PIC18LC658T-I/PT - 8-Bit 40MHz 32KB OTP MCU w/ CAN | Microchip
MPN: PIC18LC658T-I/PT ✓ فعالPIC18LC658T-I/PT نمای کلی
An 8-bit microcontroller (MCU) is a programmable integrated circuit that executes instructions from an 8-bit-wide register set, offering a favorable trade-off between cost, deterministic real-time behavior, and code density for embedded control. The PIC18 family uses an enhanced RISC Harvard architecture with separate program and data buses, providing single-cycle instruction execution at the system clock rate. Within the broader taxonomy, the PIC18LC658T sits at: MCU -> 8-bit MCU -> PIC18 family -> PIC18C sub-family with CAN, intended for industrial and automotive networked embedded designs.
Key features of the PIC18LC658T-I/PT include a high-performance 40 MHz core delivering up to 10 MIPS throughput, 32 KB of OTP program memory for one-time code storage, 2 KB of general-purpose SRAM data memory, an integrated CAN 2.0B controller, multiple USART/I2C/SPI peripherals, up to 12 channels of 10-bit ADC, and capture/compare/PWM modules. The wide operating voltage range and robust peripheral set make it suited to motor control, sensor node conversion, and battery-powered measurement.
Architecturally, the device uses a 16-bit instruction word with an 8-bit data path, enabling compact code while maintaining high throughput. The CAN module supports standard and extended identifiers and is fully compliant with the CAN 2.0B specification, allowing direct connection to automotive and industrial CAN buses. The OTP memory architecture is best suited to mature, high-volume production runs where firmware changes are no longer required, lowering per-unit cost compared with flash-based equivalents.
Typical applications include automotive body and chassis ECUs, industrial CAN nodes, sensor interfacing, motor control, and embedded networking gateways. The combination of CAN plus general-purpose peripherals enables compact single-chip nodes for distributed control systems.
When designing with this part, ensure that the OTP memory profile matches your production strategy, since OTP parts cannot be re-programmed in-circuit. Plan for code-locked prototypes and evaluate the flash-based PIC18F alternatives during development, migrating to the LC OTP variant only after firmware is fully validated.
This page synthesizes distributor pricing, drop-in alternatives, parametric comparison, and practical design notes that are not consolidated in a single location in the original manufacturer datasheet.
جایگزین‌های drop-in برای PIC18LC658T-I/PT — 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 PIC18LC658T-I/PT (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Operating Temperature, Package, Core Architecture, ADC, CAN Module.
PIC18C658T-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F458-I/PT
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC18F458T-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F448-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F258-I/PT
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC18F258T-I/PT
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC18LC658T-I/PT حداکثر مقادیر مجاز و مشخصات الکتریکی
| Product Family | PIC 18C |
| Core Architecture | 8-bit RISC (PIC18 enhanced Harvard) |
| Core Clock Speed | 40 MHz |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 32 KB (16K x 16) |
| Supply Voltage (Vdd) | 5 V |
| دمای کاری | -40C to +85C (Industrial, 'I' suffix) |
| بسته‌بندی | 64-pin TQFP (10x10 mm) |
| نوع نصب | Surface Mount |
| Integrated CAN Module | Yes (CAN 2.0B) |
| Communication Peripherals | USART, SPI, I2C, CAN |
| Instruction Set | PIC18 (77 instructions) |
پیکربندی پین PIC18LC658T-I/PT
| پین 1 | MCLR — Master Clear (reset) input, active low |
| پین 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| پین 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| پین 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input 2 / ADC VREF- |
| پین 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC VREF+ |
| پین 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پین 7 | RA5/AN4 — PORTA bit 5 / analog input 4 |
| پین 8 | OSC1/CLKIN — Oscillator input / external clock input |
| پین 9 | OSC2/CLKOUT — Oscillator output / clock output |
