PIC18LF2580-I/SP - 8-Bit 40MHz MCU 32KB Flash 28-SPDIP | Microchip
MPN: PIC18LF2580-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.95 | $7.95 |
| 10 | $7.1 | $71.00 |
| 100 | $6.05 | $605.00 |
| 500 | $5.45 | $2,725.00 |
| 1,000 | $4.95 | $4,950.00 |
PIC18LF2580-I/SP Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/Flash), data memory (RAM), peripherals, and I/O on one die. The PIC18 family represents the highest-performance 8-bit tier of Microchip's PIC architecture, featuring a 16-bit instruction word with an 8-bit data path, a hardware multiplier, and a C compiler-friendly orthogonal instruction set. Microcontrollers sit within the broader embedded-system hierarchy: MCU -> microprocessor-based device -> embedded computing platform -> electronic system.
Key features include a maximum CPU clock of 40 MHz (10 MIPS instruction throughput), an operating voltage range of 2.0 V to 5.5 V (LF variant - the F variant runs 4.2 V to 5.5 V), 25 general-purpose digital I/O pins, 8 channels of 10-bit ADC, two 8-bit and three 16-bit timers, two capture/compare/PWM modules, and a hardware CAN 2.0B controller (ECAN). Communications peripherals include one USART with LIN support, one MSSP that operates as either I2C (Master/Slave) or SPI (Master/Slave), making this part especially attractive for networked industrial and automotive applications.
The PIC18LF2580 architecture uses a Harvard-style bus with separate program and data memory paths, an internal 31 kHz to 8 MHz RC oscillator (with PLL), and nanoWatt XLP-style power management. The integrated ECAN module is a major differentiator: most 8-bit MCUs lack hardware CAN, forcing designers to bit-bang external controllers. The device is rated for industrial temperature operation from -40C to +85C and supports in-circuit serial programming (ICSP) plus in-circuit debugger (ICD) interfaces.
Typical applications include automotive body and chassis nodes (using the CAN interface), industrial CANopen and DeviceNet slave devices, building-automation sensor nodes, HVAC controllers, and small appliances that require reliable on-chip CAN without an external transceiver-controlled MCU. The -I/SP part suffix indicates industrial temperature range and SPDIP package.
When designing with this part, plan a clean CAN bus topology with proper termination (120 ohm at each end) and a TJA1050 or MCP2551 transceiver between the MCU's CANTX/CANRX pins and the bus. Reserve ICPGC/ICPGD/ICPMCLR pins for ICSP/ICD and add a 10 kohm pull-up on MCLR to allow reliable reset behavior; configure the CONFIG words in code before any other operation.
This page synthesizes distributor pricing, same-family drop-in alternatives, ECAN design considerations, and practical layout guidance not found in the standalone datasheet.
Drop-in alternatives for PIC18LF2580-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 PIC18LF2580-I/SP (same form factor and footprint) — differing in Package, Timers, MSL Level, Program Memory, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F2580-I/SP
✅ Drop-In✓ In Stock
$4.55 / Unit
View Datasheet →PIC18LF2580-I/SO
✅ Drop-In✓ In Stock
$3.56 / Unit
View Datasheet →PIC18LF2580-I/ML
✅ Drop-In✓ In Stock
$4.72 / Unit
View Datasheet →PIC18F2480-I/SP
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →PIC18LF2480-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF2580-I/SP Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit RISC, 16-bit instruction word) |
| Family | PIC18F2580 / PIC18LF2580 |
| Program Memory (Flash) | 32 KB (16K x 16 words) |
| Data SRAM | 1536 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Clock | 40 MHz |
| Instruction Throughput | 10 MIPS |
| Supply Voltage (LF) | 2.0 V to 5.5 V |
| I/O Pins | 25 (digital, bidirectional) |
| ADC | 8-channel, 10-bit |
| Timers | 2 x 8-bit + 3 x 16-bit |
| CCP Modules | 2 (Capture/Compare/PWM) |
| CAN Controller | ECAN 2.0B (hardware) |
| UART | 1 x EUSART (LIN-capable) |
| SPI / I2C | 1 x MSSP (SPI or I2C Master/Slave) |
| Operating Temperature | -40C to +85C (industrial) |
| Package | 28-SPDIP (Skinny Plastic DIP, through-hole) |
| Programming / Debug | ICSP + ICD (2-wire) |
| RoHS Status | Compliant |
PIC18LF2580-I/SP Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, internal pull-up enabled by configuration |
| Pin 2 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Pin 3 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Pin 4 | RA2/AN2/VREF- — Digital I/O / Analog input / ADC negative reference |
| Pin 5 | RA3/AN3/VREF+ — Digital I/O / Analog input / ADC positive reference |
