PIC18LF4585-I/P - 8-Bit 40MHz 48KB Flash MCU w/ECAN | Microchip
Référence : PIC18LF4585-I/P ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $8.4 | $8,40 |
| 10 | $7.62 | $76,20 |
| 100 | $6.85 | $685,00 |
| 500 | $6.2 | $3 100,00 |
| 1 000 | $5.55 | $5 550,00 |
PIC18LF4585-I/P Présentation
An 8-bit microcontroller (MCU) is a single-chip computer built around a CPU with an 8-bit data path, on-chip flash program memory, RAM, and a rich set of peripherals (timers, ADC, communication ports). The PIC18F family, a subset of Microchip's PIC microcontroller hierarchy, extends the base PIC16 architecture with enhanced 16-bit instructions, linear memory addressing up to 2 MB, and C-optimized design models. PIC18F parts sit within the broader taxonomy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The 'LF' prefix denotes the low-voltage (2.0-3.3V) core variant, while '4585' identifies the specific pinout/memory/peripheral profile.
Key features of the PIC18LF4585-I/P include 48KB flash, 3328 bytes RAM, 256 bytes EEPROM, hardware ECAN module, 10-bit ADC with up to 13 channels, two USART modules, MSSP (SPI/I2C), two 8-bit and three 16-bit timers, nanoWatt power management, and an extended -40C to +85C industrial operating range. The 'I' suffix denotes the industrial temperature grade.
The PIC18LF4585-I/P uses an advanced RISC Harvard architecture with separate program and data buses, a 16-bit instruction word, and an 8-level hardware stack. Internal PLL options multiply the external oscillator to achieve 40MHz operation, while nanoWatt technology provides multiple idle and sleep modes for battery-friendly operation. Hardware ECAN eliminates CPU overhead for CAN frame handling, freeing the core for application logic.
Typical applications include automotive body controllers and HVAC modules, industrial CAN-based sensor networks, CAN-to-UART bridges, embedded data loggers, and low-voltage battery-powered instrumentation. The wide 2.0V-3.3V core voltage range (with 5V-tolerant I/O in some configurations) supports both 3.3V-only and mixed-voltage designs.
When designing with this device, ensure the ECAN bus is terminated with 120 ohm resistors at each end of the bus, and use shielded twisted pair cable for noisy industrial environments. The internal oscillator may be used to save BOM cost, but a crystal is recommended for time-critical communications such as CAN at higher bit rates.
This page synthesizes distributor pricing, drop-in alternatives drawn from the same Microchip PIC18F family, and practical design notes not found in the manufacturer datasheet.
Alternatives de remplacement direct pour PIC18LF4585-I/P — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC18LF4585-I/P (même facteur de forme et même empreinte) — différant par Operating Temperature, Package, Program Memory (Flash), Mounting Type, Timers.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F4585-I/PT
✅ Remplacement direct✓ En stock
$5.73 / unité
Voir la fiche technique →PIC18LF4580-I/P
✅ Remplacement direct✓ En stock
$4.85 / unité
Voir la fiche technique →PIC18LF4510-I/P
✅ Remplacement direct✓ En stock
$5.34 / unité
Voir la fiche technique →PIC18F4580-I/P
✅ Remplacement direct✓ En stock
$5.1 / unité
Voir la fiche technique →PIC18F4510-I/P
✅ Remplacement direct✓ En stock
$5.27 / unité
Voir la fiche technique →PIC18LF4585-I/P Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC18F (8-bit RISC Harvard) |
| Program Memory (Flash) | 48 KB (24K x 16 words) |
| RAM | 3328 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 40 MHz (200 ns instruction cycle) |
| Operating Voltage (Vdd) | 2.0 V to 3.3 V (LF low-voltage core) |
