PIC18LC658T-I/L - 8-Bit MCU 32KB OTP CAN PLCC-68 | Microchip
料号： PIC18LC658T-I/L ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $18.45 | $18.45 |
| 10 | $16.9 | $169.00 |
| 100 | $15.05 | $1,505.00 |
| 500 | $13.4 | $6,700.00 |
| 1,000 | $11.85 | $11,850.00 |
| 3,000 | $10.5 | $31,500.00 |
PIC18LC658T-I/L 概述
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, and peripherals onto one die. The PIC18 family specifically uses a modified Harvard RISC architecture with 16-bit opcodes and 8-bit data paths, sitting in Microchip's hierarchy of PIC10/12/16/18/24/32 families and the broader 8-bit MCU class. PIC18C variants historically targeted CAN-based industrial and automotive networking because they pair the PIC18 core with a hardware CAN controller - significant when serial protocols such as SPI, I2C, and UART (USART) cannot meet deterministic real-time bus requirements. CAN remains widely used in industrial automation, sensor instrumentation, and automotive body/comfort networking.
Key features include 52 digital I/O pins, an 8-channel 10-bit ADC, two 8-bit plus two 16-bit timers (4 timers total), one 16-bit capture/compare/PWM module, a hardware CAN 2.0B controller, and four interrupt sources. The Harvard bus provides separate 16-bit program and 8-bit data paths for deterministic execution, while the OTP program memory allows rapid prototyping for engineers refining code in late development stages. Industrial-grade operating range, low power consumption, and peripheral integration target automotive, instrumentation, and consumer markets.
The device is fabricated on a non-volatile CMOS process optimized for code-density and power efficiency. The integrated CAN module supports standard 11-bit and extended 29-bit identifiers, plus acceptance filters that offload message filtering from the CPU. The PIC18 instruction set is C-compiler optimized, allowing code development in high-level C while still achieving the deterministic timing the architecture is known for.
Typical applications include CAN-based industrial sensor networks, HVAC control modules, automotive body-control and body-comfort networks, building automation gateways, and embedded instrumentation. Its 32 KB OTP memory suits programs sized around 24-26 KB C-source compiled code. Design engineers also deploy it in legacy systems, transportation equipment, and instrumentation requiring CAN 2.0B hardware but minimal software complexity.
Key design considerations include budgeting interrupt latency for CAN message handling and ensuring the PLCC-68 socket or reflow profile matches standard JEDEC J-leaded pads. The industrial temperature range covers most outdoor and factory-floor requirements but excludes AEC-Q100 automotive Grade-1 applications - choose the PIC18F6585 automotive variant for AEC-Q100 qualified designs.
This page synthesizes distributor pricing, datasheet specs, drop-in same-family alternatives, and practical engineering notes not all present in the standalone datasheet.
直接替换替代料： PIC18LC658T-I/L ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18LC658T-I/L （相同外形与封装尺寸） ——差异在于 CAN Module, Communication Interfaces, Operating Temperature, Program Memory Type, Timers.
快速对比工具——选择替代料号进行并排对比：
PIC18F6585-I/L
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F6585T-I/L
✅ 直接替换📋 参考替代料（不在目录中）
PIC18C658T-I/L
✅ 直接替换✓ 有现货
$9.55 / 个
查看数据手册 →PIC18C658-I/L
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F6680-I/L
✅ 直接替换📋 参考替代料（不在目录中）
PIC18LC658T-I/L 最大额定值与电气特性
| Manufacturer | Microchip Technology |
| Series | PIC 18C |
| Core Processor | PIC |
| Core Size | 8-Bit |
| Program Memory Type | OTP |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 1.5 KB |
| Data Memory Addressing | Linear up to 4 Kbytes |
| Maximum Clock Speed | 40 MHz (10 MIPS) |