| Pin 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — Digital I/O / Analog / SPI slave select |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI — Oscillator crystal input or external clock input |
| Pin 10 | OSC2/CLKO — Oscillator crystal output or clock output |
| Pin 11 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output or clock input |
| Pin 12 | RC1/T1OSI — Digital I/O / Timer1 oscillator input |
| Pin 13 | RC2/CCP1 — Digital I/O / Capture-Compare-PWM 1 |
| Pin 14 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| Pin 15 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| Pin 16 | RC5/SDO — Digital I/O / SPI data out |
| Pin 17 | RC6/CANTX — Digital I/O / ECAN transmit output |
| Pin 18 | RC7/CANRX — Digital I/O / ECAN receive input |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage (2.0V to 5.5V) |
| Pin 21 | RB0/INT0 — Digital I/O / External interrupt 0 |
| Pin 22 | RB1/INT1 — Digital I/O / External interrupt 1 |
| Pin 23 | RB2/INT2 — Digital I/O / External interrupt 2 |
| Pin 24 | RB3/CCP2 — Digital I/O / Capture-Compare-PWM 2 |
| Pin 25 | RB4 — Digital I/O / interrupt-on-change |
| Pin 26 | RB5/PGM — Digital I/O / LVP programming |
| Pin 27 | RB6/PGC — Digital I/O / ICSP clock (also ICD clock) |
| Pin 28 | RB7/PGD — Digital I/O / ICSP data (also ICD data) |
Typical Applications
PIC18LF2580-I/SP is suitable for 7 applications: Industrial CANopen Slave Node, Automotive Body Control Module (BCM) Node, Building Automation Sensor Node, HVAC Variable-Speed Fan Controller, Small Appliance Motor Control, Medical Device Sensor Interface, Programmable Logic Controller (PLC) Analog Input Card.
Industrial CANopen Slave Node
The PIC18LF2580-I/SP fits CANopen slave nodes because its integrated ECAN 2.0B controller handles CAN framing and acceptance filtering in hardware, freeing CPU cycles for the CANopen stack. With 32 KB flash it accommodates simple slave stacks (CiA 401, 402, 404), and 1536 bytes of SRAM is sufficient for a few PDOs. The LF supply range (2.0-5.5V) supports 3.3V industrial backplanes. Place an MCP2551 or TJA1050 transceiver on CANTX/RC6 and CANRX/RC7, terminate the bus with 120 ohm at each end, and use ICSP for field firmware updates.
Recommended
Automotive Body Control Module (BCM) Node
For body and chassis nodes that speak CAN, the PIC18LF2580-I/SP offers integrated ECAN plus LIN-capable EUSART for sub-network bridges, in a through-hole 28-SPDIP that simplifies prototyping and rework on the production line. The 10 MIPS CPU runs a small J1939 or proprietary CAN stack alongside body-control logic (lighting, locks, mirrors). The 8-channel 10-bit ADC reads sensor inputs, while two CCP modules drive PWM outputs for motor or LED control. For underhood use requiring -40C to +125C, an automotive Q-graded part is recommended instead.
Recommended
Building Automation Sensor Node
In BACnet MS/TP or proprietary RS-485 building-automation sensors, the PIC18LF2580-I/SP runs the application logic and uses the MSSP in SPI mode to talk to a digital temperature or air-quality sensor. The EUSART provides a UART link to a half-duplex RS-485 transceiver (e.g., MAX485 or LTC485), while the ECAN module is held in reserve or routed to a second wired backbone. The 32 KB flash easily fits the BACnet MS/TP stack plus custom logic, and the 2.0 V minimum supply allows operation from two AA cells via a boost regulator.
Recommended
HVAC Variable-Speed Fan Controller
Closed-loop fan and blower control benefits from the PIC18LF2580-I/SP's hardware PWM (2 CCP modules), 10-bit ADC for tachometer feedback, and ECAN for network-controlled setpoints in modern HVAC systems. The 40 MHz / 10 MIPS CPU runs an FOC-lite algorithm or simple PID at comfortable rate, while the integrated CAN interface lets the unit receive target RPM commands from a central controller. The 2.0 V minimum supply lets it boot from a small backup supercapacitor during brownouts.
Recommended
Small Appliance Motor Control
Small appliances such as washing machines, dishwashers, and refrigerators often need a low-cost MCU with CAN, ADC, and PWM. The PIC18LF2580-I/SP delivers all three in a DIP package, which reduces hand-solder and rework cost in low-volume appliances. The ECAN module connects to the appliance's internal backbone, while the CCP/PWM channels drive motors, solenoids, or heater elements via MOSFET drivers. The PIC18LF2580's 32 KB flash accommodates IEC 60730 class B self-test routines for white-goods safety compliance.
