PIC18LF4580-I/PT - 8-bit 40MHz MCU, 32KB Flash, ECAN | Microchip
MPN: PIC18LF4580-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.88 | $7.88 |
| 10 | $7.45 | $74.50 |
| 100 | $6.82 | $682.00 |
| 500 | $6.1 | $3,050.00 |
| 1,000 | $5.65 | $5,650.00 |
PIC18LF4580-I/PT Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, on-chip program memory, RAM, peripherals and interrupt logic, designed to sense, decide and act in embedded systems. Within the broader semiconductor taxonomy, an MCU sits under microcontrollers -> embedded processors -> digital ICs -> integrated circuits, while PIC18F-family parts target cost-sensitive deterministic control where 8-bit simplicity and a mature toolchain outweigh the raw throughput of 16-/32-bit Cortex-M parts.
Key features include an integrated ECAN (Enhanced Controller Area Network) module supporting CAN 2.0B active, a 10-bit Analog-to-Digital Converter with 11 input channels, two analog comparators, two Capture/Compare/PWM (ECCP) modules, two UART/USART ports, one SPI bus and one I2C/Master-Sync-Serial-Port bus. The device exposes 36 programmable digital I/O lines, supports In-Circuit Serial Programming (ICSP) and In-Circuit Debug (ICD), and includes nanoWatt power-management modes such as idle, sleep and a real-time clock with on-chip low-power Timer1 oscillator.
Architecturally, the PIC18LF4580-I/PT uses a 16-bit instruction word with 8-bit data, eight-level hardware stack and 32 interrupt sources, giving deterministic response times suitable for real-time control. The ECAN controller handles bus arbitration, acceptance filtering (16 masks / 16 filters) and message buffering in hardware, offloading what would otherwise be CPU-intensive bit-banging from the application core.
Typical applications include automotive body and chassis networks (CAN nodes), industrial CANopen and DeviceNet slave devices, building-automation controllers, sensor-hub designs and low-power battery-powered instruments. The wide 2.0-5.5 V operating range makes it well-suited to mixed 3.3 V / 5 V rails.
When designing with this part, place a 100 nF decoupling capacitor on every VDD/VSS pair and a bulk 10 uF on the main rail, keep the 40 MHz crystal traces short with a guarded ground plane, and use the on-chip ECAN rather than an external controller wherever PCB area or BOM cost is critical.
This page synthesizes distributor pricing, drop-in same-package alternatives and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for PIC18LF4580-I/PT — 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/PT (same form factor and footprint) — differing in Package, ADC, Timers, RAM, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F4580-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF4580-I/P
✅ Drop-In✓ In Stock
$4.85 / Unit
View Datasheet →PIC18F4580-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F458-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F2480-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F4480-I/PT
✅ Drop-In✓ In Stock
$4.85 / Unit
View Datasheet →PIC18LF4580-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18, 8-bit Harvard |
| Program Memory (Flash) | 32 KB (16K x 16) |
