PIC18C658-I/PT - 8-bit 40MHz 32KB OTP MCU w/CAN | Microchip
N.º da peça: PIC18C658-I/PT ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $9.1 | $9,10 |
| 10 | $8.19 | $81,90 |
| 100 | $7.27 | $727,00 |
| 500 | $6.36 | $3.180,00 |
| 1.000 | $5.45 | $5.450,00 |
PIC18C658-I/PT Visão geral
What is an 8-bit OTP microcontroller? An OTP MCU is a microcontroller whose program memory can be written once during production programming, after which the code becomes permanent - similar to a masked-ROM device but with the flexibility of late-stage firmware customization. Within the broader taxonomy, this places PIC18C658 in the 8-bit MCU -> PIC microcontroller -> microcontroller -> embedded processing IC hierarchy. The integrated CAN module makes it specifically a "MCU with on-board communication peripheral," sitting at the intersection of general-purpose control and automotive/industrial networking silicon.
Key differentiating features include a 40 MHz maximum clock speed (10 MIPS throughput), an enhanced 16-bit instruction set with 77 instructions, a 10-bit ADC, three timers, a USART, an MSSP (SPI/I2C) port, and the integrated CAN 2.0B module. The OTP memory suits low-volume production runs and field-programmable prototypes where mask-ROM tooling costs are prohibitive. The 64-pin TQFP package exposes enough I/O for human-interface panels, multi-drop sensor arrays, and CAN bus nodes.
Architecturally, the PIC18C658 employs a Harvard architecture with separate program and data buses, an 8-bit ALU, and a hardware multiplier for single-cycle 8x8 operations. The integrated CAN engine handles full CAN 2.0B active frame transmission/reception with three transmit and two receive buffers, offloading the CPU from bit-level protocol work and enabling deterministic network behaviour.
Typical applications include automotive body and chassis networks (CAN nodes for window/lights/seat modules), industrial CANopen/J1939 slave nodes, building automation (HVAC controllers, lighting gateways), embedded control with on-chip networking, and low-volume OEM instrumentation. The industrial temperature range (-40°C to +85°C, "I" suffix) supports factory-floor and automotive under-hood environments.
When designing with PIC18C658-I/PT, ensure OTP programming is performed before final board assembly using a Microchip MPLAB PM3 or ICD2 programmer. Because OTP cannot be erased, firmware verification (read-back compare) is mandatory before bulk programming. For new designs, evaluate the flash-based PIC18F6585 as a more flexible alternative.
This page consolidates distributor pricing, drop-in same-package alternatives, application-specific design notes, and parametric comparisons not aggregated on any single distributor page - an information-gain reference for engineers evaluating, sourcing, or replacing this legacy Microchip MCU.
Alternativas drop-in para PIC18C658-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 PIC18C658-I/PT (mesmo formato e footprint) — diferindo em Core Architecture, Package, Program Memory Type, Operating Temperature, Program Memory Size.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F6585-I/PT
✅ Drop-In✓ Em estoque
$6.95 / unidade
Ver ficha técnica →PIC18F6680-I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18C858-I/PT
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$9.95 / unidade
Ver ficha técnica →PIC18C601-I/PT
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$6.08 / unidade
Ver ficha técnica →PIC18C658-I/PT Classificações máximas e características elétricas
| Core Architecture | PIC 8-bit (Harvard) |
| Family | PIC® 18C |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 32 KB (16K x 16) |
| RAM | 1536 bytes |
| Frequência máxima de clock | 40 MHz |
| Instruction Throughput | 10 MIPS |
| Operating Voltage | 5 V |
| I/O Pins | 52 |
| ADC | 10-bit (channels not in verified data) |
| Timers | 3 (per datasheet family) |
| Communication Interfaces | CAN 2.0B, USART, MSSP (SPI/I2C) |
| Encapsulamento | 64-pin TQFP (10x10 mm) |
| Temperatura de operação | -40C to +85C (Industrial, "I" suffix) |
| Tipo de montagem | Surface Mount |
Configuração de pinos do PIC18C658-I/PT
| Pino 1 | MCLR — Master Clear (reset) input |
| Pino 2 | OSC1 — Oscillator input |
| Pino 3 | OSC2 — Oscillator output |
| Pino 4 | RA0/AN0 — PORTA bit 0 / ADC input 0 |
| Pino 5 | RA1/AN1 — PORTA bit 1 / ADC input 1 |
| Pino 6 | RA2/AN2 — PORTA bit 2 / ADC input 2 |
