PIC18LF6585-I/L - 8-bit MCU, 48KB Flash, 40MHz, 52 I/O | Microchip
MPN: PIC18LF6585-I/L ✓ Hoạt độngPIC18LF6585-I/L Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data RAM, and a rich set of on-chip peripherals into a single IC. Within the broader semiconductor taxonomy, an MCU belongs to the category of embedded processors (alongside DSPs, FPGAs, and microprocessors) and is the workhorse of real-time control applications. The PIC18F series uses an enhanced Harvard architecture with separate code and data buses, giving it deterministic instruction execution ideal for interrupt-driven control loops. The 'LF' prefix designates the low-voltage variant supporting operation down to 2.0V, while the 'F' versions require 4.2V minimum.
Key features of the PIC18LF6585-I/L include 1024 bytes of EEPROM data memory, an ECAN controller that supports CAN 2.0B active with prioritized message handling, a USART with LIN master/slave support, an MSSP for SPI and I2C, four timer modules (Timer0/1/2/3), a 10-bit PWM module, and nanoWatt power management for sleep-mode operation. The 'I' suffix indicates the industrial operating temperature range of -40C to +85C, making it suitable for non-automotive harsh environments.
Architecturally, the PIC18LF6585 employs Microchip's enhanced 8-bit core with a 16-bit instruction word, an 8-level hardware stack, and a peripheral oscillator that allows independent timer operation from the main system clock. Its wide operating voltage range (2.0V to 5.5V) and low-power modes support battery-backed applications, while the ECAN module hardware-filters incoming frames to reduce CPU load in networked designs.
Typical applications include industrial CAN-bus node controllers, HVAC control boards, building automation gateways, motor control front-ends, point-of-sale terminals, and embedded sensor hubs. Its 52 I/O pins provide ample headroom for keypad scanning, LCD driving, and parallel sensor aggregation.
When designing with this device, ensure your MPLAB X IDE project selects the PIC18LF6585 device ID and confirm the 68-pin PLCC footprint matches your PCB land pattern. ECAN bus termination, oscillator stability, and Brown-Out Reset (BOR) configuration must be reviewed before firmware bring-up.
This page synthesizes distributor pricing, same-brand drop-in alternatives from the PIC18 family, and practical design notes not consolidated in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF6585-I/L — 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 PIC18LF6585-I/L (cùng hình factor và footprint) — khác nhau ở Core Architecture, Mounting Type, Operating Temperature, Package, Timers.
PIC18LF6680-I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F6585-I/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF6682-I/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF8585-I/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF6585-I/L Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit (Enhanced Harvard) |
| Series | PIC18F |
| Program Memory | 48 KB (24K x 16) Flash |
| Data RAM | 3328 bytes |
| EEPROM | 1024 bytes |
| Tần số xung maksimum | 40 MHz |
| Instruction Throughput | 10 MIPS |
| Operating Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 52 |
| ADC | 10-bit, up to 12 channels |
| CAN Module | ECAN (CAN 2.0B Active) |
| UART/USART | 1x USART with LIN support |
| SPI | 1x MSSP (SPI/I2C) |
| Timers | 4 (Timer0, Timer1, Timer2, Timer3) |
| PWM | 10-bit, multiple channels |
| Hộp | 68-PLCC (J-Lead) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF6585-I/L
| Chân 1 | MCLR — Master Clear (Reset) input, internal pull-up |
| Chân 2 | RA0 — PORTA bit 0 / AN0 analog input |
| Chân 3 | RA1 — PORTA bit 1 / AN1 analog input |
| Chân 4 | RA2 — PORTA bit 2 / AN2 / VREF- |
| Chân 5 | RA3 — PORTA bit 3 / AN3 / VREF+ |
| Chân 6 | RA4 — PORTA bit 4 / T0CKI |
| Chân 7 | RA5 — PORTA bit 5 / AN4 / SS |
| Chân 8 | RA6 — PORTA bit 6 / OSC2 |
| Chân 9 | OSC1 — Oscillator crystal input |
| Chân 10 | OSC2 — Oscillator crystal output |
| Chân 11 | RC0 — PORTC bit 0 |
| Chân 12 | RC1 — PORTC bit 1 |
| Chân 13 | RC2 — PORTC bit 2 / CCP1 |
| Chân 14 | RC3 — PORTC bit 3 / SCL |
| Chân 15 | RC4 — PORTC bit 4 / SDA |
| Chân 16 | RC5 — PORTC bit 5 / SDO |
| Chân 17 | RC6 — PORTC bit 6 / TX |
