PIC12F1571-I/MS - 8-bit MCU, 32MHz, 1.75KB Flash, 8-MSOP | Microchip
MPN: PIC12F1571-I/MS β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.85 | $0.85 |
| 10 | $0.78 | $7.80 |
| 100 | $0.72 | $72.00 |
| 500 | $0.65 | $325.00 |
| 1,000 | $0.58 | $580.00 |
PIC12F1571-I/MS Overview
A PIC microcontroller is a compact, Harvard-architecture single-chip computer that integrates a CPU, non-volatile Flash memory, RAM, and a configurable set of peripherals such as timers, ADC, PWM and communication modules. Within the broader taxonomy, PIC12F1571 sits at microcontroller -> 8-bit MCU -> PIC12 family -> PIC12F157X sub-family -> semiconductor. PIC microcontrollers are widely used as state-machine controllers and glue-logic replacements where deterministic response and ultra-low standby power matter more than raw compute throughput.
Key features include three independent 16-bit PWMs with independent timers (ideal for high-resolution LED lighting and stepper motor control), 128 bytes of RAM, a 32 MHz internal oscillator, an on-chip 10-bit ADC, two rail-to-rail comparators with selectable hysteresis, a 5-bit DAC reference, and a PWM shutdown/sync logic block. The device supports 100,000 Flash write/erase cycles and >40-year data retention per Microchip.
Architecturally, the PIC12F1571 uses Microchip's enhanced mid-range 14-bit instruction set with a single-cycle hardware multiplier and a deep interrupt hardware stack. The PWM block provides edge-aligned, center-aligned and variable-phase operation, allowing multi-channel lighting or motor phases to be generated without software overhead. Intelligent Analog integration lets the comparators trigger PWM shutdown for overcurrent protection.
Typical applications include LED lighting control, stepper motor and BLDC commutation, small SMPS and digital power conversion, general-purpose timers and sensor hubs, and battery-charging front ends. The PIC12F1571-I/MS is pin-compatible with the PIC12F1501 and PIC12LF1559 families, simplifying migration. When designing, budget for at least 2.0V supply operation on F variants and 1.8V on LF variants; an external decoupling capacitor of 100 nF on VDD is recommended within 4 mm of the pin.
Drop-in alternatives for PIC12F1571-I/MS 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 PIC12F1571-I/MS (same form factor and footprint) β differing in Comparators, I/O Pins, MSL Level, Package, ADC.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC12LF1571-I/MS
β Drop-Inπ Reference alternative (not in catalog)
PIC12F1571T-I/MS
β Drop-Inβ In Stock
$0.46 / Unit
View Datasheet βPIC12F1572-I/MS
β Drop-Inβ In Stock
$0.72 / Unit
View Datasheet βPIC12F1501-I/MS
β Drop-Inπ Reference alternative (not in catalog)
PIC12F1571-E/MS
β Drop-Inπ Reference alternative (not in catalog)
PIC12F1571-I/MS Maximum Ratings & Electrical Characteristics
| Product Family | PIC12F157X |
| Core | 8-bit PIC enhanced mid-range (14-bit instruction set) |
| Program Memory | 1.75 KB Flash (1K x 14 words) |
| Data RAM | 128 bytes |
| EEPROM | None (not specified in provided data) |
| Maximum CPU Frequency | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 5.5 V (PIC12LF variant: 1.8 V; PIC12F: 2.0 V to 5.5 V) |
| Operating Temperature | -40C to +85C (industrial / -I grade) |
| 16-bit PWM Channels | 3 (independent timers) |
| ADC | 10-bit, 4 channels |
| Comparators | 2 (rail-to-rail, selectable hysteresis) |
| DAC Reference | 5-bit (per Microchip family datasheet) |
| Timers | 1 x 8-bit Timer0, 1 x 16-bit Timer1, 1 x 16-bit Timer2 |
| I/O Pins | 6 GPIO |
| Package | 8-MSOP (MS), 3.0 mm body |
| Mounting Type | Surface Mount |
| MSL Level | MSL1 (per JEDEC J-STD-020, see datasheet) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Flash Endurance | 100,000 erase/write cycles typical |
PIC12F1571-I/MS Pin Configuration
| Pin 1 | RA5 β GPIO / ICSPCLK / PWM3 output |
| Pin 2 | RA0 β GPIO / ICSPDAT / AN0 / DAC output |
| Pin 3 | RA1 β GPIO / AN1 / C1IN0- / PWM1 output |
| Pin 4 | RA2 β GPIO / AN2 / C1OUT / PWM2 output |
| Pin 5 | RA3 β MCLR / VPP / reset input |
| Pin 6 | RA4 β GPIO / AN3 / C2OUT |
| Pin 7 | VSS β Ground reference |
| Pin 8 | VDD β Positive supply voltage |
Typical Applications
PIC12F1571-I/MS is suitable for 6 applications: RGB LED Lighting Control, Stepper Motor Commutation, Digitally Controlled SMPS Front-End, Sensor Hub and Signal Conditioning, Battery-Operated Wearable Devices, Automotive Interior Lighting.
