PIC18F4585-I/PT - 8-bit MCU 48KB Flash ECAN 44-TQFP | Microchip
MPN: PIC18F4585-I/PT ✓ Hoạt độngPIC18F4585-I/PT Tóm tắt
An 8-bit microcontroller is a single-chip computer built around an 8-bit data path, optimized for deterministic real-time control with low cost and low power. The PIC18 family is Microchip's enhanced 8-bit line, positioned above baseline PIC10/12/16 parts in code density, peripheral count, and processing power; it sits within the broader taxonomy of microcontroller -> embedded controller -> semiconductor IC. The "-I" suffix indicates the industrial operating temperature range of -40C to +85C, suitable for non-automotive industrial and commercial deployments.
Key specifications include 48 KB (24K x 16) of self-programmable Flash, 3,328 bytes of SRAM, 1 KB of EEPROM, 36 digital I/O pins, an integrated 10-bit ADC with up to 13 input channels, two capture/compare/PWM modules, two USART ports, an SPI interface, an I2C interface, the ECAN controller, and nanoWatt power management for low-power sleep modes. The wide 4.2 V to 5.5 V supply range is consistent with 5 V logic systems, and the 44-TQFP package offers manageable thermal performance with theta_JA around 50 C/W.
The PIC18F4585 uses Microchip's enhanced Harvard RISC architecture with 16-bit instructions and 8-bit data, providing a C-friendly development environment through the MPLAB X IDE and XC8 compiler. The ECAN peripheral implements CAN 2.0B active with 16 acceptance filters and three transmit buffers, making this part well matched to industrial CAN nodes and automotive-style network slaves running below full automotive qualification.
Typical applications include industrial CAN node controllers, building automation sensor nodes, HVAC control boards, embedded data loggers with CAN bridge capability, and human-machine interface (HMI) panels. Designers also deploy this MCU in aftermarket automotive telematics and CAN-to-UART gateways that do not require AEC-Q100 automotive-grade qualification.
For robust operation, ensure that the MCLR pin is properly pulled high through a resistor, supply decoupling capacitors are placed within 5 mm of VDD/VSS pairs, and the ECAN bus is terminated with 120 ohm resistors at both ends of the bus. Programs that rely on the ECAN module should verify bit timing configuration against the chosen baud rate using the CAN baud rate calculator in MPLAB.
This page consolidates distributor pricing, drop-in compatible PIC18F alternatives, ECAN configuration guidance, and design notes not found in the manufacturer datasheet, offering engineering value beyond raw specifications.
Bộ thay thế dễ dàng lắp đặt cho PIC18F4585-I/PT — 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 PIC18F4585-I/PT (cùng hình factor và footprint) — khác nhau ở Package, Timers, Operating Temperature, ADC, Program Memory (Flash).
PIC18F4580-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F4480-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F4680-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F448-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F4455-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F4550-I/PT
✅ Drop-In✓ Còn hàng
$4.95 / Đơn vị
Xem tài liệu →DSPIC33FJ64MC804-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F4585-I/PT Tỷ lệ tối đa & tính chất điện
| Product Family | PIC18F |
| Core Architecture | 8-bit Enhanced Harvard RISC |
| Program Memory (Flash) | 48 KB (24K x 16) |
| Data RAM | 3,328 bytes |
| Data EEPROM | 1,024 bytes |
| Maximum CPU Clock | 40 MHz |
| Instruction Cycle | 200 ns (at 40 MHz FOSC) |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| Digital I/O Pins | 36 |
| ADC | 10-bit, up to 13 channels |
