PIC18LF2580T-I/SO - 8-bit 40MHz 32KB Flash MCU | Microchip
MPN: PIC18LF2580T-I/SO ✓ Hoạt độngPIC18LF2580T-I/SO Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), working memory (RAM), and peripherals. The PIC18 family belongs to Microchip's 8-bit MCU portfolio, which sits within the broader category of embedded microcontrollers. Within the Microchip ecosystem, PIC18 occupies the mid-range tier between baseline PIC10/12/16 and the 16-bit PIC24/dsPIC33 families. Designers select PIC18 when they need deterministic performance, integrated peripherals (CAN, ADC, PWM), and the longevity of the MPLAB toolchain without moving to a 32-bit ARM Cortex-M architecture.
Key features of the PIC18LF2580T-I/SO include 1.5 KB of RAM and 256 bytes of EEPROM data memory, an 8-channel 10-bit Analog-to-Digital Converter (ADC), an Enhanced CAN module (ECAN) supporting CAN 2.0B, three timers (Timer0/1/2/3), two USART modules, an MSSP for SPI/I2C, and a 10-bit ADC. The 'T' suffix in the part number denotes Tape-and-Reel packaging for high-volume SMT assembly, and the 'I' indicates the industrial operating temperature range of -40°C to +85°C.
Architecturally, the LF2580 combines the PIC18 Harvard-style RISC CPU (75 instructions, hardware multiplier) with on-chip debug support via ICSP (In-Circuit Serial Programming). The CAN module provides hardware message filtering and acceptance filtering, hardware acceptance masks, and double-buffered FIFOs. The ADC can be triggered by CCP timers or software, supporting low-power sleep conversion. The device operates from a single 2.0 V - 5.5 V supply and includes a low-power Sleep mode drawing micro-ampere currents.
Typical applications include CAN-enabled industrial sensor nodes, automotive body and powertrain sub-systems at module-level nodes, HVAC controller boards, building automation gateways, CAN-to-UART bridges, OBD-II diagnostic tools, LED lighting control with CAN signaling, and standalone CAN protocol repeaters. Designers also deploy it in retrofit BMS (Battery Management System) satellite-cell controllers communicating over CAN-bus.
When designing with this part, ensure that the CAN bus is terminated with a 120 Ω resistor at each end of the bus segment, and that the MCP2551 or similar CAN transceiver is correctly DC-biased. The MCU's HF-INTOSC (internal oscillator) is factory-calibrated to ±1 % across voltage and temperature, allowing designs without an external crystal for cost-sensitive layouts.
This page synthesizes distributor pricing from DigiKey and Mouser, drop-in compatible alternatives drawn from the PIC18LF2580/2480 and PIC18F2580/2480 families, and practical design notes covering CAN bus termination and ICSP programming that are not duplicated in the manufacturer's datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF2580T-I/SO — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18LF2580T-I/SO (cùng hình factor và footprint) — khác nhau ở Core, Package, Mounting Type, Timers, Operating Temperature.
PIC18LF2580-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F2580T-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF2480T-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF2585T-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF2580T-I/SO Tỷ lệ tối đa & tính chất điện
| Core | PIC18 (8-bit RISC) |
| Tần số xung maksimum | 40 MHz |
| Instruction Set Width | 16-bit (RISC) |
| Program Memory (Flash) | 32 KB (16K x 16 words) |
| RAM | 1.5 KB |
| EEPROM | 256 bytes |
| Supply Voltage Range (LF) | 2.0 V to 5.5 V |
| I/O Pins | 34 (digital I/O) |
| ADC | 10-bit, 8 channels |
| CAN Module | ECAN (CAN 2.0B active) |
| Timers | 4 (Timer0/1/2/3) |
| Communication Peripherals | 2x USART, 1x MSSP (SPI/I2C), 1x ECAN |
| Nhiệt độ hoạt động | -40 °C to +85 °C (Industrial) |
| Hộp | 28-SOIC (0.295", 7.5 mm width) |
| Kiểu lắp đặt | Surface Mount (Tape & Reel - T suffix) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF2580T-I/SO
| Chân 1 | MCLR/VPP/RE3 — Master Clear (reset) input or ICSP programming voltage; also digital input RE3 |
| Chân 2 | RA0/AN0 — Digital I/O RA0 or analog input AN0 |
| Chân 3 | RA1/AN1 — Digital I/O RA1 or analog input AN1 |
| Chân 4 | RA2/AN2/VREF- — Digital I/O RA2, AN2, or ADC negative reference |
