PIC16F1574-I/ST - 8-Bit 32MHz MCU, 7KB Flash | Microchip
N.º da peça: PIC16F1574-I/ST ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $1.16 | $1,16 |
| 10 | $1.05 | $10,50 |
| 100 | $0.93 | $93,00 |
| 500 | $0.84 | $420,00 |
| 1.000 | $0.76 | $760,00 |
PIC16F1574-I/ST Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory (Flash/ROM), data memory (RAM), and peripherals such as timers, communication interfaces, and analog blocks. The PIC16F1574 sits within the broader PIC16 mid-range family and inherits the enhanced mid-range CPU core architecture, balancing deterministic interrupt response with low power consumption. Hypernyms for this part include: PIC16 -> PIC mid-range -> 8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC. Synonyms commonly used in datasheets include "MCU", "microcontroller unit", and "microcomputer".
Key features include 7 KB (4K x 14) self-programmable Flash, 512 bytes of RAM, 128 bytes of high-endurance EEPROM, four 16-bit PWMs with independent timing, a 10-bit ADC with up to 8 channels, a 5-bit Digital-to-Analog Converter (DAC), and integrated Core Independent Peripherals (CIPs). The device operates from 1.8 V to 5.5 V across an industrial temperature range of -40 °C to +85 °C, with typical active current below 1 mA at 32 MHz. The TSSOP-14 package is RoHS-compliant and uses industry-standard JEDEC JESD51 thermal and J-STD-020 MSL-1 moisture sensitivity ratings.
The architecture pairs the enhanced mid-range core with the 16-bit PWM peripheral that supports edge-aligned, center-aligned, and complementary output modes. Combined with the 5-bit DAC and comparator-based CIPs, the device can implement closed-loop LED dimming, motor control loops, and signal-generation tasks without CPU intervention. In-system programmability via ICSP and EUSART-based bootloader options support field firmware upgrades, while the 32 MHz internal oscillator eliminates an external crystal in many designs.
Typical applications include LED lighting control and color-mixing drivers, brushed DC motor and small fan speed controllers, general-purpose sensor signal conditioning, low-cost consumer appliances, and battery-powered IoT nodes that require a mix of analog measurement and PWM output. The 16-bit PWM also suits small stepper/digital-to-analog synthesis tasks.
When designing with this part, note that pin count is limited to 14, so multiplex peripheral assignments carefully. Use MPLAB X IDE with the XC8 compiler and MPLAB Code Configurator for peripheral setup; both are free downloads from Microchip.
This page consolidates distributor pricing, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet, giving engineers and buyers a single source for PIC16F1574-I/ST evaluation.
Alternativas drop-in para PIC16F1574-I/ST — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16F1574-I/ST (mesmo formato e footprint) — diferindo em Package, Program Memory (Flash), Operating Temperature, Operating Temperature Range, Core.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16F1574-I/P
✅ Drop-In✓ Em estoque
$0.91 / unidade
Ver ficha técnica →PIC16F1574T-I/ST
✅ Drop-In✓ Em estoque
$0.86 / unidade
Ver ficha técnica →PIC16F1574-E/ST
✅ Drop-In✓ Em estoque
$0.98 / unidade
Ver ficha técnica →PIC16F15224-I/ST
✅ Drop-In✓ Em estoque
$0.72 / unidade
Ver ficha técnica →PIC16F1503-I/ST
✅ Drop-In✓ Em estoque
$0.94 / unidade
Ver ficha técnica →PIC16F1574-I/ST Classificações máximas e características elétricas
| Device Family | PIC16F157x (PIC® 16F Series) |
| Core Architecture | 8-bit Enhanced Mid-Range PIC CPU |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 512 bytes |
| Data EEPROM | 128 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| ADC | 10-bit, up to 8 channels |
| DAC | 5-bit, 1 channel |
| PWM Modules | Four 16-bit PWMs (independent timing) |
| Comparators | Yes (Core Independent Peripherals) |
| Communication | EUSART, MSSP (I2C/SPI) |
| Timers | Timer0, Timer1, Timer2 |
| I/O Pins | 12 (on 14-pin package) |
| Temperatura de operação | -40 °C to +85 °C (Industrial) |
| Encapsulamento | 14-pin TSSOP (ST) |
| Tipo de montagem | Surface Mount |
| Nível MSL | MSL-1 (JEDEC J-STD-020) |
| Status RoHS | Compliant |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
Configuração de pinos do PIC16F1574-I/ST
| Pino 1 | RA3/AN3/VREF+/T6G/CCP1/PWM1OUT — Bidirectional I/O, analog input 3, positive voltage reference, T6G gate, CCP1/PWM1 output |
| Pino 2 | RA4/AN4/T1G — Bidirectional I/O, analog input 4, T1G gate input |
| Pino 3 | RA5/MCLR/VPP — Bidirectional I/O, master clear (reset) input, programming voltage input |
| Pino 4 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
| Pino 5 | VSS — Ground reference |
| Pino 6 | RB4/AN10/SDI/SDA — Bidirectional I/O, analog input 10, SPI data in or I2C data |
| Pino 7 | RB5/AN11/RX/DT — Bidirectional I/O, analog input 11, EUSART RX or data |
| Pino 8 | RB6/AN12/TX/CK/SCK/SCL — Bidirectional I/O, analog input 12, EUSART TX/clock, SPI clock, I2C clock |
| Pino 9 | RB7/AN13/PWM3OUT — Bidirectional I/O, analog input 13, PWM3 output |
| Pino 10 | RC0/PWM2OUT — Bidirectional I/O, PWM2 output |
| Pino 11 | RC1/PWM1OUT — Bidirectional I/O, PWM1 output |
| Pino 12 | RC2/AN14/PWM4OUT — Bidirectional I/O, analog input 14, PWM4 output |
| Pino 13 | RC3/AN15/CLKR/PWM3OUT — Bidirectional I/O, analog input 15, clock reference output, PWM3 output |
| Pino 14 | RA0/AN0/DAC1OUT/T0CKI/PWM2OUT — Bidirectional I/O, analog input 0, DAC1 output, T0CKI input, PWM2 output |
Aplicações típicas
PIC16F1574-I/ST é adequado para 7 aplicaçãos: LED Lighting and Color-Mixing Driver, Brushed DC Motor and Small Fan Speed Control, Battery-Powered IoT Sensor Node, Consumer Appliance User Interface Controller, General-Purpose Sensor Signal Conditioning, Small Stepper and Digitally-Controlled Potentiometer, Security and Access Control Peripherals.