| Supply Voltage (Vcc/Vdd) | 3.0 V to 5.5 V |
| Number of I/O Pins | 52 |
| 封装 / 外壳 | 68-PLCC (24.23 x 24.23 mm) |
| 工作温度 | -40 °C to +85 °C (Industrial) |
| A/D Channels x Resolution | 8 x 10-bit |
| Communication Interfaces | CAN, I2C, SPI, UART/USART |
| CAN Module | CAN 2.0B (hardware, 11-bit/29-bit identifiers) |
| Timers | 2 x 8-bit + 2 x 16-bit |
| 安装类型 | Surface Mount |
| IC Type | High-performance MCU with CAN module |
PIC18LC658T-I/L 引脚配置
| 引脚 1 | NC — Not connected (per datasheet) |
| 引脚 2 | RB0/INT0 — Digital I/O port B bit 0 / External interrupt 0 |
| 引脚 3 | RB1/INT1 — Digital I/O port B bit 1 / External interrupt 1 |
| 引脚 4 | RB2/INT2/CANTX — Digital I/O port B bit 2 / External interrupt 2 / CAN TX |
| 引脚 5 | RB3/CANRX — Digital I/O port B bit 3 / CAN RX |
| 引脚 6 | RB4 — Digital I/O port B bit 4 (interrupt-on-change) |
| 引脚 7 | RB5 — Digital I/O port B bit 5 (interrupt-on-change) |
| 引脚 8 | RB6/PGC — Digital I/O port B bit 6 / ICSP clock (programming) |
| 引脚 9 | RB7/PGD — Digital I/O port B bit 7 / ICSP data (programming) |
| 引脚 10 | VSS — Ground reference |
| 引脚 11 | VDD — Positive supply voltage (3.0-5.5 V for 'LC' variant) |
| 引脚 12 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| 引脚 13 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| 引脚 14 | RA0/AN0 — Digital I/O port A bit 0 / Analog input channel 0 |
| 引脚 15 | RA1/AN1 — Digital I/O port A bit 1 / Analog input channel 1 |
| 引脚 16 | RA2/AN2 — Digital I/O port A bit 2 / Analog input channel 2 |
| 引脚 17 | RA3/AN3 — Digital I/O port A bit 3 / Analog input channel 3 |
| 引脚 18 | RA4/TOCKI — Digital I/O port A bit 4 / Timer0 clock input |
| 引脚 19 | RA5/AN4 — Digital I/O port A bit 5 / Analog input channel 4 |
| 引脚 20 | AVDD — Analog supply voltage (ADC reference) |
| 引脚 21 | AVSS — Analog ground (ADC reference) |
| 引脚 22 | RC0/T1OSO/T1CKI — Digital I/O port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| 引脚 23 | RC1/T1OSI/CCP2 — Digital I/O port C bit 1 / Timer1 oscillator input / Capture-Compare-PWM 2 |
| 引脚 24 | RC2/CCP1 — Digital I/O port C bit 2 / Capture-Compare-PWM 1 |
| 引脚 25 | RC3/SCK/SCL — Digital I/O port C bit 3 / SPI clock / I2C clock |
| 引脚 26 | RC4/SDI/SDA — Digital I/O port C bit 4 / SPI data in / I2C data |
| 引脚 27 | RC5/SDO — Digital I/O port C bit 5 / SPI data out |
| 引脚 28 | RC6/TX/CK — Digital I/O port C bit 6 / USART async TX / USART sync clock |
| 引脚 29 | RC7/RX/DT — Digital I/O port C bit 7 / USART async RX / USART sync data |
| 引脚 30 | RD0/PSP0 — Digital I/O port D bit 0 / Parallel Slave Port bit 0 |
| 引脚 31 | RD1/PSP1 — Digital I/O port D bit 1 / Parallel Slave Port bit 1 |
| 引脚 32 | RD2/PSP2 — Digital I/O port D bit 2 / Parallel Slave Port bit 2 |
| 引脚 33 | RD3/PSP3 — Digital I/O port D bit 3 / Parallel Slave Port bit 3 |
| 引脚 34 | RD4/PSP4 — Digital I/O port D bit 4 / Parallel Slave Port bit 4 |
| 引脚 35 | RD5/PSP5 — Digital I/O port D bit 5 / Parallel Slave Port bit 5 |
| 引脚 36 | RD6/PSP6 — Digital I/O port D bit 6 / Parallel Slave Port bit 6 |
| 引脚 37 | RD7/PSP7 — Digital I/O port D bit 7 / Parallel Slave Port bit 7 |
| 引脚 38 | RE0/RD — Digital I/O port E bit 0 / Parallel Slave Port read control |
| 引脚 39 | RE1/WR — Digital I/O port E bit 1 / Parallel Slave Port write control |
| 引脚 40 | RE2/CS — Digital I/O port E bit 2 / Parallel Slave Port chip select |
| 引脚 41 | VSS — Ground reference |
| 引脚 42 | VDD — Positive supply voltage (3.0-5.5 V) |
| 引脚 43 | RF0 — Digital I/O port F bit 0 |
| 引脚 44 | RF1 — Digital I/O port F bit 1 |
| 引脚 45 | RF2 — Digital I/O port F bit 2 |
| 引脚 46 | RF3 — Digital I/O port F bit 3 |
| 引脚 47 | RF4 — Digital I/O port F bit 4 |
| 引脚 48 | RF5 — Digital I/O port F bit 5 |
| 引脚 49 | RF6 — Digital I/O port F bit 6 |
| 引脚 50 | RF7 — Digital I/O port F bit 7 |