| Chân 5 | RA3/AN3/VREF+ — Digital I/O RA3, AN3, or ADC positive reference |
| Chân 6 | RA4/T0CKI — Digital I/O RA4 or Timer0 clock input |
| Chân 7 | RA5/AN4/SS — Digital I/O RA5, AN4, or SPI Slave Select |
| Chân 8 | VSS — Ground |
| Chân 9 | OSC1/CLKI/RA7 — Crystal oscillator input or digital I/O RA7 |
| Chân 10 | OSC2/CLKO/RA6 — Crystal oscillator output or digital I/O RA6 |
| Chân 11 | RC0/T1OSO/T1CKI — Digital I/O RC0 or Timer1 oscillator input |
| Chân 12 | RC1/T1OSI/CCP2 — Digital I/O RC1 or Capture/Compare PWM2 |
| Chân 13 | RC2/CCP1 — Digital I/O RC2 or Capture/Compare PWM1 |
| Chân 14 | RC3/SCK/SCL — Digital I/O RC3, SPI clock, or I2C clock |
| Chân 15 | RC4/SDI/SDA — Digital I/O RC4, SPI data input, or I2C data |
| Chân 16 | RC5/SDO — Digital I/O RC5 or SPI data output |
| Chân 17 | RC6/TX/CK — USART1 transmit or USART synchronous clock |
| Chân 18 | RC7/RX/DT — USART1 receive or USART synchronous data |
| Chân 19 | VSS — Ground |
| Chân 20 | VDD — Positive supply voltage (2.0 V - 5.5 V) |
| Chân 21 | RB0/INT0 — Digital I/O RB0 or external interrupt 0 |
| Chân 22 | RB1/INT1 — Digital I/O RB1 or external interrupt 1 |
| Chân 23 | RB2/INT2 — Digital I/O RB2 or external interrupt 2 |
| Chân 24 | RB3/CCP2 — Digital I/O RB3 or PWM output |
| Chân 25 | RB4 — Digital I/O RB4 (interrupt-on-change) |
| Chân 26 | RB5 — Digital I/O RB5 (interrupt-on-change) |
| Chân 27 | RB6/PGD — Digital I/O RB6 or ICSP data |
| Chân 28 | RB7/PGC — Digital I/O RB7 or ICSP clock |
Ứng dụng tiêu biểu
PIC18LF2580T-I/SO phù hợp cho 6 Áp dụngs: CAN-Enabled Industrial Sensor Hub, OBD-II Automotive Diagnostic Tool, Building Automation / HVAC Gateway, Industrial LED Lighting with CAN Signaling, CAN-to-UART Protocol Bridge, Battery-Management Satellite (BMS) Cell Board.
CAN-Enabled Industrial Sensor Hub
The PIC18LF2580T-I/SO is well-suited for industrial sensor hubs because its integrated Enhanced CAN (ECAN) module with hardware acceptance filtering handles multi-node CAN-bus traffic at 40 MHz without software overhead. The 10-bit, 8-channel ADC scans analog sensor inputs while two USARTs add RS-232/RS-485 debugging channels. With 32 KB Flash holding the CANopen or Modbus-RTU stack plus application code, and 2.0 V - 5.5 V operation permitting battery-backed operation, it serves in 24 V industrial racking with on-board 5 V regulator. A 120 Ω termination resistor at the bus is mandatory per ISO 11898.
Được đề xuất
OBD-II Automotive Diagnostic Tool
The PIC18LF2580T-I/SO is widely used in OBD-II diagnostic tools because it includes the CAN 2.0B engine that interfaces directly to the vehicle CAN-H/CAN-L lines via an MCP2515 or MCP2551 transceiver. The 32 KB Flash holds the SAE J1979 decoder plus proprietary-protocol parsing, while 1.5 KB RAM stores live PIDs. Its 2.0 V - 5.5 V range simplifies battery operation (a single Li-Ion cell feeding through a boost regulator). For garage units, the industrial -40 °C to +85 °C range handles cold-start and underhood temperatures.
Được đề xuất
Building Automation / HVAC Gateway
Building-automation gateways that convert between BACnet/Modbus CAN and IP networks benefit from the PIC18LF2580T-I/SO's dual USARTs (one for RS-485 Modbus, one for the backhaul) and CAN engine (for BMS traffic). Its 256-byte EEPROM stores configuration parameters (node address, baud rate, calibration) that persist across power cycles. With an industrial temperature rating and a wide 2.0 V - 5.5 V supply range, the part handles rooftop HVAC controller environments. 32 KB Flash fits lightweight BACnet/IP translation firmware with margin for future feature additions.
Được đề xuất
Industrial LED Lighting with CAN Signaling
Architectural and warehouse LED lighting that uses CAN as the lighting-control protocol can use the PIC18LF2580T-I/SO as the per-fixture controller. Its 8-channel 10-bit ADC samples dimming feedback, the ECCP/PWM module drives constant-current LED drivers, and the ECAN engine receives DMX-over-CAN style commands. The 1.5 KB RAM holds the PID controller state for thermal-foldback. Industrial-grade temperature range avoids derating in ceiling-mounted fixtures, and 2.0 V - 5.5 V operation permits 24 V or 48 V string-driver configurations.
