PIC16F18425-I/ST - 8-Bit 32MHz 14KB Flash MCU | Microchip | TSSOP-14
N.º da peça: PIC16F18425-I/ST ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $1.51 | $1,51 |
| 10 | $1.36 | $13,60 |
| 100 | $1.21 | $121,00 |
| 500 | $1.07 | $535,00 |
| 1.000 | $0.95 | $950,00 |
PIC16F18425-I/ST Visão geral
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data memory, and peripherals into one package. The PIC16F18425 belongs to the PIC16 mid-range family and sits within the broader Microchip 8-bit PIC taxonomy (8-bit MCU -> PIC16 mid-range -> PIC16F184xx -> enhanced mid-range core). These devices execute one instruction per cycle using a RISC architecture optimized for deterministic real-time control and low power consumption.
Key features of the PIC16F18425-I/ST include: 32MHz internal oscillator (8MHz with 4x PLL), 14KB Flash with self-programmability, 1KB SRAM, 256 bytes of EEPROM, a 12-bit Analog-to-Digital Converter with Computation (ADCC), a 5-bit DAC, two PWMs, a Comparator, a Complementary Waveform Generator (CWG), EUSART, SPI, and I2C peripherals. The device supports 1.8V to 5.5V operation and includes the nanoWatt XLP sleep modes that draw as little as 30 nA in sleep with the Real-Time Clock active.
Architecturally, the PIC16F18425 uses an enhanced mid-range 8-bit core with a 14-bit instruction word, hardware multiplier, and direct/interrupt-driven CIPs that offload tasks like signal generation, waveform measurement, and communication from the CPU. The 12-bit ADCC integrates averaging, filtering, threshold detection, and auto-conversion triggers, reducing firmware overhead for sensor acquisition loops. Functional Safety (FuSa) features support IEC 61508 SIL 1/2 capable designs in industrial control systems.
Typical applications include battery-powered IoT sensor nodes, consumer appliance control, LED lighting drivers, low-end motor control, battery chargers, and industrial sensor interfaces. The XLP technology suits remote controls, wearables, and energy-harvesting devices where quiescent current is critical.
When designing with this MCU, ensure decoupling capacitors (100nF and 10uF) are placed close to VDD/VSS, reserve the ICSP programming pins (ICSPCLK/ICSPDAT), and configure the configuration words for the chosen oscillator, watchdog, and code protection settings. Use the MPLAB X IDE with the XC8 compiler for firmware development.
This page synthesizes distributor pricing, drop-in alternatives within the TSSOP-14 footprint, and practical design notes not found in the manufacturer datasheet.
Alternativas drop-in para PIC16F18425-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 PIC16F18425-I/ST (mesmo formato e footprint) — diferindo em ADC, Core Architecture, Package, Program Memory (Flash), Operating Temperature.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16F18425-E/ST
✅ Drop-In✓ Em estoque
$1.28 / unidade
Ver ficha técnica →PIC16F18424T-I/ST
✅ Drop-In✓ Em estoque
$0.81 / unidade
Ver ficha técnica →PIC16F18325-I/ST
✅ Drop-In✓ Em estoque
$1.16 / unidade
Ver ficha técnica →PIC16F1825-I/ST
✅ Drop-In✓ Em estoque
$1.32 / unidade
Ver ficha técnica →PIC16F18425-I/ST Classificações máximas e características elétricas
| Core Architecture | PIC16 enhanced mid-range 8-bit |
| CPU Speed | 32 MHz (max, with PLL) |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB |
| EEPROM | 256 bytes |
| Operating Voltage Range | 1.8 V to 5.5 V |
| ADC | 12-bit ADCC (Analog-to-Digital Converter with Computation) |
| DAC | 5-bit DAC |
| PWM Modules | 2 x 10-bit PWM |
| Comparators | Yes |
| CWG | Complementary Waveform Generator |
| Communication Peripherals | EUSART, SPI, I2C |
| Encapsulamento | 14-pin TSSOP (ST) |
| Temperatura de operação | -40 C to +85 C (industrial) |
| Tipo de montagem | Surface Mount |
| Nível MSL | 1 |