| Capture/Compare/PWM | 2 ECCP modules |
| USART | 2 channels (with LIN support) |
| SPI | 1 master/slave |
| I2C (MSSP) | 1 master/slave |
| CAN | ECAN 2.0B active, 16 acceptance filters |
| Timers | 4 (Timer0/1/2/3) |
| Nhiệt độ hoạt động | -40C to +85C (industrial, "-I") |
| Hộp | 44-pin TQFP (PT) 10x10 mm |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (per JEDEC J-STD-020) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC18F4585-I/PT
| Chân 1 | RC2/CCP1 — Digital I/O / CCP1 PWM output |
| Chân 2 | RC3/SCK/SCL — Digital I/O / SPI SCK / I2C SCL |
| Chân 3 | RC4/SDI/SDA — Digital I/O / SPI SDI / I2C SDA |
| Chân 4 | RC5/SDO — Digital I/O / SPI SDO |
| Chân 5 | RC6/TX/CK — Digital I/O / USART TX / Clock |
| Chân 6 | RC7/RX/DT — Digital I/O / USART RX / Data |
| Chân 7 | RD0/PSP0/C1IN+ — Digital I/O / Parallel Slave Port / Comparator input |
| Chân 8 | RD1/PSP1/C1IN- — Digital I/O / Parallel Slave Port / Comparator input |
| Chân 9 | RD2/PSP2/C2IN+ — Digital I/O / Parallel Slave Port / Comparator input |
| Chân 10 | RD3/PSP3/C2IN- — Digital I/O / Parallel Slave Port / Comparator input |
| Chân 11 | RC0/T1OSO/T13CKI — Digital I/O / Timer1 oscillator / Counter input |
| Chân 12 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator / CCP2 |
| Chân 13 | RC2/CCP1 — Digital I/O / CCP1 (alternate) |
| Chân 14 | VSS — Ground reference |
| Chân 15 | VDD — Positive supply voltage (4.2V-5.5V) |
| Chân 16 | RE0/RD/AN5 — Digital I/O / Read control / ADC input |
| Chân 17 | RE1/WR/AN6 — Digital I/O / Write control / ADC input |
| Chân 18 | RE2/CS/AN7 — Digital I/O / Chip select / ADC input |
| Chân 19 | AVDD — Analog supply voltage (connect to VDD) |
| Chân 20 | AVSS — Analog ground (connect to VSS) |
| Chân 21 | OSC1/CLKI/RA7 — Crystal oscillator input / External clock / Digital I/O |
| Chân 22 | OSC2/CLKO/RA6 — Crystal oscillator output / Clock output / Digital I/O |
| Chân 23 | RA0/AN0/CVREF — Digital I/O / ADC input / Comparator reference |
| Chân 24 | RA1/AN1 — Digital I/O / ADC input |
| Chân 25 | RA2/AN2/VREF- — Digital I/O / ADC input / Voltage reference negative |
| Chân 26 | RA3/AN3/VREF+ — Digital I/O / ADC input / Voltage reference positive |
| Chân 27 | RA4/T0CKI/C1OUT — Digital I/O / Timer0 clock / Comparator output |
| Chân 28 | RA5/AN4/SS/HLVDIN/C2OUT — Digital I/O / ADC input / SPI SS / HLVD / Comparator output |
| Chân 29 | VSS — Ground reference |
| Chân 30 | VDD — Positive supply voltage (4.2V-5.5V) |
| Chân 31 | RB0/INT0/AN12/FLT0 — Digital I/O / External interrupt / ADC input / PWM fault input |
| Chân 32 | RB1/INT1/AN10 — Digital I/O / External interrupt / ADC input |
| Chân 33 | RB2/INT2/AN8 — Digital I/O / External interrupt / ADC input |
| Chân 34 | RB3/INT3/AN9/CCP2 — Digital I/O / External interrupt / ADC input / CCP2 |
| Chân 35 | RB4/KBI0/AN11 — Digital I/O / Keyboard interrupt / ADC input |
| Chân 36 | RB5/KBI1/PGM — Digital I/O / Keyboard interrupt / LVP program |
| Chân 37 | RB6/KBI2/PGC — Digital I/O / Keyboard interrupt / ICSP clock |
| Chân 38 | RB7/KBI3/PGD — Digital I/O / Keyboard interrupt / ICSP data |
| Chân 39 | CANTX — ECAN transmit output |
| Chân 40 | CANRX — ECAN receive input |
| Chân 41 | RD4/PSP4/ECCP1 — Digital I/O / Parallel Slave Port / ECCP1 |
| Chân 42 | RD5/PSP5 — Digital I/O / Parallel Slave Port |
| Chân 43 | RD6/PSP6 — Digital I/O / Parallel Slave Port |
| Chân 44 | RD7/PSP7 — Digital I/O / Parallel Slave Port |
Ứng dụng tiêu biểu
PIC18F4585-I/PT phù hợp cho 6 Áp dụngs: Industrial CAN Node Controller, Building Automation Sensor Node, HVAC Control Board, Embedded Data Logger with CAN Bridge, HMI Control Panel, Aftermarket Automotive Telematics.
