PIC18LF25K80-I/SP - 8-bit 32KB Flash XLP MCU | Microchip
MPN: PIC18LF25K80-I/SP ✓ Hoạt độngPIC18LF25K80-I/SP Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash/RAM/EEPROM) and peripherals. The PIC18LF25K80 belongs to the 8-bit PIC family, which sits inside the broader hierarchy of microcontrollers -> embedded processors -> semiconductor ICs. The "LF" prefix denotes the low-voltage Flash variant, while "18K80" identifies the specific sub-family with CAN, XLP and ADC12 features.
Key features include 32 KB (16K × 16) self-programmable Flash, 4 KB SRAM, 1 KB EEPROM, 64 MHz internal oscillator, 36 digital I/O, two MSSP (SPI/I2C), two ECAN, one 12-bit ADC up to 8 channels at 100 ksps, three 16-bit timers, four 8-bit timers and a Charge Time Measurement Unit (CTMU) for capacitive touch or precise time measurement. The instruction set is PIC18 with C-optimised architecture and 16-bit instructions for compact code density.
Architecturally the PIC18LF25K80 uses a RISC-style Harvard architecture with 8-bit data path and 16-bit instructions, an integrated 16-level hardware stack, and an enhanced instruction set that includes hardware multiply and direct bit manipulation. The XLP nanoWatt technology provides multiple low-power modes (Run, Idle, Sleep, RTCC) with nanowatt-level standby, and the integrated ECAN module supports CAN 2.0B active at 1 Mbit/s for automotive/industrial networking.
Typical applications include CAN-node sensor interfaces, battery-powered metering, industrial automation nodes, capacitive touch user interfaces, HVAC fan/valve controllers, automotive body ECUs, and medical handheld devices where low standby current extends battery life from months to years. The 1.8 V minimum VDD also makes it suitable for direct operation from single-cell lithium or two AA cells.
When designing with this device, ensure that decoupling (100 nF + 10 µF) is placed within 5 mm of VDD pins, and that MCLR is tied through a 10 kΩ pull-up to VDD to allow reliable in-circuit serial programming (ICSP). For capacitive touch applications, allocate at least two adjacent pins per channel and use the CTMU with a guard ring to improve noise immunity.
This page synthesises distributor stock, parametric alternatives and XLP design guidance not found in the manufacturer datasheet, helping engineers select a drop-in replacement or compare polarity/grade variants quickly.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF25K80-I/SP — 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 PIC18LF25K80-I/SP (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, ADC, MSL Level, Timers.
PIC18F25K80-I/SP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F25K80-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F25K80T-I/SP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF25K80-I/MM
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF46K80-I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F46K80-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF26K80-I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF25K80-I/SP Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18, 8-bit, RISC Harvard |
| Program Memory (Flash) | 32 KB (16K x 16) |
| SRAM | 4 KB |
| EEPROM | 1 KB |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Digital I/O Pins | 36 |
| ADC | 1 x 12-bit, up to 8 channels |
| CAN Module | 1 x ECAN 2.0B active |
| MSSP (SPI/I2C) | 2 |
| Timers | 3 x 16-bit + 4 x 8-bit |
| CTMU | Yes (Charge Time Measurement Unit) |
| Hộp | 28-pin SPDIP (0.300 in / 7.62 mm) |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| XLP Sleep Current | 20 nA typical |
| ICSP / Debug | Yes (2-wire In-Circuit Serial Programming) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF25K80-I/SP
| Chân 1 | MCLR/RE3 — Master Clear (reset) input / digital I/O pin RE3 |
| Chân 2 | RA0/AN0 — Digital I/O RA0 / analog input AN0 |
| Chân 3 | RA1/AN1 — Digital I/O RA1 / analog input AN1 |
| Chân 4 | RA2/AN2 — Digital I/O RA2 / analog input AN2 / VREF- |
| Chân 5 | RA3/AN3 — Digital I/O RA3 / analog input AN3 / VREF+ |
| Chân 6 | RA4/TOCKI — Digital I/O RA4 / Timer0 clock input |
| Chân 7 | RA5/AN4 — Digital I/O RA5 / analog input AN4 / SS1 |
| Chân 8 | VSS — Ground reference |
| Chân 9 | OSC1/CLKIN/RA7 — Crystal oscillator input / external clock in / RA7 |
| Chân 10 | OSC2/CLKOUT/RA6 — Crystal oscillator output / clock out / RA6 |
