PIC18F2580-I/SP - 8-Bit 40MHz MCU 32KB Flash w/ ECAN | Microchip
MPN: PIC18F2580-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.85 | $7.85 |
| 10 | $6.95 | $69.50 |
| 100 | $5.85 | $585.00 |
| 500 | $5.1 | $2,550.00 |
| 1,000 | $4.55 | $4,550.00 |
PIC18F2580-I/SP Overview
An 8-bit microcontroller is a programmable logic device built around an 8-bit data bus and ALU, typically used for embedded control tasks where deterministic timing, low cost, and small code footprint outweigh raw throughput. The PIC18 family sits in the broader taxonomy of microcontrollers (MCU) -> CMOS microcontrollers -> single-chip embedded controllers -> semiconductors. Compared with 16-bit and 32-bit MCUs, 8-bit parts like the PIC18F2580-I/SP consume less power, have simpler toolchains, and remain widely deployed in CAN-connected sensor nodes, automotive body electronics, and industrial automation.
Key features include 25 digital I/O pins, a 10-bit ADC with up to 8 channels, 4 timers (Timer0/1/2/3), 2 capture/compare/PWM modules, an ECAN module compliant with CAN 2.0B, a USART, an MSSP (SPI/I2C) port, and nanoWatt Technology power management that drops quiescent current to microamp levels in Sleep. The 32KB Flash is self-write-capable, supporting in-application reprogramming for field firmware updates.
Architecturally, the PIC18F2580-I/SP uses a 16-bit instruction word with an 8-bit data path, Harvard memory architecture, and a hardware multiplier that completes an 8x8 multiply in one cycle. The ECAN module has dedicated masks, filters, and DMA-style buffering, offloading message acceptance from the CPU. The 10-bit ADC uses a sample-and-hold with a successive-approximation register, and the nanoWatt features include multiple idle modes, oscillator switching, and peripheral disable bits.
Typical applications include CAN-based industrial sensor nodes, automotive body-control modules (mirror/lighting/seat controllers), HVAC damper and actuator drivers, and low-power remote data loggers. Its combination of ECAN, 10-bit ADC, and through-hole SPDIP package makes it especially well-suited for prototyping and harsh-environment CAN nodes.
When designing with this device, allocate the ECAN TX/RX pins on PORTC6/RC7 carefully because remapping is limited on this 28-pin variant, and ensure the ECAN baud-rate prescaler accounts for Fosc tolerance over temperature. Decouple VDD with a 0.1uF ceramic plus 10uF bulk, and place the crystal or resonator within 1cm of OSC1/OSC2 to avoid noise coupling into the CAN bus.
This page synthesizes distributor pricing, drop-in PIC18 SPDIP alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC18F2580-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 PIC18F2580-I/SP (same form factor and footprint) — differing in Package, Timers, ADC, Program Memory (Flash), Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F2585-I/SP
✅ Drop-In✓ In Stock
$5.95 / Unit
View Datasheet →PIC18F2580-E/SP
✅ Drop-In✓ In Stock
$5.31 / Unit
View Datasheet →PIC18F2480-I/SP
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →PIC18F2525-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.45 / Unit
View Datasheet →PIC18F2455-I/SP
✅ Drop-In✓ In Stock
$4.65 / Unit
View Datasheet →PIC18F2550-I/SP
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →PIC18F25K50-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F2580-I/SP Maximum Ratings & Electrical Characteristics
| Product Family | PIC18F |
| Core | PIC18 (8-bit RISC, 16-bit instruction word) |
| Maximum CPU Clock | 40 MHz (10 MIPS) |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Data SRAM | 1536 bytes |
| Data EEPROM | 256 bytes |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 25 |
| ADC | 10-bit, up to 8 channels |
| Timers | 4 (Timer0/1/2/3) |
| Capture/Compare/PWM | 2 CCP modules |
| Communication | ECAN (CAN 2.0B), USART, MSSP (SPI/I2C) |
| Package | 28-pin SPDIP (SP) |
| Operating Temperature | -40C to +85C (industrial) |
| Power-Saving Modes | nanoWatt Technology (idle, sleep, peripheral disable) |
| Mounting Type | Through-Hole (DIP) |
| RoHS Status | Compliant (lead-free terminal finish) |
PIC18F2580-I/SP Pin Configuration
| Pin 1 | MCLR/VPP/RE3 — Master Clear (reset) input / programming voltage / digital input RE3 |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pin 4 | RA2/AN2/VREF-/CVREF — PORTA bit 2 / analog input 2 / ADC VREF- / comparator reference |
| Pin 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC VREF+ |
| Pin 6 | RA4/T0CKI/C1OUT — PORTA bit 4 / Timer0 clock / Comparator1 output |
| Pin 7 | RA5/AN4/SS/C2OUT — PORTA bit 5 / analog input 4 / SPI slave select / Comparator2 output |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/RA7 — Oscillator input / PORTA bit 7 |
| Pin 10 | OSC2/RA6 — Oscillator output / PORTA bit 6 |
| Pin 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| Pin 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Pin 13 | RC2/CCP1 — PORTC bit 2 / CCP1 |
| Pin 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin 15 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 17 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock / ECAN TX |
| Pin 18 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data / ECAN RX |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply (4.2V to 5.5V) |
| Pin 21 | RB0/INT0/FLT0 — PORTB bit 0 / external interrupt 0 / PWM fault |
| Pin 22 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Pin 23 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Pin 24 | RB3/CCP2 — PORTB bit 3 / CCP2 output |
| 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
PIC18F2580-I/SP is suitable for 6 applications: CAN Bus Industrial Sensor Node, Automotive Body Control Modules, HVAC Damper and Actuator Drivers, Low-Power Remote Data Loggers, CAN-Enabled Industrial Gateways, USB-to-CAN Bridge Modules.
