PIC16LF18425-E/ST - 8-Bit 32MHz 14KB Flash MCU | Microchip
MPN： PIC16LF18425-E/ST ✓ 啟用中PIC16LF18425-E/ST 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), working RAM, and a rich set of peripherals — timers, ADC, communication interfaces, and I/O — into one package. The PIC16F family sits within the larger hierarchy: PIC16F -> PIC microcontroller -> 8-bit microcontroller -> microcontroller -> embedded processor -> semiconductor. The 8-bit PIC architecture uses a RISC-modified instruction set with a single accumulator (W) and hardware register bank switching, which simplifies firmware development for cost-sensitive, deterministic control tasks such as sensor reading, PWM driving, and simple protocol bridging.
Key features of the PIC16LF18425-E/ST include 14KB Flash, 1KB SRAM, up to 32MHz internal oscillator, two 10-bit PWMs (with complementary and dead-band modes), a hardware Comparator, a 5-bit and 12-bit DAC, a 12-bit ADC with Computation (ADCC) for automated averaging/filtering, a Complementary Waveform Generator (CWG), one EUSART, and SPI/I2C peripherals. These integrated peripherals allow designers to replace several external analog and timing components with a single chip.
The 12-bit ADCC supports automated threshold scanning and oversampling — useful in battery fuel-gauging, sensor linearization, and touch-proximity front ends. The CWG module generates complementary MOSFET drive waveforms with programmable dead time, making this MCU well-suited to half-bridge and full-bridge power converter control, while the DAC enables programmable reference voltages for closed-loop trimming. The EUSART and SPI/I2C blocks expose robust master / slave roles in digital buses.
Typical applications include IoT sensor nodes running on coin-cell batteries, consumer remote controls, small appliance motor control (fans, pumps, valve drives), LED lighting drivers with analog dimming, and industrial low-power data loggers. The 14-pin TSSOP footprint keeps the board area under 30 mm², ideal for compact enclosures.
When designing with the PIC16LF18425-E/ST, take advantage of the nanoWatt XLP sleep modes and peripheral pin select (PPS) to remap digital functions to any I/O — this reduces external wiring and lets you trade peripheral pins for board routing flexibility. Use the 12-bit ADCC rather than software averaging to offload sensor processing and reduce CPU wake time.
This page synthesizes distributor pricing, drop-in PIC16F/LF18425 alternatives with shared 14-pin TSSOP footprints, and practical design notes not found in the standalone datasheet.
直接替換替代品，適用於 PIC16LF18425-E/ST — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC16LF18425-E/ST （相同外形與佔位） — 差異在於 ADC, Package, Program Memory (Flash), Family, Core Architecture.
PIC16LF18425-I/ST
✅ 直接替換聯絡詢價
查看資料表 →PIC16F18425-E/ST
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF18424-E/ST
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF18425-E/SL
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16LF18425-E/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF18425-E/ST 最大額定值與電氣特性
| Core Architecture | 8-bit PIC |
| Family | PIC® XLP™ 16F |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| 工作溫度 | -40 °C to +125 °C (E suffix) |
| 封裝 | 14-TSSOP |
| 安裝類型 | Surface Mount |
| I/O Pins | 11 (per datasheet family) |
| ADC | 12-bit ADCC with computation |
| DAC | 5-bit and 12-bit |
| PWM Channels | 2 (10-bit with complementary outputs) |
| Comparators | Yes |
| CWG (Complementary Waveform Generator) | Yes |
| EUSART | 1 |
| SPI / I2C | Yes |
| RoHS 狀態 | Compliant |
PIC16LF18425-E/ST 腳位配置
| 腳位 1 | RA0/ICSPDAT — Bidirectional I/O / ICSP data |
| 腳位 2 | RA1 — Bidirectional I/O |
| 腳位 3 | RA2 — Bidirectional I/O |
| 腳位 4 | RA3/MCLR — Bidirectional I/O / Master Clear (reset) |
| 腳位 5 | RA4/ICSPCLK — Bidirectional I/O / ICSP clock |
| 腳位 6 | RA5 — Bidirectional I/O |
| 腳位 7 | VSS — Ground reference |
| 腳位 8 | RC0 — Bidirectional I/O |
| 腳位 9 | RC1 — Bidirectional I/O |
| 腳位 10 | RC2 — Bidirectional I/O |
| 腳位 11 | RC3 — Bidirectional I/O |
| 腳位 12 | RC4 — Bidirectional I/O |
| 腳位 13 | RC5 — Bidirectional I/O |
| 腳位 14 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
典型應用
PIC16LF18425-E/ST 適用於 6 應用s: Battery-Powered IoT Sensor Node, LED Lighting with Analog Dimming, Small Appliance Motor Control, Consumer Remote Control / HMI, Industrial Data Logger, Low-Cost Capacitive Touch Interface.
Battery-Powered IoT Sensor Node
The PIC16LF18425-E/ST fits battery-powered IoT sensor nodes thanks to its 1.8V-3.6V VDD range and nanoWatt XLP sleep modes, which drop current consumption to single-digit µA in sleep. With 14 KB Flash it can hold a small BLE/Zigbee stack plus sensor drivers, while the 12-bit ADCC with computation handles temperature, humidity, or battery voltage measurements with on-chip averaging, reducing CPU wake time. The 14-pin TSSOP keeps the board under 30 mm², ideal for coin-cell powered wearables, smart home sensors, and remote telemetry units. Pair with a low-power radio and a CR2032 cell for multi-year battery life.