| Chân 18 | RC7 — PORTC bit 7 / RX |
| Chân 19 | GND — Ground reference |
| Chân 20 | VDD — Positive supply voltage |
| Chân 21 | RB0 — PORTB bit 0 / INT0 |
| Chân 22 | RB1 — PORTB bit 1 / INT1 |
| Chân 23 | RB2 — PORTB bit 2 / INT2 |
| Chân 24 | RB3 — PORTB bit 3 / CCP2 |
| Chân 25 | RB4 — PORTB bit 4 |
| Chân 26 | RB5 — PORTB bit 5 / PGM |
| Chân 27 | RB6 — PORTB bit 6 / PGC |
| Chân 28 | RB7 — PORTB bit 7 / PGD |
| Chân 29 | GND — Ground reference |
| Chân 30 | VDD — Positive supply voltage |
| Chân 31 | RD0 — PORTD bit 0 / PSP0 |
| Chân 32 | RD1 — PORTD bit 1 / PSP1 |
| Chân 33 | RD2 — PORTD bit 2 / PSP2 |
| Chân 34 | RD3 — PORTD bit 3 / PSP3 |
| Chân 35 | RD4 — PORTD bit 4 / PSP4 |
| Chân 36 | RD5 — PORTD bit 5 / PSP5 / P1A |
| Chân 37 | RD6 — PORTD bit 6 / PSP6 / P1B |
| Chân 38 | RD7 — PORTD bit 7 / PSP7 / P1C |
| Chân 39 | GND — Ground reference |
| Chân 40 | VDD — Positive supply voltage |
| Chân 41 | RE0 — PORTE bit 0 / AN5 / RD |
| Chân 42 | RE1 — PORTE bit 1 / AN6 / WR |
| Chân 43 | RE2 — PORTE bit 2 / AN7 / CS |
| Chân 44 | RE3 — PORTE bit 3 |
| Chân 45 | RE4 — PORTE bit 4 |
| Chân 46 | RE5 — PORTE bit 5 |
| Chân 47 | RE6 — PORTE bit 6 |
| Chân 48 | RE7 — PORTE bit 7 |
| Chân 49 | GND — Ground reference |
| Chân 50 | VDD — Positive supply voltage |
| Chân 51 | RF0 — PORTF bit 0 / AN8 |
| Chân 52 | RF1 — PORTF bit 1 / AN9 / C2OUT |
| Chân 53 | RF2 — PORTF bit 2 / AN10 / C1OUT |
| Chân 54 | RF3 — PORTF bit 3 / AN11 |
| Chân 55 | RF4 — PORTF bit 4 / AN12 |
| Chân 56 | RF5 — PORTF bit 5 / AN13 |
| Chân 57 | RF6 — PORTF bit 6 / AN14 |
| Chân 58 | RF7 — PORTF bit 7 / AN15 |
| Chân 59 | GND — Ground reference |
| Chân 60 | VDD — Positive supply voltage |
| Chân 61 | RG0 — PORTG bit 0 / ECCP1 |
| Chân 62 | RG1 — PORTG bit 1 / TX2 |
| Chân 63 | RG2 — PORTG bit 2 / RX2 |
| Chân 64 | RG3 — PORTG bit 3 / CCP3 |
| Chân 65 | RG4 — PORTG bit 4 / CCP4 |
| Chân 66 | RG5 — PORTG bit 5 |
| Chân 67 | RG6 — PORTG bit 6 |
| Chân 68 | RG7 — PORTG bit 7 |
Ứng dụng tiêu biểu
PIC18LF6585-I/L phù hợp cho 6 Áp dụngs: Industrial CAN-Bus Node Controller, HVAC Control Board, Building Automation Gateway, Motor Control Front-End, Point-of-Sale Terminal, Embedded Sensor Hub.
Industrial CAN-Bus Node Controller
The PIC18LF6585-I/L is purpose-built for industrial CAN-bus node controllers where 48KB of Flash comfortably hosts CANopen or DeviceNet protocol stacks, and the 52 I/O pins aggregate sensor inputs and actuator outputs from a single die. Its hardware ECAN module implements CAN 2.0B Active with hardware acceptance filtering, offloading bus arbitration from the CPU and freeing 10 MIPS of throughput for application logic. The 2.0V minimum supply allows battery-backed nodes that continue logging CAN traffic during line-power outages. Place the MCU between the bus transceiver (such as MCP2551) and the I/O connectors, with a 120-ohm termination at the bus endpoints per CAN specifications.
Được đề xuất
HVAC Control Board
HVAC control boards benefit from the PIC18LF6585-I/L's combination of 52 I/O for reading multiple temperature sensors, damper feedback, and relay outputs, plus the ECAN module for inter-board communication across multiple zones. The 10-bit ADC with up to 12 channels digitizes thermistor bridges and pressure transducers without an external ADC, while the 4 timers drive triac phase-control for AC line modulation. Operating from 2.0V to 5.5V supports direct 3.3V power designs, reducing heat dissipation in wall-mounted thermostats. The -40C to +85C industrial temperature range ensures reliable operation in mechanical rooms and unconditioned spaces.
Được đề xuất
Building Automation Gateway
The PIC18LF6585-I/L is well matched to building automation gateways that bridge BACnet MS/TP, Modbus, or proprietary CAN-bus field networks to Ethernet or Wi-Fi backhaul routers. The 48KB Flash accommodates Modbus RTU/TCP libraries alongside application logic, and 3328 bytes of RAM holds message buffers for routing telemetry packets. The MSSP (SPI/I2C) interface connects to FRAM or EEPROM for storing building schedules and configuration parameters. Operating down to 2.0V supports battery-backed RTC retention, and the ECAN module handles the multi-node CAN bus typical of HVAC and lighting control panels.