RGB LED Lighting Control
The PIC12F1571-I/MS is well matched to multi-channel LED lighting because it integrates three independent 16-bit PWM channels with edge-aligned and center-aligned modes. The PIC12F1571 drives each color channel at PWM frequencies above 1 kHz to avoid visible flicker, while the 16-bit resolution yields dimming steps below 0.002% duty cycle for smooth low-light fade-out. Combined with the two on-chip comparators that can sense LED overcurrent and shut down the PWMs in hardware, this 8-pin MCU replaces external PWM ICs and reduces BOM count. Operating at 2.0V to 5.5V and -40C to +85C, it suits architectural and decorative LED fixtures.
Recommended
Stepper Motor Commutation
The PIC12F1571-I/MS generates two-phase or three-phase stepper drive signals with its three 16-bit PWMs, each with hardware fault shutdown from the on-chip comparators. Phase advance and microstepping tables fit comfortably in 1.75 KB Flash, and the 32 MHz core executes commutation routines in microseconds with deterministic interrupt latency from the hardware stack. The 8-MSOP package keeps the MCU footprint under 15 mm^2, ideal for the small stepper driver boards used in camera autofocus, 3D printer extruders, and miniature valve actuators where PCB space is constrained.
Recommended
Digitally Controlled SMPS Front-End
The PIC12F1571-I/MS runs a digital control loop for a small isolated or non-isolated SMPS by using its high-speed 16-bit PWM to drive a power MOSFET gate, the 10-bit ADC to sense output voltage, and the comparator for cycle-by-cycle overcurrent protection. The 32 MHz instruction throughput closes a 100 kHz control loop with about 80 spare cycles per switching period for telemetry and housekeeping. The -40C to +85C industrial range and 2.0V to 5.5V VDD align with auxiliary supply rails commonly available in industrial power supplies, replacing legacy analog UC3842-style controllers with a programmable digital alternative.
Recommended
Sensor Hub and Signal Conditioning
The PIC12F1571-I/MS serves as a low-power sensor hub that digitizes analog signals with its 10-bit ADC and routes processed data over GPIO bit-banged interfaces. The on-chip 5-bit DAC and two comparators handle threshold detection and analog wake-up from sleep, while the three PWMs can drive status LEDs or buzzer tones. With six GPIO and 128 bytes RAM, the MCU handles multiple slow sensors in industrial IoT edge nodes, smart thermostats, and HVAC damper controllers where the MSOP-8 footprint fits behind the sensor element.
Recommended
Battery-Operated Wearable Devices
The PIC12F1571-I/MS in the LF variant (PIC12LF1571-I/MS) operates down to 1.8V, allowing direct connection to a single Li-ion cell near end-of-discharge. The three PWMs can drive haptic feedback motors and RGB indicator LEDs, while the ADC monitors battery voltage through a high-impedance divider. The 8-MSOP package height of 1.1 mm makes it usable inside thin wearable enclosures such as fitness bands, smart watches and medical patches where PCB thickness is below 1.6 mm.
