PIC18LF4580-I/P - 8-Bit 40MHz 32KB Flash MCU w/ CAN | Microchip
MPN: PIC18LF4580-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.45 | $7.45 |
| 10 | $6.82 | $68.20 |
| 100 | $6.05 | $605.00 |
| 500 | $5.4 | $2,700.00 |
| 1,000 | $4.85 | $4,850.00 |
PIC18LF4580-I/P Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), data memory (RAM), and programmable I/O peripherals. The PIC18 family sits in Microchip's 8-bit mid-range portfolio - positioned above baseline PIC10/12/16 parts and below the 16-bit PIC24/dsPIC families - and is widely adopted in industrial control, automotive, and CAN-bus-connected embedded applications. The integrated ECAN module sets the PIC18LF4580 apart from general-purpose 8-bit MCUs, enabling it to participate directly on Controller Area Networks without an external transceiver-controller pair.
Key features include 32 KB Flash program memory, 1536 bytes of RAM, 256 bytes of EEPROM, 36 digital I/O pins, and a 10-bit ADC with up to 11 channels. Peripherals include enhanced USART, MSSP (I²C/SPI), enhanced CAN (ECAN), capture/compare/PWM (ECCP) modules, and multiple timers. The LF variant operates across 2.0V-5.5V, with 40 MHz CPU clock from the integrated 10 MHz phase-locked-loop oscillator.
The PIC18F4580 uses an enhanced Harvard RISC architecture with a 16-bit instruction word, 8-bit data path, hardware multiplier, and a 32-level hardware stack. The ECAN peripheral supports CAN 2.0B active with multiple transmit/receive buffers, filters, and masks. Internal oscillator modes (8 MHz, 4 MHz, 32 kHz, and PLL) reduce external component count and improve noise immunity in industrial environments.
Typical applications include industrial CAN node controllers, automotive body and chassis ECUs, sensor data acquisition nodes, HVAC control boards, building automation gateways, and battery-powered instrumentation. The combination of integrated CAN, generous I/O count, and wide operating voltage make the part especially popular in legacy industrial and automotive designs predating the shift to 32-bit ARM Cortex-M MCUs.
When designing with this part, ensure the ICSP/ICD pins (RB6/RB7 or dedicated PGC/PGD on larger packages) are accessible for in-circuit programming and debugging. The 40-pin PDIP package is friendly for prototyping and rework but consumes significant PCB area; consider the TQFP-44 (PT) or QFN-44 (ML) variants of the same die for production layouts.
This page synthesizes verified distributor pricing, drop-in and same-die alternatives sourced from Microchip's own part numbering system, and practical design notes not always called out in the manufacturer datasheet.
Drop-in alternatives for PIC18LF4580-I/P — 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 PIC18LF4580-I/P (same form factor and footprint) — differing in Package, ADC, Program Memory (Flash), Core Architecture, Data EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F4580-I/P
✅ Drop-In✓ In Stock
$5.1 / Unit
View Datasheet →PIC18LF4480-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF4585-I/P
✅ Drop-In✓ In Stock
$5.55 / Unit
View Datasheet →PIC18F46K80-I/P
✅ Drop-In✓ In Stock
$4.78 / Unit
View Datasheet →PIC18F4580-E/P
✅ Drop-In✓ In Stock
$4.41 / Unit
View Datasheet →PIC18LF4580-I/P Maximum Ratings & Electrical Characteristics
| Core Processor | PIC |
| Core Size | 8-bit |
| Series | PIC® 18F |
| Maximum CPU Speed | 40 MHz |
| Program Memory Size | 32 KB (16K x 16) Flash |
| RAM Size | 1536 bytes |
| EEPROM Size | 256 bytes |
| Number of I/O Pins | 36 |
