PIC18LC601T-I/PT - 8-Bit ROM-less MCU, 25MHz, 64-TQFP | Microchip
MPN: PIC18LC601T-I/PT ✓ فعالPIC18LC601T-I/PT نمای کلی
Background: An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, typically a Harvard architecture that separates instruction fetch and data memory buses to maximize throughput. PIC18-series devices are Microchip's high-performance 8-bit line, featuring a RISC instruction set with single-cycle execution, hardware multiplier, and 16-bit wide instructions. The 'LC' sub-family denotes a low-voltage CMOS variant optimized for operation across 2.0 V to 5.5 V, targeting battery-powered and portable designs. ROM-less parts ship without internal program memory, instead fetching over an external memory interface - a common choice for prototyping, secure bootloaders, and systems whose firmware size exceeds the integrated Flash budget.
Key features include the external memory interface (EMI), a 10-bit ADC with up to 8 channels, multiple serial peripherals (USART, MSSP for SPI/I2C), capture/compare/PWM modules, and a low-power SLEEP instruction. The architecture supports up to 2 MB of linear program memory addressing. The 64-TQFP footprint exposes the full set of PIC18 peripheral pins including PORTA-G, plus dedicated external memory bus pins.
Typical applications are industrial control panels, motor drive sequencers, instrumentation front-ends, and embedded development platforms where external program memory is required for large firmware images, IP, or field-reprogrammability. It is also used in educational and evaluation boards where firmware is loaded from external EPROM during development.
Design consideration: Because this part is ROM-less, every board must include an external program memory device (e.g. 27C256 EPROM, SST39SF010 Flash) and ensure address/data bus timing matches the chosen memory access profile - careful PCB layout of the parallel bus is essential to avoid EMI and timing violations. Surface-mount TQFP-64 also demands standard 0.5 mm pitch land pattern with 4-layer PCB recommended for bus integrity.
جایگزین‌های drop-in برای PIC18LC601T-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 PIC18LC601T-I/PT (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Core Architecture, Operating Temperature, ADC, I/O Pins.
PIC18LC601-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18C601T-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18C601-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F8720-E/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F8620-E/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F8722T-E/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LC601T-I/PT حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | PIC18 (8-bit RISC, Harvard) |
| Family | PIC18C series |
| Program Memory Type | ROM-less (external memory bus) |
| Maximum CPU Frequency | 25 MHz |
| SRAM Size | 1536 bytes |
| Supply Voltage Range | 2.0 V to 5.5 V (LC low-voltage variant) |
| I/O Pins | 26 |
| ADC | 10-bit, up to 8 channels |
| Timers | 2x 8-bit, 3x 16-bit |
| PWM Channels | 2 |
| Input Capture Modules | 2 |
| Serial Interfaces | USART (1x), MSSP for SPI/I2C (1x) |
| External Memory Bus | Yes (16-bit data, up to 2 MB linear addressing) |
| بسته‌بندی | TQFP-64 (PT), 10x10 mm, 0.5 mm pitch |
| دمای کاری | -40C to +85C (Industrial) |
| نوع نصب | Surface Mount |
| سطح MSL | 3 (per JEDEC J-STD-020, reflow peak 250C) |
پیکربندی پین PIC18LC601T-I/PT
| پین 1 | OSC1/CLKI — Crystal oscillator input or external clock input |
| پین 2 | OSC2/CLKO — Crystal oscillator output or clock output |
| پین 3 | MCLR/VPP — Master clear (reset) input / programming voltage |
| 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 / VREF- |
| پین 7 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / 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 | RA6 — PORTA bit 6 |
| پین 11 | VSS — Ground reference |
| پین 12 | VDD — Positive supply voltage (2.0-5.5 V) |
| پین 13 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| پین 14 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| پین 15 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| پین 16 | RB3/CCP2A — PORTB bit 3 / CCP2 channel A |
| پین 17 | RB4 — PORTB bit 4 |
| پین 18 | RB5/PGM — PORTB bit 5 / LVP programming |
| پین 19 | RB6/PGC — PORTB bit 6 / ICSP clock |
| پین 20 | RB7/PGD — PORTB bit 7 / ICSP data |
| پین 21 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / T1 clock in |
| پین 22 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 |
| پین 23 | RC2/CCP1 — PORTC bit 2 / CCP1 |
| پین 24 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| پین 25 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پین 26 | RC5/SDO — PORTC bit 5 / SPI data out |