推薦
LED Lighting with Analog Dimming
The PIC16LF18425-E/ST serves as the control brain in LED lighting fixtures where the 12-bit DAC generates a programmable analog dimming reference, the 2 PWM channels drive MOSFETs for constant-current regulation, and the CWG module produces complementary outputs for totem-pole drivers. Operating at 32 MHz, the MCU handles DALI or 0-10V dimming protocols while maintaining smooth low-end fade-to-dark. The 14-pin TSSOP keeps the driver board compact enough for MR16 bulbs and linear strips. The XLP sleep mode reduces standby power below regulatory limits for energy-star compliance.
推薦
Small Appliance Motor Control
In small appliance motor control such as fans, pumps, and valve drives, the PIC16LF18425-E/ST's CWG module generates complementary PWM with programmable dead time, directly driving half-bridge MOSFET stages for brushless DC or brushed motors. The 12-bit ADCC reads back EMF, current, and temperature with on-chip oversampling, while the hardware Comparator triggers overcurrent protection without CPU intervention. The 1.8V-3.6V VDD range simplifies integration with single-cell Li-ion or 2xAA power stages. The 14-pin TSSOP package fits inside compact appliance housings.
推薦
Consumer Remote Control / HMI
For consumer remote controls, the PIC16LF18425-E/ST combines IR transmission via PWM carrier generation, low-power wake-on-button via interrupt-on-change, and SPI/I2C for interfacing with display drivers or capacitive touch front-ends. The 14 KB Flash accommodates complex protocol stacks (RC5, NEC, or proprietary), while the EUSART enables UART-based IR or RF modules. Sleep current in the nanoWatt range extends coin-cell battery life to multiple years. The 14-pin TSSOP is small enough for slim-line remote enclosures.
推薦
Industrial Data Logger
The PIC16LF18425-E/ST powers industrial data loggers in remote or battery-backed installations where the 12-bit ADCC with computation samples temperature, pressure, and flow sensors with hardware averaging while the CPU sleeps between conversions. The 14 KB Flash stores a small RTOS kernel or sequential logger firmware, and the 1 KB RAM buffers measurement frames before SPI flash writes. The EUSART enables RS-485 communication with external industrial networks. The industrial temperature grade (-40°C to +125°C on E suffix) supports outdoor and process-industry environments.
推薦
Low-Cost Capacitive Touch Interface
The PIC16LF18425-E/ST implements low-cost capacitive touch interfaces through its 12-bit ADCC and hardware Comparator — combined with mTouch® firmware, it can decode up to 11 touch channels using a single ADC and minimal external RC components. The DAC provides a programmable reference voltage for proximity detection thresholds. The CWG module generates the touch excitation waveform. The 14-pin TSSOP keeps the touch PCB compact, while XLP sleep extends battery life in wireless remote controls. This design replaces mechanical buttons with a sleek glass-front panel.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16LF18425-E/ST — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC16LF18425-I/ST | PIC16F18425-E/ST | PIC16LF18424-E/ST | PIC16LF18425-E/SL |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-SOIC |
| Program Memory (Flash) | 14 KB | 14 KB | 14 KB | 7 KB (-50%) | 14 KB |
| Data RAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V (wider) | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +85 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C |
| 12-bit ADCC with Computation | Yes | Yes | Yes | Yes | Yes |
| CWG (Complementary Waveform Generator) | Yes | Yes | Yes | Yes | Yes |
| DAC (5/12-bit) | Yes | Yes | Yes | Yes | Yes |
主要差異化特點
- 12-bit ADCC with on-chip computation vs 10-bit ADC on older PIC16F/LF1825 family (對比PIC16LF1825-I/ST)
- CWG module for complementary drive waveforms (對比PIC16LF18325-E/ST)
- 14 KB Flash for richer firmware stacks (對比PIC16LF18424-E/SL)
設計說明
Take advantage of the XLP nanoWatt sleep modes (Sleep, Deep Sleep, and Watchdog Timer-only Sleep) when designing battery-powered applications. The PIC16LF18425-E/ST draws typically <50 nA in Deep Sleep with WDT disabled. Configure all unused peripherals to off before entering Sleep to avoid parasitic current. Use the Peripheral Pin Select (PPS) feature to remap digital peripherals to any I/O, eliminating the need for external cross-wiring and reducing board area.
The 14-pin TSSOP package requires a 0.65 mm pitch land pattern with thermal relief spokes. Place a 0.1 µF decoupling capacitor within 3 mm of the VDD pin (pin 14) and a bulk capacitor (≥1 µF) near the supply trace. Keep the ICSP pins (RA0/ICSPDAT, RA4/ICSPCLK) routed to a 5-pin programming connector with series 10 kΩ resistors on RA4/ICSPCLK to protect against ESD during in-field firmware updates.
When using the 12-bit ADCC for precision measurements, route analog inputs away from digital I/O and PWM outputs. Use a ground pour on the top layer tied to VSS, with a star-ground at the AGND/VSS pin to minimize digital return currents through analog traces. Place the ADCC reference voltage capacitor (if used) within 5 mm of the VREF+ pin to prevent reference noise pickup.
Do not exceed the absolute maximum VDD of 4.0 V on the PIC16LF18425 variant — this differs from the PIC16F18425 which tolerates 5.5 V. The MCLR pin (RA3) is the only pin with built-in voltage clamping; other pins tolerate VDD + 0.3 V maximum. When migrating firmware from PIC16LF18424 (7 KB Flash), ensure the linker script targets 14 KB Flash even if the code is smaller, to avoid linker overlap errors.
合規資訊
RoHS and REACH compliance status confirmed via Microchip product page. AEC-Q100 not applicable — this is a general-purpose MCU, not automotive grade. For AEC-Q100 qualified PIC16 alternatives, see PIC16F18425-E/ST (extended temp) variants; consult Microchip directly for automotive-grade selection.
