PIC18LC658T-I/L - 8-Bit MCU 32KB OTP CAN PLCC-68 | Microchip
MPN: PIC18LC658T-I/L ✗ Cuối đờiPIC18LC658T-I/L Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC18LC658T-I/L — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18LC658T-I/L (cùng hình factor và footprint) — khác nhau ở CAN Module, Communication Interfaces, Operating Temperature, Program Memory Type, Timers.
PIC18F6585-I/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F6585T-I/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18C658T-I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18C658-I/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F6680-I/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LC658T-I/L Tỷ lệ tối đa & tính chất điện
| 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 |
| Hộp / Vỏ | 68-PLCC (24.23 x 24.23 mm) |
| Nhiệt độ hoạt động | -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 |
| Kiểu lắp đặt | Surface Mount |
| IC Type | High-performance MCU with CAN module |
Cấu hình chân PIC18LC658T-I/L
| Chân 1 | NC — Not connected (per datasheet) |
| Chân 2 | RB0/INT0 — Digital I/O port B bit 0 / External interrupt 0 |
| Chân 3 | RB1/INT1 — Digital I/O port B bit 1 / External interrupt 1 |
| Chân 4 | RB2/INT2/CANTX — Digital I/O port B bit 2 / External interrupt 2 / CAN TX |
| Chân 5 | RB3/CANRX — Digital I/O port B bit 3 / CAN RX |
| Chân 6 | RB4 — Digital I/O port B bit 4 (interrupt-on-change) |
| Chân 7 | RB5 — Digital I/O port B bit 5 (interrupt-on-change) |
| Chân 8 | RB6/PGC — Digital I/O port B bit 6 / ICSP clock (programming) |
| Chân 9 | RB7/PGD — Digital I/O port B bit 7 / ICSP data (programming) |
| Chân 10 | VSS — Ground reference |
| Chân 11 | VDD — Positive supply voltage (3.0-5.5 V for 'LC' variant) |
| Chân 12 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Chân 13 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Chân 14 | RA0/AN0 — Digital I/O port A bit 0 / Analog input channel 0 |
| Chân 15 | RA1/AN1 — Digital I/O port A bit 1 / Analog input channel 1 |
| Chân 16 | RA2/AN2 — Digital I/O port A bit 2 / Analog input channel 2 |
| Chân 17 | RA3/AN3 — Digital I/O port A bit 3 / Analog input channel 3 |
| Chân 18 | RA4/TOCKI — Digital I/O port A bit 4 / Timer0 clock input |
| Chân 19 | RA5/AN4 — Digital I/O port A bit 5 / Analog input channel 4 |
| Chân 20 | AVDD — Analog supply voltage (ADC reference) |
| Chân 21 | AVSS — Analog ground (ADC reference) |
| Chân 22 | RC0/T1OSO/T1CKI — Digital I/O port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 23 | RC1/T1OSI/CCP2 — Digital I/O port C bit 1 / Timer1 oscillator input / Capture-Compare-PWM 2 |
| Chân 24 | RC2/CCP1 — Digital I/O port C bit 2 / Capture-Compare-PWM 1 |
| Chân 25 | RC3/SCK/SCL — Digital I/O port C bit 3 / SPI clock / I2C clock |
| Chân 26 | RC4/SDI/SDA — Digital I/O port C bit 4 / SPI data in / I2C data |
| Chân 27 | RC5/SDO — Digital I/O port C bit 5 / SPI data out |
| Chân 28 | RC6/TX/CK — Digital I/O port C bit 6 / USART async TX / USART sync clock |
| Chân 29 | RC7/RX/DT — Digital I/O port C bit 7 / USART async RX / USART sync data |
| Chân 30 | RD0/PSP0 — Digital I/O port D bit 0 / Parallel Slave Port bit 0 |
| Chân 31 | RD1/PSP1 — Digital I/O port D bit 1 / Parallel Slave Port bit 1 |
| Chân 32 | RD2/PSP2 — Digital I/O port D bit 2 / Parallel Slave Port bit 2 |
| Chân 33 | RD3/PSP3 — Digital I/O port D bit 3 / Parallel Slave Port bit 3 |
| Chân 34 | RD4/PSP4 — Digital I/O port D bit 4 / Parallel Slave Port bit 4 |
| Chân 35 | RD5/PSP5 — Digital I/O port D bit 5 / Parallel Slave Port bit 5 |
| Chân 36 | RD6/PSP6 — Digital I/O port D bit 6 / Parallel Slave Port bit 6 |
| Chân 37 | RD7/PSP7 — Digital I/O port D bit 7 / Parallel Slave Port bit 7 |
| Chân 38 | RE0/RD — Digital I/O port E bit 0 / Parallel Slave Port read control |
| Chân 39 | RE1/WR — Digital I/O port E bit 1 / Parallel Slave Port write control |
| Chân 40 | RE2/CS — Digital I/O port E bit 2 / Parallel Slave Port chip select |
| Chân 41 | VSS — Ground reference |
| Chân 42 | VDD — Positive supply voltage (3.0-5.5 V) |
| Chân 43 | RF0 — Digital I/O port F bit 0 |
| Chân 44 | RF1 — Digital I/O port F bit 1 |
| Chân 45 | RF2 — Digital I/O port F bit 2 |
| Chân 46 | RF3 — Digital I/O port F bit 3 |
| Chân 47 | RF4 — Digital I/O port F bit 4 |
| Chân 48 | RF5 — Digital I/O port F bit 5 |
| Chân 49 | RF6 — Digital I/O port F bit 6 |
| Chân 50 | RF7 — Digital I/O port F bit 7 |
| Chân 51 | RG0 — Digital I/O port G bit 0 |
| Chân 52 | RG1 — Digital I/O port G bit 1 |
| Chân 53 | RG2 — Digital I/O port G bit 2 |
| Chân 54 | RG3 — Digital I/O port G bit 3 |
| Chân 55 | RG4 — Digital I/O port G bit 4 |
| Chân 56 | NC — Not connected (per datasheet) |
| Chân 57 | NC — Not connected (per datasheet) |
| Chân 58 | NC — Not connected (per datasheet) |
| Chân 59 | NC — Not connected (per datasheet) |
| Chân 60 | NC — Not connected (per datasheet) |
| Chân 61 | NC — Not connected (per datasheet) |
| Chân 62 | NC — Not connected (per datasheet) |
| Chân 63 | MCLR/VPP — Master Clear reset (active low) / Programming voltage input |
| Chân 64 | RA6 — Digital I/O port A bit 6 (alternate oscillator) |
| Chân 65 | RA7 — Digital I/O port A bit 7 (alternate oscillator) |
| Chân 66 | VSS — Ground reference |
| Chân 67 | VDD — Positive supply voltage (3.0-5.5 V) |
| Chân 68 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC18LC658T-I/L phù hợp cho 7 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LC658T-I/L — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Integrated hardware CAN 2.0B controller eliminates external CAN chip (vsPIC18F258 (non-CAN PIC18 sibling))
- Low-voltage 2.5-5.5 V operating range supports battery-backed designs (vsPIC18C658 (4.2-5.5 V 'C' variant))
- 32 KB OTP memory sizes for production CAN-only firmware (vsPIC18C858 (larger 64 KB OTP version))
- Industrial -40 to +85 °C temperature grade spans factory and outdoor cabinet deployments (vsPIC18C658 commercial (0 to +70 °C))
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
