PIC18LF2580-I/ML - 8-bit 40MHz 32KB Flash MCU | Microchip
MPN: PIC18LF2580-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.31 | $7.31 |
| 10 | $6.62 | $66.20 |
| 100 | $5.94 | $594.00 |
| 500 | $5.26 | $2,630.00 |
| 1,000 | $4.72 | $4,720.00 |
PIC18LF2580-I/ML Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, and programmable I/O peripherals. The PIC18 family specifically uses an enhanced 8-bit RISC core with a hardware multiplier, 16-bit instructions, and a deterministic interrupt model, and sits within the broader taxonomy: PIC18 -> PIC microcontrollers -> 8-bit microcontrollers -> microcontroller -> embedded processor -> semiconductor. The PIC18LF2580 specifically belongs to the PIC18F2580/2480 sub-family, which adds an integrated CAN 2.0B controller with full acceptance filtering, alongside MSSP (I2C/SPI) and enhanced USART peripherals.
Key features include the integrated ECAN module for industrial and automotive networking, a 10-bit ADC with up to 8 channels, two 8-bit and three 16-bit timers, a 10-bit PWM module with capture/compare, and 25 digital I/O pins. The nanoWatt Technology power-management suite offers multiple idle and sleep modes with on-the-fly clock switching. The 28-QFN package provides a compact 6x6 mm footprint with an exposed thermal pad (EP) for improved thermal performance at higher ambient temperatures.
Typical applications include CAN-based industrial automation nodes (sensor hubs, motor control sidecars, building-automation gateways), automotive body and chassis subsystems requiring CAN connectivity, low-cost embedded control boards, sensor signal conditioning, and battery-powered metering. The on-chip CAN peripheral eliminates the need for an external CAN transceiver controller, simplifying BOM and PCB layout for distributed control networks.
When designing with this part, place a 100 nF decoupling capacitor within 5 mm of VDD, add a bulk capacitor on the CAN supply rail, and connect the exposed thermal pad to a ground copper pour of at least 25 mm² for adequate heat spreading. Verify that the chosen CAN transceiver (e.g., MCP2551 or MCP2561) matches the bus topology and that the termination resistance is properly applied at the bus ends.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that are not found in the manufacturer datasheet alone, helping engineers evaluate replacement options and layout trade-offs.
Drop-in alternatives for PIC18LF2580-I/ML — 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/ML (same form factor and footprint) — differing in ADC, Timers, Package, Data SRAM, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F2580-I/ML
✅ Drop-In✓ In Stock
$4.31 / Unit
View Datasheet →PIC18F2480-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF2480-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF2580-I/SO
✅ Drop-In✓ In Stock
$3.56 / Unit
View Datasheet →PIC18F2580-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF2480-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF2580-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit RISC) |
| CPU Core | PIC18 enhanced RISC |
| Maximum Clock Frequency | 40 MHz |
| Program Memory | 32 KB (16K x 16) Flash |
| Data SRAM | 1536 bytes |
| EEPROM | 256 bytes |
| Supply Voltage Range | 2.0 V to 5.5 V |
| Typical Supply Voltages | 2.5 V / 3.3 V / 5 V |
| I/O Pins | 25 |
| ADC | 10-bit, 8 channels |
| PWM | 10-bit, up to 2 channels |
| Timers | 2 x 8-bit, 3 x 16-bit |
| Communication | CAN 2.0B, I2C (MSSP), SPI (MSSP), EUSART |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| Package | 28-QFN (6x6 mm) with exposed pad |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | 1 |
PIC18LF2580-I/ML Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active-low |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog input AN0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog input AN1 |
| Pin 4 | RA2/AN2/VREF- — PORTA bit 2 / AN2 / negative voltage reference |
| Pin 5 | RA3/AN3/VREF+ — PORTA bit 3 / AN3 / positive voltage reference |
| Pin 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — PORTA bit 5 / AN4 / SPI slave select |
| Pin 8 | VSS — Ground |
| Pin 9 | OSC1/CLKI/RA7 — Crystal input / external clock input |
| Pin 10 | OSC2/CLKO/RA6 — Crystal output / clock output |
| Pin 11 | RC0/T1OSO/T13CKI — PORTC bit 0 / Timer1 oscillator output / Timer3 clock input |
| Pin 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 PWM |
| Pin 13 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Pin 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock (MSSP) |
| Pin 15 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data (MSSP) |
| Pin 16 | RC5/SDO — PORTC bit 5 / SPI data out (MSSP) |
| Pin 17 | RC6/TX/CK — PORTC bit 6 / EUSART TX / clock |
| Pin 18 | RC7/RX/DT — PORTC bit 7 / EUSART RX / data |
| Pin 19 | VSS — Ground |
| Pin 20 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Pin 21 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| Pin 22 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Pin 23 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Pin 24 | RB3/INT3 — PORTB bit 3 / external interrupt 3 / PGM |
| Pin 25 | RB4 — PORTB bit 4 |
| Pin 26 | RB5/PGM — PORTB bit 5 / LVP programming |
| Pin 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin 28 | RB7/PGD — PORTB bit 7 / ICSP data |
Typical Applications
PIC18LF2580-I/ML is suitable for 6 applications: CAN-Node Industrial Sensor Hub, Automotive Body and Chassis CAN Subsystem, Battery-Powered Smart Meter / Remote Sensor, Low-Cost Embedded Control Board (PWM Motor Sidecar), HVAC and Building Automation Controller, CAN-Based Lighting and Signage Controller.
