PIC12F1571-I/MF - 8-Bit MCU, 32MHz, 1.75KB Flash, 8-DFN | Microchip
Référence : PIC12F1571-I/MF ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $1.28 | $1,28 |
| 10 | $1.16 | $11,60 |
| 100 | $1.02 | $102,00 |
| 500 | $0.88 | $440,00 |
| 1 000 | $0.76 | $760,00 |
PIC12F1571-I/MF Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash/ROM), volatile working memory (RAM), and peripherals such as timers, ADCs, communication interfaces, and PWMs. The PIC12F1571 belongs to the 8-bit PIC12 family from Microchip, sitting within the broader category of embedded microcontrollers -> microcontrollers -> integrated circuits. This hierarchy places it alongside PIC16, PIC18, PIC24, and dsPIC devices as part of Microchip's PIC architecture.
Key differentiating features include three 16-bit PWMs with independent timers (versus typical 10-bit PWMs in this class), a 32 MHz internal oscillator supporting 16 MHz operation down to 2.3 V, an on-chip 8-bit DAC reference, and a configurable logic cell that lets designers route peripheral functions to pins without firmware changes. The device operates across 2.3 V to 5.5 V and offers 6 I/O pins plus 1 input-only pin, packaged in a space-saving 8-lead DFN footprint.
The PIC12F1571 uses Microchip's enhanced mid-range core (49 instruction set, 16-level hardware stack), enabling deterministic interrupt response within one instruction cycle. Its 16-bit PWM resolution is critical for applications such as LED dimming, full-color RGB lighting, and switch-mode power supply control, where 10-bit PWM produces visible color steps or audible ripple artefacts. The on-chip 5-bit DAC and reference module simplify analog set-point generation.
Typical applications include RGB LED color mixing, high-resolution stepper motor control, fan speed control via closed-loop PWM, digital power supply compensation, and battery-powered sensor nodes. In each case the 16-bit PWM resolution directly improves control smoothness and reduces external component count.
When designing with this MCU, derate CPU clock when VDD falls below 3.0 V (per the datasheet). Always use proper decoupling - 100 nF ceramic close to VDD plus 10 uF bulk - and place the exposed pad of the DFN package on a contiguous ground copper pour for thermal dissipation and low-impedance return.
This page synthesizes distributor pricing, parametric alternatives, and practical engineering notes drawn from manufacturer datasheets and reference designs, providing context not found in any single source.
Alternatives de remplacement direct pour PIC12F1571-I/MF — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC12F1571-I/MF (même facteur de forme et même empreinte) — différant par Operating Temperature, Comparators, Package, ADC, Core Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC12F1572-I/MF
✅ Remplacement direct✓ En stock
$0.85 / unité
Voir la fiche technique →PIC12F1571-E/MF
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$0.89 / unité
Voir la fiche technique →PIC12F1571T-I/MF
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$0.65 / unité
Voir la fiche technique →PIC12LF1571-I/MF
✅ Remplacement direct✓ En stock
$0.58 / unité
Voir la fiche technique →PIC12F1501-I/MF
✅ Remplacement direct✓ En stock
$0.59 / unité
Voir la fiche technique →PIC12F1571-I/MF Valeurs maximales et caractéristiques électriques
| Program Memory Type | Flash |
| Program Memory Size | 1.75 KB (1K x 14) |
| RAM Size | 128 bytes |
| CPU Core | PIC (Enhanced Mid-Range 8-bit) |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage Range | 2.3 V to 5.5 V |
| 16-bit PWM Channels | 3 (independent) |
| I/O Pins | 6 |
| Package Type | 8-DFN (3x3 mm, exposed pad) |
| Type de montage | Surface Mount |
| Plage de température de fonctionnement | -40 C to +85 C (Industrial) |
| Comparators | Yes (1) |
| On-chip DAC / Reference | Yes (5-bit DAC, FVR) |
| Niveau MSL | MSL1 (per JEDEC J-STD-020) |
| Statut RoHS | Compliant |
| Lead Free | Yes |
Configuration des broches de PIC12F1571-I/MF
| Broche 1 | VDD — Positive supply voltage (2.3 V to 5.5 V) |
| Broche 2 | RA5 — Bidirectional I/O / analog input / PWM3 |
| Broche 3 | RA4 — Bidirectional I/O / analog input / PWM2 |
| Broche 4 | RA3 — Input-only / MCLR / analog input |
| Broche 5 | RA2 — Bidirectional I/O / analog input / PWM1 / comparator output |
| Broche 6 | RA1 — Bidirectional I/O / analog input / comparator input |
| Broche 7 | RA0 — Bidirectional I/O / analog input / ICSPDAT |
| Broche 8 | VSS — Ground reference / exposed thermal pad |
Applications typiques
PIC12F1571-I/MF convient pour 7 applications: RGB LED Color Mixing Lighting, Stepper Motor Microstepping Control, Switched-Mode Power Supply (SMPS) Digital Compensation, Fan Speed (PWM) Closed-Loop Control, Battery-Powered IoT Sensor Node, Automotive Interior LED Driver, Digital Potentiometer Replacement.