Industrial CAN Node Controller
The PIC18F4585-I/PT is well-suited for industrial CAN node controllers because its integrated ECAN 2.0B active module eliminates the need for an external CAN controller, reducing PCB footprint and BOM cost. The 48 KB Flash provides ample space for CANOpen or DeviceNet protocol stacks, while the 36 digital I/O pins drive sensor inputs and actuator outputs directly. At 40 MHz CPU clock, the part comfortably handles 1 Mbps CAN bus traffic with deterministic latency, and the industrial -40C to +85C temperature grade supports factory-floor deployments. Compared with PIC18F4580-I/PT, the integrated ECAN removes one external IC and simplifies PCB layout.
Được đề xuất
Building Automation Sensor Node
In building automation, the PIC18F4585-I/PT acts as the central controller in sensor nodes that communicate over CAN or RS-485 networks. Its nanoWatt power management modes enable low standby current for battery or energy-harvested sensors, while the 10-bit ADC handles temperature, humidity, and occupancy sensor inputs. The 36 I/O pins support multiple sensor interfaces, and the 5 V operating range matches industrial sensor power rails. Designers can leverage the MPLAB X IDE and XC8 compiler to implement BACnet or Modbus stacks, and the same 44-TQFP footprint as PIC18F4550-I/PT allows swap-in for designs that also need USB diagnostics.
Được đề xuất
HVAC Control Board
HVAC control boards use the PIC18F4585-I/PT for fan speed control, damper actuation, and thermostat interface management. The two ECCP modules generate PWM outputs for variable-speed fans and proportional valves, while the ADC reads thermistor temperature sensors with 10-bit resolution. The 3,328 bytes of SRAM allows real-time scheduling of multiple PID control loops, and the wide 4.2-5.5 V supply matches 24 VAC-derived DC rails with rectification. Compared with PIC18F452-I/PT, the 4585 adds ECAN which enables networked HVAC zone controllers communicating with a central chiller/boiler plant.
Được đề xuất
Embedded Data Logger with CAN Bridge
The PIC18F4585-I/PT's 48 KB Flash and 1 KB EEPROM make it ideal for embedded data loggers that buffer CAN bus traffic to external SPI/I2C flash memory. The dual USART allows simultaneous CAN-to-UART bridging, useful for diagnostics ports and telematics gateways. The 10-bit ADC with up to 13 channels supports analog sensor monitoring alongside digital CAN data, and the ICSP programming interface enables field firmware updates. Designers can implement circular log buffers in SRAM with periodic SPI flash offload, leveraging the same 44-TQFP footprint as PIC18F4480-I/PT for cost-down variants.
Được đề xuất
HMI Control Panel
Human-Machine Interface (HMI) panels deploy the PIC18F4585-I/PT as a graphics co-controller for character or small graphic LCDs driven over SPI or parallel interface. The 36 I/O pins drive keypads, rotary encoders, and LED indicators, while the ECAN module enables communication with industrial PLC networks. With the 44-TQFP package offering compact form factor for tight panel enclosures, the part complements PIC18F4450-I/PT in designs that also need USB host/device connectivity. The MPLAB XC8 free license keeps BOM-attached firmware development cost low for high-volume HMI production.
