PIC18F4585-H/PT - 48KB Flash 8-bit MCU with ECAN | Microchip
MPN: PIC18F4585-H/PT ✓ פעילPIC18F4585-H/PT סקירה
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals around an 8-bit data path. PIC18F-series MCUs from Microchip use a Harvard-architecture RISC core with separate program and data buses, providing deterministic instruction execution in 4 clock cycles. Within the broader taxonomy, the PIC18F4585 belongs to the Enhanced Flash Microcontroller family with ECAN, nanoWatt power management, and 10-bit A/D peripherals - positioning it as a mid-range MCU for CAN-bus-enabled embedded systems.
Key features include an integrated ECAN (Enhanced Controller Area Network) module for automotive and industrial networking, a 10-bit A/D converter with up to 11 channels, multiple timers, USART with LIN support, and nanoWatt Technology for low-power sleep modes. The 44-pin TQFP package offers a generous thermal envelope and accessible GPIO count for through-hole-style prototype boards while remaining surface-mountable for high-volume production.
Typical applications include automotive body and powertrain ECUs, industrial CAN-node sensor hubs, HVAC controls, lighting controllers, and battery-management modules. The 48 KB Flash and 3.25 KB SRAM are well-matched to CANopen, DeviceNet, and J1939 protocol stacks that require both program space for communication libraries and runtime RAM for CAN message buffers.
When designing with this device, ensure the ECAN module is correctly clocked from the system oscillator and that the high-temperature (-H) grade is required only when ambient temperatures exceed +85C. Always reference the Microchip MPLAB XC8 toolchain documentation for compiler-specific register definitions.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing actionable comparison data for procurement and engineering teams.
חלופות תחליף ישיר עבור PIC18F4585-H/PT — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC18F4585-H/PT (אותו גורם צורה וטביעת רגל) — שונים ב Package, Operating Temperature, Timers, Core Architecture, Power-Saving Modes.
PIC18F4585-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F4585-E/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F4585-H/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F4585-H/ML
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F4585-E/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←DSPIC33FJ64MC804-H/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F4585-H/PT דירוגים מרביים ומאפיינים חשמליים
| Product Type | 8-bit Microcontroller (MCU) |
| Core Architecture | PIC18F RISC (Harvard, 8-bit) |
| Program Memory (Flash) | 48 KB (24K x 16) |
| SRAM | 3328 bytes (3.25K x 8) |
| Data EEPROM/HEF | 1024 bytes |
| Maximum CPU Speed | 25 MHz (10 MIPS) |
| טווח טמפרטורת פעולה | -40C to +150C (H grade) |
| Number of I/O Pins | 36 |
| מארז | 44-TQFP (10x10 mm) |
| סוג הרכבה | Surface Mount |
| A/D Converter | 10-bit, multi-channel |
| Communication Peripherals | ECAN, USART (LIN), SPI, I2C |
| Internal Oscillator | Yes |
| Power-Saving Modes | nanoWatt Technology |
| סטטוס RoHS | Compliant |
תצורת פינים של PIC18F4585-H/PT
| פין 1 | MCLR — Master Clear (reset) input |
| פין 2 | RA0/AN0 — Digital I/O / Analog input 0 |
| פין 3 | RA1/AN1 — Digital I/O / Analog input 1 |
| פין 4 | RA2/AN2 — Digital I/O / Analog input 2 |
| פין 5 | RA3/AN3/VREF+ — Digital I/O / Analog input 3 / A/D Vref+ |
| פין 6 | RA4/AN4 — Digital I/O / Analog input 4 |
| פין 7 | RA5/AN5/SS — Digital I/O / Analog input 5 / SPI slave select |
| פין 8 | RE0/RD/AN6 — Digital I/O / Parallel port read / Analog input 6 |
| פין 9 | RE1/WR/AN7 — Digital I/O / Parallel port write / Analog input 7 |
| פין 10 | RE2/CS/AN8 — Digital I/O / Parallel port chip select / Analog input 8 |
| פין 11 | VDD — Positive supply voltage |
| פין 12 | VSS — Ground reference |
| פין 13 | OSC1/CLKIN — External oscillator input |
| פין 14 | OSC2/CLKOUT — External oscillator output |
| פין 15 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / Timer1 clock input |
| פין 16 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 |
| פין 17 | RC2/CCP1 — Digital I/O / CCP1 PWM/capture |
| פין 18 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| פין 19 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| פין 20 | RC5/SDO — Digital I/O / SPI data out |
| פין 21 | RC6/TX/CK — Digital I/O / USART TX / USART clock |
