PIC18LC658-I/L - 8-bit MCU 32KB OTP 52 I/O CAN | Microchip
MPN: PIC18LC658-I/L ✗ پایان تولیدPIC18LC658-I/L نمای کلی
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory (ROM/Flash/OTP), working memory (RAM), and integrated peripherals such as timers, communication controllers, and analog blocks. Within the broader semiconductor taxonomy, an MCU belongs to: microcontroller -> embedded controller -> integrated circuit -> semiconductor. The PIC18 family uses a modified Harvard architecture with separate program and data buses and an advanced C-optimized RISC instruction set, which is why the part is described as a "C-compiler optimized architecture" in the datasheet.
Key features of the PIC18LC658-I/L include: linear program memory addressing up to 32 KB, linear data memory addressing up to 4 KB, on-chip CAN module for automotive and industrial networking, 52 I/O pins with high-current sink/source capability, wide 2.3 V to 5.5 V operating range (the "LC" low-voltage variant), and 40 MHz maximum clock speed. The device family supports in-circuit serial programming (ICSP) and is suitable for both prototype and production environments.
The PIC18LC658 uses a Harvard architecture with a 16-bit instruction word and an 8-bit data path, plus an 8x8 hardware multiplier. It includes power-managed modes (Run, Idle, Sleep), brown-out reset, watchdog timer with its own on-chip RC oscillator, and a programmable code protection scheme. The CAN module is compliant with CAN 2.0B active specification, supporting both standard (11-bit) and extended (29-bit) identifiers and bit rates up to 1 Mbps.
Typical applications include automotive body and chassis ECUs, industrial CAN nodes, building automation gateways, HVAC controllers, and sensor aggregators that need deterministic real-time CAN communication. The wide 52 I/O count plus on-chip CAN makes it a strong fit for distributed control nodes.
When designing with this MCU, verify whether the "LC" low-voltage variant matches your application's supply rail: the LC suffix denotes 2.3 V to 5.5 V operation, while the non-LC PIC18C658 family runs from a wider range. Also confirm whether OTP (one-time programmable) memory fits your firmware update strategy, or whether a Flash-based PIC18F alternative would be more appropriate for in-field updates.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives within the PIC18 family, and practical design considerations that supplement the manufacturer datasheet without duplicating it.
جایگزین‌های drop-in برای PIC18LC658-I/L — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC18LC658-I/L (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Mounting Type, ADC, Core Architecture, Number of I/O Pins, Operating Temperature Range.
PIC18C658-I/L
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC18F458-I/L
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F6585-I/L
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC18LC658-I/L حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | PIC18 (8-bit, modified Harvard, RISC) |
| Program Memory Size | 32 KB (16K x 16) OTP |
| RAM Size | 1.5 KB (1.5K x 8) |
| Maximum CPU Frequency | 40 MHz |
| Operating Voltage (Vdd) | 2.3 V to 5.5 V (LC low-voltage variant) |
| Number of I/O Pins | 52 |
| Communication Interfaces | CAN 2.0B, USART, I2C (SSP), SPI (SSP) |
| بسته‌بندی | 68-LCC (PLCC, J-Lead) |
| Oscillator Type | External |
| محدوده دمای کاری | -40 C to +85 C (Industrial, "I" suffix) |
| نوع نصب | Surface Mount |
| Packaging | Tube |
پیکربندی پین PIC18LC658-I/L
| پین 1 | OSC1/CLKIN — Oscillator crystal input or external clock input |
| پین 2 | OSC2/CLKOUT — Oscillator crystal output or clock output |
| پین 3 | MCLR/Vpp — Master Clear (reset) input / programming voltage input |
| پین 4 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| پین 5 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| پین 6 | RA2/AN2/Vref- — PORTA bit 2 / analog input 2 / ADC Vref- |
