PIC18F4585-E/ML - 8-bit 25MHz 48KB Flash MCU w/ECAN | Microchip
料号： PIC18F4585-E/ML ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $10.05 | $10.05 |
| 10 | $9.05 | $90.50 |
| 100 | $7.55 | $755.00 |
| 500 | $6.8 | $3,400.00 |
| 1,000 | $6.04 | $6,040.00 |
PIC18F4585-E/ML 概述
An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip that integrates a CPU, non-volatile program memory (Flash/ROM), volatile working memory (RAM), peripherals, and I/O on a single die. The PIC18F family sits in the hierarchy: 8-bit microcontroller -> microcontroller -> embedded controller -> semiconductor IC. ECAN is an enhanced implementation of the Bosch CAN 2.0B protocol with multiple mailboxes, filters, and masks for automotive and industrial networking.
Key features of the PIC18F4585-E/ML include a 10-bit ADC with up to 13 input channels, multiple timers, an Enhanced USART, MSSP (SPI/I2C), and the nanoWatt power-management feature set with idle, sleep, and run modes. The device also offers self-programmability, an ICD/ICSP debug interface, and a 10 MIPS instruction throughput at 40 MHz oscillator (with 4x PLL).
Architecturally, the PIC18F4585 uses Microchip's Harvard RISC core with separate program and data buses, a 16-bit instruction word, and hardware multiply. The ECAN engine offloads bus arbitration and message filtering from the CPU, leaving significant bandwidth for application logic, sensor acquisition, or motor control loops.
Typical applications include automotive body and chassis ECAN nodes, industrial CAN-based sensor networks, HVAC controllers, building automation gateways, and general-purpose embedded control with CAN connectivity. The wide operating voltage range and extended temperature grade also suit battery-management and heavy-industrial equipment.
When designing with this part, ensure the QFN exposed pad is soldered to a sufficient copper pour to keep junction rise within limits, place decoupling capacitors within 3 mm of each power pin, and validate ECAN bus termination (120 ohm) at each network end. The /ML suffix indicates the 44-pin QFN (8x8 mm) package.
This page synthesizes distributor pricing, same-brand drop-in alternatives from Microchip's PIC18F family, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： PIC18F4585-E/ML ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18F4585-E/ML （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, Program Memory (Flash), ADC, MSL Level.
快速对比工具——选择替代料号进行并排对比：
PIC18F4585-I/ML
✅ 直接替换✓ 有现货
$5.53 / 个
查看数据手册 →PIC18F4585T-E/ML
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F4580-I/ML
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F4480-I/ML
✅ 直接替换✓ 有现货
$4.89 / 个
查看数据手册 →PIC18F4680-I/ML
✅ 直接替换✓ 有现货
$9.84 / 个
查看数据手册 →PIC18F4550-I/ML
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F4585-E/ML 最大额定值与电气特性
| Core | PIC18F, 8-bit Harvard RISC |
| Program Memory (Flash) | 48 KB (24K x 16) |
| RAM | 3,328 bytes |
| Maximum CPU Speed | 25 MHz (10 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| 工作温度 | -40 C to +125 C (Extended, -E suffix) |
| 封装 | 44-pin QFN (8x8 mm) with exposed pad |
| 安装类型 | Surface Mount |
| ADC | 10-bit, up to 13 channels |
| Communication | ECAN, Enhanced USART, MSSP (SPI/I2C) |
| CAN | ECAN 2.0B (Enhanced Controller Area Network) |
| Power-Saving Modes | nanoWatt (idle, sleep, run modes) |
| Debug / Programming | ICSP / ICD |
| RoHS 状态 | Compliant |
PIC18F4585-E/ML 引脚配置
| 引脚 1 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| 引脚 2 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| 引脚 3 | RA2/AN2/VREF- — PORTA bit 2 / analog input 2 / ADC VREF- |