CAN-Node Industrial Sensor Hub
The PIC18LF2580-I/ML is well matched to CAN-based industrial sensor hubs because it integrates a hardware ECAN 2.0B controller and an 8-channel 10-bit ADC in a single 28-QFN package. The 32 KB Flash allows a full Modbus-to-CAN gateway stack plus calibration tables, and the 2.0-5.5 V range accepts a 3.3 V rail shared with the wireless daughter module. With 16 MIPS throughput, the MCU can service 1 kHz control loops while keeping the CAN bus at 1 Mbps. Place a 100 nF decoupling cap on VDD and use an MCP2561 transceiver for ISO 11898-2/-5 compliance.
Recommended
Automotive Body and Chassis CAN Subsystem
The PIC18LF2580-I/ML's integrated ECAN peripheral simplifies body and chassis CAN nodes such as door modules, mirror controllers, and seat-position sensors. Its 32 KB Flash holds CANopen or J1939 lightweight stacks plus diagnostics, and the 28-QFN EP provides a 6x6 mm footprint suitable for tight module enclosures. At 40 MHz the part handles 10 ms task scheduling while still servicing CAN interrupts. The part is industrial-grade rather than AEC-Q100 qualified, so for safety-critical OBC or powertrain functions use PIC18F2580-I/ML or a Q-qualified equivalent.
Recommended
Battery-Powered Smart Meter / Remote Sensor
The 'LF' supply range (2.0 V to 5.5 V) lets the PIC18LF2580-I/ML run directly from a single Li-ion cell or 2xAA pack, ideal for remote metering and wireless sensor nodes. Its nanoWatt Technology idle/sleep modes drop quiescent consumption below 1 uA typical, allowing months of standby operation. The integrated 10-bit ADC handles up to 8 analog sensor channels, while EUSART drives a UART-based LoRa or Sub-GHz RF modem. 32 KB Flash supports over-the-air bootloader and application image.
Recommended
Low-Cost Embedded Control Board (PWM Motor Sidecar)
The PIC18LF2580-I/ML's 2 PWM channels and 5 timers support simple brushed or stepper motor sidecar control on a small PCB. The 25 I/O pins expose enough headroom for limit switches, quadrature encoders, and a UART debug port. The 28-QFN EP land pattern has good thermal dissipation for sustained PWM duty cycles, and the 40 MHz clock yields 200 ns instruction execution for tight control loops. Pair it with an H-bridge driver IC and a 3.3 V LDO.
Recommended
HVAC and Building Automation Controller
The PIC18LF2580-I/ML serves as a node controller in HVAC and building-automation networks by combining ECAN for backbone communication with MSSP-based I2C sensor expansion. Its 32 KB Flash holds BACnet MS-TP to CAN bridging logic or Modbus RTU/DTC stack, while 1536 bytes of SRAM buffers telemetry packets. The 2.0-5.5 V supply range accepts 3.3 V from a 24 V-to-3.3 V DC-DC downstream of the building bus. 10-bit ADC reads thermistor/HVAC analog sensors with adequate resolution for setpoint control.
