PIC18F2580T-I/SO - 8-Bit 40MHz MCU, 32KB Flash, ECAN, 28-SOIC | Microchip
MPN: PIC18F2580T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.1 | $510.00 |
| 500 | $4.5 | $2,250.00 |
| 1,000 | $4 | $4,000.00 |
| 2,600 | $3.47 | $9,022.00 |
PIC18F2580T-I/SO Overview
An 8-bit microcontroller (MCU) is a programmable processor built around an 8-bit data path, common ALU registers and accumulator architecture, designed for embedded control. PIC18F devices sit in Microchip's PIC family hierarchy above baseline PIC10/12/16 and below the 16-bit dsPIC and PIC24/32 lines; they target general-purpose I/O expansion, sensor interfacing, and small protocol bridging where code density and deterministic interrupt latency matter more than raw throughput.
Key features of the PIC18F2580T-I/SO include 32KB (16K x 16) Flash, 1536 bytes SRAM, 256 bytes EEPROM, an internal 10-bit ADC with up to 8 channels, four timers, two capture/compare/PWM modules, two USART ports, MSSP (SPI/I2C), and the integrated ECAN module supporting CAN 2.0B active/passive. nanoWatt Technology provides managed power modes (Run, Idle, Sleep) with down to microamp-level standby currents for battery-aware designs. A built-in ICD debugger interface lets the MPLAB ICD 5 program and debug the part in-circuit.
The Harvard architecture separates program (Flash) and data (SRAM) buses, allowing the CPU and the ECAN peripheral to transact independently; this is why PIC18F devices are well matched to CAN-bus nodes, sensor fan-out, and small motor-control loops. The 40 MHz oscillator corresponds to a 10 MIPS (million instructions per second) rating, which is generally enough for CAN arbitration, periodic ADC scanning, and character LCD refresh on the same chip.
Typical applications include industrial automation and sensor nodes, automotive body and CAN-bus networks, HVAC fan/pump controllers, instrumentation and metering, home appliances, and any general-purpose 5V embedded controller requiring CAN. The wide -40C to +85C operating range and robust peripheral mix also suit transportation, security panels, and lighting controllers.
When designing with this part, pay attention to the 28-pin SOIC pinout: several functions are multiplexed, so the configuration word and PPS selection must be locked before firmware is finalized. Engineers should also budget the on-chip regulator headroom and consider the 10-bit ADC acquisition time when driving high-impedance sensors, since the S/H cap takes a fraction of a microsecond to settle.
This page synthesizes verified distributor pricing from DigiKey, Mouser, LCSC and Octopart, alongside parametric drop-in alternatives and practical design notes that complement (do not replace) the manufacturer datasheet and the PIC18F2580 datasheet family reference manual.
Drop-in alternatives for PIC18F2580T-I/SO — 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 PIC18F2580T-I/SO (same form factor and footprint) — differing in Operating Temperature, Package, Program Memory (Flash), ADC, MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F2580-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F2480-I/SO
✅ Drop-In✓ In Stock
$4.13 / Unit
View Datasheet →PIC18F2580-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F2510-I/SO
✅ Drop-In✓ In Stock
$2.9 / Unit
View Datasheet →PIC18F25K50-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F2580T-I/SO Maximum Ratings & Electrical Characteristics
| Family | PIC18F |
| Core | 8-bit PIC18 Harvard |
| Program Memory (Flash) | 32 KB (16K x 16) |
| RAM | 1536 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 40 MHz (10 MIPS) |
| Supply Voltage | 4.2 V to 5.5 V |
| Operating Temperature | -40 C to +85 C |
| I/O Pins | 25 |
| ADC | 10-bit, up to 8 channels |
| Timers | 4 (Timer0/1/2/3) |
| CCP Modules | 2 |
| Communication | ECAN (CAN 2.0B), 2x USART (LIN/IrDA), MSSP (SPI/I2C) |
| Package | 28-SOIC (SO), 7.50 mm body width |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited floor life at <30 C / 85 % RH, JEDEC J-STD-020) |
| RoHS Status | Compliant |
| In-Circuit Debug | ICSP via MPLAB ICD 5 |
PIC18F2580T-I/SO Pin Configuration
| Pin 1 | RA0/AN0 — Bidirectional I/O / Analog input channel 0 |
| Pin 2 | RA1/AN1 — Bidirectional I/O / Analog input channel 1 |
| Pin 3 | RA2/AN2 — Bidirectional I/O / Analog input channel 2 / VREF- |
| Pin 4 | RA3/AN3 — Bidirectional I/O / Analog input channel 3 / VREF+ |
| Pin 5 | RA4 — Bidirectional I/O / Timer0 clock input |
| Pin 6 | RA5 — Bidirectional I/O / Slave select for MSSP / ADC input |
| Pin 7 | RA6 — Bidirectional I/O / Oscillator output |
| Pin 8 | RA7 — Bidirectional I/O / Oscillator input |
| Pin 9 | OSC1/CLKIN — External oscillator input |
| Pin 10 | OSC2/CLKOUT — External oscillator output |