| Communication | ECAN, 2x USART, MSSP (SPI/I2C) |
| CAN Module | ECAN 2.0B active compliant |
| Température de fonctionnement | -40 C to +85 C (Industrial grade, 'I' suffix) |
| Boîtier | 40-pin PDIP (DIP-40) |
| Type de montage | Through-Hole |
| Niveau MSL | 1 (unlimited floor life at <30 C / 85% RH) |
| Lead-Free / RoHS | Lead-free finish, RoHS compliant (Microchip 'P' package suffix) |
| Power-Saving Modes | nanoWatt technology (idle, sleep, deep sleep) |
| Instruction Set | PIC18F enhanced 16-bit instructions, 75 base instructions |
Configuration des broches de PIC18LF4585-I/P
| Broche 1 | MCLR — Master Clear (reset) input, active low |
| Broche 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Broche 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Broche 4 | RA2/AN2/Vref- — PORTA bit 2 / analog input 2 / ADC Vref- |
| Broche 5 | RA3/AN3/Vref+ — PORTA bit 3 / analog input 3 / ADC Vref+ |
| Broche 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Broche 7 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| Broche 8 | RE0/RD/AN5 — PORTE bit 0 / read control / analog input 5 |
| Broche 9 | RE1/WR/AN6 — PORTE bit 1 / write control / analog input 6 |
| Broche 10 | RE2/CS/AN7 — PORTE bit 2 / chip select / analog input 7 |
| Broche 11 | VDD — Positive supply (2.0-3.3V) |
| Broche 12 | VSS — Ground reference |
| Broche 13 | OSC1/CLKI/RA7 — Crystal oscillator input / external clock / PORTA bit 7 |
| Broche 14 | OSC2/CLKO/RA6 — Crystal oscillator output / clock output / PORTA bit 6 |
| Broche 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Broche 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 module |
| Broche 17 | RC2/CCP1 — PORTC bit 2 / CCP1 module (PWM/capture/compare) |
| Broche 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Broche 19 | RD0/PSP0/C1IN+ — PORTD bit 0 / parallel slave port data bit 0 / comparator 1 input + |
| Broche 20 | RD1/PSP1/C1IN- — PORTD bit 1 / PSP data 1 / comparator 1 input - |
| Broche 21 | RD2/PSP2/C2IN+ — PORTD bit 2 / PSP data 2 / comparator 2 input + |
| Broche 22 | RD3/PSP3/C2IN- — PORTD bit 3 / PSP data 3 / comparator 2 input - |
| Broche 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Broche 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Broche 25 | RC6/TX/CK — PORTC bit 6 / USART async transmit / USART sync clock |
| Broche 26 | RC7/RX/DT — PORTC bit 7 / USART async receive / USART sync data |
| Broche 27 | RD4/PSP4/ECANRX — PORTD bit 4 / PSP data 4 / ECAN receive input |
| Broche 28 | RD5/PSP5/ECANTX — PORTD bit 5 / PSP data 5 / ECAN transmit output |
| Broche 29 | RD6/PSP6/TX2 — PORTD bit 6 / PSP data 6 / USART2 transmit |
| Broche 30 | RD7/PSP7/RX2 — PORTD bit 7 / PSP data 7 / USART2 receive |
| Broche 31 | VSS — Ground reference (second bond pad) |
| Broche 32 | VDD — Positive supply (second bond pad) |
| Broche 33 | RB0/INT0/FLT0 — PORTB bit 0 / external interrupt 0 / PWM fault input |
| Broche 34 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Broche 35 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Broche 36 | RB3/INT3/CCP2A — PORTB bit 3 / external interrupt 3 / CCP2 alternate |
| Broche 37 | RB4/KBIANLKO — PORTB bit 4 / interrupt-on-change |
| Broche 38 | RB5/KBIANLKI/PGM — PORTB bit 5 / interrupt-on-change / LVP programming |
| Broche 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Broche 40 | RB7/PGD — PORTB bit 7 / ICSP data |
Applications typiques
PIC18LF4585-I/P convient pour 7 applications: Automotive CAN Body Controller, Industrial CANopen Sensor Hub, CAN-to-UART Protocol Bridge, Battery-Powered Data Logger, Embedded HVAC Controller Node, CAN-Based Motor Drive Slave, Low-Voltage Medical Device Interface.
