive qualification not available - choose PIC16F1x series for AEC-Q100 qualified alternatives.