| Pin 11 | RC0/T1OSO — Digital I/O / Timer1 oscillator output |
| Pin 12 | RC1/T1OSI — Digital I/O / Timer1 oscillator input |
| Pin 13 | RC2/CCP1 — Digital I/O / Capture/Compare/PWM1 output |
| Pin 14 | RC3 — Digital I/O |
| Pin 15 | RC4 — Digital I/O |
| Pin 16 | RC5 — Digital I/O |
| Pin 17 | RC6/TX/CK — EUSART TX / Synchronous clock |
| Pin 18 | RC7/RX/DT — EUSART RX / Synchronous data |
| Pin 19 | VSS — Digital ground |
| Pin 20 | VDD — Positive supply (4.2 V to 5.5 V) |
| 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 / CAN RX (via PPS) |
| Pin 24 | RB3/INT3 — Digital I/O / External interrupt 3 / CAN TX (via PPS) |
| Pin 25 | RB4 — Digital I/O / ICSP programming clock |
| Pin 26 | RB5 — Digital I/O / ICSP programming data |
| Pin 27 | RB6 — Digital I/O / ICSP programming clock |
| Pin 28 | RB7 — Digital I/O / ICSP programming data |
Typical Applications
PIC18F2580T-I/SO is suitable for 7 applications: Industrial CAN-bus Sensor Nodes, Automotive Body & CAN-bus Networks, HVAC Fan & Pump Controllers, Instrumentation & Energy Metering, Home Appliances & White Goods, Security & Access Control Panels, Lighting & LED Driver Controllers.
Industrial CAN-bus Sensor Nodes
The PIC18F2580T-I/SO is a strong fit for industrial CAN-bus sensor nodes because it integrates the ECAN 2.0B engine (active and passive), eight acceptance filters, and a 10 MIPS 8-bit core that is sufficient for periodic ADC scanning and CAN arbitration on the same chip. Its 32 KB Flash holds a Sensored communication profile or CiA 401 stack with sensors on the bus. The 4.2-5.5 V supply matches common 5 V industrial rails, and the 28-SOIC pin count fits densely populated CAN-bus boards. Designers add a TJA1050 or MCP2551 transceiver on the same PCB and 120 ohm termination, with optional isolation via ADM3053 for harsh industrial sites.
Recommended
Automotive Body & CAN-bus Networks
For automotive body and CAN-bus networks such as door modules, climate controls, seat controllers, and HVAC actuators, the PIC18F2580T-I/SO provides the right combination of ECAN, 5 V-tolerant I/O, and a compact 28-SOIC footprint that survives under-hood environments. The -40 C to +85 C industrial temperature grade covers cabin installations, while the 32 KB Flash accommodates sub-manufacturer CAN profiles (CCP, UDS) plus the boot-loader. Many ECUs pair it with a TJA1042 or MCP2561 high-speed CAN transceiver and an LM7805 LDO pre-regulator. For under-hood / engine-bay placements upgrade to PIC18F2580-E/SO (extended -40 to +125 C) when available.
Recommended
HVAC Fan & Pump Controllers
HVAC fan and pump controllers benefit from the PIC18F2580T-I/SO's two CCP (Capture/Compare/PWM) modules for motor commutation or PWM-driven FET outputs, plus four hardware timers for periodic event scheduling. The 25 I/O lines support relays, triac drivers, contactors, thermistor inputs (via the 10-bit ADC), and an isolated 5 V supply. The 32 KB Flash supports vendor-specific PID loops, while ECAN ties the unit into a building automation cluster. Standby current under nanoWatt Technology Sleep mode is well under a milliamp, allowing continuous mains-powered designs to meet standby regulations. Watch the ADC acquisition time when driving 10 kohm thermistors - add a 100 nF bypass at AVDD.
Recommended
Instrumentation & Energy Metering
The PIC18F2580T-I/SO is well matched to instrumentation and energy metering tasks because the 10-bit ADC together with the CCP modules can sample voltage and current channels, while ECAN or USART/485 handles field-bus reporting to data concentrators. Flash size accommodates calibration tables for line compensation, while EEPROM (256 bytes) stores configuration registers that survive power loss. Its 40 MHz core executes scaling and RMS calculations in real time at the converter sample rate. Pair with a CS5490 energy-meter front-end or a discrete CT/voltage-divider front-end, and consider an isolated USART (ADM3251E) to bridge the MCU to the building's 485/USB gateway.
Recommended
Home Appliances & White Goods
In home appliances such as washing machines, microwave ovens, dishwashers, and induction cooktops, the PIC18F2580T-I/SO provides 32 KB of Flash for user-interface firmware (keypads, displays, Eco / Standard modes), plus the 10-bit ADC for temperature, water level, and power monitoring. ECAN or the second USART (LIN) interconnects distributed nodes in high-end appliances, while the CCP/PWM modules drive solenoids, triacs, and BLDC motors. Its -40 C to +85 C rating suits oven-adjacent modules, and the 5 V operation plus 28-SOIC simplify layout on a 35 micron copper 2-layer PCB. Reinforce the design with TPD1E04U04 ESD protection on every external connector pin and an optocoupler on AC-coupled inputs.