Recommended
CAN-Based Lighting and Signage Controller
The PIC18LF2580-I/ML integrates well into CAN-controlled architectural lighting and signage where each node drives LED strings and reports back via CAN. The 10-bit PWM module dims LEDs smoothly, while the 25 I/O pins connect to driver enable lines, current-sense amplifiers, and thermal sensors. The 28-QFN EP package fits behind LED-driver PCBs and the 2.0-5.5 V supply range accommodates 3.3 V or 5 V LED driver rails. The hardware ECAN peripheral keeps the LED refresh timing deterministic.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF2580-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F2580-I/ML | PIC18F2480-I/ML | PIC18LF2480-I/ML | PIC18LF2580-I/SO | PIC18F2580-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-QFN (6x6 mm) | 28-QFN (6x6) - same | 28-QFN (6x6) - same | 28-QFN (6x6) - same | 28-SOIC (300 mil) | 28-SOIC (300 mil) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 32 KB | 16 KB | 16 KB | 32 KB | 32 KB |
| SRAM | 1536 bytes | 1536 bytes | 1536 bytes | 1536 bytes | 1536 bytes | 1536 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Max Clock Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Supply Voltage Range | 2.0 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 4.2 V to 5.5 V |
| Integrated CAN 2.0B | Yes (ECAN) | Yes | Yes | Yes | Yes | Yes |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 |
| Operating Temperature | -40 C to +85 C (I grade) | -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 |
Key Differentiators
- Integrated ECAN 2.0B controller with 32 KB Flash in a 28-QFN (vs PIC18F2480-I/ML)
- Wide 2.0 V to 5.5 V supply range matches 3.3 V and 5 V rails (vs PIC18F2580-I/ML)
- 28-QFN EP provides best-in-class thermal dissipation in this family (vs PIC18LF2580-I/SO)
Design Notes
Place a 100 nF ceramic decoupling capacitor within 5 mm of each VDD pin, and add a 10 uF bulk capacitor on the supply rail. The PIC18LF2580 can operate from 2.0 V to 5.5 V, but the MCU core's POR voltage threshold and Brown-Out Reset (BOR) settings must match the chosen rail. For 3.3 V-only systems enable BOR; for battery-powered designs disable BOR in software and use the on-chip voltage regulator's low-voltage detect (LVD) to safely signal low-battery events.
The 28-QFN (6x6 mm) variant has an exposed pad on the underside (pin 29, not electrically connected on this package, but identified as the EP). Solder the EP to a ground copper pour of at least 25 mm² to spread heat and provide low-inductance ground return for the high-frequency clock. For 40 MHz operation at 5 V with all peripherals active, the EP prevents junction temperature from rising more than 10-15 C above ambient on a 4-layer FR4 board.
Route the ECAN CANTX/CANRX traces as a differential pair with 120 ohm impedance matching ISO 11898-2/-5, and keep them short. Place the MCP2561 or MCP2551 transceiver within 50 mm of the MCU, and use a 120 ohm termination resistor at each end of the CAN bus. Provide an ESD protection array (e.g., PESD1CAN) on the bus pins to withstand IEC 61000-4-2 contact discharge. Decouple the transceiver's Vsup and Vcc pins with 100 nF + 4.7 uF capacitors per the MCP2561 datasheet.
Do not assume PIC18LF2580 and PIC18F2580 are interchangeable at the firmware level - they share the same instruction set and SFR map, but the configuration bits for the internal voltage regulator and POR differ. Verify in MPLAB X that the configuration word matches the chosen device variant. When migrating from QFN (PIC18LF2580-I/ML) to SOIC (PIC18LF2580-I/SO), confirm that the SOIC variant exposes the same 25 I/O - the SOIC omits some analog/digital remap options present on the QFN's EP version.
Keep the OSC1/OSC2 traces short and surrounded by a ground guard ring to reduce EMI from the 40 MHz fundamental. If using a high-speed crystal (HS mode), add 22-33 pF load capacitors on each crystal pin matched to the crystal's load specification. For cost-sensitive designs using the internal 16 MHz HFINTOSC instead of a crystal, the calibration constant stored in Flash must be retained across erase cycles, or the internal oscillator can drift up to +/-2% across temperature.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade (-40 C to +85 C) only; not AEC-Q100 qualified. For automotive AEC-Q100 applications choose PIC18F2580-I/ML automotive grade variants or PIC18FxxK80 family.
