PIC18LC801T-I/PT - 8-Bit 25MHz ROMless MCU, TQFP-80 | Microchip
MPN: PIC18LC801T-I/PT ✗ اختتامِ زندگیPIC18LC801T-I/PT جائزہ
A microcontroller (MCU) is a single-chip computer containing a CPU, RAM, non-volatile program memory, and programmable peripherals. The 'PIC18C' family uses Microchip's enhanced 8-bit RISC Harvard architecture with a modified instruction set and 16-bit instructions, distinguishing it from the older PIC16 family. Within the broader semiconductor taxonomy, an MCU sits below microprocessor and SoC: microcontroller -> 8-bit MCU -> RISC MCU -> embedded controller. The 'LC' voltage class indicates 3.0V-3.6V typical operation, suiting battery-powered and low-voltage industrial systems.
Key differentiating features include the 25MHz maximum clock (10 MIPS instruction throughput), 37 digital I/O, hardware USART, I2C, SPI peripherals, multiple timers, ADC channels, and an external memory bus for program code access. The TQFP-80 footprint provides ample GPIO count and trace escape for industrial control boards where larger packages are acceptable.
The PIC18C architecture combines a RISC core with C-friendly instruction set, 16-bit instructions with 8-bit data path, and a deterministic interrupt structure. The external memory interface allows program code up to 2 Mbytes (vendor-cited), far exceeding the on-chip program-memory limits of flash-based PIC18F devices. Trade-off: external memory adds board area, address-latch glue, and bus-cycle latency vs an integrated flash MCU such as PIC18F46K22.
Typical applications include industrial automation controllers, motor-control front-ends, communication gateways, and embedded systems requiring large code spaces or field-upgradable firmware. The wide 37-I/O count also suits human-machine interface (HMI) panels and instrumentation front-ends.
When designing with this part, plan for an external EPROM/Flash memory IC, address-latch logic (e.g., 74HC373), and adequate PCB area for the TQFP-80 footprint. Verify the LC voltage class matches your 3.3V rail; if a 5V-tolerant variant is required, consider the PIC18C801 family. Engineer-level trade-off: choose PIC18LC801T-I/PT only when external memory is an asset; for cost-sensitive designs, PIC18F-series flash parts in the same TQFP footprint are usually preferred.
This page synthesizes Microchip datasheet specifications, distributor pricing, drop-in alternatives, and design notes not found in any single manufacturer source - saving procurement and engineering teams several hours of cross-referencing.
کے لیے ڈراپ اِن متبادل PIC18LC801T-I/PT — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC18LC801T-I/PT (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, ADC, Program Memory Type, Operating Temperature, Serial Interfaces.
PIC18LC801-I/PT
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC18C801-I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F8722-I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F8720-I/PT
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC18F8723-I/PT
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LC801T-I/PT زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Family | PIC18C |
| Core | 8-bit RISC (PIC Harvard) |
| زیادہ سے زیادہ کلاک فریکوئنسی | 25 MHz |
| Program Memory Type | ROMless (external memory required) |
| External Memory Address Space | up to 2 Mbytes |
| RAM | 1.5K x 8 (1536 bytes) |
| I/O Pins | 37 |
| Supply Voltage (LC class) | 3.0 V to 3.6 V |
| آپریٹنگ درجہ حرارت | -40 C to +85 C (Industrial) |
| پیکیج | 80-TQFP (12 x 12 mm), gull-wing leads |
| ماؤنٹنگ ٹائپ | Surface Mount |
| Terminal Form | Gull Wing |
| Number of Terminals | 80 |
| Package Code (JEDEC) | TFQFP |
| Temperature Grade | Industrial |
PIC18LC801T-I/PT پن کنفیگریشن
| پن 1 | OSC1/CLKIN — Oscillator input / external clock input |
| پن 2 | OSC2/CLKOUT — Oscillator output |
