PIC18LC658-I/PT - 8-bit MCU 32KB Flash, CAN, 64-Pin TQFP | Microchip
N.º da peça: PIC18LC658-I/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $11.5 | $11,50 |
| 10 | $10.35 | $103,50 |
| 100 | $9.2 | $920,00 |
| 500 | $8.05 | $4.025,00 |
| 1.000 | $7.3 | $7.300,00 |
PIC18LC658-I/PT Visão geral
What is a PIC18 LC microcontroller? PIC18 LC microcontrollers are low-power members of Microchip's 8-bit PIC18 family, optimized for applications that require lower core voltage operation than the standard PIC18F flash parts. They implement a Harvard-architecture RISC core with C-compiler-optimized instruction set, linear program-memory addressing up to 32 Kbytes, and linear data-memory addressing up to 4 Kbytes. They sit within the broader hierarchy: PIC18 LC -> PIC18 family -> 8-bit MCU -> microcontroller -> embedded controller -> semiconductor.
Key features include 52 digital I/O pins, an internal CAN 2.0B controller, USART, MSSP (SPI/I2C), 10-bit ADC, and capture/compare/PWM peripherals. Industrial-grade temperature rating (-40C to +85C) suits harsh-environment designs. The CAN module makes this part especially relevant for networked embedded systems where deterministic serial communication is required.
Technical depth: The 40MHz oscillator input drives a 4-phase internal pipeline producing 10 MIPS (million instructions per second) at 5V. Program memory uses 16-bit-wide flash cells accessed linearly via the program counter, while the 1536-byte SRAM is banked for C-friendly access via the FSR registers. The integrated CAN peripheral implements CAN 1.2, CAN 2.0A, and CAN 2.0B (active/standard identifier) frames with hardware acceptance filtering.
Typical applications include automotive body and chassis ECUs, industrial CAN nodes (sensor hubs, motor drives), building automation (HVAC controllers, BACnet/Modbus gateways), medical instrumentation, and embedded CAN-to-UART bridges. The 52 I/O pins and CAN module make it especially suited for distributed control networks where multiple microcontrollers must communicate over a robust differential bus.
Design consideration: Because the LC variant uses different on-chip program memory technology than the PIC18F family, code migration between LC and F parts requires re-verification of Vdd vs. speed tables and the erase/write algorithm. Designers should confirm peripheral register maps against the DS30475A datasheet errata.
This page synthesizes distributor pricing, drop-in alternatives from the PIC18 family, and practical design notes not found in the manufacturer datasheet.
Alternativas drop-in para PIC18LC658-I/PT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC18LC658-I/PT (mesmo formato e footprint) — diferindo em ADC, Core Architecture, MSL Level, Operating Temperature, Package.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F458-I/PT
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PIC18F6585-I/PT
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$6.95 / unidade
Ver ficha técnica →PIC18F8585-I/PT
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$11.05 / unidade
Ver ficha técnica →AT90CAN32-AUR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18LC658-I/PT Classificações máximas e características elétricas
| Architecture | 8-bit RISC (PIC18) |
| Family | PIC18 LC |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 1536 bytes |
| Number of I/O Pins | 52 |
| Encapsulamento / Caixa | 64-pin TQFP (PT) |
| Frequência máxima de clock | 40 MHz |
| Oscillator Type | External |
| Supply Voltage (Vdd) | 2.0 V to 5.5 V |
