PIC18LF25K80-I/SP - 8-bit 32KB Flash XLP MCU | Microchip
MPN: PIC18LF25K80-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.46 | $4.46 |
| 10 | $3.95 | $39.50 |
| 100 | $3.41 | $341.00 |
| 500 | $2.84 | $1,420.00 |
| 1,000 | $2.36 | $2,360.00 |
PIC18LF25K80-I/SP Overview
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.
Drop-in alternatives for PIC18LF25K80-I/SP — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC18LF25K80-I/SP (same form factor and footprint) — differing in Package, Operating Temperature, ADC, MSL Level, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F25K80-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F25K80-I/SS
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC18F25K80T-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF25K80-I/MM
✅ Drop-In✓ In Stock
$4.05 / Unit
View Datasheet →PIC18LF46K80-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F46K80-I/P
✅ Drop-In✓ In Stock
$4.78 / Unit
View Datasheet →PIC18LF26K80-I/SP
✅ Drop-In✓ In Stock
$2.65 / Unit
View Datasheet →PIC18LF25K80-I/SP Maximum Ratings & Electrical Characteristics
| 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) |
| Package | 28-pin SPDIP (0.300 in / 7.62 mm) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| XLP Sleep Current | 20 nA typical |
| ICSP / Debug | Yes (2-wire In-Circuit Serial Programming) |
| RoHS Status | Compliant |
PIC18LF25K80-I/SP Pin Configuration
| Pin 1 | MCLR/RE3 — Master Clear (reset) input / digital I/O pin RE3 |
| Pin 2 | RA0/AN0 — Digital I/O RA0 / analog input AN0 |
| Pin 3 | RA1/AN1 — Digital I/O RA1 / analog input AN1 |
| Pin 4 | RA2/AN2 — Digital I/O RA2 / analog input AN2 / VREF- |
| Pin 5 | RA3/AN3 — Digital I/O RA3 / analog input AN3 / VREF+ |
| Pin 6 | RA4/TOCKI — Digital I/O RA4 / Timer0 clock input |
| Pin 7 | RA5/AN4 — Digital I/O RA5 / analog input AN4 / SS1 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKIN/RA7 — Crystal oscillator input / external clock in / RA7 |
| Pin 10 | OSC2/CLKOUT/RA6 — Crystal oscillator output / clock out / RA6 |
| Pin 11 | RC0/SOSCO — Digital I/O RC0 / SOSC oscillator output |
| Pin 12 | RC1/SOSCI — Digital I/O RC1 / SOSC oscillator input |
| Pin 13 | RC2/CCP1 — Digital I/O RC2 / Capture/Compare/PWM 1 |
| Pin 14 | RC3/CCP2 — Digital I/O RC3 / Capture/Compare/PWM 2 |
| Pin 15 | RC4/C1OUT — Digital I/O RC4 / comparator 1 output |
| Pin 16 | RC5/C2OUT — Digital I/O RC5 / comparator 2 output |
| Pin 17 | RC6/TX/CK — Digital I/O RC6 / EUSART TX / I2C clock |
| Pin 18 | RC7/RX/DT — Digital I/O RC7 / EUSART RX / I2C data |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Pin 21 | RB0/AN12/INT0 — Digital I/O RB0 / analog AN12 / external interrupt 0 |
| Pin 22 | RB1/AN10/INT1 — Digital I/O RB1 / analog AN10 / external interrupt 1 |
| Pin 23 | RB2/AN8 — Digital I/O RB2 / analog AN8 |
| Pin 24 | RB3/AN9/CCP2 — Digital I/O RB3 / analog AN9 / CCP2 |
| Pin 25 | RB4/AN11/KBI0 — Digital I/O RB4 / analog AN11 / KBI interrupt 0 |
| Pin 26 | RB5/KBI1 — Digital I/O RB5 / KBI interrupt 1 |
| Pin 27 | RB6/KBI2/PGC — Digital I/O RB6 / KBI interrupt 2 / ICSP clock |
| Pin 28 | RB7/KBI3/PGD — Digital I/O RB7 / KBI interrupt 3 / ICSP data |
Typical Applications
PIC18LF25K80-I/SP is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF25K80-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
Key Differentiators
- Lowest minimum VDD in PIC18 K80 family (vs PIC18F25K80-I/SP)
- Drop-in SPDIP-28 footprint for breadboard prototypes (vs PIC18LF25K80-I/MM)
- ECAN at low throughput (vs PIC18LF25K80-I/MM)
Design Notes
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.
Compliance Information
Industrial temperature grade -40 C to +85 C only. Not AEC-Q100 qualified; choose PIC18F25K80-I/SP-Q or -E/SP variants for automotive.
