PIC12F1572-I/MS - 8-bit MCU, 32MHz, 3.5KB Flash, 16-bit PWM | Microchip
MPN: PIC12F1572-I/MS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.2 | $1.20 |
| 10 | $1.08 | $10.80 |
| 100 | $0.95 | $95.00 |
| 500 | $0.86 | $430.00 |
| 1,000 | $0.78 | $780.00 |
| 3,000 | $0.72 | $2,160.00 |
PIC12F1572-I/MS Overview
An 8-bit microcontroller (MCU) is a single-chip computer that executes instructions from on-chip program memory through an 8-bit data path. The PIC12F1572 belongs to the PIC12F family (8-pin mid-range core), within the broader PIC® mid-range architecture, which itself falls under the 8-bit microcontroller category. As a CMOS flash-based MCU it sits in the semiconductor product hierarchy: microcontroller -> 8-bit MCU -> embedded controller -> integrated circuit.
Key features include three 16-bit PWMs with independent timers, hardware CWG for complementary drive (useful for H-bridge and half-bridge switching), on-chip 5-bit DAC, an EUSART module for asynchronous serial communication, and nanoWatt XLP low-power technology with < 50 nA typical sleep current. The 10-bit ADC provides up to 4 input channels through an external MUX.
The PIC12F1572 employs a Harvard RISC architecture with 49 instructions and a 14-bit instruction word; the Flash program memory supports self-programming via ICSP, allowing in-field firmware updates. The CWG and 16-bit PWMs are designed for high-resolution applications such as LED dimming, power-converter control, and stepper-motor drive waveforms where precise timing is critical.
Typical applications include multi-channel LED lighting control, brushed DC motor and stepper motor drive, switch-mode power supply digital control loops, RGB color mixing, fan speed control, and consumer remote/HID devices. Compact 8-pin designs benefit when board area is constrained but PWM resolution and analog integration are still required.
When designing with this MCU, ensure decoupling capacitors (100 nF and 10 uF) are placed within 4 mm of the VDD pin and that the ICSP programming pins (ICSPCLK/ICSPDAT) are reserved or routed to test pads. The internal 16 MHz HFINTOSC accuracy is approximately +/-2 percent over voltage and temperature, so applications requiring tight UART baud rates should use a crystal or the PLL multiplier.
This page synthesizes distributor stock, parametric drop-in alternatives, and practical design notes drawn from the Microchip PIC12(L)F1571/2 datasheet to support sourcing, replacement and PCB-level decisions that the manufacturer datasheet alone does not cover.
Drop-in alternatives for PIC12F1572-I/MS — 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 PIC12F1572-I/MS (same form factor and footprint) — differing in Package, ADC, I/O Pins, MSL Level, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F1572-I/SN
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.75 / Unit
View Datasheet →PIC12F1572-E/MS
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC12F1571T-I/MS
✅ Drop-In✓ In Stock
$0.46 / Unit
View Datasheet →PIC12F1501T-I/MS
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →PIC12F1572-I/MF
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC12F1572-I/MS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC Mid-range (8-bit, Harvard RISC, 49 instructions) |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| Data RAM | 256 bytes |
| EEPROM | Not present on this part |
| Maximum CPU Frequency | 32 MHz |
| Instruction Cycle Time | 125 ns at 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| I/O Pins | 6 (of 8 total pins) |
| ADC | 10-bit, up to 4 channels (external MUX) |
| DAC | 5-bit on-chip |
| Comparators | 2 |
| 16-bit PWM Modules | 3 (independent timers) |
| Complementary Waveform Generator (CWG) | Yes, 1 module |
| Configurable Logic Cell (CLC) | Yes, 1 module |
| EUSART | 1 module |
| Timers | 4 (Timer0, Timer1 16-bit, Timer2 8-bit PWM, Timer4 8-bit) |
| Package | 8-MSOP (3.00 mm width) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40 C to +85 C (Industrial / 'I' suffix) |
| MSL Level | MSL3 (per JEDEC J-STD-020, reflow 260 C) |
| Lead-Free / RoHS | Yes (Pb-free finish) |
PIC12F1572-I/MS Pin Configuration
| Pin 1 | VDD — Positive power supply (1.8V to 5.5V) |
| Pin 2 | RA5 — Bidirectional I/O, analog input, PWM3 |
| Pin 3 | RA4 — Bidirectional I/O, analog input, PWM2 |
| Pin 4 | RA3/MCLR/VPP — Input-only, Master Clear (reset) or ICSP programming voltage |
| Pin 5 | RA2 — Bidirectional I/O, analog input, PWM1 |
| Pin 6 | RA1 — Bidirectional I/O, analog input, ICSPCLK, comparator out |
| Pin 7 | RA0 — Bidirectional I/O, analog input, ICSPDAT |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12F1572-I/MS is suitable for 7 applications: Multi-Channel LED Lighting Control, Brushed DC and Stepper Motor Drive, Switch-Mode Power Supply (SMPS) Digital Control, Fan Speed Controller (PWM and DAC-based), RGB Color-Mixing and Stage Lighting, Cap-Sense and Proximity User Interface, Battery-Operated Sensor Node.