| Temperatura de operação | -40 C to +85 C (Industrial) |
| Integrated CAN Module | Yes (CAN 2.0B active) |
| USART | Yes |
| MSSP (SPI/I2C) | Yes |
| ADC | 10-bit |
| Tipo de montagem | Surface Mount |
| Packaging | Tube |
| Status RoHS | Compliant |
Configuração de pinos do PIC18LC658-I/PT
| Pino 1 | RC5 — Digital I/O / CCP module |
| Pino 2 | RC4 — Digital I/O / SPI SDO |
| Pino 3 | RC3 — Digital I/O / SPI SCK |
| Pino 4 | RC2 — Digital I/O / CCP PWM output |
| Pino 5 | RC1 — Digital I/O / CCP PWM output |
| Pino 6 | RC0 — Digital I/O / Timer oscillator |
| Pino 7 | OSC1 — External oscillator input |
| Pino 8 | OSC2 — External oscillator output |
| Pino 9 | RA0 — Digital I/O / analog input |
| Pino 10 | RA1 — Digital I/O / analog input |
| Pino 11 | RA2 — Digital I/O / analog input |
| Pino 12 | RA3 — Digital I/O / analog input / VREF+ |
| Pino 13 | RA4 — Digital I/O / analog input |
| Pino 14 | RA5 — Digital I/O / analog input / ADC ref |
| Pino 15 | Vss — Ground |
| Pino 16 | Vdd — Power supply |
| Pino 17 | RB0 — Digital I/O / external interrupt |
| Pino 18 | RB1 — Digital I/O |
| Pino 19 | RB2 — Digital I/O |
| Pino 20 | RB3 — Digital I/O |
| Pino 21 | RB4 — Digital I/O / interrupt-on-change |
| Pino 22 | RB5 — Digital I/O / interrupt-on-change |
| Pino 23 | RB6 — Digital I/O / interrupt-on-change |
| Pino 24 | RB7 — Digital I/O / interrupt-on-change |
| Pino 25 | RC6 — Digital I/O / TX (USART) |
| Pino 26 | RC7 — Digital I/O / RX (USART) |
| Pino 27 | RD0 — Digital I/O |
| Pino 28 | RD1 — Digital I/O |
| Pino 29 | RD2 — Digital I/O |
| Pino 30 | RD3 — Digital I/O |
| Pino 31 | RD4 — Digital I/O |
| Pino 32 | RD5 — Digital I/O |
| Pino 33 | RD6 — Digital I/O |
| Pino 34 | RD7 — Digital I/O |
| Pino 35 | Vss — Ground |
| Pino 36 | Vdd — Power supply |
| Pino 37 | RE0 — Digital I/O / CANRX |
| Pino 38 | RE1 — Digital I/O / CANTX |
| Pino 39 | RE2 — Digital I/O |
| Pino 40 | RE3 — Digital I/O |
| Pino 41 | RE4 — Digital I/O |
| Pino 42 | RE5 — Digital I/O |
| Pino 43 | RE6 — Digital I/O |
| Pino 44 | RE7 — Digital I/O |
| Pino 45 | Vss — Ground |
| Pino 46 | Vdd — Power supply |
| Pino 47 | RF0 — Digital I/O / analog input |
| Pino 48 | RF1 — Digital I/O / analog input |
| Pino 49 | RF2 — Digital I/O / analog input |
| Pino 50 | RF3 — Digital I/O / analog input |
| Pino 51 | RF4 — Digital I/O / analog input |
| Pino 52 | RF5 — Digital I/O / analog input |
| Pino 53 | RF6 — Digital I/O / analog input |
| Pino 54 | RF7 — Digital I/O / analog input |
| Pino 55 | RG0 — Digital I/O |
| Pino 56 | RG1 — Digital I/O |
| Pino 57 | RG2 — Digital I/O |
| Pino 58 | RG3 — Digital I/O |
| Pino 59 | RG4 — Digital I/O |
| Pino 60 | MCLR — Master clear reset input |
| Pino 61 | RG5 — Digital I/O |
| Pino 62 | NC — Not connected |
| Pino 63 | NC — Not connected |
| Pino 64 | AVdd — Analog power supply |
Aplicações típicas
PIC18LC658-I/PT é adequado para 6 aplicaçãos: Industrial CAN Sensor Hub, Building Automation Controller, Automotive Body Control Module, Medical Instrumentation Interface, Embedded CAN-to-UART Bridge, Motor Control Drive Interface.
Industrial CAN Sensor Hub
The PIC18LC658-I/PT fits an industrial CAN sensor hub with its integrated CAN 2.0B controller and 52 I/O pins. The 2.0-5.5V Vdd range allows direct connection to 3.3V sensor arrays, while 32KB flash holds the CANopen or DeviceNet stack and 1536B RAM buffers incoming frames. At 40 MHz / 10 MIPS, the core handles 1 kHz control loops while responding to remote CAN requests. The 10-bit ADC reads up to 8 analog sensors per hub.
