PIC18LF4585T-I/PT - 8-bit 40MHz 48KB Flash MCU w/ ECAN | Microchip
MPN: PIC18LF4585T-I/PT ✓ نشطPIC18LF4585T-I/PT نظرة عامة
Background Knowledge: The PIC18 family is Microchip's high-performance 8-bit microcontroller line built on a RISC architecture. An MCU (microcontroller) integrates a CPU core, non-volatile program memory (Flash), RAM, peripherals (timers, ADC, communication controllers) and I/O into a single chip. Within the PIC18 hierarchy, this part sits under PIC18F4585 family -> PIC18F45xx ECAN series -> PIC18F family, characterized by the ECAN peripheral and 40 MHz operation. The 'LF' prefix denotes the low-voltage variant designed to operate from 2.0 V, while the 'F' (non-LF) variant runs from 4.2 V minimum.
Key features include an 8-bit data path, 40 MHz maximum clock speed, 48 KB Flash (24K x 16 words), 3,328 bytes RAM, integrated ECAN module compliant with CAN 2.0B, 10-bit ADC up to 13 channels, three timers and the standard PIC18 peripheral set. The 44-TQFP (10x10 mm) package provides 36 digital I/O pins, suitable for industrial and automotive embedded designs.
Technical depth: The PIC18LF4585 employs a modified Harvard architecture with separate program and data buses, 16-bit opcodes and an 8-level hardware stack. The ECAN peripheral supports standard and extended identifiers, multiple transmit/receive buffers and acceptance filters, making the part suitable for industrial automation nodes. The LF (low-voltage) silicon runs core peripherals down to 2.0 V and supports nanoWatt technology for sleep currents in the microampere range.
Typical applications include CAN-based industrial sensor networks, automotive body and powertrain nodes, embedded control with CAN communication, and low-power field instrumentation. The 48 KB Flash supports CANopen and DeviceNet protocol stacks.
Design consideration: Pay attention to the 2.0 V minimum Vdd of the LF variant - if your system needs 5 V operation, choose the PIC18F4585T-I/PT instead. Use Microchip's MPLAB X IDE and the PICkit debugger for code development.
This page consolidates distributor pricing, drop-in alternatives, and practical design guidance beyond what the manufacturer datasheet alone provides.
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الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC18LF4585T-I/PT (نفس عامل الشكل والبصمة) — يختلف في Timers, Package, ADC, Program Memory Size, I/O Pins.
PIC18LF4585-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F4585T-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18LF4580T-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18LF458T-I/PT
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18LF4480T-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18LF4585T-I/PT الحدود القصوى والخصائص الكهربائية
| Core Architecture | PIC 8-bit RISC |
| Family | PIC18F4585 (PIC18F45xx ECAN series) |
| عرض ناقل البيانات | 8-bit |
| Maximum CPU Frequency | 40 MHz |
| Program Memory Size | 48 KB (24K x 16) Flash |
| RAM Size | 3,328 bytes |
| Supply Voltage (LF variant) | 2.0 V to 5.5 V |
| درجة حرارة التشغيل | -40 C to +85 C (Industrial) |
| CAN Controller | ECAN (CAN 2.0B compliant) |
| ADC | 10-bit, up to 13 channels |
| Timers | 3 (Timer0, Timer1, Timer2) |
| العلبة | 44-pin TQFP (PT) 10x10 mm |
| I/O Pins | 36 |
| نوع التركيب | Surface Mount |
| حالة RoHS | Compliant |
| Peripheral Family | nanoWatt low-power technology |
تكوين أطراف PIC18LF4585T-I/PT
| دبوس 1 | MCLR — Master Clear (Reset) input, active low |
| دبوس 2 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| دبوس 3 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| دبوس 4 | RA2/AN2/VREF- — Port A bit 2 / Analog input 2 / ADC VREF- |
| دبوس 5 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / ADC VREF+ |
| دبوس 6 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| دبوس 7 | RA5/AN4/SS — Port A bit 5 / Analog input 4 / SPI SS |
| دبوس 8 | RE0/RD/AN5 — Port E bit 0 / Parallel read / Analog input 5 |
| دبوس 9 | RE1/WR/AN6 — Port E bit 1 / Parallel write / Analog input 6 |
| دبوس 10 | RE2/CS/AN7 — Port E bit 2 / Parallel chip select / Analog input 7 |
| دبوس 11 | VDD — Positive supply voltage (2.0-5.5 V) |
| دبوس 12 | VSS — Ground reference |
| دبوس 13 | OSC1/CLKIN — Oscillator input / external clock input |
