PIC18LF25J11T-I/SO - 32KB Flash 8-bit MCU, 28-SOIC | Microchip
MPN: PIC18LF25J11T-I/SO ✓ Hoạt độngPIC18LF25J11T-I/SO Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and peripherals on one silicon die. The PIC18 family uses a RISC modified-Harvard architecture with 16-bit instructions and an 8-bit data path, balancing deterministic interrupt response with high code density. Within the MCU taxonomy, this part belongs to: MCU -> microcontroller -> embedded controller -> semiconductor. Microchip's nanoWatt XLP technology extends sleep-mode current into the nanoampere range, enabling years of operation from a single battery cell in sleep-dominated duty cycles.
Key specifications include 32KB Flash, 4KB RAM, 1KB EEPROM, 10-bit ADC up to 10 channels, two analog comparators, two USART modules, two MSSP (SPI/I2C) modules, and a full-speed USB 2.0 device controller. The wide 2.0V-3.3V operating range, plus 5V-tolerant digital inputs, makes the device flexible for 3.3V-only or mixed-voltage boards. nanoWatt XLP idle currents below 1 µA in Sleep mode are particularly attractive for always-on sensor nodes. The industrial -40°C to +85°C temperature range is suitable for harsh-environment deployment.
Typical applications include USB human-interface devices (HID), battery-powered sensor hubs, industrial sensor transmitters, low-power instrumentation, and small appliances. The internal 31 kHz and 8 MHz RC oscillators, combined with the PLL, allow BOM cost reduction by removing external crystals in many designs. Designers benefit from Microchip's MPLAB X IDE, XC8 compiler, and the free Microchip Libraries for Applications (MLA) USB stack, which shortens USB-device firmware development.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF25J11T-I/SO — 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 PIC18LF25J11T-I/SO (cùng hình factor và footprint) — khác nhau ở Operating Temperature, ADC, Maximum CPU Speed, Package, Program Memory (Flash).
PIC18LF25J11-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF24J11T-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18LF26J11T-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18LF25J10T-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F25J11T-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF25J11T-I/SO Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit Microcontroller (MCU) |
| Core Architecture | PIC18 RISC modified-Harvard |
| Program Memory (Flash) | 32 KB |
| Data Memory (RAM) | 4 KB |
| Maximum CPU Speed | 12 MIPS (40 MHz internal from PLL) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| ADC | 10-bit, up to 10 channels |
| Analog Comparators | 2 |
| USART | 2 |
| MSSP (SPI / I2C) | 2 |
| USB | USB 2.0 Full-Speed Device, internal transceiver |
| Nhiệt độ hoạt động | -40 °C to +85 °C (Industrial) |
| Hộp | 28-pin SOIC (SO), 300-mil wide, surface-mount |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 1 |
| Trạng thái RoHS | Compliant |
| Lead-Free / Halogen-Free | Lead-free (per Microchip packaging marking); halogen-free status unknown |
Cấu hình chân PIC18LF25J11T-I/SO
| Chân 1 | MCLR — Master Clear (reset) input, active low |
| Chân 2 | RA0 — PORTA I/O / AN0 |
| Chân 3 | RA1 — PORTA I/O / AN1 |
| Chân 4 | RA2 — PORTA I/O / AN2 / VREF- |
| Chân 5 | RA3 — PORTA I/O / AN3 / VREF+ |
| Chân 6 | RA4 — PORTA I/O / T0CKI |
| Chân 7 | RA5 — PORTA I/O / AN4 |
| Chân 8 | RE3 — PORTE I/O (input only) |
| Chân 9 | OSC1 — Oscillator input / CLKI |
| Chân 10 | OSC2 — Oscillator output / CLKO |
| Chân 11 | RC0 — PORTC I/O / T1OSO |
| Chân 12 | RC1 — PORTC I/O / T1OSI |
| Chân 13 | RC2 — PORTC I/O / CCP1 |
| Chân 14 | RC3 — PORTC I/O / SCL |
| Chân 15 | RC4 — PORTC I/O / SDA |
| Chân 16 | RC5 — PORTC I/O / SDO |
| Chân 17 | RC6 — PORTC I/O / TX |
| Chân 18 | RC7 — PORTC I/O / RX / DT |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply voltage (2.0-3.6V) |
| Chân 21 | RB0 — PORTB I/O / INT0 / AN12 |
| Chân 22 | RB1 — PORTB I/O / INT1 / AN10 |
| Chân 23 | RB2 — PORTB I/O / AN8 |
| Chân 24 | RB3 — PORTB I/O / AN9 |
| Chân 25 | RB4 — PORTB I/O / AN11 |
| Chân 26 | RB5 — PORTB I/O / PGM |
| Chân 27 | RB6 — PORTB I/O / PGC |
| Chân 28 | RB7 — PORTB I/O / PGD |
Ứng dụng tiêu biểu
PIC18LF25J11T-I/SO phù hợp cho 6 Áp dụngs: USB Human Interface Device (HID), Battery-Powered Sensor Hub, Industrial Sensor Transmitter, Low-Power Data Logger, Small Appliance Control, USB-to-Serial Bridge / CDC Device.