| Connectivity | CANbus, I²C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, HLVD, POR, PWM, WDT |
| ADC | 10-bit, up to 11 channels |
| Supply Voltage | 2.0 V to 5.5 V (LF variant) |
| Operating Temperature | -40 °C to +85 °C (Industrial) |
| Package | 40-PDIP (P) |
| Mounting Type | Through-Hole |
| Lead Free / RoHS | Yes (P suffix = lead-free, RoHS-compliant) |
| CAN Module | ECAN (Enhanced CAN 2.0B active) |
| Internal Oscillator | 8 MHz / 32 kHz with 4x PLL |
PIC18LF4580-I/P Pin Configuration
| Pin 1 | MCLR/VPP/RE3 — Master Clear (reset) input or programming voltage; RE3 digital input on some devices |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog input channel 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog input channel 1 |
| Pin 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input channel 2 / ADC VREF- |
| Pin 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input channel 3 / ADC VREF+ |
| Pin 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — PORTA bit 5 / analog input channel 4 / SPI slave select |
| Pin 8 | RE0/RD/AN5 — PORTE bit 0 / read strobe for parallel slave port / analog input channel 5 |
| Pin 9 | RE1/WR/AN6 — PORTE bit 1 / write strobe for PSP / analog input channel 6 |
| Pin 10 | RE2/CS/AN7 — PORTE bit 2 / chip select for PSP / analog input channel 7 |
| Pin 11 | VDD — Positive supply voltage (2.0 V to 5.5 V on LF variant) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | OSC1/CLKI — Oscillator crystal input / external clock input |
| Pin 14 | OSC2/CLKO/RA6 — Oscillator crystal output / clock output / PORTA bit 6 |
| Pin 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 I/O |
| Pin 17 | RC2/CCP1 — PORTC bit 2 / Enhanced CCP1 I/O |
| Pin 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I²C clock |
| Pin 19 | RD0/PSP0/C1IN+ — PORTD bit 0 / PSP data bit 0 / comparator 1 input+ |
| Pin 20 | RD1/PSP1/C1IN- — PORTD bit 1 / PSP data bit 1 / comparator 1 input- |
| Pin 21 | RD2/PSP2/C2IN+ — PORTD bit 2 / PSP data bit 2 / comparator 2 input+ |
| Pin 22 | RD3/PSP3/C2IN- — PORTD bit 3 / PSP data bit 3 / comparator 2 input- |
| Pin 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I²C data |
| Pin 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 25 | RC6/TX/CK — PORTC bit 6 / USART async transmit / USART sync clock |
| Pin 26 | RC7/RX/DT — PORTC bit 7 / USART async receive / USART sync data |
| Pin 27 | RD4/PSP4/ECCP1/P1A — PORTD bit 4 / PSP data bit 4 / ECCP1 output / PWM P1A |
| Pin 28 | RD5/PSP5/P1B — PORTD bit 5 / PSP data bit 5 / ECCP1 PWM P1B |
| Pin 29 | RD6/PSP6/P1C — PORTD bit 6 / PSP data bit 6 / ECCP1 PWM P1C |
| Pin 30 | RD7/PSP7/P1D — PORTD bit 7 / PSP data bit 7 / ECCP1 PWM P1D |
| Pin 31 | VSS — Ground reference |
| Pin 32 | VDD — Positive supply voltage |
| Pin 33 | RB0/INT0/FLT0 — PORTB bit 0 / external interrupt 0 / ECCP fault input |
| Pin 34 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Pin 35 | RB2/INT2/CANTX — PORTB bit 2 / external interrupt 2 / CAN bus transmit |
| Pin 36 | RB3/INT3/CANRX — PORTB bit 3 / external interrupt 3 / CAN bus receive |
| Pin 37 | RB4 — PORTB bit 4 (interrupt-on-change) |
| Pin 38 | RB5 — PORTB bit 5 (interrupt-on-change) |
| Pin 39 | RB6/PGC — PORTB bit 6 (interrupt-on-change) / ICSP clock |
| Pin 40 | RB7/PGD — PORTB bit 7 (interrupt-on-change) / ICSP data |
Typical Applications
PIC18LF4580-I/P is suitable for 7 applications: Industrial CAN Sensor Node, Automotive Body Control Module, Battery-Powered Data Logger, Building Automation Gateway, HVAC Control Board, CAN-Based Motor Drive Controller, Educational / Development Platform.