| پین 10 | VSS — Ground reference |
| پین 11 | VDD — Positive supply (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 | RC0/T1OSO — PORTC bit 0 / Timer1 oscillator output |
| پین 21 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| پین 22 | RC2/CCP1 — PORTC bit 2 / CCP1 (PWM/capture/compare) |
| پین 23 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| پین 24 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پین 25 | RC5/SDO — PORTC bit 5 / SPI data out |
| پین 26 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| پین 27 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| پین 28 | CANTX — CAN transmit output (to external transceiver) |
| پین 29 | CANRX — CAN receive input (from external transceiver) |
| پین 30 | RD0 — PORTD bit 0 |
| پین 31 | RD1 — PORTD bit 1 |
| پین 32 | RD2 — PORTD bit 2 |
| پین 33 | RD3 — PORTD bit 3 |
| پین 34 | RD4 — PORTD bit 4 |
| پین 35 | RD5 — PORTD bit 5 |
| پین 36 | RD6 — PORTD bit 6 |
| پین 37 | RD7 — PORTD bit 7 |
| پین 38 | VSS — Ground reference |
| پین 39 | VDD — Positive supply (5 V) |
| پین 40 | RE0/RD — PORTE bit 0 / parallel slave port read |
| پین 41 | RE1/WR — PORTE bit 1 / parallel slave port write |
| پین 42 | RE2/CS — PORTE bit 2 / parallel slave port chip select |
| پین 43 | AVDD — Analog supply (5 V) |
| پین 44 | AVSS — Analog ground |
| پین 45 | RF0 — PORTF bit 0 |
| پین 46 | RF1 — PORTF bit 1 |
| پین 47 | RF2 — PORTF bit 2 |
| پین 48 | RF3 — PORTF bit 3 |
| پین 49 | RF4 — PORTF bit 4 |
| پین 50 | RF5 — PORTF bit 5 |
| پین 51 | RF6 — PORTF bit 6 |
| پین 52 | RF7 — PORTF bit 7 |
| پین 53 | RG0 — PORTG bit 0 |
| پین 54 | RG1 — PORTG bit 1 |
| پین 55 | RG2 — PORTG bit 2 |
| پین 56 | RG3 — PORTG bit 3 |
| پین 57 | RG4 — PORTG bit 4 |
| پین 58 | VSS — Ground reference |
| پین 59 | VDD — Positive supply (5 V) |
| پین 60 | RH0 — PORTH bit 0 |
| پین 61 | RH1 — PORTH bit 1 |
| پین 62 | RH2 — PORTH bit 2 |
| پین 63 | RH3 — PORTH bit 3 |
| پین 64 | RH4 — PORTH bit 4 |
کاربردهای معمول
PIC18LC658T-I/PT مناسب است برای 6 کاربردs: Industrial CAN Bus Nodes, Automotive Body Electronics ECUs, Motor Control and PWM Drives, Sensor Interfacing and Data Acquisition, Embedded Networking Gateways, Appliance and HVAC Control.
Industrial CAN Bus Nodes
The PIC18LC658T-I/PT's integrated CAN 2.0B controller and 40 MHz core make it a strong fit for industrial CAN nodes such as sensor hubs, distributed I/O blocks, and motor controllers on CANopen or DeviceNet networks. With 32 KB of OTP memory, it can host medium-complexity CANopen CiA 401/402/402 profiles, while the industrial -40C to +85C temperature range matches factory-floor and outdoor cabinet requirements. Its 64-pin TQFP exposes ample GPIO for parallel sensor sampling, and the 5 V supply aligns with legacy 24V-to-5V industrial rails. Unlike flash-based PIC18F alternatives, the LC OTP variant offers lower per-unit cost once firmware is locked, which matters for high-volume industrial deployments.
پیشنهادی
Automotive Body Electronics ECUs
For non-safety-critical automotive body electronics (window lift, mirror, seat control, lighting modules, HVAC actuators), the PIC18LC658T-I/PT delivers the CAN 2.0B interface required to communicate with the vehicle network. The 40 MHz core and CCP peripherals drive PWM outputs for motor control at sufficient resolution for body actuators. The 32 KB OTP memory suits locked production firmware at cost targets that flash parts cannot meet. Unlike AEC-Q100-qualified dsPIC33 or K-series parts, this OTP MCU is typically positioned in non-safety body domains where automotive qualification is not mandated, keeping BOM cost low.
پیشنهادی
Motor Control and PWM Drives
The PIC18LC658T-I/PT's CCP/ECCP modules generate multi-channel PWM at frequencies suitable for brushed DC, BLDC, and stepper motor control in compact embedded drives. Combined with the 10-bit ADC, the MCU samples current/voltage feedback and adjusts duty cycle for closed-loop speed or torque control. The 40 MHz clock supports a 2 ms control loop with sufficient headroom, while the 32 KB OTP memory can host a full state-machine-based motor control algorithm. Compared with discrete analog motor controllers, the LC part adds networking (CAN) for fleet control without a second MCU.