USB Human Interface Device (HID)
The PIC18LF25J11T-I/SO is well-suited for low-cost USB HID peripherals such as keyboards, mice, gamepads, and custom control surfaces because it integrates a USB 2.0 Full-Speed device controller with an internal transceiver - eliminating the external PHY and precision 3.3V regulator typically required. With 32 KB of Flash, the part comfortably fits HID class drivers plus application logic, while 4 KB of RAM supports HID report buffers and protocol state. The nanoWatt XLP Sleep mode (under 1 µA) is a critical advantage for USB bus-powered accessories that spend most of their time idle. Designers can rely on the free Microchip Libraries for Applications (MLA) USB stack to accelerate firmware development.
Được đề xuất
Battery-Powered Sensor Hub
In battery-powered sensor nodes, the PIC18LF25J11T-I/SO shines through its 2.0-3.6V operating range and nanoWatt XLP Sleep-mode current below 1 µA, enabling multi-year operation on a single CR2032 coin cell or 2x AA alkaline pack. The 10-bit ADC with up to 10 channels handles temperature, humidity, voltage, and current sensing directly, while the two analog comparators enable zero-crossing and brown-out detection without consuming ADC resources. The internal 31 kHz and 8 MHz oscillators - paired with the 4x PLL - eliminate external crystals in most sensor-hub designs, reducing BOM cost and board area. Industrial -40°C to +85°C operation supports outdoor and HVAC deployments.
Được đề xuất
Industrial Sensor Transmitter
Industrial 4-20 mA loop-powered transmitters benefit from the PIC18LF25J11T-I/SO's 2.0-3.6V supply range, 10-bit ADC accuracy, and industrial -40°C to +85°C temperature grade. The two USART modules enable simultaneous sensor readout and digital bus communication (RS-232, RS-485), while the two MSSP peripherals support SPI sensors and I2C EEPROM for calibration data. The 32 KB Flash is ample for calibration tables, linearization routines, and HART or Modbus protocol stacks. Designers can use the part's nanoWatt XLP modes to maintain sensor sampling accuracy without draining loop current.
Được đề xuất
Low-Power Data Logger
The PIC18LF25J11T-I/SO is a strong fit for portable data loggers where battery life and reliability dominate cost. Its 32 KB Flash supports on-chip buffering and circular log structures, while 4 KB of RAM accommodates time-stamped samples between writes to external SPI/I2C EEPROM or SD cards. The 10-bit ADC delivers adequate resolution for temperature, vibration, and pressure logging at sample rates up to 100 kbps, and the nanoWatt XLP Sleep mode keeps quiescent current under 1 µA between scheduled wake-ups. Real-time clock duties can be offloaded to the 31 kHz internal oscillator plus Timer1, eliminating an external RTC chip.
Được đề xuất
Small Appliance Control
Small home appliances - blenders, coffee makers, air purifiers, robotic vacuums - benefit from the PIC18LF25J11T-I/SO's integrated USB (for firmware updates and diagnostics), PWM-driven timers (for motor speed and heating element control), and 5V-tolerant I/O for direct interface to triac optocouplers and zero-cross detectors. The 12 MIPS throughput handles user-interface state machines plus closed-loop control without saturating the core, while 32 KB Flash is sufficient for menu logic, fault handling, and IoT-ready command parsing. Industrial temperature rating ensures reliable operation in kitchens and laundry rooms.