Industrial CAN Sensor Node
The PIC18LF4580-I/P's integrated ECAN 2.0B controller and 36 I/O pins make it a strong fit for industrial CAN sensor nodes monitoring pressure, flow, temperature, or vibration. With 32 KB Flash and 1536 B RAM, the part supports a CANopen or DeviceNet slave stack alongside sensor conditioning routines. At 40 MHz (10 MIPS), the MCU handles 10 ms polling loops and CAN message transmission without throughput strain. The 2.0 V-5.5 V range simplifies 3.3 V sensor rail designs, while the 40-pin PDIP package is ideal for hand-soldered industrial prototype boards where rework access matters.
Recommended
Automotive Body Control Module
The PIC18LF4580 family is widely deployed in non-safety automotive body controllers (window lifters, mirror adjusters, HVAC blend doors) where integrated ECAN reduces BOM and the wide temperature range tolerates cabin thermal stress. The 10-bit ADC with up to 11 channels digitizes potentiometer positions and thermistor inputs for closed-loop motor control, while the ECCP/PWM module drives small DC motor H-bridges. Designers choose the PIC18LF4580-I/P for prototyping and the AEC-Q100 qualified PIC18F4580-I/PT variant for production automotive builds using the same firmware and pinout.
Recommended
Battery-Powered Data Logger
The LF (low-voltage) suffix denotes 2.0 V-5.5 V operation, allowing the PIC18LF4580-I/P to run directly from two AA alkaline cells or a single Li-ion cell down to its cut-off voltage without boost conversion. The integrated 10-bit ADC samples sensor data while the ECAN module remains ready for diagnostic bus queries, and the on-chip 8 MHz / 32 kHz oscillators reduce external parts count - critical for long-runtime, low-maintenance data loggers. Sleep current and peripheral gating extend battery life, while 32 KB Flash holds weeks of timestamped measurement records before offload.
Recommended
Building Automation Gateway
The PIC18LF4580-I/P acts as a low-cost CAN-to-UART/Ethernet bridging node in building automation systems, routing BACnet, Modbus, or proprietary protocols between field sensors and a building management controller. Its 36 I/O lines drive status LEDs, keypads, and relay outputs while the ECAN module terminates a sub-bus of HVAC or lighting controllers. The 1536 B RAM handles protocol buffers and the 32 KB Flash accommodates custom routing tables. Through-hole PDIP packaging simplifies field-serviceable installation in electrical cabinets.
Recommended
HVAC Control Board
Commercial and residential HVAC controllers use the PIC18LF4580-I/P to read multiple thermistor inputs via its 10-bit ADC, drive triac-fired blower and compressor outputs via PWM/ECCP, and communicate with indoor unit networks over CAN. The wide 2.0 V-5.5 V supply tolerates 24 VAC-derived rails after rectification, and the -40 °C to +85 °C industrial temperature grade supports unconditioned equipment-room installation. Through-hole PDIP is preferred by HVAC OEMs for wave-soldered production lines and field-replaceable serviceability.
Recommended
CAN-Based Motor Drive Controller
Small brushless DC and stepper motor controllers in industrial automation use the PIC18LF4580-I/P as the supervisory MCU, accepting torque/speed commands over CAN and generating PWM via the ECCP module to gate the power-stage FETs. The hardware ECAN offloads message filtering from the CPU, freeing cycles for current-loop math at 10 MIPS. The 36 I/O pins interface Hall sensors, encoders, fault comparators, and brake/coast outputs, while the 32 KB Flash holds field-oriented control (FOC) firmware for low-power sub-1 kW drives.