CAN Bus Industrial Sensor Node
The PIC18F2580-I/SP is purpose-built for industrial CAN sensor nodes thanks to its integrated ECAN module (Bosch CAN 2.0B compliant) and 28-pin SPDIP through-hole package that simplifies harsh-environment prototypes. With 32KB Flash and 1536B SRAM it can host a CANopen or DeviceNet slave stack plus sensor calibration firmware; its 40MHz CPU delivers 10 MIPS, ample for 250kbps/500kbps CAN traffic alongside periodic ADC reads. Place the part on a 4-layer PCB with 120-ohm CAN bus termination, an MCP2551 or TJA1050 CAN transceiver on RC6/RC7, and use nanoWatt Sleep to drop node current below 100uA between transmissions. Compared with 16-bit MCU alternatives, the PIC18F2580-I/SP keeps the BOM shorter and the firmware path deterministic.
Recommended
Automotive Body Control Modules
In automotive body-control applications (mirror, lighting, seat modules, HVAC dampers) the PIC18F2580-I/SP shines because the ECAN bus integrates cleanly with vehicle CAN networks and its 25 I/O pins drive relays, PWMs, and switches directly. The 10-bit ADC reads thermistor/sensor inputs for cabin temperature and seat-position feedback, while 2 CCP modules generate PWM for motor and LED drivers at up to 40MHz instruction rate. The industrial temperature grade -40C to +85C covers most cabin environments; for under-hood duty choose the PIC18F2580-E/SP extended-temp variant. Pair with TJA1050 or MCP2551 transceivers and add TVS diodes on the bus to meet ISO 7637 transient immunity. The 28-pin SPDIP footprint is convenient for development harnesses.
Recommended
HVAC Damper and Actuator Drivers
The PIC18F2580-I/SP is well matched to HVAC damper and actuator driver boards where 4 timers, 2 CCP PWM modules, 10-bit ADC, and 25 I/O pins provide all the motor/valve/thermistor plumbing needed. The PIC18 enhanced core runs the PID control loop in microseconds, and ECAN ties the damper board into a building-automation backbone (BACnet/Modbus-over-CAN). The 32KB Flash comfortably holds damper-position calibration tables plus fault diagnostics, while nanoWatt sleep modes keep standby power under 1mA for battery-backed thermostats. Decouple VDD with 0.1uF plus 10uF bulk and route the CAN bus traces differentially with 120-ohm termination at each end of the segment.
Recommended
Low-Power Remote Data Loggers
Remote data loggers for environmental, agricultural, and metering applications benefit from the PIC18F2580-I/SP's nanoWatt Technology idle modes and 10-bit ADC, while the ECAN module is optional (use as USART/RS-485 gateway). The MCU wakes on Timer1 overflow, samples sensors, writes to internal 256B EEPROM, and returns to Sleep drawing microamps - critical for battery life. The 28-pin SPDIP package accommodates a CR2477 coin-cell footprint and through-hole screw terminals in harsh outdoor enclosures. Its 32KB Flash can host months of timestamped logging routines. For designs without CAN, the PIC18F2520-I/SP shares the same footprint and is a tighter fit.
Recommended
CAN-Enabled Industrial Gateways
Industrial gateways that bridge CAN to Ethernet, RS-485, or USB benefit from the PIC18F2580-I/SP's ECAN + USART + MSSP combination, providing three independent serial interfaces. The PIC18's 10 MIPS performance is sufficient to run a CAN-to-Modbus or CAN-to-UART bridge firmware with 32KB Flash headroom for protocol parsing. The 28-pin SPDIP simplifies hand-soldered pilot runs and field replacements. Place the MCU close to its CAN transceiver and bus ESD diodes, and ensure the crystal oscillator is within 1cm of OSC1/OSC2 for clean ECAN clocking. For higher throughput, the PIC18F2585-I/SP doubles Flash to 64KB without PCB changes.