| 引脚 51 | RG0 — Digital I/O port G bit 0 |
| 引脚 52 | RG1 — Digital I/O port G bit 1 |
| 引脚 53 | RG2 — Digital I/O port G bit 2 |
| 引脚 54 | RG3 — Digital I/O port G bit 3 |
| 引脚 55 | RG4 — Digital I/O port G bit 4 |
| 引脚 56 | NC — Not connected (per datasheet) |
| 引脚 57 | NC — Not connected (per datasheet) |
| 引脚 58 | NC — Not connected (per datasheet) |
| 引脚 59 | NC — Not connected (per datasheet) |
| 引脚 60 | NC — Not connected (per datasheet) |
| 引脚 61 | NC — Not connected (per datasheet) |
| 引脚 62 | NC — Not connected (per datasheet) |
| 引脚 63 | MCLR/VPP — Master Clear reset (active low) / Programming voltage input |
| 引脚 64 | RA6 — Digital I/O port A bit 6 (alternate oscillator) |
| 引脚 65 | RA7 — Digital I/O port A bit 7 (alternate oscillator) |
| 引脚 66 | VSS — Ground reference |
| 引脚 67 | VDD — Positive supply voltage (3.0-5.5 V) |
| 引脚 68 | NC — Not connected (per datasheet) |
典型应用
PIC18LC658T-I/L 适用于 7 应用s: CAN-Based Industrial Sensor Networks, HVAC Control Modules, Automotive Body-Control Network Nodes, Building Automation Gateways, Embedded Industrial Instrumentation, Legacy Transportation and Utility Systems, Consumer Appliance with CAN Networking.
CAN-Based Industrial Sensor Networks
The PIC18LC658T-I/L is purpose-built for CAN 2.0B sensor nodes on industrial fieldbuses. Its hardware CAN controller handles 11-bit and 29-bit identifiers at bus speeds up to 1 Mbps, offloading message filtering from the CPU via acceptance filters, while 32 KB of OTP accommodates 24-26 KB compiled C code. With 40 MHz core speed and 52 I/O pins, the device can drive sensor analog front-ends, process values via its 10-bit ADC, and publish telemetry at 100-500 Hz frame rates typical of CANopen or DeviceNet networks.
推荐
HVAC Control Modules
For commercial HVAC control, the PIC18LC658T-I/L mixes analog sensing (8-channel 10-bit ADC for temperature, humidity, and pressure) with PWM actuator drive and CAN networking to a central building controller. The 32 KB of OTP supports control-loop code with multiple state machines per zone, while four timers (two 8-bit plus two 16-bit) provide time-proportioned outputs for triac-fired heater stages and variable-speed fan control. The industrial -40 to +85 °C range covers rooftop unit enclosures.
推荐
Automotive Body-Control Network Nodes
Although not AEC-Q100 qualified, the PIC18LC658T-I/L has historically powered non-safety automotive body nodes such as door modules, seat controllers, mirror actuators, and lighting controllers. Its CAN 2.0B interface talks to the vehicle's body CAN bus at 125-500 kbps while the 52 I/O drive relays, PWM motor control, and LED strings. The 32 KB OTP sized approximately 24-26 KB compiled C, sufficient for state machines, fault logging, and diagnostics required by J1939 or GMLAN protocols.
推荐
Building Automation Gateways
The PIC18LC658T-I/L serves as a low-cost gateway between legacy RS-485 / Modbus field wiring and modern CAN-bus based BMS segments. Using its UART/SPI/I2C peripherals to talk to Modbus RTU slaves plus hardware CAN to the central controller, a 32 KB OTP can hold bridging logic and protocol translation tables. The 52 I/O provide flexibility for local override switches, status LEDs, and analog sensor aggregation at the gateway edge.
推荐
Embedded Industrial Instrumentation
Engineers deploy the PIC18LC658T-I/L in test-stands, process instrumentation, and laboratory data-acquisition where an integrated CAN interface eliminates the board space of an external controller. The 8-channel 10-bit ADC, two capture/compare modules, and 4 timers handle signal conditioning and timing measurements; the 32 KB OTP holds lookup tables for sensor linearization. Industrial temperature grade supports factory-floor chassis deployments without additional thermal validation.
