PIC18LF25J10-I/SS - 8-Bit 40MHz 32KB Flash MCU | Microchip
MPN: PIC18LF25J10-I/SS ✓ Hoạt độngPIC18LF25J10-I/SS Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and a rich set of peripherals (timers, ADC, UART, I2C, SPI, PWM) into one IC. The PIC18 family uses an enhanced 8-bit Harvard RISC architecture with hardware multiplier and indexed addressing, slotting between simpler 8-bit MCUs (PIC10/12/16) and higher-end dsPIC/MIPS Cortex-M devices. PIC18J-series parts specifically add deep-sleep nanoWatt XLP modes that draw only nanoamps in retention, which extends battery life across years of unattended operation.
Key features of the PIC18LF25J10 include 32KB (16K x 16) Flash, 1024 bytes of SRAM, a 10-bit ADC with up to 13 input channels, two analog comparators, one 8-bit and three 16-bit timers, two MSSP (I2C/SPI) modules, an enhanced USART, and 21 digital I/O pins. The nanoWatt XLP technology enables ultra-low-power sleep modes with consumption under 100 nA, and the wide 2.0V-3.6V supply supports single-cell Li-ion or two-AA designs without level shifting.
Architecturally, this part uses a 16-bit instruction word and 8-bit data path executed in two cycles (or one with the 40 MHz Fosc = 10 MIPS instruction throughput), giving noticeably faster execution than PIC16 while preserving peripheral compatibility. The PIC18J family integrates on-chip voltage regulation and supports both internal and external oscillator sources for flexible clocking.
Typical applications include battery-powered sensor nodes, small home appliances, low-end human-interface devices, USB-less peripherals, industrial sensor conditioning, and battery chargers. It is widely used as a lower-memory complement to the 64KB PIC18F25K22 or as a low-power alternative to legacy PIC18F2420 designs.
When designing with this device, ensure your programmer supports the ICSP ICD-3 / PICkit-3 / PICkit-4 interfaces to leverage boundary-scan and runtime debugging, and observe decoupling requirements (100 nF + bulk) on VDD/VDDcore. Battery-backed designs should configure the deep-sleep modes using the RTCC and WDT to achieve sub-microamp quiescent current.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a faster path to a verified pin-compatible MCU selection.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF25J10-I/SS — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18LF25J10-I/SS (cùng hình factor và footprint) — khác nhau ở I/O Pins, Package, Timers, ADC, Operating Temperature.
PIC18F25J10-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF26J10-I/SS
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF24J10-I/SS
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18LF27J10-I/SS
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF25J10T-I/SS
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF25J10-I/SS Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18 8-bit RISC (Harvard) |
| Family | PIC® 18J series (nanoWatt XLP) |
| Program Memory (Flash) | 32 KB (16K x 16 words) |
| Data Memory (SRAM) | 1024 bytes |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| I/O Pins | 21 |
| ADC | 10-bit, up to 13 channels |
| Analog Comparators | 2 |
| Timers | 1 x 8-bit, 3 x 16-bit |
| Communication Interfaces | 1 x EUSART, 2 x MSSP (I2C/SPI) |
| Nhiệt độ hoạt động | -40C to +85C (industrial) |
| Hộp | 28-SSOP (5.30 mm / 0.209 in width) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Programming/Debug Interface | ICSP (PICkit-3/4, ICD-3, MPLAB Snap) |
Hướng dẫn cấu hình chân PIC18LF25J10-I/SS 28-ssop (5.30 mm / 0.209 in width)
Cấu hình chân cho PIC18LF25J10-I/SS (28-ssop (5.30 mm / 0.209 in width) gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho PIC18LF25J10-I/SS.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
PIC18LF25J10-I/SS phù hợp cho 6 Áp dụngs: Battery-Powered Sensor Node, Home Appliance Control Board, Industrial Sensor Conditioning Module, USB-less Peripheral / HID-Lite Device, Battery Charger Controller, Medical / Health Monitoring Device.
Battery-Powered Sensor Node
The PIC18LF25J10-I/SS is well suited for unattended sensor nodes powered by 2 AA cells or a coin cell, where its nanoWatt XLP Deep Sleep mode holds current consumption under 100 nA. Combined with the 10-bit ADC, two analog comparators, and configurable timer-driven wake sources, an MCU can sample a thermistor or accelerometer every few seconds and remain on a single battery for years. Its 32 KB Flash holds protocols like Modbus over RS-485 or BLE-beacon firmware. The wide 2.0-3.6V range eliminates the need for a boost regulator, simplifying the BOM.
Được đề xuất
Home Appliance Control Board
In small home appliances such as coffee machines, blenders, or fan controllers, the PIC18LF25J10-I/SS replaces legacy bipolar logic with deterministic 10 MIPS performance. Its 21 I/O pins drive keypad scanning, triac-fired AC loads, LED indicators, and rotary encoder inputs; the 10-bit ADC reads mains-scaled voltage and current sense resistors for soft-start control. The 2.0-3.6V supply is compatible with a capacitive-drop + LDO front end for safe mains isolation. Industrial -40C to +85C rating supports operation behind ovens and inside unheated enclosures.
Được đề xuất
Industrial Sensor Conditioning Module
The 28-SSOP PIC18LF25J10-I/SS handles 4-20 mA loop-powered transmitters and bridges small sensor signals to SPI/I2C peripherals. Its analog comparators drive interrupt-based threshold detection without polling overhead, while the 10-bit ADC delivers 1 mV resolution on a 3.3 V supply - sufficient for thermocouple or strain-gauge pre-conditioning. Two MSSP modules simultaneously run an I2C DAC channel and an SPI LCD driver, and the EUSART streams data over RS-485. ECCN-controlled but RoHS-compliant, the part is widely accepted in factory automation.