Được đề xuất
Aftermarket Automotive Telematics
Although not AEC-Q100 qualified, the PIC18F4585-I/PT is widely used in aftermarket telematics, OBD-II CAN sniffers, and fleet tracking devices that interface with vehicle CAN buses at 250/500 kbps. Its integrated ECAN handles CAN 2.0B active traffic, while the dual USART bridges to GSM/4G modems or GPS receivers. The industrial -40C to +85C range is acceptable for cabin-installed aftermarket devices. Compared with PIC18F4585-I/PTVAO (AEC-Q100 grade), the standard part is lower cost and more readily available through distribution. For OEMs requiring AEC-Q100, the PTVAO suffix variant should be selected.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F4585-I/PT — 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 | PIC18F4580-I/PT | PIC18F4480-I/PT | PIC18F4680-I/PT | PIC18F4550-I/PT | DSPIC33FJ64MC804-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same |
| Core Architecture | 8-bit PIC18 Enhanced RISC | 8-bit PIC18 Enhanced RISC | 8-bit PIC18 Enhanced RISC | 8-bit PIC18 Enhanced RISC | 8-bit PIC18 Enhanced RISC | 16-bit dsPIC33 DSC |
| Program Flash | 48 KB | 48 KB | 16 KB | 48 KB | 32 KB | 64 KB |
| Data RAM | 3,328 bytes | 3,328 bytes | 768 bytes | 3,328 bytes | 2,048 bytes | 16,384 bytes |
| ECAN Module | Yes (integrated, 2.0B active) | No | Yes | Yes (integrated, 2.0B active) | No (has USB instead) | Yes (ECAN) |
| USB 2.0 | No | No | No | No | Yes (USB 2.0 Full-Speed) | No |
| Maximum CPU Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 48 MHz | 40 MIPS (80 MHz) |
| 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 | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Pin Count / Package | 44-pin TQFP | 44-pin TQFP | 44-pin TQFP | 44-pin TQFP | 44-pin TQFP | 44-pin TQFP |
Bảo phân biệt quan trọng
- Integrated ECAN 2.0B controller with 16 acceptance filters (vsPIC18F4580-I/PT)
- 48 KB Flash + 3,328 bytes RAM in 44-TQFP (vsPIC18F4480-I/PT)
- 5 V native operation with industrial temperature grade (vsDSPIC33FJ64MC804-I/PT)
Ghi chú thiết kế
Decouple every VDD/VSS pin pair with 100 nF ceramic capacitors placed within 5 mm of the IC, and add a single 10 uF bulk capacitor on the main VDD rail. For AVDD/AVSS, isolate with a ferrite bead from VDD and add dedicated 100 nF + 10 uF decoupling. The 4585's ADC accuracy depends critically on clean analog supply - avoid routing digital signal traces across the analog ground plane.
Do not leave MCLR floating - tie to VDD through a 10 kohm resistor or drive with a supervisor IC for production designs. The internal weak pull-up is not strong enough for noisy industrial environments. For ICSP programming, ensure RB6/RB7 are not loaded with heavy capacitance (< 50 pF total including trace and connector) to avoid programming failures.
When using the ECAN module, route the CANTX/CANRX signals away from switching nodes and keep traces < 50 mm to minimize EMI susceptibility. Place the MCP2551 (or compatible) CAN transceiver within 25 mm of the CAN pins. The CAN bus requires 120 ohm termination at both physical ends of the bus, but NOT at intermediate nodes - mis-termination is the leading cause of CAN bus errors.
Estimated: At 40 MHz CPU clock with all peripherals active and 36 I/O pins switching at 10 MHz, the PIC18F4585-I/PT draws approximately 60-80 mA from VDD. With 44-TQFP thermal resistance theta_JA of approximately 50 C/W on a 4-layer PCB, junction temperature rise above ambient is roughly 4C - well within the -40C to +85C industrial range. Verify with board-level thermal characterization for sealed enclosures.
When configuring the oscillator, choose the HS mode for 10-40 MHz crystals with appropriate load capacitors per the crystal manufacturer's spec (typically 15-33 pF on each side). For low-EMI applications, consider the EC mode with an external sine-wave clock driver. Avoid PLL modes above 40 MHz unless the application can tolerate the jitter penalty on USART timing.
Thông tin tuân thủ
RoHS compliant per Microchip product declaration. Lead-free matte tin plating on TQFP package. The standard -I/PT suffix is industrial grade (-40C to +85C) and not AEC-Q100 qualified; for AEC-Q100 automotive applications, choose the -I/PTVAO suffix variant.