| پین 27 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| پین 28 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| پین 29 | VSS — Ground reference |
| پین 30 | VDD — Positive supply voltage (2.0-5.5 V) |
| پین 31 | RD0 — PORTD bit 0 |
| پین 32 | RD1 — PORTD bit 1 |
| پین 33 | RD2 — PORTD bit 2 |
| پین 34 | RD3 — PORTD bit 3 |
| پین 35 | RD4 — PORTD bit 4 |
| پین 36 | RD5 — PORTD bit 5 |
| پین 37 | RD6 — PORTD bit 6 |
| پین 38 | RD7 — PORTD bit 7 |
| پین 39 | RE0/AN5 — PORTE bit 0 / analog input 5 |
| پین 40 | RE1/AN6 — PORTE bit 1 / analog input 6 |
| پین 41 | RE2/AN7 — PORTE bit 2 / analog input 7 |
| پین 42 | RE3 — PORTE bit 3 |
| پین 43 | VSS — Ground reference |
| پین 44 | VDD — Positive supply voltage (2.0-5.5 V) |
| 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 | AVSS — Analog ground reference |
| پین 59 | AVDD — Analog positive supply voltage |
| پین 60 | NC — Not connected |
| پین 61 | NC — Not connected |
| پین 62 | NC — Not connected |
| پین 63 | NC — Not connected |
| پین 64 | NC — Not connected |
کاربردهای معمول
PIC18LC601T-I/PT مناسب است برای 6 کاربردs: Industrial Control Panels and PLC Sequencers, Motor Drive Sequencing Controllers, Instrumentation Front-End Controllers, Embedded Development and Prototyping Boards, Medical Device Front-Panels and Displays, Security and Access Control Panels.
Industrial Control Panels and PLC Sequencers
The PIC18LC601T-I/PT's 25 MHz CPU, 1536-byte SRAM, 26 I/O lines, and industrial temperature grade (-40C to +85C) make it well-suited for industrial control panels and PLC sequencers. The external memory bus supports large ladder-logic or state-machine firmware images that exceed on-chip Flash limits, while the 10-bit ADC reads analog sensor inputs. Placed on a backplane with opto-isolated inputs, the LC601 executes deterministic scan loops; engineers add an external EPROM/Flash and supervisor (e.g. MCP130) for robust industrial deployments. Compared to integrated-Flash PIC18F parts, the LC601's external memory bus allows field updates and IP separation.
پیشنهادی
Motor Drive Sequencing Controllers
The PIC18LC601T-I/PT fits motor drive applications where multi-axis sequencing, PWM generation, and encoder feedback must run on an 8-bit Harvard core with predictable interrupt latency. The 2 PWM channels and 2 input capture modules handle brushed or stepper motor control loops; the 25 MHz core runs PID loops at adequate update rates for small industrial drives. Pair the LC601 with external gate drivers and isolated current sensing. Designers add external Flash for parameter storage (drive profiles) and EEPROM emulation. The TQFP-64 footprint and industrial temperature grade support under-hood or cabinet-mounted operation.
پیشنهادی
Instrumentation Front-End Controllers
Test and measurement front-ends (digital multimeters, bench oscilloscopes, lab data loggers) leverage the PIC18LC601T-I/PT's deterministic 8-bit instruction flow, 25 MHz throughput, and external memory bus. The 10-bit ADC samples transducer signals while the USART streams data to a host PC; the external memory bus stores calibration tables and lookup arrays that exceed on-chip Flash. Industrial temperature grade suits bench equipment. Pair with precision op-amps (OPA227) for signal conditioning. Compared to higher-performance ARM Cortex-M parts, the LC601 offers predictable interrupt latency and a simpler toolchain (MPLAB-XC8) for legacy designs.
پیشنهادی
Embedded Development and Prototyping Boards
Educational and prototyping boards use the PIC18LC601T-I/PT as the host MCU because the external memory bus allows firmware to be loaded into swappable EPROM or Flash chips during development, letting students change program memory without re-programming the MCU itself. The 64-pin TQFP package exposes all PIC18 peripheral pins for breadboard-friendly breakout boards. Combined with MPLAB-X development tools and the legacy PIC18 instruction set, the LC601 is a teaching staple. Compared to modern PIC18F parts with integrated Flash, the LC601's separate program memory is pedagogically illustrative of Harvard architecture principles.
پیشنهادی
Medical Device Front-Panels and Displays
Medical device front-panels (infusion pump control boards, patient monitor keypads, diagnostic instrument displays) use the PIC18LC601T-I/PT for its long-life-cycle availability, industrial temperature grade, and deterministic real-time performance. The 10-bit ADC reads sensor inputs, the 2 PWM channels drive LED backlights or buzzer alerts, and the USART/SPI/I2C peripherals link to the main medical SoC. External memory stores UI strings and calibration data. The LC601's broad clinical market history and Microchip's product longevity program make it suitable for FDA-cleared designs where component change control is critical. Pair with isolation barriers for patient-connected circuits.