Multi-Channel LED Lighting Control
The PIC12F1572-I/MS's three independent 16-bit PWMs (>65000 dimming steps each) and 5-bit on-chip DAC let a single 8-pin part drive three LED strings or RGB channels with cinema-grade dimming curves. The CWG module generates complementary outputs with programmable dead-band for synchronous-buck power stages, eliminating discrete gate-driver ICs and shrinking the LED-driver PCB. The CLC module implements safety interlocks (over-temperature, enable) in hardware, freeing the CPU for color-mixing algorithms. Designers use HFINTOSC + PLL to avoid external crystals and keep BOM cost low.
Recommended
Brushed DC and Stepper Motor Drive
The three 16-bit PWMs and CWG (Complementary Waveform Generator) make the PIC12F1572-I/MS a strong fit for brushed DC and small stepper motor drive. The CWG produces non-overlapping complementary signals with hardware dead-band for H-bridge or half-bridge FET drive, so the MCU can command direction and speed without software timing loops. The 10-bit ADC samples motor current through an external sense amplifier for closed-loop torque or speed control. EUSART provides a debug/command interface from a host processor or wireless module.
Recommended
Switch-Mode Power Supply (SMPS) Digital Control
Digital control loops for non-isolated buck/boost converters benefit from the PIC12F1572-I/MS's high-resolution 16-bit PWM (about 8 ns resolution at 32 MHz) and 10-bit ADC. The MCU implements peak-current-mode or voltage-mode control in firmware while the CWG generates synchronous-rectifier gate drive directly, avoiding external PWM-controller ICs. The 256-byte RAM supports a small control loop with state estimators; Flash self-programming allows field tuning of compensation coefficients. The 1.8-5.5 V supply range suits battery-fed and 5 V USB-powered converters.
Recommended
Fan Speed Controller (PWM and DAC-based)
The PIC12F1572-I/MS provides both a 16-bit PWM (open-drain configurable for 4-wire PWM fans) and a 5-bit DAC (analog voltage for 3-wire fans), letting one part cover both fan-control styles. The CLC combines tachometer feedback from the fan with PWM duty cycle to implement closed-loop RPM control in hardware. nanoWatt XLP low-power modes (<50 nA sleep) extend battery life in portable or solar-powered fan applications. The 8-pin MSOP footprint fits inline on the fan harness PCB.
Recommended
RGB Color-Mixing and Stage Lighting
For stage-lighting fixtures, the PIC12F1572-I/MS drives three high-side constant-current LED drivers from its three 16-bit PWMs, giving 16.7M colors with 16-bit-per-channel gamma-corrected dimming. The CLC routes a DMX-512 break detect signal to the EUSART without CPU intervention, lowering command latency to <100 us. The 1.8-5.5 V supply range supports battery-powered wireless fixtures. The 8-pin MSOP allows extremely compact PCBAs inside the fixture housing.
Recommended
Cap-Sense and Proximity User Interface
With the CWG disabled, the PIC12F1572-I/MS's three 16-bit PWMs, 10-bit ADC, and two comparators can be repurposed for mTouch capacitive-touch sensing across multiple electrodes. The 5-bit DAC provides a reference for the touch-comparator slope-detection scheme. The 256-byte RAM holds state for simple gesture recognition (tap, hold, swipe). The 8-MSOP package suits front-panel PCBs where back-side clearance is tight. Hardware CLC removes false-trigger filtering without CPU overhead.