Được đề xuất
CAN-to-UART Protocol Bridge
The PIC18LF2580T-I/SO is ideal for CAN-to-UART protocol bridges (e.g., telematics boxes, asset trackers) because it integrates CAN and two USARTs on a single chip. The CAN engine handles bus filtering while USART1 transparently forwards frames to a 4G/GSM modem; USART2 is for GPS or auxiliary sensors. 32 KB Flash holds the bridge daemon, 256-byte EEPROM holds the routing table, and the 40 MHz core handles up to 500 kbps CAN traffic with low latency. Industrial temperature rating supports outdoor telematics enclosures.
Được đề xuất
Battery-Management Satellite (BMS) Cell Board
Lithium battery management satellite boards frequently use the PIC18LF2580T-I/SO for cell voltage/temperature monitoring over CAN. Eight ADC channels cover up to 8 cell voltages, the ECAN engine enables daisy-chained CAN-bus balancing boards, and the 2.0 V - 5.5 V supply range supports 4-8 cell battery stacks. Its 32 KB Flash is ample for the BMS state machine, 256-byte EEPROM holds cell-balance calibration, and the deep sleep mode conserves quiescent current when not actively balancing. Industrial grade -40 °C to +85 °C handles wide thermal swings in battery packs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF2580T-I/SO — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18LF2580-I/SO | PIC18F2580T-I/SO | PIC18LF2480T-I/SO | PIC18LF2585T-I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (0.295") | 28-SOIC (0.295") - same | 28-SOIC (0.295") - same | 28-SOIC (0.295") - same | 28-SOIC (0.295") - same |
| Supply Voltage Range | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V - same | 4.2 V to 5.5 V (F variant) | 2.0 V to 5.5 V - same | 2.0 V to 5.5 V - same |
| CAN Module | ECAN (CAN 2.0B) | ECAN - same | ECAN - same | ECAN - same | ECAN - same |
| Maximum Clock Frequency | 40 MHz | 40 MHz - same | 40 MHz - same | 40 MHz - same | 40 MHz - same |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C - same | -40 °C to +85 °C - same | -40 °C to +85 °C - same | -40 °C to +85 °C - same |
| Reel / Tube Packaging | Tape & Reel (T) | Tube (no T) | Tape & Reel - same | Tape & Reel - same | Tape & Reel - same |
Bảo phân biệt quan trọng
- Wider supply voltage range (2.0 V - 5.5 V) than non-LF equivalent (vsPIC18F2580T-I/SO)
- Industrial temperature range for harsh environments (vsStandard PIC18LF2580 variants without 'I' suffix)
- Integrated Enhanced CAN module (rare for 8-bit MCUs) (vsPIC18F2550 (no CAN module))
Ghi chú thiết kế
Place a 120 Ω termination resistor at each end of the CAN-bus segment per ISO 11898. The MCP2551 or MCP2561 transceiver sits as close to the MCU's CANTX/CANRX pins (RC6/RC7) as possible, with the bus traces impedance-matched to 120 Ω differential. Keep the MCU's GND trace contiguous under the analog (ADC) and CAN sections to avoid switching noise coupling into ADC readings.
The PIC18LF2580T-I/SO includes a 2.0 V - 5.5 V supply range but be aware that ADC accuracy degrades below 3.0 V due to reference scaling. Add a 100 nF decoupling capacitor as close to VDD (pin 20) as possible, plus a 10 µF bulk capacitor near the regulator. For battery-backed designs, the MCU's Sleep mode draws microampere currents, allowing long-term data retention in the 256-byte EEPROM.
Do not confuse the 'LF' (low-voltage) prefix with the 'F' (Flash) prefix when ordering - PIC18LF2580 supports 2.0 V - 5.5 V while PIC18F2580 requires 4.2 V. Also note that the 'T' suffix in PIC18LF2580T-I/SO designates Tape and Reel packaging, not a different silicon. For programming, the ICSP pins (RB6/RB7) require a 13V VPP pulse on MCLR; use the Microchip PICkit 3 or MPLAB ICD 3 programmer, not a generic ISP box.
The CAN bus differential pair (CANH/CANL) requires twisted-pair cable with 120 Ω characteristic impedance. Use a transceiver like MCP2551 with a common-mode choke for industrial EMI environments. For long bus segments (>40 m), reduce the baud rate to 125 kbps to limit signal reflections. The ECAN module's hardware acceptance filtering reduces software overhead - configure the acceptance masks for efficient message routing.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial-grade temperature range only - NOT AEC-Q100 qualified. For automotive AEC-Q100 applications, choose PIC18F2580-I/SO automotive-grade variant.