RGB LED Color Mixing Lighting
The PIC12F1571-I/MF's three independent 16-bit PWMs make it ideal for driving RGB LED strings with smooth color mixing. Each PWM channel drives one color channel (red, green, blue), and 16-bit resolution eliminates the visible color stepping that 10-bit PWM produces at low duty cycles - critical for high-end architectural lighting. The 32 MHz core runs fade algorithms in real time, while the 1.75 KB Flash stores lookup tables for color-temperature curves. According to the Microchip datasheet, the three PWMs can also be synchronized for white-channel dimming, giving the designer full control over CRI and color rendering. Battery-powered accent lighting benefits from the 2.3 V minimum supply.
Recommandé
Stepper Motor Microstepping Control
The PIC12F1571-I/MF generates the high-resolution step pulses needed for microstepping stepper motor drivers. Its 16-bit PWM provides 65,536 microsteps per full step versus 1,024 from a 10-bit PWM, dramatically reducing audible resonance and vibration in precision motion control. According to the Microchip datasheet, each PWM channel can be paired with a comparator for closed-loop current control, eliminating external op-amps. The 32 MHz core services the interrupt rate needed to maintain the microstep profile. Compact 8-pin DFN fits on small stepper driver PCBs used in camera autofocus, 3D printer extruders, and robotics actuators.
Recommandé
Switched-Mode Power Supply (SMPS) Digital Compensation
The PIC12F1571-I/MF delivers the PWM resolution required to implement digital loop compensation in small switched-mode power supplies. Its three 16-bit PWMs can drive primary-side FET timing, secondary-side synchronous rectification, and auxiliary functions with sub-1 ns effective duty resolution. Per the Microchip datasheet, the on-chip 5-bit DAC and fixed-voltage reference provide analog setpoints for voltage-mode or peak-current-mode control. The 32 MHz core closes the feedback loop at high PWM frequencies without saturating CPU bandwidth. Battery chargers for Li-ion cells and 12 V to 5 V POL converters are typical target applications.
Recommandé
Fan Speed (PWM) Closed-Loop Control
The PIC12F1571-I/MF's on-chip comparator and 16-bit PWM combine to deliver closed-loop fan speed control from a tachometer input. The comparator digitizes the tach feedback without external components, while the 16-bit PWM drives the fan control input at the 25 kHz or 50 kHz frequencies required by 4-wire PWM fans. Per the Microchip datasheet, the configurable logic cell routes the comparator output to a PWM fault input, shutting down the output on stalled-fan detection - critical for server and embedded thermal management. The 8-pin DFN footprint fits inside fan hubs and small blower assemblies.
Recommandé
Battery-Powered IoT Sensor Node
The PIC12F1571-I/MF suits coin-cell and single-cell Li-ion sensor nodes because it operates down to 2.3 V with low sleep current per the Microchip datasheet. Its 1.75 KB Flash and 128 B RAM host small sensor-fusion routines for temperature, humidity, and motion sensing, while the 16-bit PWM can drive an indicator LED or piezo buzzer for user feedback. Wake-on-timer or wake-on-comparator modes let the device sleep for years on a CR2032 cell. The compact 8-DFN (3x3 mm) package fits inside wearable bands and small sensor stickers.
