PIC18LF25K80T-I/SS - 8-bit XLP MCU, 32KB Flash, ECAN, SSOP-28 | Microchip
MPN： PIC18LF25K80T-I/SS ✓ 啟用中PIC18LF25K80T-I/SS 概覽
A PIC18 microcontroller is a member of Microchip's 8-bit Harvard-architecture RISC MCU family, which sits at the entry level of the broader microcontroller taxonomy (8-bit MCU -> microcontroller -> embedded controller -> semiconductor). The PIC18 core executes one instruction every four clock cycles and supports linear memory addressing up to 2MB, which made it a workhorse for cost-sensitive CAN-connected and low-power embedded systems in the 2010s. The "K80" sub-family specifically targets ECAN-based node designs and battery-powered metering where the nanoWatt XLP sleep modes drop quiescent current to single-digit microamps.
Key features that differentiate the PIC18LF25K80T-I/SS include 24 general-purpose I/O pins, hardware ECAN 2.0B with masking and time-stamping, three 16-bit timers plus three 8-bit timers, a 12-channel 12-bit ADC with acquisition timer, dual analog comparators, and a 5-bit DAC reference. The I-grade part is rated for industrial temperature operation (-40C to +85C), and the SSOP-28 footprint measures 5.30 mm body width with 0.65 mm pitch for compact PCB layouts. Tape-and-reel ("T") packaging supports high-volume SMT assembly.
Typical applications include HVAC building-control nodes, elevator-control panels, industrial sensor nodes with CAN backbone, automotive body and cluster modules (within the industrial-grade qualification limits), and battery-backed metering or telemetry endpoints. For designs that later require 5V tolerance, the pin-compatible PIC18F25K80 family member offers an identical footprint at higher VIN, enabling upward migration without PCB rework.
When designing with the PIC18LF25K80T-I/SS, keep in mind the 1.8V to 3.6V supply constraint; migrating to the PIC18F25K80 family is required for any 5V rail. Place the 1 uF VDD decoupling capacitor within 5 mm of the supply pin and follow Microchip's ECAN bus-layout guidelines for 1 Mbps operation.
直接替換替代品，適用於 PIC18LF25K80T-I/SS — 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： PIC18LF25K80T-I/SS （相同外形與佔位） — 差異在於 Package, ADC, CAN Module, Communication Peripherals, Operating Temperature.
PIC18F25K80T-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF25K80-I/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC18F25K80-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF25K80T-I/SS 最大額定值與電氣特性
| Core Architecture | 8-bit PIC18 RISC |
| Program Memory (Flash) | 32 KB (16K x 16 words) |
| Data RAM | 3.6 KB |
| Data EEPROM | 1 KB |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| 工作溫度 | -40 C to +85 C (Industrial) |
| I/O Pins | 24 |
| ADC | 12-bit, up to 12 channels |
| CAN Module | ECAN 2.0B active |
| Communication Peripherals | 2x EUSART, SPI, I2C |
| Timers | 3x 16-bit + 3x 8-bit |
| 封裝 | SSOP-28 (5.30 mm body, 0.209 inch) |
| 安裝類型 | Surface Mount |
| Low-Power Technology | nanoWatt XLP |
| RoHS 狀態 | Compliant |
| CTMU | Charge Time Measurement Unit present |
PIC18LF25K80T-I/SS 腳位配置
| 腳位 1 | MCLR/VPP/RE3 — Master clear reset input / programming voltage / digital input-only pin |
| 腳位 2 | RA0/CVref/AN0 — PORTA bit 0 / comparator voltage reference output / analog input 0 |
| 腳位 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| 腳位 4 | RA2/AN2/Vref- — PORTA bit 2 / analog input 2 / ADC negative reference |
| 腳位 5 | RA3/AN3/Vref+ — PORTA bit 3 / analog input 3 / ADC positive reference |
| 腳位 6 | RA4/T0CKI/C1OUT — PORTA bit 4 / Timer0 clock input / comparator 1 output |
| 腳位 7 | RA5/AN4/C2OUT — PORTA bit 5 / analog input 4 / comparator 2 output |
| 腳位 8 | VSS — Ground reference |
| 腳位 9 | RA7/OSC1/CLKIN — PORTA bit 7 / oscillator input / external clock input |
| 腳位 10 | RA6/OSC2/CLKOUT — PORTA bit 6 / oscillator output / clock output |
| 腳位 11 | RC0/SOSCO/SCLKI — PORTC bit 0 / secondary oscillator output / digital clock input |
| 腳位 12 | RC1/SOSCI — PORTC bit 1 / secondary oscillator input |
| 腳位 13 | RC2/CCP1 — PORTC bit 2 / capture/compare/PWM 1 |