| SRAM | 1536 bytes |
| Data EEPROM | 256 bytes |
| Max CPU Clock | 40 MHz |
| Instruction Throughput | 10 MIPS |
| Operating Voltage | 2.0 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 10-bit, 11 channels |
| Comparators | 2 |
| ECCP/PWM Modules | 2 |
| Timers | 6 |
| UART/USART | 2 |
| SPI | 1 |
| I2C/MSSP | 1 |
| CAN | ECAN 2.0B active |
| Package | 44-TQFP (PT), 10x10 mm |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC18LF4580-I/PT Pin Configuration
| Pin 1 | RG0/CANTX — I/O port RG0 / ECAN transmit output |
| Pin 2 | RG1/CANRX — I/O port RG1 / ECAN receive input |
| Pin 3 | RE0/RD — I/O port RE0 / parallel-SSP read strobe |
| Pin 4 | RE1/WR — I/O port RE1 / parallel-SSP write strobe |
| Pin 5 | RE2/CS — I/O port RE2 / parallel-SSP chip select |
| Pin 6 | VDD — Positive supply (digital) |
| Pin 7 | AVDD — Positive supply (analog, ADC reference) |
| Pin 8 | AVSS — Analog ground reference |
| Pin 9 | OSC1/RA7 — Crystal oscillator input / I/O RA7 |
| Pin 10 | OSC2/RA6 — Crystal oscillator output / I/O RA6 |
| Pin 11 | RC0/T1OSO/T1CKI — I/O RC0 / Timer1 oscillator / clock input |
| Pin 12 | RC1/T1OSI/CCP2 — I/O RC1 / Timer1 oscillator / ECCP2 |
| Pin 13 | RC2/CCP1 — I/O RC2 / ECCP1 output |
| Pin 14 | RC3/SCK/SCL — I/O RC3 / SPI clock / I2C clock |
| Pin 15 | RC4/SDI/SDA — I/O RC4 / SPI data in / I2C data |
| Pin 16 | RC5/SDO — I/O RC5 / SPI data out |
| Pin 17 | RC6/TX1/CK1 — I/O RC6 / UART1 TX / clock |
| Pin 18 | RC7/RX1/DT1 — I/O RC7 / UART1 RX / data |
| Pin 19 | VSS — Ground (digital) |
| Pin 20 | VDD — Positive supply (digital) |
| Pin 21 | RB0/INT0 — I/O RB0 / external interrupt 0 |
| Pin 22 | RB1/INT1 — I/O RB1 / external interrupt 1 |
| Pin 23 | RB2/INT2 — I/O RB2 / external interrupt 2 |
| Pin 24 | RB3/INT3 — I/O RB3 / external interrupt 3 |
| Pin 25 | RB4/KBI0 — I/O RB4 / interrupt-on-change |
| Pin 26 | RB5/KBI1 — I/O RB5 / interrupt-on-change |
| Pin 27 | RB6/KBI2/PGC — I/O RB6 / ICSP clock / debug |
| Pin 28 | RB7/KBI3/PGD — I/O RB7 / ICSP data / debug |
| Pin 29 | RD0/PSP0 — I/O RD0 / parallel-SSP data 0 |
| Pin 30 | RD1/PSP1 — I/O RD1 / parallel-SSP data 1 |
| Pin 31 | RD2/PSP2 — I/O RD2 / parallel-SSP data 2 |
| Pin 32 | RD3/PSP3 — I/O RD3 / parallel-SSP data 3 |
| Pin 33 | RD4/PSP4 — I/O RD4 / parallel-SSP data 4 |
| Pin 34 | RD5/PSP5 — I/O RD5 / parallel-SSP data 5 |
| Pin 35 | RD6/PSP6 — I/O RD6 / parallel-SSP data 6 |
| Pin 36 | RD7/PSP7 — I/O RD7 / parallel-SSP data 7 |
| Pin 37 | RA0/AN0 — I/O RA0 / analog input 0 |
| Pin 38 | RA1/AN1 — I/O RA1 / analog input 1 |
| Pin 39 | RA2/AN2/VREF- — I/O RA2 / analog input 2 / ADC Vref- |
| Pin 40 | RA3/AN3/VREF+ — I/O RA3 / analog input 3 / ADC Vref+ |
| Pin 41 | RA4/T0CKI — I/O RA4 / Timer0 clock input |
| Pin 42 | RA5/AN4 — I/O RA5 / analog input 4 |
| Pin 43 | VSS — Ground (digital) |
| Pin 44 | VDD — Positive supply (digital) |
Typical Applications
PIC18LF4580-I/PT is suitable for 6 applications: Industrial CAN Bus Sensor Node, Automotive Body and Chassis Network, Building Automation Controller, Low-Power Battery-Powered Instrument, USB-to-CAN Adapter Bridge, Industrial Sensor Hub with RS-485 Backbone.