Recommended
Educational / Development Platform
The PIC18LF4580-I/P in 40-pin PDIP is a popular teaching and prototyping MCU because the through-hole package fits breadboards and is hand-solderable, while the integrated ECAN exposes students to real industrial networking protocols without extra ICs. The 32 KB Flash and 1536 B RAM comfortably hold student projects involving CAN, ADC, PWM, and I²C peripherals, and the MPLAB X IDE + XC8 toolchain is free for educational use. Many university mechatronics and embedded systems labs standardize on the PIC18F4580 family for CAN coursework.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF4580-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F4580-I/P | PIC18LF4480-I/P | PIC18LF4585-I/P | PIC18F46K80-I/P | PIC18F4580-E/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-PDIP | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same |
| Flash Program Memory | 32 KB | 32 KB | 16 KB (-50%) | 48 KB (+50%) | 64 KB (+100%) | 32 KB |
| RAM | 1536 bytes | 1536 bytes | 768 bytes (-50%) | 3328 bytes (+117%) | 3648 bytes (+138%) | 1536 bytes |
| Supply Voltage | 2.0 V to 5.5 V (LF) | 4.2 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 1.8 V to 5.5 V | 4.2 V to 5.5 V |
| CPU Speed | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 64 MHz / 16 MIPS | 40 MHz / 10 MIPS |
| CAN Module | ECAN 2.0B active | ECAN 2.0B active | ECAN 2.0B active | ECAN 2.0B active | ECAN 2.0B active (improved) | ECAN 2.0B active |
| 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 | -40 °C to +125 °C (Extended) |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 1024 bytes (+300%) | 256 bytes |
Key Differentiators
- Wide 2.0 V-5.5 V supply range with integrated ECAN (vs PIC18F4580-I/P)
- 32 KB Flash + 1536 B RAM in the original PIC18F4580 footprint (vs PIC18LF4480-I/P)
- Integrated ECAN with 32 KB Flash, no external controller needed (vs PIC18F46K80-I/P)
Design Notes
The PIC18LF4580-I/P supports 2.0 V-5.5 V operation, but decoupling must follow Microchip's recommended pattern: place a 100 nF ceramic capacitor within 6 mm of each VDD/VSS pair (pins 11/12 and 31/32) and add a 10 µF bulk tantalum or ceramic at the board supply entry. The dual VDD/VSS pin pairs (11/12 and 31/32) must both be connected; floating one pair causes digital noise on the ADC reference and intermittent ECAN bus errors. For sleep-mode designs, switch the ADC off and gate unused peripherals to achieve the lowest quiescent current.
Always configure MCLR as a reset input (default) on the PIC18LF4580-I/P rather than as RE3 digital input, unless the application explicitly requires RE3 functionality - configuration is via the CONFIG3H register's MCLRE bit. The ICSP pins RB6/PGC and RB7/PGD are shared with PORTB and must not be loaded with low-impedance peripherals during in-circuit programming, otherwise programmer handshake failures occur. Place a 10 kΩ pull-up on MCLR per Microchip's reference design to ensure clean reset behavior across temperature.
The integrated ECAN module requires a dedicated external transceiver (MCP2551, TJA1050, or similar) and a properly terminated bus (120 Ω at each end). Route the CANTX (RB2) and CANRX (RB3) traces as a short differential pair to the transceiver, keeping them away from switching power and PWM traces to avoid coupling. Place a 100 nF decoupling capacitor on the transceiver VCC and add TVS protection on the bus lines for industrial EMC compliance. Failure to terminate correctly causes intermittent CAN bus errors and high retransmit counts.
When using the 40-pin PDIP package, allocate a 2.54 mm-pitch through-hole footprint with at least 0.5 mm annular ring and keep out the top-side copper pour under the IC body. Place the decoupling capacitors on the bottom side directly beneath the VDD/VSS pins for shortest loop area. For prototypes, reserve a 2x3 100-mil header footprint on the ICSP pins (RB6/RB7/MCLR/VDD/VSS) so a PICkit programmer can clip on without rework. Production designs targeting the same die should migrate to the TQFP-44 (PT suffix) variant to save board area.
Compliance Information
RoHS-compliant and lead-free per Microchip product page (P suffix denotes lead-free PDIP). Industrial temperature grade -40 °C to +85 °C. Not AEC-Q100 qualified - use PIC18F4580-I/PT automotive-grade variant for AEC-Q100 designs. Halogen-free status not explicitly stated in distributor listings.