推荐
Legacy Transportation and Utility Systems
Many rail signaling, agricultural equipment, and utility telemetry systems already include Microchip PIC18C658 nodes for CAN communication; the PIC18LC658T-I/L serves as a factory-original replacement when field units need board repair and the original part is no longer available. The same 68-PLCC footprint and PIC18C658 register set ensure drop-in replacement of legacy nodes without firmware changes, preserving the customer-installed base while operators migrate to the PIC18F6585 on new units.
推荐
Consumer Appliance with CAN Networking
Premium smart appliances increasingly use CAN to interconnect main controller, user-interface board, motor-drive board, and sensor modules. The PIC18LC658T-I/L fits low-cost appliance nodes (e.g., washing machine subcontroller) where its 32 KB OTP covers state-machine code, 10-bit ADC reads sensor inputs, and CAN 2.0B exchanges status with the main board. Its industrial temperature range exceeds typical residential appliance requirements by ample margin.
推荐
推荐产品汇总
工程参考数据： PIC18LC658T-I/L ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC18F6585-I/L | PIC18C658T-I/L | PIC18F6680-I/L |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 68-PLCC | 68-PLCC | 68-PLCC | 68-PLCC |
| Program Memory Type | OTP | Flash | OTP | Flash |
| Program Memory Size | 32 KB | 32 KB (Flash) | 32 KB (OTP) | 16 KB |
| Maximum Clock Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Voltage (LC vs F suffix) | 2.5 V to 5.5 V (LC) | 4.2 V to 5.5 V (F) | 4.2 V to 5.5 V (standard C) | 2.0 V to 5.5 V (F) |
| CAN Module | CAN 2.0B | CAN 2.0B | CAN 2.0B | CAN 2.0B + enhanced filters |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C (I grade) | -40 °C to +85 °C | -40 °C to +85 °C |
| Number of I/O Pins | 52 | 52 | 52 | 52 |
关键差异点
- Integrated hardware CAN 2.0B controller eliminates external CAN chip （对比 PIC18F258 (non-CAN PIC18 sibling))
- Low-voltage 2.5-5.5 V operating range supports battery-backed designs （对比 PIC18C658 (4.2-5.5 V 'C' variant))
- 32 KB OTP memory sizes for production CAN-only firmware （对比 PIC18C858 (larger 64 KB OTP version))
- Industrial -40 to +85 °C temperature grade spans factory and outdoor cabinet deployments （对比 PIC18C658 commercial (0 to +70 °C))
设计说明
PIC18LC658T-I/L is OTP-based - once programmed it cannot be re-flashed. Budget two or three engineering samples during development so firmware revision cycles do not consume final units. For products with field-revisionable firmware, choose PIC18F6585-I/L on the same 68-PLCC footprint. Verify jumper settings for ICSP (PGC/PGD on RB6/RB7) before final programming; a wrong MCLR pull-up prevents code download silently.
Estimated: at 40 MHz and 5 V supply, ICC active is approximately 15 mA, but with CAN module, ADC, and timers active in a typical sensor-node application this rises to 25 mA. The 'LC' (low-voltage) variant supports down to 2.5 V for battery-backed designs; if the supply rail drops below 4.2 V in the field, the LC part continues operating while the standard PIC18C658 simply resets. Add a 100 nF decoupling cap close to every VDD/VSS pair and a 10 µF bulk cap at the board input.
The 68-PLCC J-leaded package requires a JEDEC-standard PLCC-68 socket for prototype swap-out or a reflow profile compatible with J-leads (peak 235-245 °C, 60-90 sec above 220 °C). Keep-out clearance below the J-lead bend must be at least 0.5 mm so the lead bends are not over-strained during IR or forced-air reflow. For rugged environments consider a through-hole socket that absorbs mechanical stress from vibration or thermal cycling.
When using the on-chip CAN module, the CANTX/CANRX pins (RB2/RB3) require a sloped edge to meet CAN bus timing. Place a 120 Ω termination resistor at each end of the bus (and only at each end) per ISO 11898. With an MCP2551 transceiver, expect bus errors if total stub length exceeds 0.3 m at 1 Mbps; use a slower bit rate (125-500 kbps) for long cable assemblies or industrial fieldbus topologies.
Estimated: the device's 10-bit ADC can resolve approximately 5 mV at a 5 V reference, so analog and digital grounds should return through separate vias tied at the package's AVSS pin to avoid digital switching noise. Place the analog inputs on the opposite side of the board from switching regulators and clock-driver outputs. Connect AVSS to the same ground plane as VSS through a single 0 Ω resistor or bead for high-resolution sampling.
合规信息
Lifecycle status: obsolete as of 2026-09-28. RoHS and lead-free compliance should be verified per the lot-specific certificate of conformance; the part is industrial temperature grade only and is not AEC-Q100 qualified for automotive.