Automotive CAN Body Controller
The PIC18LF4585-I/P is well suited to automotive body and chassis ECAN nodes because the integrated CAN 2.0B active module handles arbitration, error detection, and frame filtering in hardware. At a 3.3V supply and 40MHz CPU speed, it can poll CAN bus traffic, debounce switch inputs, and drive LED or relay outputs at the standard 500 kbps automotive bit rate without software bit-banging overhead. With 48KB flash, the MCU fits CANopen or J1939 stack libraries plus application logic for door modules, HVAC controllers, or seat controllers. Place 120 ohm termination at each end of the bus and use shielded twisted pair for noisy under-harness routing.
Recommandé
Industrial CANopen Sensor Hub
In industrial CANopen networks, the PIC18LF4585-I/P serves as a sensor hub MCU aggregating analog and digital signals onto a single CAN bus. The 10-bit ADC with multiple input channels reads analog sensors, while ECAN broadcasts PDO messages at 250 kbps typical for factory automation. The low-voltage 2.0-3.3V core lets the design run from a single 3.3V LDO rail, simplifying the power tree. The 3328-byte RAM is adequate for CANopen object dictionary entries and a small process-image buffer, and the -40C to +85C industrial temperature range supports factory-floor deployments.
Recommandé
CAN-to-UART Protocol Bridge
The PIC18LF4585-I/P bridges CAN bus traffic to a UART link for legacy RS-232/RS-485 equipment that lacks native CAN. The two on-chip USARTs run at up to 5 Mbps, while the ECAN module filters incoming CAN IDs in dedicated buffers to offload the CPU. Engineers often use this topology to add CAN connectivity to motor drives, PLCs, or instrumentation without redesigning the host firmware. The 48KB flash accommodates the full CAN-to-UART gateway firmware plus a small CLI parser for diagnostic commands.
Recommandé
Battery-Powered Data Logger
Battery-powered remote data loggers benefit from the PIC18LF4585-I/P's nanoWatt technology, which offers idle, sleep, and deep-sleep modes drawing microamp-level current between sensor reads. The 2.0V minimum Vdd supports operation from a single lithium primary cell down to its end-of-life voltage. ECAN enables log retrieval over a wired industrial bus when the logger is brought in for service. The 256-byte EEPROM stores calibration constants and last-known configuration across power cycles without external non-volatile memory.
Recommandé
Embedded HVAC Controller Node
The PIC18LF4585-I/P is a strong fit for distributed HVAC controller nodes that communicate over a CAN backbone. The ECAN module handles time-critical fan and damper commands while the 16-bit timers drive PWM outputs for variable-speed blower motors. The 3.3V core lets the design share a common low-voltage rail with Wi-Fi or BLE co-processors. The -40C to +85C industrial operating range covers rooftop and basement mechanical room installations without additional thermal hardening.
Recommandé
CAN-Based Motor Drive Slave
In multi-axis motor drive systems, the PIC18LF4585-I/P acts as a CANopen DS402 slave receiving position, velocity, and torque commands over ECAN. The PWM modules generate the gating signals for a downstream three-phase inverter bridge, and the 10-bit ADC samples phase currents for closed-loop control. The 48KB flash fits DS402 state machine code plus a small CSP (CANopen Stack Profile) library, while the industrial temperature grade supports cabinet-mounted servo applications.