| دبوس 14 | OSC2/CLKOUT — Oscillator output / clock output |
| دبوس 15 | RC0/T1OSO/T13CKI — Port C bit 0 / Timer1 oscillator |
| دبوس 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator / CCP2 |
| دبوس 17 | RC2/CCP1 — Port C bit 2 / CCP1 PWM/capture |
| دبوس 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| دبوس 19 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| دبوس 20 | RC5/SDO — Port C bit 5 / SPI data out |
| دبوس 21 | RC6/TX/CK — Port C bit 6 / USART TX / clock |
| دبوس 22 | RC7/RX/DT — Port C bit 7 / USART RX / data |
| دبوس 23 | RD0/PSP0 — Port D bit 0 / Parallel slave port bit 0 |
| دبوس 24 | RD1/PSP1 — Port D bit 1 / Parallel slave port bit 1 |
| دبوس 25 | RD2/PSP2 — Port D bit 2 / Parallel slave port bit 2 |
| دبوس 26 | RD3/PSP3 — Port D bit 3 / Parallel slave port bit 3 |
| دبوس 27 | RD4/PSP4 — Port D bit 4 / Parallel slave port bit 4 |
| دبوس 28 | RD5/PSP5 — Port D bit 5 / Parallel slave port bit 5 |
| دبوس 29 | RD6/PSP6/TX2 — Port D bit 6 / PSP bit 6 / ECAN TX2 |
| دبوس 30 | RD7/PSP7/RX2 — Port D bit 7 / PSP bit 7 / ECAN RX2 |
| دبوس 31 | VSS — Ground reference |
| دبوس 32 | VDD — Positive supply voltage (2.0-5.5 V) |
| دبوس 33 | RB0/INT0/FLT0 — Port B bit 0 / External interrupt 0 / PWM fault 0 |
| دبوس 34 | RB1/INT1 — Port B bit 1 / External interrupt 1 |
| دبوس 35 | RB2/INT2 — Port B bit 2 / External interrupt 2 |
| دبوس 36 | RB3/INT3/CCP2 — Port B bit 3 / External interrupt 3 / CCP2 |
| دبوس 37 | RB4/AN8 — Port B bit 4 / Analog input 8 |
| دبوس 38 | RB5/AN9/PGM — Port B bit 5 / Analog input 9 / LVP program |
| دبوس 39 | RB6/AN10/PGC — Port B bit 6 / Analog input 10 / ICSP clock |
| دبوس 40 | RB7/AN11/PGD — Port B bit 7 / Analog input 11 / ICSP data |
| دبوس 41 | CANTX — ECAN transmit output |
| دبوس 42 | CANRX — ECAN receive input |
| دبوس 43 | AVDD — Analog supply voltage (tie to VDD) |
| دبوس 44 | AVSS — Analog ground (tie to VSS) |
التطبيقات النموذجية
PIC18LF4585T-I/PT مناسب لـ 6 التطبيقs: CAN-Bus Industrial Sensor Nodes, Automotive Body and Powertrain Controllers, Industrial Automation Control, Building Automation and HVAC Networks, Battery-Backed Field Instrumentation, Medical Monitoring Devices.
CAN-Bus Industrial Sensor Nodes
The PIC18LF4585T-I/PT's ECAN controller compliant with CAN 2.0B and 48 KB Flash program memory makes it a strong fit for CAN-based industrial sensor nodes and remote I/O modules. The ECAN peripheral supports standard and extended identifiers with hardware acceptance filters, offloading the CPU from bus arbitration and enabling deterministic message latency under 200 us per frame at 1 Mbit/s. The 2.0 V minimum Vdd supports 3.3 V systems common in factory automation, while the nanoWatt technology drops quiescent current to microampere levels for battery-backed field sensors. Pair with an MCP2551 CAN transceiver, and use the Flash for CANopen or DeviceNet stack implementations.
موصى به
Automotive Body and Powertrain Controllers
Automotive body and powertrain ECUs require the ECAN bus interface and wide operating voltage range that the PIC18LF4585T-I/PT delivers. The part's -40 C to +85 C industrial temperature rating covers cabin and chassis applications, while the 40 MHz CPU executes CAN, LIN and PWM control loops at 10 MIPS per the Microchip datasheet. The 48 KB Flash fits typical body controller firmware with diagnostic routines, while the 10-bit ADC reads 13 analog sensor channels for throttle, temperature and pressure. For under-hood powertrain designs requiring 125 C operation, choose the PIC18F4585T-I/PT-ESO (extended temperature variant) instead.
موصى به
Industrial Automation Control
The PIC18LF4585T-I/PT suits industrial automation controllers combining ECAN communication, PWM motor drive and analog sensor acquisition on a single chip. The three on-chip timers generate 16-bit PWM for stepper or brushless DC motor speed control, while the 13-channel 10-bit ADC reads position feedback, current sensing and temperature monitoring. The 48 KB Flash accommodates ladder logic interpreters and Modbus/CANopen protocol stacks. Operating voltage flexibility (2.0 V to 5.5 V) lets the same hardware target 3.3 V or 5 V industrial backplanes without redesign, and the 36 I/O pins handle keypad inputs, relay outputs and opto-isolated interfaces.