| Status RoHS | Compliant |
Configuração de pinos do PIC16F18425-I/ST
| Pino 1 | RA0/ICSPDAT — Bidirectional I/O / ICSP data |
| Pino 2 | RA1/ICSPCLK — Bidirectional I/O / ICSP clock |
| Pino 3 | RA2 — Bidirectional I/O |
| Pino 4 | RA3/MCLR — Input only / Master Clear (reset) |
| Pino 5 | RA4 — Bidirectional I/O |
| Pino 6 | RA5 — Bidirectional I/O |
| Pino 7 | VSS — Ground reference |
| Pino 8 | RA6 — Bidirectional I/O |
| Pino 9 | RA7 — Bidirectional I/O |
| Pino 10 | RB0 — Bidirectional I/O / interrupt-on-change |
| Pino 11 | RB1 — Bidirectional I/O / interrupt-on-change |
| Pino 12 | RB2 — Bidirectional I/O / interrupt-on-change |
| Pino 13 | RB3 — Bidirectional I/O / interrupt-on-change |
| Pino 14 | VDD — Positive power supply |
Aplicações típicas
PIC16F18425-I/ST é adequado para 7 aplicaçãos: Battery-Powered IoT Sensor Node, Consumer Appliance Control Panel, LED Lighting Driver Controller, Low-End Motor Control (BLDC / Stepper), Battery Charger and Power Bank Controller, Industrial Sensor Interface / 4-20mA Loop Transmitter, Wearable Fitness and Health Band.
Battery-Powered IoT Sensor Node
The PIC16F18425-I/ST is ideal for battery-powered IoT sensor nodes thanks to its nanoWatt XLP technology delivering sleep currents down to 30 nA with the Real-Time Clock active. The integrated 12-bit ADCC with hardware averaging and threshold detection enables accurate sensor reads while the CPU stays in sleep, dramatically reducing average power. Operating from 1.8V to 5.5V, the device runs directly from a single CR2032 coin cell or a 1S Li-ion battery. The on-chip EUSART and SPI/I2C peripherals support popular low-power transceivers like LoRa or BLE modules without external components. Use the eXLP deep-sleep modes between sensor samples to extend battery life to multiple years.
Recomendado
Consumer Appliance Control Panel
The PIC16F18425-I/ST suits consumer appliance control panels requiring user-interface I/O, sensor acquisition, and reliable motor or relay control. Its two 10-bit PWM channels drive LED backlights, buzzer tones, or low-side MOSFETs for solenoid/valve switching. The 12-bit ADCC reads temperature, humidity, and current-sense signals directly, while the integrated Comparator implements fast over-current protection without CPU latency. The TSSOP-14 footprint is small enough for compact HMI boards in coffee machines, washing machines, or microwave ovens. Functional Safety features support IEC 60730 Class B appliance safety compliance.
Recomendado
LED Lighting Driver Controller
The PIC16F18425-I/ST controls dimmable LED lighting with high resolution thanks to its Complementary Waveform Generator (CWG) and 10-bit PWM modules. The CWG produces dead-band-controlled complementary outputs suitable for half-bridge LED drivers and synchronous buck converters, while the PWMs provide smooth logarithmic dimming curves that match human perception. The 12-bit ADCC monitors LED current via shunt resistors and adjusts duty cycle in firmware for constant-current regulation. XLP low-power modes allow the controller to remain in standby with wake-on-motion or wake-on-IR for smart-lighting applications.
Recomendado
Low-End Motor Control (BLDC / Stepper)
For low-end brushless DC or stepper motor control in fans, pumps, and small appliances, the PIC16F18425-I/ST delivers sufficient MIPS to run sensorless back-EMF commutation or open-loop stepper drive. The 32MHz CPU executes 8 MIPS, fast enough for 20 kHz PWM switching frequencies with adequate margin for control loops. The CWG generates complementary gate-drive signals with programmable dead time, eliminating external timing circuitry. The 12-bit ADCC samples back-EMF voltage or current-sense amplifiers with hardware-triggered conversions synchronized to the PWM period, reducing CPU overhead.