| פין 22 | RC7/RX/DT — Digital I/O / USART RX / USART data |
| פין 23 | RD0/PSP0/C1IN+ — Digital I/O / Parallel port / Comparator 1 input+ |
| פין 24 | RD1/PSP1/C1IN- — Digital I/O / Parallel port / Comparator 1 input- |
| פין 25 | RD2/PSP2/C2IN+ — Digital I/O / Parallel port / Comparator 2 input+ |
| פין 26 | RD3/PSP3/C2IN- — Digital I/O / Parallel port / Comparator 2 input- |
| פין 27 | RD4/PSP4/ECANRX — Digital I/O / Parallel port / ECAN receive |
| פין 28 | RD5/PSP5/ECANTX — Digital I/O / Parallel port / ECAN transmit |
| פין 29 | RD6/PSP6 — Digital I/O / Parallel port |
| פין 30 | RD7/PSP7 — Digital I/O / Parallel port |
| פין 31 | VSS — Ground reference |
| פין 32 | VDD — Positive supply voltage |
| פין 33 | RB0/INT0/FLT0 — Digital I/O / External interrupt 0 / PWM fault |
| פין 34 | RB1/INT1 — Digital I/O / External interrupt 1 |
| פין 35 | RB2/INT2 — Digital I/O / External interrupt 2 |
| פין 36 | RB3/INT3/CCP2 — Digital I/O / External interrupt 3 / CCP2 |
| פין 37 | RB4/KBI0 — Digital I/O / Keyboard interrupt 0 |
| פין 38 | RB5/KBI1/PGM — Digital I/O / Keyboard interrupt 1 / LVP program |
| פין 39 | RB6/KBI2/PGC — Digital I/O / Keyboard interrupt 2 / ICSP clock |
| פין 40 | RB7/KBI3/PGD — Digital I/O / Keyboard interrupt 3 / ICSP data |
| פין 41 | NC — Not connected |
| פין 42 | NC — Not connected |
| פין 43 | NC — Not connected |
| פין 44 | NC — Not connected |
יישומים טיפוסיים
PIC18F4585-H/PT מתאים עבור 6 יישוםs: Automotive Body Control Module, Industrial CAN Sensor Hub, HVAC Climate Controller, Automotive Lighting Module, Battery Management Slave Controller, Industrial Motor Control Node.
Automotive Body Control Module
The PIC18F4585-H/PT is well-suited for automotive body control ECUs thanks to its integrated ECAN module, 48 KB Flash for CANopen/J1939 stacks, and -40C to +150C H-grade operating range. The 3328 B SRAM accommodates CAN message buffers and application variables simultaneously, while the 1024 B EEPROM provides non-volatile storage for diagnostic trouble codes and configuration parameters. With 36 GPIO pins, designers can interface to body loads (lighting, wipers, mirrors) without external I/O expanders. The 10-bit A/D with 11 channels supports sensor inputs such as temperature, battery voltage, and switch position monitoring typical in body controller designs.
מומלץ
Industrial CAN Sensor Hub
For industrial CAN node sensor aggregation, the PIC18F4585-H/PT's ECAN module handles bus arbitration and message acceptance filtering at up to 1 Mbps, offloading communication overhead from the CPU. The 25 MHz maximum clock delivers 10 MIPS, sufficient to run CANopen or DeviceNet protocol stacks alongside sensor sampling at typical industrial rates (1 kHz). The nanoWatt power-saving modes enable battery-backed sensor operation with sleep currents below typical industrial wireless sensor requirements. The 44-TQFP package provides robust thermal performance for enclosed industrial cabinets, and the H-grade temperature rating supports deployment near motors or heaters.
מומלץ
HVAC Climate Controller
In HVAC climate controllers, the PIC18F4585-H/PT serves as the central processing node interfacing to temperature sensors via its 10-bit A/D, controlling fan/blower drivers via PWM, and communicating with the building automation network through ECAN. The 48 KB Flash stores control algorithms and look-up tables for multi-zone climate profiles, while the 1024 B EEPROM retains user settings through power cycles. The H-grade operating temperature range ensures reliable operation in plenum spaces where ambient temperatures can reach +70C, and the 36 GPIO count provides ample I/O for damper actuators and status LEDs.
מומלץ
Automotive Lighting Module
Headlamp and signal-lighting control modules benefit from the PIC18F4585-H/PT's ECAN integration for receiving lighting commands from the body controller, PWM channels for LED dimming, and the H-grade temperature range for under-hood or headlamp-housing deployment. The 3328 B SRAM holds CAN message routing tables, while the 10-bit A/D monitors LED current sense resistors for fault detection. The 36 GPIO count supports multi-channel LED matrix driving without external shift registers. The 48 KB Flash accommodates adaptive lighting algorithms including curve interpolation and dynamic headlamp leveling.