Recommandé
Automotive Interior LED Driver
The PIC12F1571-I/MF -I grade operates across -40 C to +85 C and runs from 5 V automotive rails, making it suitable for interior lighting, ambient strip control, and backlight dimming. According to the Microchip datasheet, the three 16-bit PWMs can drive RGB ambient strips independently, supporting fade-in/fade-out transitions and color-temperature adjustment tied to day/night driving modes. Pairing with LIN or CAN transceivers (not integrated) enables body-network connectivity. For under-hood or powertrain applications, the -E (extended) temperature grade variant is recommended.
Recommandé
Digital Potentiometer Replacement
The PIC12F1571-I/MF's 16-bit PWM and on-chip DAC enable software-defined resistance, voltage, or current setpoints that replace mechanical potentiometers in production calibration. The PWM filtered by an external RC network produces a smooth DC voltage, while the 5-bit DAC provides a coarse reference. Per the Microchip datasheet, the comparator monitors the filtered voltage for closed-loop trimming. This eliminates manual trimpots in volume production and improves calibration accuracy - common in sensor module factory trim and audio gain adjustment.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC12F1571-I/MF — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC12F1572-I/MF | PIC12F1571-E/MF | PIC12F1571T-I/MF | PIC12LF1571-I/MF | PIC12F1501-I/MF |
|---|---|---|---|---|---|---|
| Package | 8-DFN (3x3 mm) | 8-DFN (3x3 mm) - same | 8-DFN (3x3 mm) - same | 8-DFN (3x3 mm) - same | 8-DFN (3x3 mm) - same | 8-DFN (3x3 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 1.75 KB | 3.5 KB | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB |
| RAM | 128 B | 256 B | 128 B | 128 B | 128 B | 128 B |
| Max CPU Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| PWM Resolution | 16-bit x 3 | 16-bit x 3 | 16-bit x 3 | 16-bit x 3 | 16-bit x 3 | 10-bit x 3 |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 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 |
| Temperature Grade | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +125 C (Extended) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Principaux différenciateurs
- Three independent 16-bit PWMs versus typical 10-bit PWMs in this class (vs PIC12F1501-I/MF)
- Pin-compatible upgrade path to PIC12F1572 with double Flash and RAM (vs PIC12F1571 (this product))
- Low-voltage PIC12LF1571 sibling for 1.8 V battery applications (vs PIC12LF1571-I/MF)
Notes de conception
Place a 100 nF X7R ceramic decoupling capacitor within 2 mm of the VDD pin and a 10 uF bulk capacitor on the supply rail. According to the Microchip datasheet, the device may glitch if VDD droops below 2.3 V during PWM transitions; the bulk capacitor absorbs the high-current transients from output switching. For battery applications, add a 100 kohm pull-down on MCLR to avoid leakage paths.
The 8-DFN package dissipates heat primarily through the exposed thermal pad (pin 8). Connect this pad to a contiguous ground copper pour that extends at least 10 mm x 10 mm to keep junction temperature within the 85 C industrial limit. Estimated: in a typical 25 C ambient with 10 mm x 10 mm ground pour on a 2-layer FR-4 board, theta_JA is approximately 80 C/W, giving 100 mW safe dissipation before derating.
Keep analog input traces (RA0-RA5) short and isolated from PWM or digital switching signals on adjacent layers. Place the comparator input RC filter network within 5 mm of the pin to minimize noise pickup. For RGB LED applications, route all three PWM traces with matched length to maintain color synchronization. Use a four-layer stackup with continuous ground plane for best EMI performance.
Do not exceed the maximum clock-vs-VDD relationship: at VDD below 3.0 V the maximum CPU clock is limited to 16 MHz. Programming the OSCCON register for 32 MHz below 3.0 V will produce out-of-spec timing. Also note that the I2C and SPI peripherals require the PPS (peripheral pin select) feature to remap pins - default pin assignments do not match the 8-pin package out-of-the-box.
Informations de conformité
RoHS and lead-free per Microchip product page. AEC-Q100 not qualified - for automotive choose AEC-Q100 qualified PIC portfolio. JEDEC MSL1 rating per J-STD-020.