Recommended
Automotive Interior Lighting
The PIC12F1571-I/MS drives automotive ambient interior lighting strips where three independent 16-bit PWM channels provide smooth color and brightness transitions across multiple LED zones. The 32 MHz instruction rate supports LIN-style bit-banged communication with the vehicle body controller, and the industrial -40C to +85C range covers cabin temperatures. The 8-MSOP package fits behind dashboard trim without altering the lighting module mechanical envelope, replacing discrete LED drivers with a single programmable solution.
Recommended
Recommended Products Summary
Engineering reference data for PIC12F1571-I/MS β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12LF1571-I/MS | PIC12F1571T-I/MS | PIC12F1572-I/MS | PIC12F1501-I/MS | PIC12F1571-E/MS |
|---|---|---|---|---|---|---|
| Package | 8-MSOP (MS) | 8-MSOP (MS) - same | 8-MSOP (MS) - same | 8-MSOP (MS) - same | 8-MSOP (MS) - same | 8-MSOP (MS) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 1.75 KB | 1.75 KB | 1.75 KB | 3.5 KB (+100%) | 1.75 KB | 1.75 KB |
| RAM | 128 B | 128 B | 128 B | 256 B (+100%) | 128 B | 128 B |
| 16-bit PWM Channels | 3 | 3 | 3 | 3 | 2 (plus 2x 10-bit PWM) | 3 |
| Minimum VDD | 2.0 V | 1.8 V (extended low-voltage) | 2.0 V | 2.0 V | 2.0 V | 2.0 V |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 20 MHz | 32 MHz |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +125C (extended) |
| Approx. Unit Price (qty 100, USD) | 0.72 | 0.78 | 0.72 | 0.82 | 0.62 | 0.95 |
Key Differentiators
- Three independent 16-bit PWM channels vs two on PIC12F1501 (vs PIC12F1501-I/MS)
- 1.8V minimum VDD on LF variant (vs PIC12F1571-I/MS (this part))
- Double Flash and RAM in same package (vs PIC12F1572-I/MS)
- Extended -40C to +125C temperature grade (vs PIC12F1571-E/MS)
Design Notes
Place a 100 nF X7R ceramic decoupling capacitor within 4 mm of the VDD pin (pin 8) and connect its ground return directly to the VSS pin (pin 7). For noisy environments where the PIC12F1571-I/MS drives PWM loads, add a 10 uF bulk capacitor in parallel. The device draws roughly 1 mA active at 32 MHz and falls to sub-microamp levels in sleep; use the comparators to wake on analog thresholds to minimize average current.
When using the three 16-bit PWM outputs, route each PWM trace away from the MCLR/VPP pin and the ICSP lines to avoid injected noise during in-circuit programming. Keep PWM traces short and matched in length for center-aligned phase control. The exposed die pad on the 8-MSOP is not electrically connected and should be soldered to the PCB thermal land for mechanical reliability.
Do not exceed 5.5 V on VDD - the absolute maximum rating is 6.5 V but operation above 5.5 V is not specified. The MCLR pin (pin 5) is a high-voltage programming input; if unused for reset, tie it to VDD through a 10 kohm resistor to avoid spurious resets. When migrating from the PIC12F1501, note that the PWM channel count differs (2x 16-bit + 2x 10-bit on the F1501 vs 3x 16-bit on the F1571), so PWM configuration bits must be re-mapped in firmware.
The PIC12F1571-I/MS ADC achieves its 10-bit accuracy only when the source impedance is below 10 kohm. Add an external op-amp buffer if the sensor presents higher impedance. The internal 5-bit DAC reference is ratiometric to VDD; for absolute voltage thresholds, use an external precision reference rather than VDD.
Compliance Information
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified; for automotive applications, Microchip recommends PIC16F or PIC18 AEC-Q100 families. Lead-free and halogen-free per Microchip material declaration.