מומלץ
Battery Management Slave Controller
In distributed battery management systems for EV and industrial battery packs, the PIC18F4585-H/PT operates as a slave node monitoring individual cell voltages and temperatures via its 10-bit A/D converter, with results transmitted over ECAN to the master controller. The 1024 B EEPROM stores cell-balancing parameters and lifetime data, while the 3328 B SRAM buffers measurement samples between CAN transmissions. The H-grade temperature rating is critical for pack-mounted modules where ambient temperatures can exceed +85C during fast charging. The 48 KB Flash stores custom cell-balancing algorithms and safety state machines.
מומלץ
Industrial Motor Control Node
For decentralized motor control in factory automation, the PIC18F4585-H/PT provides ECAN connectivity to the central PLC while its timers generate PWM signals for variable-frequency drives. The 25 MHz clock and 10 MIPS support field-oriented control loops for small to medium motors, and the 10-bit A/D reads current shunt amplifiers for closed-loop torque control. The H-grade operating temperature range suits deployment near motor housings or inverter cabinets. The 48 KB Flash stores motor control firmware including startup routines, fault handling, and CANopen DS402 drive profile implementation.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC18F4585-H/PT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC18F4585-I/PT | PIC18F4585-E/PT | PIC18F4585-H/P | PIC18F4585-H/ML | DSPIC33FJ64MC804-H/PT |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (10x10) | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 40-PDIP - different | 44-QFN (8x8) - different footprint | 44-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | ||
| Operating Temperature | -40C to +150C (H grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +150C (H grade) | ||
| Program Flash | 48 KB | 48 KB | 48 KB | 64 KB | ||
| SRAM | 3328 bytes | 3328 bytes | 3328 bytes | 16384 bytes | ||
| ECAN Module | Yes | Yes | Yes | Yes | ||
| Core Architecture | 8-bit PIC18 RISC | 8-bit PIC18 RISC | 8-bit PIC18 RISC | 16-bit dsPIC33 DSC |
מבדילים עיקריים
- Extended +150C operating temperature range via -H grade (לעומתPIC18F4585-I/PT)
- Integrated ECAN module for CAN 2.0B networking (לעומתPIC18F4580-I/P)
- Larger 1024-byte data EEPROM for non-volatile storage (לעומתPIC18F4580-I/P)
- Same package compatibility with PIC18F4680 for memory upgrade (לעומתPIC18F4680-I/P)
הערות תכנון
The PIC18F4585-H/PT accepts a supply voltage within the typical PIC18F4585 family range (2.0V to 5.5V per the datasheet). Place a 100 nF decoupling capacitor within 5 mm of each VDD/VSS pair (pins 11/12 and 31/32) and a bulk 10 uF tantalum or ceramic at the board entry point. The H-grade variant at +150C ambient requires that total supply current stay within thermal envelope - use nanoWatt sleep modes during idle to minimize self-heating.
Although the 44-TQFP package has limited internal heat dissipation, the PIC18F4585-H/PT typically consumes less than 50 mA active and orders of magnitude less in sleep, so thermal management is rarely critical. However, at +150C ambient with continuous 25 MHz operation, junction temperature may approach the datasheet maximum. Consider using the 44-QFN (PIC18F4585-H/ML) variant for improved thermal pad connection to PCB copper, or reducing clock to 20 MHz if ambient temperature exceeds +140C consistently.
Common pitfalls when designing with PIC18F4585-H/PT: (1) Failing to configure the ECAN I/O pins (RD4/RD5) as digital inputs after analog functions on PORTD; TRIS bits must be set correctly. (2) Mistakenly using the -I grade parts in designs that exceed +85C ambient - use -H grade only. (3) Exceeding the 5.5V absolute maximum on any I/O pin when interfacing to 12V automotive signals without proper level translation. (4) Not enabling the internal oscillator configuration bits correctly when no external crystal is used.
For 44-TQFP layout, use a 4-layer PCB with continuous ground plane under the IC to minimize EMI on ECAN bus signals. Place the ECAN transceiver within 20 mm of pins RD4/RD5, and route CANH/CANL as a 100-ohm differential pair with characteristic impedance matched by stack-up. Keep oscillator traces short (<10 mm) and surround with ground guard rings if operating at 25 MHz to avoid coupling into the A/D converter inputs.
The 10-bit A/D converter requires proper acquisition time configuration based on source impedance; with 10 kohm source impedance, use at least 16 TAD periods. Place a 100 nF capacitor at each analog input pin to filter high-frequency noise. When using ECAN at 1 Mbps, ensure the bus termination is 120 ohms at each end of the trunk line; stub length should not exceed 1/10 of the signal rise time to prevent reflections.
מידע על תאימות
RoHS and REACH compliance per Microchip product page; -H grade is high-temperature but not formally AEC-Q100 automotive qualified at the Q100 level (consult Microchip for PPAP documentation if automotive qualification is required for the end application).