Recomendado
Battery Charger and Power Bank Controller
The PIC16F18425-I/ST controls single-cell Li-ion/LiPo chargers and small power banks by integrating the ADC, DAC, PWM, and comparator peripherals needed for closed-loop charge management. The 12-bit ADCC accurately measures battery voltage and charge current via sense resistors, while the 5-bit DAC programs the reference for the charge-voltage comparator. The integrated Comparator provides fast over-current and over-voltage protection independent of firmware execution timing. EUSART/SPI/I2C interfaces support SMBus battery gauge protocols and external fuel-gauge ICs.
Recomendado
Industrial Sensor Interface / 4-20mA Loop Transmitter
In industrial sensor interface modules and 4-20mA loop-powered transmitters, the PIC16F18425-I/ST provides the ADC, computation, and communication peripherals required for signal conditioning. The 12-bit ADCC with hardware oversampling achieves effective resolution above 16 bits, suitable for pressure, flow, and level transmitters. EUSART supports HART or Modbus RTU communication when paired with an external modem IC. The TSSOP-14 footprint fits inside small sensor heads, and the XLP sleep modes minimize loop-current draw below 3.5 mA to leave margin for the transmitter output.
Recomendado
Wearable Fitness and Health Band
The PIC16F18425-I/ST powers wearable fitness bands and health monitors where battery life, small size, and integrated peripherals are paramount. The TSSOP-14 footprint fits inside compact wrist-band enclosures, while XLP nanoWatt sleep modes extend battery life to weeks per charge. The 12-bit ADCC reads heart-rate optical sensors, temperature, and accelerometer outputs with hardware averaging to suppress motion artifacts. EUSART and I2C connect to BLE radio modules and low-power MEMS sensors, while the 5-bit DAC drives haptic-feedback drivers or LED indicators.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16F18425-I/ST — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16F18425-E/ST | PIC16F18424T-I/ST | PIC16F18325-I/ST | PIC16F1825-I/ST |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TSSOP-14 | TSSOP-14 (same) | TSSOP-14 (same) | TSSOP-14 (same) | TSSOP-14 (same) |
| Program Memory (Flash) | 14 KB | 14 KB | 7 KB | 14 KB | 14 KB |
| Data SRAM | 1 KB | 1 KB | 512 B | 1 KB | 1 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| ADC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 10-bit ADC | 10-bit ADC |
| Operating Temperature | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Functional Safety (FuSa) | Yes | Yes | Yes | No | No |
Principais diferenciais
- Functional Safety (FuSa) features for IEC 61508 SIL 1/2 designs (vs PIC16F18325-I/ST)
- 12-bit ADCC with computation and oversampling (vs PIC16F1825-I/ST)
- Industrial temperature range with TSSOP-14 form factor (vs PIC16F18425-E/ST)
Notas de projeto
Place a 100nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 14) and a bulk 10uF capacitor on the same supply trace. For battery-powered designs, place a 100nF capacitor directly on VDD and consider an additional 1uF capacitor on the MCLR/pull-up network to suppress inrush current spikes that can cause MCU resets during low-battery conditions.
Reserve the ICSP programming pins (RA0/ICSPDAT and RA1/ICSPCLK) as dedicated programming/debugging pins; do not assign them to mission-critical peripherals unless they can be tri-stated during ICSP. Keep the MCLR line (pin 4) accessible for in-circuit programming by routing it to a header or test pad. Add a 10k pull-up on MCLR if not using the internal MCLR configuration.
Do not exceed VDD of 5.5V absolute maximum; reverse-voltage or transient spikes above 6V will damage the MCU. Ensure unused I/O pins are configured as outputs driving low, or as inputs with internal weak pull-ups enabled, to minimize power consumption in sleep. Always configure unused interrupt-on-change pins to prevent false wake-ups from noise.
Informações de conformidade
RoHS compliant per Microchip product page; industrial temperature grade -40C to +85C. Functional Safety (FuSa) support for IEC 61508 SIL 1/2 and IEC 60730 Class B. Not AEC-Q100 qualified - choose AEC-Q100 qualified variants for automotive applications.