| Chân 11 | RC0/SOSCO — Digital I/O RC0 / SOSC oscillator output |
| Chân 12 | RC1/SOSCI — Digital I/O RC1 / SOSC oscillator input |
| Chân 13 | RC2/CCP1 — Digital I/O RC2 / Capture/Compare/PWM 1 |
| Chân 14 | RC3/CCP2 — Digital I/O RC3 / Capture/Compare/PWM 2 |
| Chân 15 | RC4/C1OUT — Digital I/O RC4 / comparator 1 output |
| Chân 16 | RC5/C2OUT — Digital I/O RC5 / comparator 2 output |
| Chân 17 | RC6/TX/CK — Digital I/O RC6 / EUSART TX / I2C clock |
| Chân 18 | RC7/RX/DT — Digital I/O RC7 / EUSART RX / I2C data |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Chân 21 | RB0/AN12/INT0 — Digital I/O RB0 / analog AN12 / external interrupt 0 |
| Chân 22 | RB1/AN10/INT1 — Digital I/O RB1 / analog AN10 / external interrupt 1 |
| Chân 23 | RB2/AN8 — Digital I/O RB2 / analog AN8 |
| Chân 24 | RB3/AN9/CCP2 — Digital I/O RB3 / analog AN9 / CCP2 |
| Chân 25 | RB4/AN11/KBI0 — Digital I/O RB4 / analog AN11 / KBI interrupt 0 |
| Chân 26 | RB5/KBI1 — Digital I/O RB5 / KBI interrupt 1 |
| Chân 27 | RB6/KBI2/PGC — Digital I/O RB6 / KBI interrupt 2 / ICSP clock |
| Chân 28 | RB7/KBI3/PGD — Digital I/O RB7 / KBI interrupt 3 / ICSP data |
Ứng dụng tiêu biểu
PIC18LF25K80-I/SP phù hợp cho 6 Áp dụngs: CAN-Node Sensor Interface, Battery-Powered Smart Meter, Capacitive Touch User Interface, Automotive Body ECU, HVAC Fan / Valve Controller, Medical Handheld Device.
CAN-Node Sensor Interface
The PIC18LF25K80-I/SP's integrated ECAN 2.0B controller and 1.8 V minimum VDD make it well suited to low-power CAN sensor nodes on industrial or building-automation buses. The hardware CAN peripheral supports 1 Mbit/s with 8 acceptance filters, eliminating the external MCP2515 + MCP2551 pair that 8-bit MCUs without CAN typically require. Combined with the 12-bit ADC at 100 ksps and 20 nA sleep current, the device can run from 2x AA cells for several years while periodically waking to transmit a CAN frame. Place the device between the bus transceiver and sensor front-end, using the ECAN interrupt to wake from Sleep and the ADC to digitise the sensor. The CTMU can also measure small capacitance changes for proximity-sensing overlays.
Được đề xuất
Battery-Powered Smart Meter
The PIC18LF25K80-I/SP's nanoWatt XLP technology (20 nA typical sleep current, <100 nA RTCC) and 1.8 V minimum VDD make it ideal for battery-powered metering applications such as gas, water or heat meters that must operate for 10+ years on a single primary cell. The integrated LCD segment driver option (per K80 family variants) and 32 KB Flash comfortably fit metering firmware including tamper detection and rolling-log storage in 4 KB RAM + 1 KB EEPROM. Use Sleep + RTCC for the meter's idle state, wake on a button or Hall-sensor interrupt, then run the ADC and ECAN to report. Power dissipation in Sleep is dominated by leakage; estimated battery life at 1 wake/minute exceeds 10 years with a 2.4 Ah LiSOCl2 cell.
Được đề xuất
Capacitive Touch User Interface
The PIC18LF25K80-I/SP integrates a CTMU (Charge Time Measurement Unit) that, paired with the 12-bit ADC, enables reliable capacitive touch sensing on up to 16 keys without an external touch IC. The CTMU produces a precise constant-current source charge that the ADC measures as a discharge-time delta, yielding sub-pF resolution suitable for proximity-sensing overlays, slider strips and rotary encoders through thin glass or plastic. Use the CTMU wake-on-touch feature with a guard ring to suppress moisture false-triggers, and put the MCU in nanoWatt Sleep between touches. The 32 KB Flash and 4 KB RAM are sufficient for mTouch firmware libraries and button-remap logic.
Được đề xuất
Automotive Body ECU
The PIC18LF25K80-I/SP's hardware ECAN, wide -40 C to +125 C extended-grade variants in the K80 family, and 32 KB Flash make it a low-cost node controller for non-safety automotive body functions such as seat controllers, mirror modules, lighting clusters and climate-zone actuators. The ECAN bus supports body-CAN at 500 kbit/s, and the 12-bit ADC handles potentiometer and thermistor inputs. Note: the -I/SP industrial-grade part (-40 C to +85 C) is rated only for non-automotive deployment; the -E/SP extended or automotive AEC-Q100 qualified PIC18F25K80-I/SP-Q variants are required for under-hood use. The CTMU also enables touch-button door handles in the same family.