| پین 7 | RA3/AN3/Vref+ — PORTA bit 3 / analog input 3 / ADC Vref+ |
| پین 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پین 9 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| پین 10 | Vss — Ground reference |
| پین 11 | Vdd — Positive supply voltage (2.3 V to 5.5 V) |
| پین 12 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| پین 13 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| پین 14 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| پین 15 | RB3/INT3 — PORTB bit 3 / external interrupt 3 |
| پین 16 | RB4 — PORTB bit 4 |
| پین 17 | RB5 — PORTB bit 5 |
| پین 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| پین 19 | RB7/PGD — PORTB bit 7 / ICSP data |
| پین 20 | Vss — Ground reference |
| پین 21 | Vdd — Positive supply voltage |
| پین 22 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| پین 23 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 I/O |
| پین 24 | RC2/CCP1 — PORTC bit 2 / CCP1 I/O |
| پین 25 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| پین 26 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پین 27 | RC5/SDO — PORTC bit 5 / SPI data out |
| پین 28 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| پین 29 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| پین 30 | Vss — Ground reference |
| پین 31 | CANTX — CAN bus transmit output (to external transceiver) |
| پین 32 | CANRX — CAN bus receive input (from external transceiver) |
| پین 33 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| پین 34 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| پین 35 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| پین 36 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| پین 37 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| پین 38 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| پین 39 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| پین 40 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| پین 41 | Vss — Ground reference |
| پین 42 | Vdd — Positive supply voltage |
| پین 43 | RE0/RD — PORTE bit 0 / parallel slave port read control |
| پین 44 | RE1/WR — PORTE bit 1 / parallel slave port write control |
| پین 45 | RE2/CS — PORTE bit 2 / parallel slave port chip select |
| پین 46 | AVdd — Analog positive supply (must equal Vdd for ADC) |
| پین 47 | AVss — Analog ground reference (must equal Vss for ADC) |
| پین 48 | RF0 — PORTF bit 0 [DATA_NEEDED: alternate function per datasheet] |
| پین 49 | RF1 — PORTF bit 1 [DATA_NEEDED: alternate function per datasheet] |
| پین 50 | RF2 — PORTF bit 2 [DATA_NEEDED: alternate function per datasheet] |
| پین 51 | RF3 — PORTF bit 3 [DATA_NEEDED: alternate function per datasheet] |
| پین 52 | RF4 — PORTF bit 4 [DATA_NEEDED: alternate function per datasheet] |
| پین 53 | RF5 — PORTF bit 5 [DATA_NEEDED: alternate function per datasheet] |
| پین 54 | RF6 — PORTF bit 6 [DATA_NEEDED: alternate function per datasheet] |
| پین 55 | RF7 — PORTF bit 7 [DATA_NEEDED: alternate function per datasheet] |
| پین 56 | RG0 — PORTG bit 0 [DATA_NEEDED: alternate function per datasheet] |
| پین 57 | RG1 — PORTG bit 1 [DATA_NEEDED: alternate function per datasheet] |
| پین 58 | RG2 — PORTG bit 2 [DATA_NEEDED: alternate function per datasheet] |
| پین 59 | RG3 — PORTG bit 3 [DATA_NEEDED: alternate function per datasheet] |
| پین 60 | RG4 — PORTG bit 4 [DATA_NEEDED: alternate function per datasheet] |
| پین 61 | Vss — Ground reference |
| پین 62 | Vdd — Positive supply voltage |
| پین 63 | NC — Not connected (per datasheet) |
| پین 64 | NC — Not connected (per datasheet) |
| پین 65 | NC — Not connected (per datasheet) |
| پین 66 | NC — Not connected (per datasheet) |
| پین 67 | NC — Not connected (per datasheet) |
| پین 68 | NC — Not connected (per datasheet) |
کاربردهای معمول
PIC18LC658-I/L مناسب است برای 6 کاربردs: Automotive CAN Body Control ECUs, Industrial CANopen / DeviceNet Nodes, Building Automation HVAC Controllers, Sensor Aggregator / Gateway, Medical Monitoring Peripherals, Portable Battery-Powered CAN Nodes.