Recommended
Battery-Operated Sensor Node
The nanoWatt XLP technology on PIC12F1572-I/MS offers <50 nA typical sleep current with RTC wakeup, extending coin-cell battery life to multiple years in remote sensor applications. The 10-bit ADC measures sensor outputs, while the EUSART communicates over a low-power RF link (external module). The 1.8-5.5 V supply range accepts single Li-ion or two-alkaline cells directly. The 8-MSOP keeps the node under 10 mm on a side, enabling installation in tight housings.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F1572-I/MS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F1572-I/SN | PIC12F1572-E/MS | PIC12F1571T-I/MS | PIC12F1501T-I/MS | PIC12F1572-I/MF |
|---|---|---|---|---|---|---|
| Package | 8-MSOP | 8-SOIC | 8-MSOP | 8-MSOP | 8-MSOP | 8-DFN |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| 16-bit PWM Channels | 3 | 3 | 3 | 1 (plus 2x 10-bit PWM) | 6 | 3 |
| Flash (KB) | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 |
| RAM (bytes) | 256 | 256 | 256 | 256 | 256 | 256 |
| EEPROM (bytes) | 0 | 0 | 0 | 128 | 0 | 0 |
| CWG Module | Yes | Yes | Yes | Yes | No | Yes |
| Operating Voltage (V) | 1.8 to 5.5 | 1.8 to 5.5 | 1.8 to 5.5 | 1.8 to 5.5 | 1.8 to 5.5 | 1.8 to 5.5 |
| Operating Temperature (C) | -40 to +85 | -40 to +85 | -40 to +125 | -40 to +85 | -40 to +85 | -40 to +85 |
Key Differentiators
- Three independent 16-bit PWMs in an 8-pin package (vs PIC12F1571T-I/MS)
- Built-in Complementary Waveform Generator (CWG) with hardware dead-band (vs PIC12F1501T-I/MS)
- Industrial -40 C to +85 C operating temperature in standard part (vs PIC12F1572-I/SN)
Design Notes
Place a 100 nF X7R decoupling capacitor within 4 mm of the VDD pin (pin 1) and a bulk 1 uF to 10 uF tantalum or ceramic capacitor on the same VDD rail. Estimated: at 32 MHz operation with all peripherals active, the PIC12F1572 typically draws about 3 mA to 5 mA from VDD; at 1 MHz in sleep with WDT disabled the part draws under 50 nA per the nanoWatt XLP specification. The MCLR pin (pin 4) must be tied to VDD through a 10 kohm resistor for normal operation, or to a stable VPP source during ICSP programming.
The 8-pin MSOP package has a thermal pad under the body but only 6 functional I/O; route the 4-wire ICSP programming signals (ICSPCLK on RA1, ICSPDAT on RA0, MCLR/VPP on RA3, VDD) to a 0.1-inch header or test pads to enable in-field firmware updates. Keep analog signals on RA2/RA4/RA5 short and away from PWM outputs on adjacent pins to minimize capacitive coupling. The HFINTOSC accuracy of about +/-2 percent over voltage and temperature is generally adequate for software UART at 9600 baud but requires crystal or PLL calibration for higher baud rates.
Do not assume the CLC, CWG, and three 16-bit PWMs can all be active simultaneously without checking the PPS (Peripheral Pin Select) mapping in the configuration registers. Estimated: the PIC12F1572 has only 6 I/O pins, so two peripherals may need to share a pin - verify there are no routing conflicts in the MCC pin-manager view. Avoid leaving unused PWM outputs floating; configure them as outputs driven low or as GPIO inputs to prevent shoot-through in half-bridge drive topologies. When migrating firmware between the PIC12F1572 and PIC12F1571, note that the 1571 has only one 16-bit PWM (PWM3 is 10-bit only).
At 5.5 V VDD and 32 MHz with all peripherals active, the PIC12F1572 dissipates roughly 25 mW (estimated: 4.5 mA x 5.5 V). The 8-MSOP theta_JA of about 200 C/W (per JEDEC EIA/JESD51 standards) yields a junction-to-ambient rise of only about 5 C, well within the 125 C max junction temperature. At -40 C ambient in the PIC12F1572-E/MS extended-temperature variant, the part remains within spec without derating.
Compliance Information
Lead-free Pb-free finish per Microchip product page. AEC-Q100 not qualified (industrial grade only); choose PIC16F1xxx family for automotive. Halogen-free per Microchip Material Declaration.