| 引脚 4 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC VREF+ |
| 引脚 5 | RA4 — PORTA bit 4 |
| 引脚 6 | RA5 — PORTA bit 5 |
| 引脚 7 | RA6 — PORTA bit 6 |
| 引脚 8 | RA7 — PORTA bit 7 |
| 引脚 9 | VSS — Ground reference |
| 引脚 10 | VDD — Positive supply (2.0 V to 5.5 V) |
| 引脚 11 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| 引脚 12 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| 引脚 13 | RB2 — PORTB bit 2 |
| 引脚 14 | RB3 — PORTB bit 3 |
| 引脚 15 | RB4 — PORTB bit 4 |
| 引脚 16 | RB5 — PORTB bit 5 |
| 引脚 17 | RB6/PGC — PORTB bit 6 / ICSP clock |
| 引脚 18 | RB7/PGD — PORTB bit 7 / ICSP data |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | VDD — Positive supply (2.0 V to 5.5 V) |
| 引脚 21 | RC0 — PORTC bit 0 |
| 引脚 22 | RC1 — PORTC bit 1 |
| 引脚 23 | RC2 — PORTC bit 2 |
| 引脚 24 | RC3 — PORTC bit 3 |
| 引脚 25 | RC4 — PORTC bit 4 |
| 引脚 26 | RC5 — PORTC bit 5 |
| 引脚 27 | RC6 — PORTC bit 6 |
| 引脚 28 | RC7 — PORTC bit 7 |
| 引脚 29 | RE0/RD — PORTE bit 0 / parallel slave port read |
| 引脚 30 | RE1/WR — PORTE bit 1 / parallel slave port write |
| 引脚 31 | RE2/CS — PORTE bit 2 / parallel slave port chip select |
| 引脚 32 | VDD — Positive supply (2.0 V to 5.5 V) |
| 引脚 33 | VSS — Ground reference |
| 引脚 34 | OSC1/CLKI/RA7 — Crystal oscillator input / external clock |
| 引脚 35 | OSC2/CLKO/RA6 — Crystal oscillator output |
| 引脚 36 | MCLR — Master clear (reset) input |
| 引脚 37 | C1OUT — Comparator 1 output |
| 引脚 38 | C2OUT — Comparator 2 output |
| 引脚 39 | P1A/ECCP1 — Enhanced CCP1 PWM output / P1A |
| 引脚 40 | P1B — Enhanced PWM P1B output |
| 引脚 41 | P1C — Enhanced PWM P1C output |
| 引脚 42 | P1D — Enhanced PWM P1D output |
| 引脚 43 | NC — Not connected (per datasheet) |
| 引脚 44 | EP — Exposed thermal pad (connect to VSS) |
典型应用
PIC18F4585-E/ML 适用于 6 应用s: Automotive Body ECAN Node, Industrial CAN-Based Sensor Hub, HVAC Climate Controller, Building Automation Gateway, Battery Management Module, General-Purpose CAN Node with USB Debug.
Automotive Body ECAN Node
The PIC18F4585-E/ML is well suited as a body-control ECAN node because its integrated ECAN 2.0B engine offloads bus arbitration from the CPU and its -40C to +125C extended temperature grade meets automotive under-hood and cabin requirements. With 48 KB Flash it can host a CANopen or J1939 lightweight stack alongside application firmware, while the 10-bit ADC with up to 13 channels reads multiple analog sensors (temperature, lighting, position) without external muxes. Place the MCU near the bus with a 120 ohm termination resistor at each network end and isolate the bus with a CAN transceiver such as the MCP2551.
推荐
Industrial CAN-Based Sensor Hub
In a CAN-based industrial sensor hub the PIC18F4585-E/ML aggregates analog and digital sensor data and publishes it over ECAN. Its 25 MHz / 10 MIPS core easily handles periodic 100 ms sensor reads plus CAN message composition. The MSSP peripheral supports I2C or SPI sensors, and the Enhanced USART enables RS-485 fallback for legacy equipment. NanoWatt sleep modes allow battery-powered field nodes to sleep below 1 uA between transmissions, extending service intervals for remote installations.
推荐
HVAC Climate Controller
HVAC climate controllers benefit from the PIC18F4585-E/ML's mix of analog and digital peripherals. The 10-bit ADC samples thermistor temperature inputs, the Enhanced PWM channels drive fan or damper actuators, and ECAN connects the unit to a building automation bus. The 3,328 bytes of RAM is sufficient for short PID control loops and a small BACnet/CANopen message buffer. Low-voltage operation down to 2.0 V supports 24 V industrial supply rails through a simple linear regulator.