پیشنهادی
Security and Access Control Panels
Access control panels and intrusion alarm keypads deploy the PIC18LC601T-I/PT because the external memory bus can store large user databases and event logs in external Flash, while the 26 I/O lines scan keypads, drive relays, and read door sensors. The 25 MHz core runs the access decision firmware deterministically; the 10-bit ADC monitors battery and tamper circuits. The industrial temperature grade suits outdoor or uncontrolled-environment installations. Compared to modern Cortex-M0+ alternatives, the LC601's robust PIC18 ecosystem and long-term availability make it a reliable choice for security OEMs requiring 10+ year product lifecycles.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC18LC601T-I/PT — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC18LC601-I/PT | PIC18C601T-I/PT | PIC18C601-I/PT | PIC18F8720-E/PT | PIC18F8620-E/PT | PIC18F8722T-E/PT |
|---|---|---|---|---|---|---|---|
| Package | TQFP-64 (PT), 10x10 mm, 0.5 mm pitch | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | PIC18 8-bit RISC, ROM-less | PIC18 8-bit RISC, ROM-less | PIC18C 8-bit RISC, ROM-less | PIC18C 8-bit RISC, ROM-less | PIC18F 8-bit RISC, integrated Flash | PIC18F 8-bit RISC, integrated Flash | PIC18F 8-bit RISC, integrated Flash |
| Maximum CPU Frequency | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) |
| SRAM Size | 1536 bytes | 1536 bytes | 1536 bytes | 1536 bytes | 3840 bytes | 3840 bytes | 3904 bytes |
| Program Memory Type | External (ROM-less, external memory bus) | External (ROM-less) | External (ROM-less) | External (ROM-less) | Internal 128 KB Flash | Internal 64 KB Flash | Internal 128 KB Flash |
| Supply Voltage Range | 2.0 V to 5.5 V (LC low-voltage) | 2.0 V to 5.5 V (LC) | 4.2 V to 5.5 V (C original) | 4.2 V to 5.5 V (C original) | 2.0 V to 5.5 V (F) | 2.0 V to 5.5 V (F) | 2.0 V to 5.5 V (F) |
| I/O Pins | 26 | 26 | 26 | 26 | 68 (more peripheral-rich) | 68 | 68 |
تفاوت‌های کلیدی
- Low-voltage 2.0 V to 5.5 V operation (در مقابلPIC18C601T-I/PT)
- True ROM-less with external memory bus (در مقابلPIC18F8720-E/PT)
- Long product lifecycle with Microchip longevity program (در مقابلGeneric 8-bit ROM-less MCUs)
یادداشت‌های طراحی
Estimated layout: place the TQFP-64 PIC18LC601 and external program memory device (e.g. SST39SF010 Flash) within 50 mm of each other to keep the parallel address/data traces short. Route the address bus (PORTA, PORTH on extended variants) and data bus (PORTB-PORTG) as length-matched groups with controlled impedance (50 ohm target) on a 4-layer PCB with continuous ground plane. Avoid routing bus signals across split planes or near switching power converter edges.
Decouple each VDD/VSS pair on the LC601 with a 100 nF ceramic capacitor placed within 3 mm of the pins, plus a 10 uF bulk tantalum or ceramic near the package. Add a 10 uF bulk on AVDD/AVSS with a ferrite bead to isolate analog supply noise from digital switching. Estimated quiescent current of the LC601 is under 10 mA at 25 MHz, so a 100 mA LDO (MCP1700 family) is sufficient for this MCU alone but must be sized for external memory and peripherals.
Do not omit an external supervisor / reset IC such as the MCP130 family - the LC601's MCLR input is sensitive to brownouts below 2.0 V and may enter undefined states. Do not assume the 'LC' suffix automatically means 3.3 V - the LC601 operates from 2.0 V to 5.5 V with frequency derating below 4.2 V. When migrating PIC18C firmware to PIC18LC, verify that all timing-dependent code paths still meet setup/hold requirements at the chosen lower VDD. ROM-less means PC RAM does not include program storage - external memory interface must be configured at reset before code execution.
اطلاعات انطباق
RoHS/REACH status not explicitly stated in verified web data; Microchip PIC18 family is generally RoHS compliant and lead-free, but specific LC601 lot marking must be confirmed with distributor CoC. AEC-Q100 not applicable to legacy 8-bit MCU - choose automotive-grade PIC18F variants for AEC-Q100 requirements.