Recommended
Security & Access Control Panels
Security and access control panels (intrusion alarms, keypads, badge readers) use the PIC18F2580T-I/SO to manage sensors, signaling devices, and GSM / Ethernet / CAN communication without a higher-cost MCU. The 25 I/O pins handle multiple loop inputs, sirens, keypads, and a real-time-clock battery backup, while ECAN/485 networking ties together larger properties. EEPROM (256 bytes) preserves the panel's configuration after a brownout, and nanoWatt Sleep keeps standby draws well under the rules' 100 mW limit. A standard front-end is a simple battery-backed 5 V LDO (MCP1700) plus an external AT24C256 EEPROM for additional event logging. Add a TPL750 or TPD2E001 at any external connector to clamp transients.
Recommended
Lighting & LED Driver Controllers
Lighting and LED driver controllers benefit from the PIC18F2580T-I/SO's two CCP modules for PWM dimming, multi-channel LED control, and animated-lighting effects via DMX / SPI LED drivers. The 10-bit ADC reads analog sliders or 4-20 mA industrial current-loop inputs, while 32 KB Flash holds fade / scene logic. ECAN or RS-485 lets the controller integrate into a building lighting network. Pair with a TLC5947 or WS2811 / WS2812 driver chain and an isolated AC/DC front end. Be sure to clamp the 5 V rail with a TVS on dimmer control inputs since long cable runs pick up significant common-mode transients.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F2580T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F2580-I/SO | PIC18F2480-I/SO | PIC18F2580-E/SO | PIC18F2510-I/SO | PIC18F25K50-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Program Memory (Flash) | 32 KB | 32 KB | 16 KB (-50 %) | 32 KB | 49 KB (+53 %) | 32 KB |
| RAM | 1536 bytes | 1536 bytes | 768 bytes (-50 %) | 1536 bytes | 2048 bytes (+33 %) | 2048 bytes (+33 %) |
| Operating 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 | 1.8 V to 5.5 V (broader) |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (Extended) | -40 C to +85 C | -40 C to +85 C |
| ECAN Module | Yes (CAN 2.0B) | Yes | Yes | Yes | No | No |
| USB Module | No | No | No | No | No | Yes (Full-Speed USB 2.0) |
| ADC Resolution / Channels | 10-bit / 8 ch | 10-bit / 8 ch | 10-bit / 8 ch | 10-bit / 8 ch | 10-bit / 8 ch | 10-bit / 14 ch (more channels) |
Key Differentiators
- Lowest-cost Microchip 8-bit MCU with ECAN in 28-SOIC (vs PIC18F4680 (44-TQFP))
- Pin-for-pin alternative drops CAN in favor of full-speed USB (vs PIC18F25K50-I/SO (28-SOIC))
- Tube vs tape-and-reel pick keeps inventory flexible (vs PIC18F2580-I/SO (tube))
- Industrial -40/+85 C grade with extended -40/+125 C upgrade path (vs PIC18F2580-E/SO (28-SOIC, -40 to +125 C))
Design Notes
Decouple the 5 V supply aggressively. Place a 100 nF X7R ceramic on each VDD/VSS pair as close as possible, with a bulk 4.7 to 10 microfarad tantalum or aluminum electrolytic within 1 cm. The PIC18F2580T-I/SO does not include an internal regulator, so any noise on VDD shows up as ADC noise and CAN-bus errors. For CAN-bus nodes, prefer an LC pi filter upstream of the MCP2551 to meet CISPR 11 radiated emissions.
Route the ECAN signals (CANH, CANL) as a 120-ohm differential pair with controlled 90 ohm differential impedance, avoiding stubs. Place the MCP2551 transceiver close to the bus connector with TVS diodes (e.g. PESD1CAN) at the bus terminals. The ICSP pins (RB6, RB7, MCLR) must be brought to test points for in-circuit debug; do not put series capacitors on those pins. A four-layer PCB with a continuous ground plane is strongly recommended for CAN-bus designs.
Configuration words must be set explicitly in firmware before enabling the device - especially the oscillator mode (HS vs EC), MCLR enable, brown-out voltage, and watchdog timer state. Forgetting to set the WDTEN bit can leave the part in a slow-start mode in production. Remember that PIC18F2580's CAN RX/TX are on RB2/RB3 by default in PPS: redesigning the PCB without considering this will break CAN communication. The 28-SOIC footprint is mechanically stable but the SOIC landing pattern is less solder-robust than LQFP - use extended pads and a 0.4 mm stencil aperture for the sides.
Compliance Information
RoHS-compliant per Microchip product page (Lead-free / Pb-free finish); REACH compliant per EU distributors. Not AEC-Q100 qualified - for automotive grade, choose PIC18Fxxx-I/xxx or PIC18Fxxx-E/xxx extended variants per Microchip's automotive product line.