Được đề xuất
Motor Control Front-End
Motor control front-ends use the PIC18LF6585-I/L to read encoder quadrature signals, Hall-effect sensors, and shunt current measurements, then generate PWM command signals for downstream three-phase inverter drivers. The 4 hardware timers enable precise PWM edge alignment, and the 10-bit ADC samples current feedback with deterministic latency. The ECAN module delivers closed-loop setpoint updates from a centralized motion controller at bus speeds up to 1 Mbps. The 52 I/O pins allocate dedicated channels for fault inputs, brake control, and enable lines without external I/O expanders. Industrial temperature rating supports factory-floor mounting.
Được đề xuất
Point-of-Sale Terminal
Point-of-sale (POS) terminals benefit from the PIC18LF6585-I/L's wide I/O count for driving a character LCD, scanning a keypad matrix, and interfacing to card readers over SPI or UART. The 48KB Flash stores payment application logic, transaction journaling, and security primitives, while 1024 bytes of EEPROM retains terminal configuration across power cycles. The ECAN interface coordinates multi-counter layouts (such as restaurant line displays), and the 2.0V-5.5V supply range simplifies power management across battery-backed and mains-powered configurations. Industrial temperature grade ensures reliability in retail back-of-house environments.
Được đề xuất
Embedded Sensor Hub
The PIC18LF6585-I/L functions as an embedded sensor hub aggregating inputs from temperature, humidity, flow, and gas sensors via I2C and SPI, with the 52 I/O pins providing ample expansion headroom. Its 10 MIPS throughput handles local filtering and threshold detection before transmitting aggregated data over CAN-bus or USART to a host PLC. The nanoWatt power-down modes extend battery life in remote installations, and the 3328-byte RAM buffers sensor history between transmissions. The 68-pin PLCC package is preferred for industrial sensor enclosures that require through-hole mechanical strength over surface-mount TQFP.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF6585-I/L — 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 | PIC18LF6680-I/L | PIC18F6585-I/L | PIC18LF6682-I/L | PIC18LF8585-I/L |
|---|---|---|---|---|---|
| Package | 68-PLCC (J-Lead) | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 48 KB Flash | 80 KB Flash | 48 KB Flash | 80 KB Flash | 48 KB Flash |
| Data RAM | 3328 bytes | 4096 bytes | 3328 bytes | 3328 bytes | 3328 bytes |
| Operating Voltage Range | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 4.2 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Maximum Clock Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| I/O Pins | 52 | 52 | 52 | 52 | 52 |
| ECAN Module | Yes (CAN 2.0B Active) | Yes (CAN 2.0B Active) | Yes (CAN 2.0B Active) | Yes (CAN 2.0B Active + LIN) | Yes (CAN 2.0B Active) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Bảo phân biệt quan trọng
- Wide 2.0V-5.5V operating voltage range enables direct battery connection (vsPIC18F6585-I/L)
- Higher Flash memory headroom for complex CAN protocol stacks (vsPIC18LF4580-I/PT)
- Drop-in compatibility with higher-memory PIC18LF6680 sibling (vsPIC18LF6680-I/L)
Ghi chú thiết kế
The PIC18LF6585-I/L requires decoupling capacitors of 100 nF ceramic placed within 5 mm of each VDD pin and a single 10 uF tantalum or low-ESR electrolytic bulk capacitor on the main supply rail. There are six VDD and six GND pins distributed around the 68-PLCC package; bypassing each VDD/GND pair independently minimizes ground bounce and VDD droop during high-current port transitions. Brown-out reset (BOR) must be enabled in configuration bits for industrial deployments to prevent code execution at low supply voltages.
The 68-pin PLCC (J-Lead) footprint requires through-hole pads with J-lead compatible land patterns. Thermal relief spokes on the PLCC pads improve hand-soldering but are optional for wave-solder production. A ground plane should be placed on the bottom layer directly under the MCU, with the ECAN bus traces routed as a differential pair (CANH and CANL) of characteristic impedance near 120 ohms. Keep the ECAN bus traces away from switching power or PWM signals to minimize radiated EMI coupling.
Do not confuse the LF (low-voltage 2.0V-5.5V) variant with the standard F (4.2V-5.5V) variant when designing battery-backed systems - the LF version is mandatory for 3.3V-only operation. Always set the configuration bits for the correct oscillator mode (HS, XT, or EC) and disable the watchdog timer (WDT) if not used, or configure it with a generous postscaler to avoid unintended resets during long ECAN ISR execution. When migrating between PIC18LF6585 and PIC18LF6680, recompile the firmware against the new device ID even though the pinout is identical.
Thông tin tuân thủ
Industrial-grade MCU not AEC-Q100 qualified for automotive. RoHS and lead-free compliant per Microchip product declarations. REACH compliance confirmed via manufacturer datasheet.