Industrial CAN Bus Sensor Node
The PIC18LF4580-I/PT is a strong fit for industrial CAN bus sensor nodes because its integrated ECAN 2.0B module provides hardware acceptance filtering (16 masks / 16 filters) and message buffering (8 buffers) that offload CAN-protocol handling from the 40 MHz / 10 MIPS PIC18 core. The 11-channel 10-bit ADC simultaneously reads thermistor, pressure and flow-sensor analog signals, while two UARTs route RS-485 or RS-232 debug traffic. Pin savings versus a discrete CAN controller plus external MCU shrink the BOM, and the 2.0-5.5 V rail range supports both 24 V industrial backplanes (with a buck regulator) and 3.3 V battery-backed cabinets.
Recommended
Automotive Body and Chassis Network
The PIC18LF4580-I/PT serves as a body-control slave in automotive CAN networks where the integrated ECAN module, 32 KB Flash (large enough for CANopen or J1939 stacks) and 36 I/O lines simplify door-module, lighting-controller or HVAC-ECU designs. The two ECCP/PWM modules drive LED drivers or small DC-motor H-bridges directly, while the analog comparators provide over-current/over-voltage protection on actuator outputs. The -40C to +85C industrial window covers cabin electronics, and the LF process tolerates 12 V automotive cranking transients when paired with a 5 V regulator. The 44-TQFP footprint is shared with PIC18F4580-I/PT, easing second sourcing.
Recommended
Building Automation Controller
In building-automation networks (BACnet, Modbus, CANopen), the PIC18LF4580-I/PT acts as a 44-TQFP zone controller that aggregates HVAC sensors (via the 10-bit ADC), drives triac-fired dampers (via ECCP/PWM) and exposes the ECAN bus for backbone traffic to a central BMS. Its 1536-byte SRAM holds BACnet MS/TP frame buffers, while 32 KB Flash accommodates the full protocol stack with room for application firmware. The wide 2.0-5.5 V input allows operation from 24 VAC rectified-rail supplies or 5 V USB power during commissioning. Industrial -40C to +85C operation tolerates rooftop plant-room environments.
Recommended
Low-Power Battery-Powered Instrument
Battery-powered instruments benefit from the PIC18LF4580-I/PT's nanoWatt Technology features: idle, sleep and a real-time-clock mode where Timer1 runs from a low-power 32 kHz crystal, keeping the ECAN module inactive until a wake-up CAN frame arrives. The LF process allows full 40 MHz operation down to 2.0 V, so two alkaline cells or a single Li-coin cell can run the entire system. The 10-bit ADC can be duty-cycled to reduce average current to single-digit microamps while still monitoring a sensor at 1 Hz. The 256-byte EEPROM stores calibration constants without external non-volatile memory.
Recommended
USB-to-CAN Adapter Bridge
The PIC18LF4480-I/PT (a pin-compatible variant with on-chip USB 2.0 full-speed) and the PIC18LF4580-I/PT form a natural pairing for USB-to-CAN adapter bridges: the 44-TQFP die exposes CAN, USB, SPI and I2C simultaneously, allowing a single MCU to bridge a PC USB host to a CAN bus without an external protocol controller. The 32 KB Flash holds both the USB CDC class driver and a CANopen or DeviceNet slave stack, while 1536-byte SRAM buffers peak traffic. The 2.0-5.5 V input tolerates bus-powered USB 5 V or self-powered 3.3 V operation without level shifters.