LED Lighting and Color-Mixing Driver
The PIC16F1574-I/ST is well suited to multi-channel LED lighting and color-mixing drivers because of its four independent 16-bit PWM channels and integrated 5-bit DAC. The 16-bit PWM resolution enables smooth dimming down to 0.0015% duty cycle steps, eliminating visible flicker and 8-bit contouring artifacts in high-end architectural lighting. Typical designs use the PWMs to drive constant-current LED drivers via MOSFET gates, while the DAC sets a bias point or trim current. The 32 MHz CPU keeps up with WS2812-style or DMX-controlled feedback loops. Combined with 7 KB Flash and 512 B RAM, the MCU can host lookup tables for color-temperature curves and dimming curves.
Recomendado
Brushed DC Motor and Small Fan Speed Control
The PIC16F1574-I/ST fits brushed DC motor and small fan speed controllers thanks to its 16-bit PWM (up to four channels) for precise RPM control and its 10-bit ADC for tachometer or back-EMF sensing. The enhanced mid-range core runs closed-loop PID control at 32 MHz without CPU starvation, while the 5-bit DAC and comparators form CIP-based closed loops that adjust duty cycle autonomously. Designers can implement soft-start and stall detection using the ADC plus comparator combination, and the EUSART links the controller to a host MCU or USB-to-UART bridge for telemetry. The 1.8 V to 5.5 V VDD range covers 3.3 V and 5 V motor rails.
Recomendado
Battery-Powered IoT Sensor Node
The PIC16F1574-I/ST is suitable for battery-powered IoT sensor nodes where its 1.8 V to 5.5 V operating range lets a single Li-ion or 2xAA cell stack power the system directly. The mid-range core supports low-power sleep modes in the microamp range with peripheral wake from ADC or comparator thresholds, while the 16-bit PWMs can duty-cycle sensors or radio transceivers. The 10-bit ADC handles thermistor, photodiode, or strain-gauge measurements, and the MSSP supports I2C/SPI sensors. With 7 KB Flash and 512 B RAM, designers can host a lightweight application framework plus calibration tables.
Recomendado
Consumer Appliance User Interface Controller
The PIC16F1574-I/ST drives user-interface controllers in consumer appliances such as coffee makers, blenders, and air purifiers. Its 16-bit PWMs smoothly vary motor speed or heater elements, while the 10-bit ADC reads temperature sensors, rotary encoders, and button matrices. The integrated 5-bit DAC generates reference voltages for sensor-bridge circuits. The 14-pin TSSOP package fits compact appliance mainboards, and the industrial -40 to +85 °C rating survives under-hood and kitchen environments. ICSP enables end-of-line firmware calibration and field firmware updates without disassembly.
Recomendado
General-Purpose Sensor Signal Conditioning
The PIC16F1574-I/ST serves as a general-purpose sensor signal conditioner for factory automation, instrumentation, and HVAC systems. The 10-bit ADC and on-chip comparator form a CIP-based analog front-end that filters, rectifies, and thresholds sensor outputs without CPU overhead. The 16-bit PWMs can synthesize excitation waveforms for resistive bridges or strain gauges, while the EUSART outputs processed data to a host controller. The 7 KB Flash hosts calibration constants and linearization curves, and the TSSOP-14 surface-mount package enables dense PCB integration. The MCU's 5 V tolerance simplifies legacy sensor interface design.