| 腳位 14 | RC3/REFO/SCL — PORTC bit 3 / reference output / I2C clock |
| 腳位 15 | RC4/SDA — PORTC bit 4 / I2C data |
| 腳位 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| 腳位 17 | RC6/SDI/TX/CK — PORTC bit 6 / SPI data in / EUSART TX / EUSART clock |
| 腳位 18 | RC7/SDO/RX/DT — PORTC bit 7 / SPI data out / EUSART RX / EUSART data |
| 腳位 19 | VSS — Ground reference |
| 腳位 20 | VDD — Positive supply voltage |
| 腳位 21 | RB0/AN12/INT0 — PORTB bit 0 / analog input 12 / external interrupt 0 |
| 腳位 22 | RB1/AN10/C1INC — PORTB bit 1 / analog input 10 / comparator 1 inverting input |
| 腳位 23 | RB2/AN8/C2INC — PORTB bit 2 / analog input 8 / comparator 2 inverting input |
| 腳位 24 | RB3/AN9/C3INC — PORTB bit 3 / analog input 9 / comparator 3 inverting input |
| 腳位 25 | RB4/AN11/C3OUT — PORTB bit 4 / analog input 11 / comparator 3 output |
| 腳位 26 | RB5/C1OUT — PORTB bit 5 / comparator 1 output |
| 腳位 27 | RB6/PGC — PORTB bit 6 / In-Circuit Debugger clock |
| 腳位 28 | RB7/PGD — PORTB bit 7 / In-Circuit Debugger data |
典型應用
PIC18LF25K80T-I/SS 適用於 7 應用s: HVAC Building-Control Node, Elevator-Control Panel Subsystem, Industrial CAN Sensor Node, Battery-Backed Telemetry Endpoint, Automotive Body Control Module (Industrial Grade), Capacitive Touch User Interface, Portable Data-Acquisition Module.
HVAC Building-Control Node
The PIC18LF25K80T-I/SS fits HVAC building-control nodes because the integrated ECAN 2.0B controller talks natively to BACnet or CAN-based building-automation backbones, eliminating an external CAN controller. Its nanoWatt XLP sleep modes drop quiescent current to single-digit microamps, so a coin-cell or two-AA backed node can run for years. The 32 KB Flash and 3.6 KB RAM comfortably host a Zigbee-to-CAN bridge or a sensor-fusion task scheduler, while the 1.8 V to 3.6 V VDD range matches 3.3 V HVAC bus power. The industrial -40C to +85C temperature grade covers unconditioned mechanical rooms.
推薦
Elevator-Control Panel Subsystem
The PIC18LF25K80T-I/SS is well matched to elevator-control panel subsystems where 1.8 V to 3.6 V operation, ECAN connectivity, and a robust 8-bit core are required. The 12-bit ADC with up to 12 channels reads floor-position potentiometers, current sensors, and door-state switches with sufficient resolution for simple control loops. The CTMU enables capacitive touch sensing for elevator call buttons without an external touch IC. Pair the MCU with an MCP2561 CAN transceiver and an external watchdog supervisor to meet elevator-safety redundancy expectations. The SSOP-28 footprint is small enough for the confined panel backplane but large enough to allow hand rework during prototyping.
推薦
Industrial CAN Sensor Node
The PIC18LF25K80T-I/SS is a strong choice for industrial CAN sensor nodes because the on-chip ECAN module and 3.6 KB RAM comfortably host a CANOpen or DeviceNet slave stack. The 24 GPIO pins support multiple analog and digital sensors, while the seven timers handle PWM-driven actuators and frequency measurements without offloading to external counters. With nanoWatt XLP, the node can sleep below 1 uA between transmissions, extending battery life in remote installations. The 1.8 V minimum supply allows operation from a single lithium primary cell near end-of-life. Designers should follow Microchip's AN228 application note for CAN bus physical-layer layout.
推薦
Battery-Backed Telemetry Endpoint
The PIC18LF25K80T-I/SS suits battery-backed telemetry endpoints because the nanoWatt XLP modes drop core consumption to sub-uA levels during sleep windows, waking via RTCC or external interrupt. The 64 MHz core executes EUSART or SPI modem handshakes in milliseconds before returning to deep sleep, so average draw stays well below 50 uA on a 3.6 V lithium pack. The 32 KB Flash supports over-the-air bootloader designs with dual-image partitioning, and 3.6 KB RAM is enough for frame buffering. The 1.8 V minimum supply extends usable battery life to the very end of the discharge curve. Use Microchip's AN879 application note for low-power design patterns.