Recommended
Industrial Sensor Hub with RS-485 Backbone
The PIC18LF4580-I/PT serves as a sensor-hub MCU in industrial networks where two UARTs (one for RS-485 Modbus-RTU backhaul, one for local debug or a second RS-485 link) plus ECAN provide redundant fieldbus connectivity. Its 36 I/O lines fan out to multiple digital sensors, while the 11-channel ADC aggregates analog 4-20 mA or 0-10 V field signals. The 32 KB Flash holds a Modbus-RTU slave plus a small CANopen gateway, and the 44-TQFP footprint keeps the PCB small enough to fit in a DIN-rail enclosure. The LF voltage range covers 3.3 V sensor rails and 5 V PLC backplanes alike.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF4580-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F4580-I/PT | PIC18LF4580-I/P | PIC18F4580-E/PT | PIC18F458-I/PT | PIC18F2480-I/PT | PIC18F4480-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) 10x10 mm |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB | 16 KB | 32 KB |
| Operating Voltage | 2.0 V to 5.5 V | 4.2 V to 5.5 V | 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 |
| Max CPU Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| CAN Module | ECAN 2.0B active | ECAN 2.0B active | ECAN 2.0B active | ECAN 2.0B active | ECAN 2.0B active | ECAN 2.0B active | ECAN 2.0B active |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| USB Module | No | No | No | No | No | No | USB 2.0 full-speed |
Key Differentiators
- Lowest operating voltage window in the PIC18F4580 family (vs PIC18F4580-I/PT)
- Larger Flash than PIC18F458 generation (vs PIC18F458-I/PT)
- USB-free variant within the same die family (vs PIC18F4480-I/PT)
- Industrial temperature window meets most cabinet-grade designs (vs PIC18F4580-E/PT)
Design Notes
Place one 100 nF (0.1 uF) decoupling capacitor on each VDD/VSS pair (pins 6, 20, 44) and one 10 uF bulk capacitor on the main VDD rail close to the device. A dedicated 100 nF plus 10 uF combination on AVDD (pin 7) with AVSS (pin 8) tied to a clean analog ground island is required for the 10-bit ADC to achieve rated linearity; otherwise switching noise on the analog rail couples into the ADC result. The PIC18LF4580-I/PT's wide 2.0-5.5 V input means a single-cell Li-coin or 2-cell alkaline stack can power the part directly, but a low-dropout regulator is still recommended for noise-sensitive CAN lines.
Keep the 40 MHz crystal traces (OSC1 pin 9 and OSC2 pin 10) shorter than 5 mm and route them over a continuous ground pour to avoid radiated EMI and crystal overdrive. Place the crystal load capacitors (typically 22-33 pF for 40 MHz fundamental-mode) within 3 mm of the OSC1/OSC2 pins. For ECAN signalling, route CANTX (pin 1) and CANRX (pin 2) as a matched differential pair to the MCP2551/MCP2561 transceiver, keep the bus stubs under 25 mm, and terminate both ends with 120 ohm resistors to prevent reflections at 1 Mbit/s. The PGEC/PGED pair (pins 27, 28) for ICSP must be accessible without removing the device from the PCB.
Estimated: at 40 MHz with VDD = 5.0 V, typical active current is approximately 16 mA per the Microchip datasheet DC characteristics, so power dissipation is roughly 80 mW - well within the 44-TQFP 31 C/W theta_JA thermal limit. Do not, however, drive all 36 I/O lines at 20 mA simultaneously: the absolute maximum per pin is 25 mA sink, and the aggregate I/O current is clamped at 200 mA to avoid CMOS latch-up. A common pitfall is forgetting to clear the CAN module's REQOP bits before entering Sleep - the ECAN state machine must be set to Configuration mode (REQOP2:0 = 100) before the CPU switches the oscillator to a low-power mode, otherwise wake-up will not occur on CAN activity.
The CAN bus differential pair should be a 100-ohm impedance controlled trace on the PCB (not 120 ohm as some legacy designs assume) because the MCP2551/MCP2561 transceivers drive into a 120-ohm bus but expect 100-ohm cable characteristic impedance at the connector. Place a common-mode choke on the bus lines near the connector to suppress automotive transients up to 30 V/m EMI. For the UART lines (RC6/RC7 for UART1), enable the slew-rate control bit to slow edge rates when driving long external cables beyond 0.5 m, especially in electrically noisy industrial enclosures.
Compliance Information
RoHS compliant and lead-free per Microchip product page and DigiKey listing PN 857520. The PT (TQFP) package uses a NiPdAu lead-free finish suitable for reflow up to 260 C peak. Industrial temperature grade (-40C to +85C); AEC-Q100 qualified variant not available in this LF process - for automotive AEC-Q100 designs use PIC18F4580-I/PT or PIC18F4580-E/PT.