| Pino 7 | RA3/AN3 — PORTA bit 3 / ADC input 3 |
| Pino 8 | RA4/TOCKI — PORTA bit 4 / Timer0 clock input |
| Pino 9 | RA5/AN4/SS — PORTA bit 5 / ADC input 4 / SPI slave select |
| Pino 10 | VSS — Ground |
| Pino 11 | VDD — Positive supply (5 V) |
| Pino 12 | RB0/INT — PORTB bit 0 / external interrupt |
| Pino 13 | RB1 — PORTB bit 1 |
| Pino 14 | RB2 — PORTB bit 2 |
| Pino 15 | RB3 — PORTB bit 3 |
| Pino 16 | RB4 — PORTB bit 4 |
| Pino 17 | RB5 — PORTB bit 5 |
| Pino 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pino 19 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pino 20 | VSS — Ground |
| Pino 21 | VDD — Positive supply (5 V) |
| Pino 22 | RC0/T1CKI — PORTC bit 0 / Timer1 clock input |
| Pino 23 | RC1/CCP2 — PORTC bit 1 / Capture/Compare/PWM 2 |
| Pino 24 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Pino 25 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pino 26 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pino 27 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pino 28 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Pino 29 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Pino 30 | VSS — Ground |
| Pino 31 | VDD — Positive supply (5 V) |
| Pino 32 | RD0 — PORTD bit 0 |
| Pino 33 | RD1 — PORTD bit 1 |
| Pino 34 | RD2 — PORTD bit 2 |
| Pino 35 | RD3 — PORTD bit 3 |
| Pino 36 | RD4 — PORTD bit 4 |
| Pino 37 | RD5 — PORTD bit 5 |
| Pino 38 | RD6 — PORTD bit 6 |
| Pino 39 | RD7 — PORTD bit 7 |
| Pino 40 | VSS — Ground |
| Pino 41 | VDD — Positive supply (5 V) |
| Pino 42 | RE0/RD — PORTE bit 0 / parallel slave port read |
| Pino 43 | RE1/WR — PORTE bit 1 / parallel slave port write |
| Pino 44 | RE2/CS — PORTE bit 2 / parallel slave port chip select |
| Pino 45 | RE3 — PORTE bit 3 |
| Pino 46 | CANTX — CAN transmit output (to transceiver) |
| Pino 47 | CANRX — CAN receive input (from transceiver) |
| Pino 48 | VDD — Positive supply (5 V) |
| Pino 49 | VSS — Ground |
| Pino 50 | RF0 — PORTF bit 0 |
| Pino 51 | RF1 — PORTF bit 1 |
| Pino 52 | RF2 — PORTF bit 2 |
| Pino 53 | RF3 — PORTF bit 3 |
| Pino 54 | RF4 — PORTF bit 4 |
| Pino 55 | RF5 — PORTF bit 5 |
| Pino 56 | RF6 — PORTF bit 6 |
| Pino 57 | RF7 — PORTF bit 7 |
| Pino 58 | RG0 — PORTG bit 0 |
| Pino 59 | RG1 — PORTG bit 1 |
| Pino 60 | RG2 — PORTG bit 2 |
| Pino 61 | RG3 — PORTG bit 3 |
| Pino 62 | RG4 — PORTG bit 4 |
| Pino 63 | VSS — Ground |
| Pino 64 | VDD — Positive supply (5 V) |
Aplicações típicas
PIC18C658-I/PT é adequado para 6 aplicaçãos: Automotive CAN Body Electronics, Industrial CANopen Slave Nodes, Building Automation Gateways, Embedded Sensor Hubs with CAN Connectivity, Low-Volume OEM Instrumentation, CAN-Based Motor Control Nodes.
Automotive CAN Body Electronics
The PIC18C658-I/PT's integrated CAN 2.0B controller with three transmit and two receive buffers makes it suitable for automotive body electronics nodes such as window lift, seat control, lighting modules, and mirror actuators. Operating from a 5 V supply and industrial -40C to +85C temperature range, it tolerates cabin and trunk-mounted environments. The 52 I/O pins can drive relay coils, read switch positions, and PWM LEDs directly, while the CAN engine offloads bus protocol from the CPU for deterministic 125 kbps to 1 Mbps network behaviour.
Recomendado
Industrial CANopen Slave Nodes
For factory-automation CANopen networks, the PIC18C658-I/PT provides the CAN 2.0B hardware backbone needed to implement slave-node profiles (DS301/DS401). The 32 KB OTP program memory holds CANopen stack and application firmware for sensor/actuator nodes; the 1536 bytes RAM supports PDO/SDO buffering. The 40 MHz / 10 MIPS core executes protocol state machines with headroom, while the 10-bit ADC reads analog sensor inputs. Note: OTP memory requires final firmware lock-in at production - flash-based PIC18F6585 is preferred for late-stage protocol changes.
Recomendado
Building Automation Gateways
In HVAC controllers, lighting gateways, and access-control panels, the PIC18C658-I/PT serves as the local supervisory MCU bridging CAN-bus building networks with local I/O. The 52 I/O can scan keypads, drive triac outputs for lighting dimmers, read thermistor inputs, and control damper motors. The integrated CAN module enables BACnet/MS-TP to CAN bridging or LonWorks-to-CAN protocol translation. The 64-pin TQFP package suits 4-layer control board designs with adequate grounding for EMI-sensitive analog sensor front-ends.