Recommended
USB-to-CAN Bridge Modules
Although the PIC18F2580-I/SP lacks native USB, its ECAN + USART combination plus 32KB Flash can host a UART-to-CAN bridge used with an external USB-UART IC like MCP2200 or FT232R. Engineers use this topology for PC-based CAN diagnostics, fleet telematics, and aftermarket automotive scan tools. The 28-pin SPDIP through-hole footprint is robust for benchtop enclosures and engineering development harnesses. For designs that want native USB, swap to PIC18F2550-I/SP (same package, same pinout) - its USB 2.0 FS peripheral trades ECAN for USB while keeping the same 32KB Flash and RAM footprint.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F2580-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F2585-I/SP | PIC18F2580-E/SP | PIC18F2480-I/SP | PIC18F2550-I/SP |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SPDIP (SP) | 28-pin SPDIP (SP) - same | 28-pin SPDIP (SP) - same | 28-pin SPDIP (SP) - same | 28-pin SPDIP (SP) - same |
| Program Flash | 32 KB | 64 KB | 32 KB | 16 KB | 32 KB |
| Data SRAM | 1536 B | 3328 B | 1536 B | 768 B | 2048 B |
| Max CPU Clock | 40 MHz (10 MIPS) | 40 MHz | 40 MHz | 40 MHz | 48 MHz (12 MIPS) |
| ECAN Module | Yes (CAN 2.0B) | Yes | Yes | No | No (USB instead) |
| USB 2.0 FS | No | No | No | No | Yes |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
| Unit Price (1 pc, USD) | $7.85 | $8.95 | $9.50 | $7.10 | $7.50 |
Key Differentiators
- Integrated ECAN module with 32KB Flash (vs PIC18F2480-I/SP)
- Through-hole SPDIP for prototypes and harsh environments (vs PIC18F2580-I/SO)
- Drop-in upgrade with 64KB Flash (vs PIC18F2585-I/SP)
- Industrial temperature grade with broad distributor stock (vs PIC18F2580-E/SP)
Design Notes
Place a 0.1uF ceramic decoupling capacitor as close as possible to each VDD pin (pin 20 and pin 14's analog supply), plus a 10uF bulk tantalum or aluminum on the 5V rail. The PIC18F2580-I/SP draws approximately 16mA active at 40MHz and drops to single-digit microamps in Sleep mode using nanoWatt Technology. A separate AVCC/AVSS pair (or RC filter) is recommended if ADC accuracy matters, since digital switching noise can corrupt the 10-bit ADC reference.
Route the ECAN bus as a 120-ohm differential pair (CANH/CANL) with matched length and impedance, keeping stub lengths under 25mm. Place the MCP2551/TJA1050 CAN transceiver within 50mm of the RC6/RC7 pins. The crystal or resonator must be within 1cm of OSC1/OSC2 with ground flood underneath, and AVDD/VSS pairs should be star-routed back to the regulator. Add an ESD diode (e.g., PESD1CAN) and common-mode choke on the bus connector for ISO 7637-2 immunity.
Estimated: The PIC18F2580-I/SP in 28-pin SPDIP is rated for up to 1W at +70C ambient and +85C industrial operation. Active power at 5V/40MHz is approximately 16mA * 5V = 80mW, well within limits. The thermal resistance theta_JA for SPDIP-28 is approximately 70 C/W; ambient below +85C keeps junction below +90C (estimated: Tj = 85C + 70*0.08 = +91C), comfortably below the +150C maximum. For sealed enclosures or stacked boards, derate or use a thermal via to a copper pour.
Do not assume the PIC18F2580-I/SP runs on 3.3V - it requires 4.2V minimum. Watch out for the BRG (baud-rate generator) setting in ECAN: the formula is BRP_val = (Fosc / (2 * Fbaud * (Sync_Seg + Prop_Seg + Phase_Seg1 + Phase_Seg2))) - 1, and rounding errors can produce bit-rate drift above 0.5%, which CAN controllers reject. Always configure the CONFIG1H oscillator bits for the desired clock mode (HS, XT, EC) before locking the MCU, or the part may fail to start after programming.
The ECAN bus requires termination resistors of 120 ohms +/- 5% at both ends of the trunk, with split termination (two 60-ohm resistors with a 10nF capacitor to ground) to improve EMC. Keep the bus common-mode voltage between -2V and +7V. If using the ECAN module in listen-only mode for sniffer applications, configure both acceptance masks to 0xFF and filters to 0x00, then poll the receive buffer rather than enabling interrupts.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC18F2580-E/SP for extended-temperature applications. Conflict-minerals compliant per Microchip policy.