Automotive CAN Body Control ECUs
The PIC18LC658-I/L is well suited for automotive body and chassis ECUs because its on-chip CAN 2.0B active controller supports standard 11-bit and extended 29-bit identifiers at bit rates up to 1 Mbps. With 52 high-current digital I/O pins, the device can directly drive LEDs, relays, and small solenoids used in body modules without external buffers, reducing BOM cost. The 40 MHz clock and 32 KB OTP program memory comfortably hold typical body-control state machines, while the 1.5 KB RAM supports multiple message buffers for CAN and periodic task queues. Place a TVS-protected CAN transceiver such as MCP2551 adjacent to the MCU on the PCB and provide proper bus termination (typically 120 ohm at each bus end) to meet automotive EMC requirements.
پیشنهادی
Industrial CANopen / DeviceNet Nodes
For industrial CANopen and DeviceNet slaves, the PIC18LC658-I/L provides a deterministic 8-bit core with hardware CAN, eliminating the need for a discrete CAN controller and reducing board space. The wide 2.3 V to 5.5 V Vdd range allows direct interface to 3.3 V or 5 V sensor rails without additional level shifters. With 32 KB OTP program memory, the device can hold a minimal CANopen stack plus application logic for sensors, valves, or motor starters in a DeviceNet node. Use the CAN interrupt to wake from Sleep on bus activity, and pair the MCU with an isolated DC-DC and isolated CAN transceiver for industrial noise immunity.
پیشنهادی
Building Automation HVAC Controllers
In HVAC controllers for building automation, the PIC18LC658-I/L's 52 I/O pins map cleanly to multiple relay outputs, thermistor inputs, and triac control signals typical of a rooftop unit controller. The integrated 10-bit ADC reads analog temperature and pressure sensors directly, while USART and SPI interfaces connect to a wall-mounted display or external modem. The on-chip CAN module lets multiple rooftop units share a building-wide management bus, reducing wiring complexity. Use brown-out reset and watchdog timer for unattended 24/7 operation, and leverage the wide 2.3 V to 5.5 V range to support both 3.3 V and 5 V sensor tacks in retrofit installations.
پیشنهادی
Sensor Aggregator / Gateway
The PIC18LC658-I/L acts as a low-cost sensor aggregator by polling multiple SPI or I2C sensors and forwarding their data onto a CAN bus. The 40 MHz core comfortably handles sensor acquisition rates into the kHz range while still servicing a 500 kbps CAN bus without missed frames. The 1.5 KB RAM serves as a circular buffer for sensor-to-CAN message staging, and 52 I/O pins allow direct connection to numerous discrete sensors and actuators alongside the serial sensor network. For battery-powered remote sensor nodes, take advantage of Sleep mode with CAN wake-up to reduce idle current consumption by orders of magnitude.
پیشنهادی
Medical Monitoring Peripherals
In medical monitoring peripherals such as infusion pump controllers, bedside alarm panels, and patient station gateways, the PIC18LC658-I/L offers deterministic real-time response for safety-critical message handling on a CAN-based medical device bus (such as the CAN-based networking used in some patient monitoring systems). The wide 2.3 V to 5.5 V supply range simplifies integration into 3.3 V battery-powered portable carts and 5 V fixed installations. The 52 I/O lines accommodate displays, keypads, alarms, and discrete sensors without external I/O expanders. Note that medical applications require ISO 10995-1 / IEC 60601-1 system-level certification; the MCU alone does not provide regulatory compliance and must be qualified as part of the finished device.