Recommandé
Low-Voltage Medical Device Interface
Medical instrumentation with 3.3V-only internal rails, such as portable patient monitors and bedside sensor hubs, can use the PIC18LF4585-I/P as a CAN interface to a central bedside display. The low-voltage core, small PDIP package, and hardware ECAN module simplify BOM and PCB layout. The -40C to +85C industrial temperature range covers clinical environments, and the nanoWatt sleep modes extend battery life between patient transfers. Note: this part is not medical-grade qualified; medical safety certification requires additional system-level testing.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18LF4585-I/P — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18F4585-I/P | PIC18LF4580-I/P | PIC18LF4510-I/P | PIC18F4580-I/P | PIC18F4510-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-40 (DIP-40) | PDIP-40 (DIP-40) - same | PDIP-40 (DIP-40) - same | PDIP-40 (DIP-40) - same | PDIP-40 (DIP-40) - same | PDIP-40 (DIP-40) - same |
| Program Memory (Flash) | 48 KB | 48 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| RAM | 3328 bytes | 3328 bytes | 1536 bytes | 1536 bytes | 1536 bytes | 1536 bytes |
| Operating Voltage (Vdd) | 2.0 V to 3.3 V (LF low-voltage) | 4.2 V to 5.5 V (F) | 2.0 V to 3.3 V (LF) | 2.0 V to 3.3 V (LF) | 4.2 V to 5.5 V (F) | 4.2 V to 5.5 V (F) |
| ECAN Module | Yes (CAN 2.0B active) | Yes (CAN 2.0B active) | Yes (CAN 2.0B active) | Yes | Yes (CAN 2.0B active) | Yes |
| ADC Channels | 10-bit, up to 13 channels | 10-bit, up to 13 channels | 10-bit, up to 11 channels | 10-bit, 8 channels | 10-bit, up to 11 channels | 10-bit, 8 channels |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
Principaux différenciateurs
- Low-voltage 2.0-3.3V core with same memory/peripheral map as 5V F variant (vs PIC18F4585-I/P)
- Hardware ECAN 2.0B active module (vs PIC18LF4553-I/P (USB variant, no CAN))
- 48KB flash versus 32KB on 4580/4510 cousins (vs PIC18LF4580-I/P)
Notes de conception
The PIC18LF4585-I/P requires a clean 3.3V supply within 2.0V-3.3V; place a 100nF ceramic decoupling capacitor as close as possible to each Vdd/Vss pair (pins 11/12 and 31/32), plus a bulk 10uF tantalum or ceramic on the supply rail. Estimated: at 40MHz CPU and ECAN active, typical Vdd current is 25-30 mA; nanoWatt sleep modes drop this to single-digit microamps for battery-friendly designs. Add a ferrite bead on the supply rail if the design shares 3.3V with a noisy RF or motor stage.
Route the ECAN differential pair (RD5/ECANTX via MCP2551 to CANH/CANL, RD4/ECANRX from transceiver) as a 100-ohm differential microstrip with matched length and continuous ground reference for EMI control. Place the MCP2551 CAN transceiver within 50mm of the MCU ECAN pins to minimize reflection. Decouple Vdd on the transceiver separately from the MCU to keep bus faults from collapsing the MCU supply.
Do not apply 5V signals to the PIC18LF4585-I/P I/O pins without verifying the absolute maximum rating; the LF core's Vih/Vil thresholds are TTL-compatible but the absolute-max Vih on most pins is Vdd + 0.3V, so a 5V signal will over-stress the pin. Use a level translator (e.g., TXB0104) when interfacing to 5V peripherals. Also ensure the MCLR pin has the correct 10 kohm pull-up to Vdd (never float it) and that the ICSP PGD/PGC pins have no large capacitance that would block in-circuit programming.
For CAN bit rates above 500 kbps, the ECAN module requires a tight oscillator tolerance: use a 20MHz or 40MHz crystal with 30 ppm tolerance rather than the internal 8 MHz RC oscillator. Enable the PLL in configuration bits to derive 40MHz Fosc from a 10MHz crystal if the application needs the lowest EMI. Add a 120 ohm termination resistor at each end of the bus, and avoid stub lengths greater than 1/10 of the signal rise time as recommended by the CAN physical-layer specification.
Informations de conformité
RoHS compliant per Microchip product page; 'P' package suffix denotes lead-free PDIP finish. Not AEC-Q100 qualified - for automotive-grade PIC18 ECAN parts consider PIC18F4585-I/PT or automotive-qualified members of the PIC18F family. REACH compliance per Microchip product declaration.