Recomendado
Embedded Sensor Hubs with CAN Connectivity
The PIC18C658-I/PT's combination of 10-bit ADC, 52 I/O, and CAN 2.0B makes it a fit for distributed sensor hubs that aggregate analog/digital signals and broadcast them over a CAN bus to a central controller. Typical deployments include machine-vision illumination controllers, multi-zone temperature transmitters, and hydraulic pressure monitoring nodes. The 32 KB OTP program memory holds device firmware plus calibration constants; the industrial temperature range suits outdoor and cabinet-mounted installations.
Recomendado
Low-Volume OEM Instrumentation
For low-volume OEM products (annual production hundreds to a few thousand units), the PIC18C658-I/PT's OTP memory eliminates the mask-ROM NRE charges that flash-killed RISC MCUs would also avoid, while keeping the cost-of-programming low with a single MPLAB PM3 production run. The PIC18 instruction set is well-documented and supported by MPLAB X IDE, accelerating firmware development. Typical instruments include laboratory data loggers, custom test fixtures, and specialized medical monitoring peripherals where CAN networking simplifies multi-instrument synchronization.
Recomendado
CAN-Based Motor Control Nodes
The PIC18C658-I/PT can act as a CAN-connected brushless DC or stepper motor controller node, with three on-chip timers providing PWM generation, capture/compare for feedback, and a tick timer for commutation. The integrated CAN bus allows centralized motion controllers to command torque, speed, and position profiles to many distributed motor nodes over a single twisted pair. The 5 V supply and industrial temperature range suit machine-tool and packaging-equipment environments; the 52 I/O enables parallel multi-axis control from a single MCU.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18C658-I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F6585-I/PT | PIC18F6680-I/PT | PIC18C601-I/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (10x10) | TQFP-64 (10x10) - same | TQFP-64 (10x10) - same | TQFP-64 (10x10) - same |
| Core / Architecture | PIC18C, 8-bit, 40 MHz | PIC18F, 8-bit, 40 MHz - same core | PIC18F, 8-bit, 40 MHz - same core | PIC18C, 8-bit, 40 MHz - same core |
| Memory Type | OTP (write-once) | Flash (rewritable) | Flash (rewritable) | OTP (write-once) |
| CAN Module | CAN 2.0B integrated | CAN 2.0B integrated - same | CAN 2.0B integrated - same | No CAN module |
| I/O Pins | 52 | 52 - same | 52 - same | 52 - same |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Lifecycle Status | Obsolete (PIC18C family EOL) | Active (flash successor) | Active (flash successor) | Obsolete (same PIC18C family) |
Principais diferenciais
- Integrated CAN 2.0B controller on-chip (vs PIC18C601-I/PT)
- Flash memory for in-field firmware updates (vs PIC18F6585-I/PT)
- Higher program memory density (vs PIC18F6680-I/PT)
Notas de projeto
OTP memory can be written only once - there is no erase operation. Perform read-back verification with the MPLAB PM3 programmer after every production OTP burn to detect bit failures, and complete all firmware development on a flash-based equivalent (PIC18F6585) before committing to OTP. A single OTP write error scrapping a programmed part cannot be undone in-circuit.
The TQFP-64 (10x10 mm) package requires a 4-layer PCB with a continuous ground plane beneath the die for EMI and thermal performance. Place the MCP2551 CAN transceiver within 25 mm of the CANTX/CANRX pins (pins 46/47) and route the differential CAN bus traces with 120-ohm characteristic impedance and matched lengths. Decouple each VDD pin (11, 21, 31, 41, 48, 64) with a 100 nF ceramic capacitor plus a 10 uF bulk capacitor at the package entry.
The PIC18C658-I/PT operates from a single 5 V supply. Estimated supply current at 40 MHz with CAN active is approximately 25-35 mA; add 5-8 mA per output pin driving a 20 mA LED load. A MCP130 voltage supervisor or RC reset on MCLR (pin 1) is recommended for industrial environments to prevent brown-out code execution. The internal POR (power-on reset) is enabled by configuration fuses but should be supplemented with an external reset circuit for noisy CAN bus environments.
Estimated: At continuous 40 MHz operation, ambient +25C, the PIC18C658-I/PT dissipates approximately 0.15 W internal power. The TQFP-64 (10x10) has theta_JA of approximately 50 C/W on a 4-layer JEDEC test board, giving a junction-to-ambient rise of about 7.5 C - well within the -40C to +85C industrial range. No external heatsink required; however, a continuous ground plane on the top and bottom layers is essential to achieve the rated theta_JA.
Informações de conformidade
Compliance data not found in verified web data. PIC18C family predates widespread RoHS adoption; many PIC18C658-I/PT variants are non-RoHS. AEC-Q100 qualification not applicable for industrial-grade 8-bit MCU; automotive designs should select PIC18F6680 with AEC-Q100 grade.