Recomendado
Building Automation Controller
In building automation the PIC18LC658-I/PT provides reliable network connectivity over CAN or BACnet via its hardware CAN module and the 5V-tolerant I/O that interfaces with relays and triac drivers. The 32KB flash holds RTOS or cooperative scheduler code plus HVAC control algorithms, while 1536B RAM supports message queues and task stacks. The -40C to +85C industrial temperature rating suits unheated plant rooms and rooftop enclosures.
Recomendado
Automotive Body Control Module
The PIC18LC658-I/PT serves automotive body control nodes such as lighting controllers, mirror adjusters, and seat controllers. The integrated CAN 2.0B controller participates in body-network communication at 125-500 kbps while 52 I/O pins drive LED PWM outputs and switch inputs. Industrial temperature rating supports under-dash environments, and 32KB flash stores diagnostic handlers, while 1536B RAM stores fault logs and CAN frame buffers.
Recomendado
Medical Instrumentation Interface
For medical instrument interface boards the PIC18LC658-I/PT offers 5V tolerance for analog front-end integration and a CAN port for network communication with host systems. The 32KB flash holds calibration routines and operator UI state machines, while 1536B RAM supports data buffers for sensor readouts. The part's deterministic interrupt response and CAN hardware acceptance filtering minimize host-side polling overhead.
Recomendado
Embedded CAN-to-UART Bridge
As a CAN-to-UART bridge the PIC18LC658-I/PT uses its hardware CAN controller to receive CAN frames and re-serializes them over the USART for legacy host equipment. The 40 MHz clock gives sufficient throughput to handle 1 Mbps CAN traffic without dropped frames, while 32KB flash accommodates packet formatting and protocol conversion. The 5V-tolerant I/O simplifies legacy serial interface designs.
Recomendado
Motor Control Drive Interface
For stepper or BLDC motor drive interfaces the PIC18LC658-I/PT generates PWM signals on multiple I/O pins while monitoring current feedback via the 10-bit ADC. The CAN peripheral enables coordinated multi-axis motion control with cycle times under 1 ms. Industrial temperature rating suits factory-floor deployment, and 32KB flash stores the trapezoidal or sinusoidal commutation tables.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18LC658-I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F458-I/PT | PIC18F6585-I/PT | PIC18F8585-I/PT | AT90CAN32-AUR |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (PT) | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP - same |
| Program Memory | 32 KB | 32 KB | 96 KB | 96 KB | 32 KB |
| RAM Size | 1536 B | 2048 B | 2048 B | 3320 B | 2048 B |
| CAN Module | Yes (CAN 2.0B) | Yes | Yes | Yes | Yes |
| Min Vdd | 2.0 V | 4.2 V | 4.2 V | 4.2 V | 2.7 V |
| Max Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 16 MHz |
| Number of I/O | 52 | 32 | 52 | 68 | 53 |
Principais diferenciais
- Wide Vdd range enabling 3.3V CAN nodes (vs PIC18F458-I/PT)
- Higher flash density for firmware upgrade path (vs PIC18F458-I/PT)
- Deterministic CAN 2.0B hardware acceleration (vs AT90CAN32-AUR)
Notas de projeto
Decouple Vdd and AVdd pins with separate 100nF ceramic capacitors placed within 5mm of each Vdd pin; add a bulk 10uF tantalum or ceramic capacitor on each rail. The PIC18LC658 requires a stable 2.0-5.5V supply; Vdd ripple under 50mV prevents oscillator glitches. For CAN-bus-powered designs, isolate the bus-side and digital-side grounds through a 1kV-rated isolator to protect the MCU from bus transients.
Route the oscillator traces (OSC1/OSC2) within 10mm of the chip, keep them short and parallel, and guard with a ground pour to minimize EMI pickup. Place the MCLR pull-up (typically 10k) close to the MCU, and add a 1nF cap to ground if MCLR is exposed to external noise. Route CANRX/CANTX to the transceiver with matched 50 ohm traces or twisted pair, and place an optional ferrite bead for EMI suppression.
Do not assume the LC and F variants share identical flash erase/write routines - the LC variant's program memory architecture differs from the F variant. Verify voltage and frequency scaling tables in the datasheet; at 2.0V Vdd the maximum oscillator may drop to 4 MHz. Confirm that the CAN module is configured for the correct bus speed before enabling interrupts, and that oscillator configuration bits match external crystal characteristics.
Informações de conformidade
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC18F458-I/PT or automotive-grade PIC18 variants for automotive applications.