موصى به
Building Automation and HVAC Networks
Building automation systems use the PIC18LF4585T-I/PT as a node controller on ECAN networks linking thermostats, VAV boxes and AHU controllers. The wide Vdd range supports both 24 V AC-derived DC supplies and battery-backed 3.3 V systems, while the nanoWatt sleep modes extend battery life for wireless HVAC sensors. The Flash memory stores BACnet or proprietary building automation protocol stacks, and the ECAN peripheral links 50+ nodes on a single twisted pair. Pair the MCU with a TCN75A temperature sensor and an MCP2551 transceiver for a complete BACnet MS/TP or CAN-based HVAC controller reference design per the Microchip application note AN729.
موصى به
Battery-Backed Field Instrumentation
Battery-powered field instrumentation such as portable data loggers, wireless sensor nodes and remote metering devices benefits from the PIC18LF4585T-I/PT's low-voltage operation and nanoWatt technology. The LF silicon operates down to 2.0 V from a single lithium cell or 2x AA alkaline pack, while sleep currents in the microampere range extend operating life to multiple years on a single battery. The ECAN controller links multiple field instruments to a wired backbone for periodic data uploads. The 48 KB Flash stores calibration tables and measurement logs, and the 10-bit ADC captures analog signals from sensor bridges and 4-20 mA current loops. Choose PIC18LF4585T-I/PT for battery-budget sensitive designs.
موصى به
Medical Monitoring Devices
Medical device prototypes for patient monitoring, infusion pumps and diagnostic instruments leverage the PIC18LF4585T-I/PT's reliability and 8-bit determinism. The 40 MHz CPU provides real-time response for alarm handling, while the 10-bit ADC reads ECG, SpO2 and temperature analog frontends. The ECAN interface connects bedside monitors to a central nurse station network, and the LF voltage range supports both battery-powered portable units and 5 V line-powered consoles. Note that for production medical devices requiring FDA submission, ensure the part is sourced through Microchip's medical-grade supply chain; the standard PIC18LF4585T-I/PT is suitable for non-life-support prototyping and design verification only.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC18LF4585T-I/PT — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC18LF4585-I/PT | PIC18F4585T-I/PT | PIC18LF4580T-I/PT | PIC18LF458T-I/PT | PIC18LF4480T-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) 10x10 mm - same | 44-TQFP (PT) 10x10 mm - same | 44-TQFP (PT) 10x10 mm - same | 44-TQFP (PT) 10x10 mm - same | 44-TQFP (PT) 10x10 mm - same |
| Program Memory (Flash) | 48 KB | 48 KB | 48 KB | 48 KB | 32 KB | 16 KB |
| RAM Size | 3,328 bytes | 3,328 bytes | 3,328 bytes | 3,328 bytes | 1,536 bytes | 768 bytes |
| Maximum Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| CAN Module | ECAN (CAN 2.0B) | ECAN (CAN 2.0B) | ECAN (CAN 2.0B) | Legacy CAN | ECAN (CAN 2.0B) | ECAN (CAN 2.0B) |
| Supply Voltage | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) | 4.2 V to 5.5 V (F) | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) |
| ADC | 10-bit, 13 channels | 10-bit, 13 channels | 10-bit, 13 channels | 10-bit, 13 channels | 10-bit, 11 channels | 10-bit, 11 channels |
أبرز الفروقات
- Low-voltage operation with nanoWatt technology (مقابلPIC18F4585T-I/PT)
- Enhanced ECAN controller vs legacy CAN (مقابلPIC18LF4580T-I/PT)
- Largest Flash in the PIC18LF458x family (مقابلPIC18LF458T-I/PT (32 KB))
ملاحظات التصميم
Decouple both VDD pairs (pins 11/12 and 31/32) with 100 nF ceramic capacitors placed as close to the MCU as possible. AVDD (pin 43) and AVSS (pin 44) should also be decoupled with 100 nF plus 10 uF bulk. For noise-sensitive applications, route AVDD through a ferrite bead from VDD. The LF variant supports 2.0 V operation, so verify your LDO dropout margin at peak current (~50 mA) before settling on a regulator.
The 44-TQFP 10x10 mm package has 0.8 mm pitch pads - use NSMD land pattern with 0.4 mm pad width for reliable solder joint formation. Keep traces under the package to inner layers only to avoid shorts. Place the crystal or resonator within 5 mm of OSC1/OSC2 (pins 13/14) and guard the traces with a ground pour to minimize EMI. For ECAN applications, route CANTX (pin 41) and CANRX (pin 42) as a matched differential pair to the MCP2551 transceiver with characteristic impedance of 120 ohms.
Do not apply 5 V to the LF variant VDD when the part is configured for brown-out reset thresholds above 5 V - the LF silicon is rated to 5.5 V absolute maximum. When migrating from PIC18F4585 firmware to PIC18LF4585, check the configuration bits for the LF-specific oscillator and brown-out settings; otherwise the MCU may not start reliably at 3.3 V. The 'T' suffix denotes tape-and-reel packaging; for prototype builds in tray, order PIC18LF4585-I/PT instead. Always source from authorized distributors to avoid counterfeit parts.
معلومات الامتثال
RoHS compliant per Microchip product page. Industrial temperature grade -40 C to +85 C (not automotive AEC-Q100 qualified - select PIC18F4585T-I/PT-ESO variants for automotive).