推薦
Automotive Body Control Module (Industrial Grade)
Within industrial-grade temperature limits (-40C to +85C), the PIC18LF25K80T-I/SS can be used in non-safety automotive body-control applications such as interior lighting controllers or seat-position memories. The ECAN module interfaces with the vehicle CAN bus, the 12-bit ADC reads potentiometer-based position sensors, and the CTMU supports capacitive touch on interior switches. For under-hood or safety-critical applications, however, the AEC-Q100 qualified PIC18F25K80-E/SS variant should be selected instead. Pair the MCU with an MCP2562 high-speed CAN transceiver for 1 Mbps bus operation.
推薦
Capacitive Touch User Interface
The PIC18LF25K80T-I/SS is a cost-effective host for capacitive touch user interfaces because the on-chip CTMU (Charge Time Measurement Unit) measures sub-pF capacitance deltas without an external touch controller. The 24 GPIO pins support 12+ touch channels with the mTouch sensing middleware, and the 32 KB Flash stores the touch-scan state machine plus any required capacitive-to-CAN bridging logic. The industrial -40C to +85C range covers indoor appliance and HMI deployments. Designers can reference Microchip's AN1250 application note for CTMU-based touch layout and PCB guidelines.
推薦
Portable Data-Acquisition Module
The PIC18LF25K80T-I/SS can serve as the controller in portable data-acquisition modules, where its 12-bit ADC, 3.6 KB RAM, and ECAN or EUSART channels deliver enough analog and bus bandwidth for multi-channel logging. The 1.8 V minimum supply allows operation from a single 18650 lithium cell down to near end-of-life, and the nanoWatt XLP sleep currents keep idle draw negligible. The SSOP-28 package fits inside a handheld enclosure, and the I-grade temperature rating tolerates outdoor field use. Engineers can store samples in the 3.6 KB RAM buffer and flush to external SPI flash in batches.
推薦
推薦產品摘要
工程參考資料，適用於 PIC18LF25K80T-I/SS — 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 | PIC18F25K80T-I/SS | PIC18LF25K80-I/SS | PIC18F25K80-I/SS | PIC18LF25K80T-I/MM |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-28 | SSOP-28 - same | SSOP-28 - same | SSOP-28 - same | QFN-28 - different |
| Supply Voltage (VDD) | 1.8 V to 3.6 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V |
| Program Flash | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Data RAM | 3.6 KB | 3.6 KB | 3.6 KB | 3.6 KB | 3.6 KB |
| Data EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| ECAN Module | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) |
| CPU Speed | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Tape & Reel | Yes ("T" suffix) | Yes | No (tube) | No (tube) | Yes |
主要差異化特點
- Low-voltage LF (1.8 V to 3.6 V) operation (對比PIC18F25K80T-I/SS)
- Integrated ECAN 2.0B controller (對比PIC18LF25K50-I/SS)
- Industrial temperature grade with 32 KB Flash in SSOP-28 (對比PIC18F25K80T-E/SS (extended grade))
設計說明
Place a single 1 uF X7R ceramic decoupling capacitor within 5 mm of the VDD pin (pin 20) and a 100 nF X7R within 2 mm of the same pin. The PIC18LF25K80T-I/SS nanoWatt XLP sleep currents can drop below 100 nA with the RTCC enabled, so any leakage path on the VDD rail dominates the sleep budget - use a low-leakage LDO such as the MCP1700 and avoid pull-ups that remain powered in standby. Estimated: at 3.6 V VDD with 1 uA quiescent load, a 1 Ah primary cell sustains the MCU for roughly 114 years in deep sleep, but practical PCB leakage and external sensors reduce this to months.
Route the ICSP pins RB6/PGC (pin 27) and RB7/PGD (pin 28) so that an ICD header can be attached without crossing other signal traces. The MCLR/VPP/RE3 pin (pin 1) requires a 10 kOhm pull-up to VDD and a 100 nF cap to ground for in-circuit serial programming; route this node first. The 28-pin SSOP has a 0.65 mm pitch and a 5.30 mm body width, so leave at least 1 mm of clearance around the part to allow hand-rework.
Do not migrate designs between the LF (1.8 V to 3.6 V) and F (1.8 V to 5.5 V) prefixes without checking downstream 3.3 V peripherals - applying 5 V on the LF rail will damage the part. The ECAN module requires bus termination of 120 ohms at each end of the CAN bus per ISO 11898; failure to terminate causes bit errors above 125 kbps. The CTMU calibration constant TRIMSEL must be measured per part per temperature for accurate capacitive touch readings.
When using the internal 64 MHz HFINTOSC, route sensitive analog signals (ADC inputs, comparator inputs) away from the OSC2 pin to reduce digital-to-analog crosstalk. For CAN bus operation above 500 kbps, follow Microchip application note AN228 for split termination and ground-plane stitching under the bus traces. Estimated: a 1 Mbps CAN bus needs at least 4-layer PCB with continuous ground plane under the bus to stay within the 2.5 ns signal skew budget.
合規資訊
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC18F25K80-E/SS for AEC-Q100 automotive applications.