Được đề xuất
HVAC Fan / Valve Controller
The PIC18LF25K80-I/SP's 36 digital I/O and PWM outputs make it well matched to small HVAC controllers that drive 3-speed fans, thermostatic radiator valves (TRVs) and zone dampers in 24 V building-automation systems. The ADC reads NTC thermistor pipes; the ECAN or MSSP (I2C) links to a central BMS controller; the timers drive zero-cross TRIAC commutation at 50/60 Hz. Operating at 3.3 V from a switching buck converter, the device draws ~5 mA active, and the XLP Sleep mode (<1 µA) extends battery life on wireless TRV variants. The 1 KB EEPROM stores commissioning parameters and seasonal setpoints.
Được đề xuất
Medical Handheld Device
The PIC18LF25K80-I/SP's 1.8 V minimum VDD, sub-µA Sleep current, and IEC 60730 Class B software-support library from Microchip make it suitable for low-cost medical handhelds such as pulse-oximeter probes, peak-flow meters, and single-use diagnostic cartridges. The 12-bit ADC and CTMU enable optical or impedance sensor readouts, while the ECAN/UART links to a host display. The 32 KB Flash is sufficient for IEC 60730 self-test routines, and the XLP modes let the device idle for years on a coin battery, waking only on a button press. Note: full IEC 60601 medical certification is system-level; the PIC18LF25K80-I/SP is rated for industrial temperature only.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF25K80-I/SP — 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 | PIC18F25K80-I/SP | PIC18F25K80-I/SS | PIC18F25K80T-I/SP | PIC18LF25K80-I/MM | PIC18LF46K80-I/P | PIC18F46K80-I/P | PIC18LF26K80-I/SP |
|---|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP (0.300 in) | 28-SPDIP - same | 28-SSOP | 28-SPDIP - same | 28-QFN (6x6 mm) | 40-PDIP | 40-PDIP | 28-SPDIP - same |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 64 KB | 64 KB | 64 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Supply Voltage (VDD) | 1.8 V to 3.6 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.0 V to 5.5 V | 1.8 V to 3.6 V |
| Maximum CPU Speed | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) |
| ECAN Module | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) |
| ADC | 12-bit, 8-ch | 12-bit, 8-ch | 12-bit, 8-ch | 12-bit, 8-ch | 12-bit, 8-ch | 12-bit, 11-ch | 12-bit, 11-ch | 12-bit, 8-ch |
Bảo phân biệt quan trọng
- Lowest minimum VDD in PIC18 K80 family (vsPIC18F25K80-I/SP)
- Drop-in SPDIP-28 footprint for breadboard prototypes (vsPIC18LF25K80-I/MM)
- ECAN at low throughput (vsPIC18LF25K80-I/MM)
Ghi chú thiết kế
The PIC18LF25K80-I/SP achieves <1 µA Sleep current only when peripherals are disabled in the PMD register and the ADC, comparators and CVREF are turned off. Estimated: with RTCC enabled at 32 kHz, Sleep current rises to ~1.1 µA; with CTMU on it rises to ~3 µA. For 10-year battery life, budget <500 nA average with 2.4 Ah LiSOCl2.
Place a 100 nF decoupling capacitor within 5 mm of each VDD pin and a bulk 10 µF ceramic near the IC. For through-hole SPDIP-28 prototypes, add a ground plane on the bottom layer and keep high-speed ECAN traces (CANTX/CANRX) under 25 mm or use a twisted pair to the transceiver. Estimated loop inductance for a 28-pin DIP ground lead is ~10 nH, which can couple ADC noise without proper decoupling.
Do not leave MCLR floating - tie it through a 10 kΩ pull-up to VDD, or in-circuit serial programming (ICSP) will be unreliable. The LF variant's 1.8 V brown-out reset must be enabled (BOREN=1, BORV=1) to prevent Flash corruption below the 1.8 V minimum VDD. The ICSP pins (RB6/PGC, RB7/PGD) are not 5 V tolerant on the LF variant - do not drive them from a 5 V programmer.
Route the ECAN CANTX and CANRX differential pair to the transceiver with 100 Ω differential impedance and keep them away from switching nodes. The MCU's CTMU current source is sensitive to digital switching noise on adjacent pins - place CTMU-capable pins (RBx) physically isolated from PWM and SPI outputs. A guard ring tied to a quiet analog ground around CTMU touch electrodes reduces false wake-ups in moist environments.
Thông tin tuân thủ
Industrial temperature grade -40 C to +85 C only. Not AEC-Q100 qualified; choose PIC18F25K80-I/SP-Q or -E/SP variants for automotive.
