PIC12F1571-E/MS
PIC12F1571-E/MS - 8-bit MCU, 32MHz, 1.75KB Flash, 16-bit PWM | Microchip
The Microchip Technology PIC12F1571-E/MS is an 8-bit PIC12-family RISC microcontroller built around a Harvard-architecture CPU delivering 32 MHz maximum clock speed with 1.75 KB (1K x 14 words) of self-programmable Flash program memory, 128 bytes of SRAM, and 256 bytes of EEPROM in a compact 8-pin MSOP package. According to the Microchip PIC12(L)F1571/1572 datasheet family, the device integrates three independent 16-bit PWMs with dedicated timers, a configurable 10-bit Analog-to-Digital Converter (ADC), a comparator, a fixed-voltage reference (FVR), and the enhanced Mid-Range core with 49 instructions and 16 stack levels.
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile data memory (RAM), and peripheral subsystems (timers, ADC, communication interfaces) into one package, forming the lowest tier of the embedded computing hierarchy: microcontroller -> microprocessor -> computer system. The PIC12F1571 belongs to the 8-bit microcontrollers product class, which sits beneath 16-bit and 32-bit MCUs in computational throughput but above pure digital logic in integration density. Its 8-pin footprint makes it the smallest PIC12 variant, ideal for space-constrained designs.
Key specifications include an operating voltage range of 2.3 V to 5.5 V (extended range supports operation down to 1.8 V with reduced frequency), up to 32 MHz internal oscillator, six I/O pins, and a 10-bit ADC with up to 6 channels. Three independent 16-bit PWM channels support edge- and center-aligned modes with hardware dead-band control, making the device well-suited for LED dimming and power-conversion tasks. The integrated comparator with selectable references enables analog signal conditioning without external components, while the FVR provides stable ADC and comparator voltage references.
The PIC12F1571 uses the enhanced PIC Mid-Range 14-bit instruction set, executes most instructions in a single clock cycle, and offers nanoWatt XLP technology for low-power sleep modes. The device supports in-circuit serial programming (ICSP) via two pins, eliminating the need for an external programmer socket. Available in 8-pin PDIP, SOIC, MSOP, and DFN packages, the PIC12F1571 ships in an 8-MSOP (3.00 mm body width) format for the -E/MS variant, providing compact surface-mount placement for high-density designs.
Typical applications include LED lighting and dimming controllers, small appliance motor control (especially stepper motor and DC brushed motor drivers), battery-powered sensor nodes, simple switched-mode power supply (SMPS) control loops, and low-cost analog signal conditioning. The combination of three 16-bit PWMs and a comparator in an 8-pin package is rare, making this MCU a strong fit for cost-sensitive mixed-signal designs.
When designing with the PIC12F1571, ensure VDDCORE capacitance (typically 0.1 microfarad plus 1 microfarad) is placed within 4 mm of the dedicated core supply pin. The ICSPDAT and ICSPCLK pins must be accessible for in-circuit programming, even in production boards, and the MCLR pin should have a proper pull-up network to ensure reliable reset behavior. Always check the latest Microchip errata document for the PIC12F1571 silicon revision you are using.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, providing engineering buyers and PCB designers with a single source for procurement decisions, footprint compatibility verification, and application-specific guidance.
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