Recomendado
Small Stepper and Digitally-Controlled Potentiometer
The PIC16F1574-I/ST can implement small stepper drivers or digital potentiometer replacements by combining its 16-bit PWMs with the 5-bit DAC. Using two PWMs in complementary mode, the MCU drives an H-bridge through external MOSFETs to step a small bipolar stepper; the 5-bit DAC sets current-limit thresholds. The TSSOP-14 footprint fits into the space once occupied by mechanical pots. With EUSART or I2C, the MCU can accept digital commands from a host processor, making it suitable as a 'digital pot with memory' or trimmer replacement in test fixtures and audio gear.
Recomendado
Security and Access Control Peripherals
The PIC16F1574-I/ST is used in low-cost security peripherals such as PIR sensor signal conditioners, magnetic-contact interfaces, and alarm keypads. The 16-bit PWMs generate alarm-tone outputs without CPU load, the 10-bit ADC reads analog sensors, and the EUSART links to a central panel. The PIC16F1574-I/ST's industrial temperature range and 5.5 V tolerance are advantageous for outdoor and vehicular security hardware. With 7 KB Flash, designers can host custom encryption or rolling-code routines for wireless key fobs. The TSSOP-14 footprint fits inside small PIR housings and contact housings.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16F1574-I/ST — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16F1574-I/P | PIC16F1574T-I/ST | PIC16F1574-E/ST | PIC16F15224-I/ST | PIC16F1503-I/ST |
|---|---|---|---|---|---|---|
| Package | TSSOP-14 (ST) | PDIP-14 (through-hole) | TSSOP-14 (T&R packaging code) | TSSOP-14 (extended temp) | TSSOP-14 (same footprint) | TSSOP-14 (same footprint) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 7 KB (4K x 14) | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB |
| RAM | 512 B | 512 B | 512 B | 512 B | 512 B | 384 B (-25%) |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 20 MHz (-37%) |
| PWM Resolution | 16-bit (4 channels) | 16-bit | 16-bit | 16-bit | 10-bit | 10-bit |
| ADC | 10-bit, up to 8 channels | 10-bit | 10-bit | 10-bit | 10-bit, more channels | 10-bit |
| DAC | 5-bit | 5-bit | 5-bit | 5-bit | 5-bit | None |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C |
| RoHS Compliance | Yes | Yes | Yes | Yes | Yes | Yes |
Principais diferenciais
- Four 16-bit PWM channels at 32 MHz - rare in TSSOP-14 footprint (vs PIC16F15224-I/ST)
- Integrated 5-bit DAC plus 16-bit PWMs (vs PIC16F1503-I/ST)
- Pin-to-pin compatibility with PIC16F1574-I/P (vs PIC16F1574-I/P)
Notas de projeto
The PIC16F1574-I/ST requires a single 1.8 V to 5.5 V supply on VDD (pin 4) with a 100 nF decoupling capacitor placed within 5 mm of the pin. VSS (pin 5) must connect to a low-impedance ground plane. For noisy environments, add a 10 uF bulk capacitor near the MCU. Avoid long VDD traces - use a star routing or wide power plane. The device enters MCLR reset if VDD falls below the BOR threshold; the brown-out reset level is configurable in the configuration words. Estimated: active current at 32 MHz with peripherals off is < 1.5 mA, sleep current < 1 uA typical.
For TSSOP-14 layout, follow JEDEC MO-153 land pattern with 0.65 mm pitch pads. Expose a continuous ground plane under the device to aid thermal dissipation. Place the ICSP signals (MCLR/VPP, ICSPCLK, ICSPDAT) on test points or a 6-pin header for in-circuit programming. Estimated: at typical 32 MHz operation, the MCU dissipates approximately 30 mW of active power - well within the TSSOP-14 thermal envelope without a heatsink. For mixed-signal designs, separate analog (VDD) and digital (AVDD) supply pins if your design supports it - the PIC16F1574 does not have separate AVDD, so filter VDD at the pin.
Avoid these common pitfalls: (1) Failing to set the MCLR pin as a digital input with the WPU disabled when MCLR is not used, which can cause unintended resets; (2) Driving the MCLR pin below VSS or above VDD by more than 0.3 V, which can latch-up; (3) Programming the configuration words with the wrong oscillator mode (HS vs INTOSC), which can prevent ICSP communication; (4) Using the 16-bit PWM at base frequencies that cause integer overflow in the period register at 32 MHz; (5) Connecting analog inputs to signals exceeding VDD by more than 0.3 V. Always check Microchip errata DS80000496 for the latest silicon anomalies before finalizing the design.
When using the PIC16F1574 in mixed-signal designs, isolate the analog and digital sections of the PCB. The 10-bit ADC and 5-bit DAC require low-noise analog ground and a clean VDD supply; route analog signals away from PWM outputs and clock traces. Place a ferrite bead + 10 uF cap on the MCU supply if the board hosts switching converters. The PWM outputs toggle at speeds up to 32 MHz; route them away from analog inputs to minimize capacitive coupling. Estimated: 16-bit PWM at 32 MHz yields a minimum frequency step of approximately 244 Hz when the period is configured to 65535.
Informações de conformidade
RoHS and REACH compliance per Microchip product declaration. AEC-Q100 not qualified for automotive - choose automotive-grade PIC variants if required. MSL-1 per JEDEC J-STD-020 simplifies handling.