Recommended
Medical Device Sensor Interface
Non-invasive medical devices such as digital thermometers, pulse oximeter front-ends, or infusion-pump sensors can use the PIC18LF2580-I/SP as a sensor-interface and CAN gateway. The MSSP in SPI or I2C mode connects to ADC front-ends or optical sensors, the 10-bit internal ADC reads potentiometers or backup analog signals, and the ECAN controller forwards processed data to a central patient-monitor bus. Reliability matters here, so designers typically enable the PIC18 watchdog timer, configure code protection, and validate against IEC 60601 EMI/EMC limits.
Recommended
Programmable Logic Controller (PLC) Analog Input Card
Each analog input card on a small PLC rack can be built around a PIC18LF2580-I/SP that scans its 8 ADC channels, performs scaling, and reports values to a central controller via ECAN. The 32 KB flash runs the card's calibration tables, linearization for thermocouples or RTDs, and fault-detection routines; the 1536-byte SRAM buffers raw samples and CAN frames. The 28-SPDIP package is convenient for backplane prototyping where the card is expected to be replaced periodically. The ICSP interface allows in-rack firmware updates via header.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF2580-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F2580-I/SP | PIC18LF2580-I/SO | PIC18LF2580-I/ML | PIC18F2480-I/SP | PIC18LF2480-I/SP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP | 28-SPDIP - same | 28-SOIC - same pin count, different footprint | 28-QFN - same pin count, different footprint | 28-SPDIP - same | 28-SPDIP - same |
| Program Flash | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB (-50%) | 16 KB (-50%) |
| Data SRAM | 1536 bytes | 1536 bytes | 1536 bytes | 1536 bytes | 768 bytes (-50%) | 768 bytes (-50%) |
| Supply Voltage | 2.0 V to 5.5 V (LF) | 4.2 V to 5.5 V (F) | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) | 4.2 V to 5.5 V (F) | 2.0 V to 5.5 V (LF) |
| Maximum CPU Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| ECAN Controller | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) | Yes (ECAN 2.0B) |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
Key Differentiators
- Integrated hardware ECAN 2.0B controller on a 28-pin 8-bit MCU in DIP (vs PIC18F2480-I/SP)
- Wide 2.0 V to 5.5 V supply range (vs PIC18F2580-I/SP)
- Through-hole 28-SPDIP package option for prototyping and rework (vs PIC18LF2580-I/ML (QFN-28))
Design Notes
Reserve PGC (RB6) and PGD (RB7) for ICSP/ICD. Adding series resistors, LEDs, or large caps on these pins can prevent programming or debugging. MCLR (pin 1) needs a 10-47 kohm pull-up to VDD; do not leave it floating, and ensure the decoupling cap on VDD is within 1 cm of the pin. Configure CONFIG bits in code before any I/O operation - including disabling the watchdog unless used.
Place a 100 nF decoupling capacitor on VDD (pin 20) within 1 cm, with a short, direct ground return. Place the ECAN transceiver (MCP2551 or TJA1050) next to CANTX (RC6) and CANRX (RC7). Bus-side traces should be 120 ohm characteristic impedance and routed as a differential pair; do not use stubs longer than ~3 cm and place 120 ohm termination at each end of the bus. Estimated: 40 MHz operation with current-mode CAN produces sharp edge rates, so a shielded twisted pair is recommended in noisy industrial environments.
The 'LF' and 'F' variants share the same pinout but have different supply ranges. Do not drop a PIC18F2580-I/SP into a board designed for 3.3 V - the F oscillator will fail to start reliably below 4.2 V. Conversely, the LF can be used in 5 V designs without issue. CONFIRM your BOM carries the LF suffix if your design runs at 3.3 V. Estimated: ~10% of PIC18F2580 swap-in failures are caused by supply range confusion, not silicon defects.
The ECAN controller requires the ECAN module to be initialized (CANTX as output, CANRX as input) before the CAN bus is connected externally, otherwise floating CANRX may cause phantom interrupt events. Per Microchip datasheet, run the CAN bit-rate configuration with the BRP, PRSEG, PHSEG1, PHSEG2, and SJW values calculated for the target baud rate; for 1 Mbit/s at 40 MHz FOSC, a common configuration is BRP=1, PRSEG=5 TQ, PHSEG1=3 TQ, PHSEG2=3 TQ, SJW=1 TQ. Sample point lands near 75%.
The PIC18LF2580's internal RC oscillator draws less than 1 mA at 4 MHz but rises to ~15 mA at 40 MHz in execution mode. For battery or energy-harvesting nodes, switch to the 31 kHz internal oscillator (LP mode) and only wake the CPU on ECAN message arrival. Estimated: deep-sleep with ECAN wake-up typically draws <2 uA, ideal for industrial sensor nodes that report periodically.
Compliance Information
RoHS and REACH compliance per Microchip product page. Standard -I/SP grade is industrial temperature (-40C to +85C) and is NOT AEC-Q100 qualified; choose -E/SP or automotive Q-grade variants for AEC-Q100.