Được đề xuất
USB-to-Serial Bridge / CDC Device
Implementing a USB-to-UART bridge on a 28-SOIC board is straightforward with the PIC18LF25J11T-I/SO: its integrated USB Full-Speed device and dual USART modules allow the part to enumerate as a CDC ACM class device and transparently forward serial traffic at up to 115200 bps (or higher with hardware flow control). The 4 KB RAM buffers bidirectional traffic without overflow, while 32 KB Flash holds the CDC stack plus any vendor-specific commands. Industrial temperature and 3.3V operation make it ideal for replacing legacy RS-232 ports on test equipment, instrument clusters, and embedded development tools.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF25J11T-I/SO — 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 | PIC18LF25J11-I/SO | PIC18LF24J11T-I/SO | PIC18LF26J11T-I/SO | PIC18LF25J10T-I/SO | PIC18F25J11T-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SOIC (SO) | 28-pin SOIC (SO) | 28-pin SOIC (SO) | 28-pin SOIC (SO) | 28-pin SOIC (SO) | 28-pin SOIC (SO) |
| Flash Memory | 32 KB | 32 KB | 16 KB | 64 KB | 32 KB | 32 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 2 KB | 4 KB |
| Supply Voltage | 2.0 - 3.6 V | 2.0 - 3.6 V | 2.0 - 3.6 V | 2.0 - 3.6 V | 2.0 - 3.6 V | 2.0 - 3.6 V |
| USB Peripheral | Yes (USB 2.0 FS Device) | Yes (USB 2.0 FS Device) | Yes (USB 2.0 FS Device) | Yes (USB 2.0 FS Device) | No | Yes (USB 2.0 FS Device) |
| ADC | 10-bit, up to 10 ch | 10-bit, up to 10 ch | 10-bit, up to 10 ch | 10-bit, up to 10 ch | 10-bit, up to 10 ch | 10-bit, up to 10 ch |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| Lifecycle Status | Active | Active | Active | Active | Active | Active |
Bảo phân biệt quan trọng
- Integrated USB 2.0 Full-Speed device with internal transceiver eliminates external PHY (vsPIC18LF25J10T-I/SO)
- Higher Flash density (32 KB vs 16 KB) preserves room for bootloaders and USB stacks (vsPIC18LF24J11T-I/SO)
- Tape-and-reel ('T') packaging optimized for high-volume SMT assembly (vsPIC18LF25J11-I/SO)
Ghi chú thiết kế
The PIC18LF25J11T-I/SO's VDD range is 2.0-3.6V - operation above 3.6V can damage the part. Although the digital I/O pins are 5V-tolerant when VDD is at 3.3V, never drive any pin above 3.6V when VDD is below 3.0V; back-powering through I/O must be validated against the absolute maximum ratings in the datasheet. For battery applications, add a 100 nF decoupling capacitor close to VDD (pin 20) and a 4.7-10 µF bulk capacitor to handle USB inrush.
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 20) and a second 4.7 µF bulk capacitor at the board's power entry. Keep the VUSB decoupling capacitor (D+ line reference, typically 100 nF) close to the D+/D- pins to meet USB 2.0 Full-Speed signal integrity requirements. Use a solid ground plane under the SOIC-28 footprint and route the ICSP pins (RB6/PGC, RB7/PGD, MCLR) so they are accessible for in-circuit programming during prototyping.
Do not assume the LF and F J11 variants are firmware-compatible: PIC18LF25J11T-I/SO runs 2.0-3.6V only, while PIC18F25K22 supports 1.8-5.5V. Configure CONFIG1L/1H for the correct oscillator mode (HS, EC, INTIO) before code commits, and remember that INTIO67+PLL yields 48 MHz (12 MIPS) only when CONFIG1L is set correctly. The USB module requires the VUSB pin (or internal regulator) to be properly enabled in firmware and is sensitive to capacitor selection on D+; follow Microchip's AN572 'USB CDC Virtual COM Port' reference design for first-pass USB compliance.
Route the D+ and D- lines as a 90 Ω differential pair with matched length (within 150 mil) and keep them away from switching nodes or clock traces to pass USB 2.0 Full-Speed compliance. Place the 15 kΩ pull-up resistor on D+ (for full-speed device detection) close to the MCU. The 28-SOIC wide-body (300-mil) package has generous ground-pour opportunities - stitch vias around the perimeter to improve EMI performance and thermal dissipation, especially for designs running at 48 MHz with USB active.
Thông tin tuân thủ
RoHS compliance per Microchip product page. The LF25J11 family is not AEC-Q100 qualified; for automotive, consider the PIC18F25J11T-I/SO or PIC18FxxK22 automotive variants. Halogen-free status not explicitly stated in the provided data - verify with Microchip if required.