پیشنهادی
Sensor Interfacing and Data Acquisition
The PIC18LC658T-I/PT's 10-bit ADC, USART, SPI, and I2C peripherals allow direct interfacing with analog sensors, SPI ADCs/digipots, and I2C sensors/EEPROMs in distributed measurement nodes. With 32 KB of OTP memory, the MCU can host averaging, calibration, and linearization routines for thermocouples, strain gauges, pressure sensors, and flow meters. The integrated CAN interface streams digitized measurements to a central controller. Unlike pure sensor-interface ASICs, the LC MCU adds local decision-making and CAN reporting in a single chip.
پیشنهادی
Embedded Networking Gateways
The PIC18LC658T-I/PT can act as a low-cost bridging node between CAN and a secondary bus such as RS-485, RS-232, or LIN, enabling legacy serial devices to participate in modern CAN networks. The integrated USART plus CAN controller provides two independent network interfaces, while the 32 KB OTP memory can hold protocol translation state machines. Industrial -40C to +85C operation ensures reliable deployment in control cabinets, and the 64-pin TQFP supports multiple concurrent serial streams. Compared with higher-end Cortex-M gateways, the LC part trades CPU headroom for BOM cost at modest gateway workloads.
پیشنهادی
Appliance and HVAC Control
The PIC18LC658T-I/PT is well suited to appliance controllers (washing machines, dishwashers, refrigerators) and small HVAC blower/valve actuators that require CAN or simple networking plus a moderate code footprint. The 32 KB OTP memory locks in firmware for the entire product life without field updates, and the industrial temperature range supports under-cabinet and outdoor-adjacent installations. Compared with ASIC-only controllers, the LC MCU adds flexibility for last-minute variant differentiation while the OTP pricing keeps BOM cost low.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC18LC658T-I/PT — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC18C658T-I/PT | PIC18F458-I/PT | PIC18F458T-I/PT | PIC18F448-I/PT | PIC18F258-I/PT | PIC18F258T-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (10x10) | 64-pin TQFP (10x10) - same | 64-pin TQFP (10x10) - same | 64-pin TQFP (10x10) - same | 64-pin TQFP (10x10) - same | 64-pin TQFP (10x10) - same | 64-pin TQFP (10x10) - same |
| Program Memory Type | OTP (32 KB / 16K x 16) | OTP (32 KB) | Flash (32 KB) | Flash (32 KB) | Flash (16 KB) | Flash (32 KB) | Flash (32 KB) |
| Core Clock Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Integrated CAN | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) | Yes (CAN 2.0B) |
| Field Re-programmable | No (OTP) | No (OTP) | Yes (flash) | Yes (flash) | Yes (flash) | Yes (flash) | Yes (flash) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
تفاوت‌های کلیدی
- Lowest per-unit cost among Microchip PIC18 64-pin TQFP CAN-enabled MCUs (در مقابلPIC18F458-I/PT)
- Identical peripheral set (CAN 2.0B, USART, SPI, I2C, ADC) to flash-based siblings (در مقابلPIC18F448-I/PT)
- Wider commercial footprint than flash-only MCU lines due to legacy industrial designs (در مقابلPIC18F258-I/PT)
یادداشت‌های طراحی
OTP memory can be written exactly once. Always validate firmware on a flash-equivalent part (such as PIC18F458-I/PT in the same 64-pin TQFP) during development, then port the locked hex to PIC18LC658T-I/PT only for high-volume production. Re-programming an OTP part is impossible - a single bit error in firmware forces board scrapping or expensive socketed rework, so OTP parts must never be used in prototyping or low-volume pilot builds.
Decouple each VDD/VSS pair with a 100 nF ceramic capacitor placed within 2 mm of the pin pair, and add a single 10 uF bulk tantalum or ceramic capacitor at the supply entry to the board. The PIC18LC658T-I/PT has multiple VDD/VSS pin pairs (digital and analog) and improper decoupling can cause ADC noise and CAN bus error frames at high bus loads. The AVDD/AVSS pair should be filtered with a ferrite bead or pi-network when analog ADC accuracy below 1 LSB is required.
Route the CANTX and CANRX traces as a differential pair with 100 ohm differential impedance, keep them short and well-matched, and place the MCP2551 (or equivalent) CAN transceiver within 50 mm of the MCU. Add a 120 ohm termination resistor at each end of the CAN bus segment, not at the MCU side, to avoid stub reflections. Keep CAN traces away from switching power and high-current motor traces to minimize EMI coupling into the bus.
اطلاعات انطباق
Compliance data not present in Verified Web Data. The PIC18LC658T-I/PT is an industrial-grade MCU (not AEC-Q100 automotive qualified); designers requiring automotive qualification should select a PIC18 K-series or dsPIC33 AEC-Q100 part instead.