پیشنهادی
Portable Battery-Powered CAN Nodes
Battery-powered handheld diagnostic tools and portable CAN sniffers benefit from the PIC18LC658-I/L's low-end 2.3 V Vdd operation, which extends operating life on a 2xAA / 2xAAA alkaline or Li-Po cell pack. The integrated CAN peripheral removes the cost, board space, and quiescent current of an external CAN controller, while the wide 52 I/O count allows direct connection to user buttons, an LCD, and a serial port without additional logic. Sleep current on the order of microamps (per datasheet) plus CAN wake-up on bus activity enables multi-month battery life for intermittently-accessed nodes.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC18LC658-I/L — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC18C658-I/L | PIC18F458-I/L | PIC18F6585-I/L |
|---|---|---|---|---|
| Package | 68-PLCC (J-Lead) | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Program Memory | 32 KB OTP | 32 KB OTP | 32 KB Flash | 48 KB Flash |
| Operating Voltage | 2.3 V to 5.5 V | 2.5 V to 5.5 V | 4.2 V to 5.5 V | 2.0 V to 5.5 V |
| RAM | 1.5 KB | 1.5 KB | 1.5 KB | 3.3 KB |
| On-chip CAN | Yes (CAN 2.0B active) | Yes (CAN 2.0B active) | Yes (CAN 2.0B active) | Yes (CAN 2.0B active) |
| Memory Type | OTP (one-time programmable) | OTP | Flash | Flash |
| Max CPU Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| I/O Pins | 52 | 52 | 52 | 52 |
| Lifecycle | NRNR | NRNR | Active | Active |
تفاوت‌های کلیدی
- Low-voltage 2.3 V Vdd operation within the PIC18 OTP family (در مقابلPIC18C658-I/L)
- Pin-compatible upgrade path to Flash-based PIC18F458-I/L (در مقابلPIC18F458-I/L)
- Integrated CAN 2.0B active controller on chip (در مقابلPIC18F458-I/L)
یادداشت‌های طراحی
Decouple Vdd/Vss pairs with a 100 nF ceramic capacitor placed within 5 mm of each Vdd pin (the device has multiple Vdd pins on the 68-PLCC, pins 11, 21, 42, 62). Add a bulk 10 uF tantalum or aluminum polymer capacitor at the board entry point. Tie AVdd to Vdd and AVss to Vss at a single point near the MCU with an LC filter (10 ohm + 100 nF) if analog channels are used, to keep digital switching noise out of the ADC reference.
The PIC18LC658 uses one-time-programmable (OTP) memory. Once programmed, you cannot erase the firmware. Ensure you use a 68-pin PLCC test socket or skip-stock of a few pre-programmed MCUs during board bring-up, since every firmware revision requires a fresh blank MCU. For prototypes that will iterate firmware frequently, choose a Flash-based PIC18F458-I/L or PIC18F6585-I/L in the same 68-PLCC footprint instead.
Route the CANH and CANL signals as a differential pair with 120 ohm characteristic impedance, keeping them symmetric and at least 10 mm away from noisy traces such as clock lines and DC-DC switch nodes. Place the MCP2551 CAN transceiver within 25 mm of the CANTX/CANRX pins (PLCC pins 31 and 32) and provide a split termination (60 ohm + 60 ohm + 4.7 nF to ground) at the bus node to improve EMC.
Estimated: at 40 MHz clock and 5.5 V supply, the PIC18LC658-I/L typically consumes around 30 mA active. With 68-PLCC thermal resistance theta_JA of approximately 50 C/W, junction-to-ambient temperature rise is roughly 8 C above ambient at 5.5 V active. In Sleep mode, quiescent current drops to a few microamps, so battery-powered nodes can leverage Sleep + CAN wake-up for sub-mW average power.
اطلاعات انطباق
RoHS and lead-free status not explicitly confirmed in verified sources for PIC18LC658-I/L. The 68-PLCC package and OTP memory family pre-date RoHS in many cases; request a lot-specific CoC from Microchip if RoHS compliance is required for your product. Not AEC-Q100 qualified; for automotive ECU designs requiring AEC-Q100, consider AEC-Q100-qualified PIC18 alternates.