推荐
Building Automation Gateway
A building automation gateway using the PIC18F4585-E/ML can bridge ECAN to other field buses via the Enhanced USART (Modbus RTU over RS-485) or MSSP (I2C sensor expansion). With 48 KB Flash the gateway can host a small protocol translation table, scheduling logic, and diagnostics. The exposed pad QFN package and wide temperature range allow installation in unconditioned electrical rooms.
推荐
Battery Management Module
In a battery management module the PIC18F4585-E/ML measures individual cell voltages via the 10-bit ADC, controls balancing MOSFETs via PWM, and reports state-of-charge over ECAN to a master charger controller. Operating down to 2.0 V allows operation directly from a single Li-ion cell during deep discharge, and nanoWatt sleep modes minimize quiescent draw when the pack is idle.
推荐
General-Purpose CAN Node with USB Debug
Designers prototyping a CAN node benefit from the PIC18F4585-E/ML's ICSP/ICD debug interface for in-circuit debugging, plus the ECAN peripheral for bus communication. The same QFN footprint is shared with PIC18F4550-I/ML which adds USB, enabling an upgrade path to USB-CAN bridge hardware without PCB changes. This simplifies NPI and field firmware updates across a product family.
推荐
推荐产品汇总
工程参考数据： PIC18F4585-E/ML ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC18F4585-I/ML | PIC18F4580-I/ML | PIC18F4680-I/ML | PIC18F4550-I/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin QFN (8x8) | 44-pin QFN (8x8) - same | 44-pin QFN (8x8) - same | 44-pin QFN (8x8) - same | 44-pin QFN (8x8) - same |
| Flash Memory | 48 KB | 48 KB | 32 KB | 64 KB | 32 KB |
| RAM | 3,328 bytes | 3,328 bytes | 3,328 bytes | 3,328 bytes | 2,048 bytes |
| CAN | ECAN 2.0B | ECAN 2.0B | ECAN 2.0B | ECAN 2.0B | ECAN 2.0B + USB 2.0 FS |
| CPU Speed | 25 MHz / 10 MIPS | 25 MHz / 10 MIPS | 25 MHz / 10 MIPS | 25 MHz / 10 MIPS | 48 MHz / 12 MIPS |
| Temperature Grade | Extended -40C to +125C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
关键差异点
- Extended temperature grade with ECAN on the same die （对比 PIC18F4585-I/ML)
- More Flash headroom than PIC18F4580 in the same QFN footprint （对比 PIC18F4580-I/ML)
- Industrial focus without USB overhead （对比 PIC18F4550-I/ML)
设计说明
Decouple each VDD/VSS pair with a 100 nF ceramic placed within 3 mm of the pin. For the 44-pin QFN, place a bulk 10 uF tantalum or ceramic at the board supply entry. Hold VDD between 2.0 V and 5.5 V; during Flash programming stay within the datasheet-specified VDD range and avoid brown-out events that may corrupt the write cycle.
Estimated: at 25 MHz with all peripherals active at 5 V, the PIC18F4585-E/ML dissipates roughly 50-75 mW. The 44-pin QFN exposed pad reduces theta_JA significantly when soldered to a copper pour; stitch multiple thermal vias under the pad to the inner ground plane. Without the exposed-pad solder connection, junction temperature will rise well above ambient under heavy I/O toggling.
Route the ECAN CANTX/CANRX traces as a differential pair with 120 ohm characteristic impedance, keep stubs short, and place the MCP2551 transceiver within 25 mm of the MCU. Series-terminate each end of the bus with 120 ohm. Keep oscillator traces short and guard the crystal with a ground ring to minimize EMI that can couple into the CAN bus.
Do not leave the MCLR pin floating; tie it through a 10 kohm pull-up to VDD or use the internal weak pull-up with a defined reset strategy. Never apply voltage to any pin before VDD ramps up or you may latch-up the I/O. When migrating from the industrial-grade (I) variant to the extended (E) variant, revalidate timing at the new temperature corners.
合规信息
RoHS and lead-free per Microchip product page. The -E extended temperature grade supports automotive environments, but PIC18F4585-E/ML is not explicitly AEC-Q100 qualified; AEC-Q100-qualified members of the family are listed separately by Microchip.