Được đề xuất
USB-less Peripheral / HID-Lite Device
For HID-class peripherals without USB, the PIC18LF25J10-I/SS hosts PS/2, IrDA, or simple GPIO-based interfaces to legacy keyboards, mice, remote controls, or barcode scanners. Its EUSART and MSSP modules interface with IR LED receivers, while timer-driven PWM drives buzzer tones for keystroke feedback. The 32 KB Flash accommodates USB-HID stacks or vendor-specific command sets for industrial scanners. Designers can move to the PIC18F25J10 if 5V I/O is later required without changing the PCB.
Được đề xuất
Battery Charger Controller
The PIC18LF25J10-I/SS suits low-power Li-ion or Ni-MH charging controllers where its ADC samples cell voltage and current, while PWM generated from a 16-bit timer regulates a buck converter or linear pass element. The nanoWatt XLP sleep with RTCC wakes the part periodically to top-up the battery, and the EUSART reports SoC data to a host MCU via RS-232 or RS-485. The 28-SSOP footprint is well suited to compact charger boards where thermal dissipation must be limited to less than 50 mW.
Được đề xuất
Medical / Health Monitoring Device
In medical peripherals such as handheld blood-pressure monitors, pulse oximeter front-ends, or electronic thermometer bases, the PIC18LF25J10-I/SS provides precise timing for sensor drive and DSP-light filtering on 8-bit MCU signals. The analog comparators enable fast threshold detection of pulse waveforms while the 10-bit ADC accurately digitizes the slow envelope. RoHS compliance, industrial -40C to +85C operating range, and Microchip's medical-grade change notifications ease ISO 13485 vendor-management qualification.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF25J10-I/SS — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18F25J10-I/SS | PIC18LF26J10-I/SS | PIC18LF24J10-I/SS | PIC18LF27J10-I/SS | PIC18LF25J10T-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP | 28-SSOP | 28-SSOP | 28-SSOP | 28-SSOP |
| Core Architecture | PIC18 8-bit (Harvard) | PIC18 8-bit (Harvard) | PIC18 8-bit (Harvard) | PIC18 8-bit (Harvard) | PIC18 8-bit (Harvard) | PIC18 8-bit (Harvard) |
| Program Memory (Flash) | 32 KB | 32 KB | 64 KB | 16 KB | 128 KB | 32 KB |
| SRAM | 1024 B | 1024 B | 1024 B | 1024 B | 1024 B | 1024 B |
| Maximum Frequency | 40 MHz (10 MIPS) | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Supply Voltage | 2.0 V to 3.6 V | 2.0 V to 5.5 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| I/O Pins | 21 | 21 | 21 | 21 | 21 | 21 |
| ADC | 10-bit, 13 ch | 10-bit, 13 ch | 10-bit, 13 ch | 10-bit, 13 ch | 10-bit, 13 ch | 10-bit, 13 ch |
Bảo phân biệt quan trọng
- Only J-series variant at exactly 32 KB Flash in 28-SSOP (vsPIC18LF24J10-I/SS (16 KB) / PIC18LF26J10-I/SS (64 KB))
- NanoWatt XLP deep-sleep under 100 nA at 3.3 V (vsPIC18F25J10-I/SS)
- Same 28-SSOP pinout and peripheral set as K-series 28-SSOP (vsPIC18F25K22-I/SS)
Ghi chú thiết kế
Estimated: To maximize battery life, configure the MCU in Deep Sleep with the RTCC running and the WDT disabled. Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD/VDDcore pins and a low-ESR 10 uF bulk capacitor within 10 mm. Avoid using the internal POR/BOR reset circuits if the supply ramps very slowly; instead, hold MCLR low until VDD is stable. Use an LDO such as the MCP1700-33 instead of a switching regulator if the analog front-end is sensitive to high-frequency ripple.
Keep the ICSP programming pins (PGED1/PGEC1, MCLR) on dedicated test points or header pads; the MCLR pin must have a 10 kohm pull-up and a 100 nF cap to ground for in-circuit debug operation. SSOP package requires 0.65 mm pitch copper pads and reflow profile per IPC/JEDEC J-STD-020 for moisture-sensitive level classification. Keep analog traces away from switching nodes and use a ground plane stitch beneath the part for thermal dissipation.
Do not exceed the absolute maximum VDD of 3.6 V on the LF variant - applying 5 V damages the part. When migrating from the LF to the F variant, recompile with the appropriate configuration bits; the F variant uses different ADC reference behavior. The 28-SSOP and 28-SPDIP variants share the same die but only the SSOP is surface-mount; pinout of the 28-QFN (/ML) variant does NOT match. Always verify your layout against the 28-SSOP footprint supplied in the Microchip device pack.
For SPI communications up to 10 MHz, keep MISO/MOSI/SCK traces short (≤50 mm) and matched to within 5 mm. Place 33 ohm series termination on SCK if the bus exceeds 30 mm or if multiple slaves are chained. For I2C, use 4.7 kohm pull-ups at 100 kHz and 2.2 kohm at 400 kHz, considering the total bus capacitance of all slaves plus MCU capacitance plus PCB trace capacitance.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial -40C to +85C temperature grade. Not AEC-Q100 qualified; for AEC-Q100 automotive designs, Microchip recommends PIC18F25K22-I/SS instead.