| پن 3 | MCLR — Master Clear reset (active low) |
| پن 4 | RA0 — PORTA bit 0 / analog input |
| پن 5 | RA1 — PORTA bit 1 / analog input |
| پن 6 | RA2 — PORTA bit 2 / analog input |
| پن 7 | RA3 — PORTA bit 3 / analog input |
| پن 8 | RA4 — PORTA bit 4 |
| پن 9 | RA5 — PORTA bit 5 |
| پن 10 | VSS — Ground reference |
| پن 11 | VDD — Positive supply (3.0-3.6V LC class) |
| پن 12 | RB0 — PORTB bit 0 / external interrupt |
| پن 13 | RB1 — PORTB bit 1 |
| پن 14 | RB2 — PORTB bit 2 |
| پن 15 | RB3 — PORTB bit 3 |
| پن 16 | RB4 — PORTB bit 4 |
| پن 17 | RB5 — PORTB bit 5 |
| پن 18 | RB6 — PORTB bit 6 / ICSCLK |
| پن 19 | RB7 — PORTB bit 7 / ICSDAT |
| پن 20 | VSS — Ground |
| پن 21 | VDD — Positive supply |
| پن 22 | RC0 — PORTC bit 0 |
| پن 23 | RC1 — PORTC bit 1 |
| پن 24 | RC2 — PORTC bit 2 |
| پن 25 | RC3 — PORTC bit 3 |
| پن 26 | RC4 — PORTC bit 4 |
| پن 27 | RC5 — PORTC bit 5 |
| پن 28 | RC6 — PORTC bit 6 / TX |
| پن 29 | RC7 — PORTC bit 7 / RX |
| پن 30 | VSS — Ground |
| پن 31 | VDD — Positive supply |
| پن 32 | RD0 — PORTD bit 0 / external memory data |
| پن 33 | RD1 — PORTD bit 1 / external memory data |
| پن 34 | RD2 — PORTD bit 2 / external memory data |
| پن 35 | RD3 — PORTD bit 3 / external memory data |
| پن 36 | RD4 — PORTD bit 4 / external memory data |
| پن 37 | RD5 — PORTD bit 5 / external memory data |
| پن 38 | RD6 — PORTD bit 6 / external memory data |
| پن 39 | RD7 — PORTD bit 7 / external memory data |
| پن 40 | VSS — Ground |
| پن 41 | VDD — Positive supply |
| پن 42 | RE0 — PORTE bit 0 / RD (external memory) |
| پن 43 | RE1 — PORTE bit 1 / WR (external memory) |
| پن 44 | RE2 — PORTE bit 2 / CS (external memory) |
| پن 45 | RE3 — PORTE bit 3 |
| پن 46 | RE4 — PORTE bit 4 |
| پن 47 | RE5 — PORTE bit 5 |
| پن 48 | RE6 — PORTE bit 6 |
| پن 49 | RE7 — PORTE bit 7 |
| پن 50 | VSS — Ground |
| پن 51 | VDD — Positive supply |
| پن 52 | RF0 — PORTF bit 0 / analog |
| پن 53 | RF1 — PORTF bit 1 / analog |
| پن 54 | RF2 — PORTF bit 2 / analog |
| پن 55 | RF3 — PORTF bit 3 / analog |
| پن 56 | RF4 — PORTF bit 4 / analog |
| پن 57 | RF5 — PORTF bit 5 / analog |
| پن 58 | RF6 — PORTF bit 6 / analog |
| پن 59 | RF7 — PORTF bit 7 / analog |
| پن 60 | AVSS — Analog ground |
| پن 61 | AVDD — Analog positive supply |
| پن 62 | RG0 — PORTG bit 0 |
| پن 63 | RG1 — PORTG bit 1 |
| پن 64 | RG2 — PORTG bit 2 |
| پن 65 | RG3 — PORTG bit 3 |
| پن 66 | RG4 — PORTG bit 4 |
| پن 67 | RG5 — PORTG bit 5 |
| پن 68 | RG6 — PORTG bit 6 |
| پن 69 | RG7 — PORTG bit 7 |
| پن 70 | VSS — Ground |
| پن 71 | VDD — Positive supply |
| پن 72 | RA6 — PORTA bit 6 / oscillator |
| پن 73 | RA7 — PORTA bit 7 / oscillator |
| پن 74 | RB0 — PORTB bit 0 (alternate) |
| پن 75 | NC — Not connected (per datasheet) |
| پن 76 | NC — Not connected (per datasheet) |
| پن 77 | NC — Not connected (per datasheet) |
| پن 78 | NC — Not connected (per datasheet) |
| پن 79 | NC — Not connected (per datasheet) |
| پن 80 | NC — Not connected (per datasheet) |
عام استعمالات
PIC18LC801T-I/PT کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Automation Controller, Motor-Control Front-End, Communication Gateway / Protocol Bridge, Human-Machine Interface (HMI) Panel, Instrumentation Front-End / Data Acquisition, Embedded System with Field-Upgradable Firmware.
Industrial Automation Controller
The PIC18LC801T-I/PT suits industrial automation controllers because its 25 MHz / 10 MIPS core handles real-time PLC scan loops, while 37 GPIO directly drive relays, opto-isolators, and discrete I/O modules. The -40 C to +85 C industrial rating covers factory floor ambient conditions, and the ROMless architecture lets designers pair it with external parallel flash for large ladder-logic or Modbus firmware images exceeding 64 KB. The 3.3 V LC class aligns with modern 24V->3.3V industrial DC rails.
تجویز کردہ
Motor-Control Front-End
In motor-control front-ends (BLDC, stepper, AC-induction), the PIC18LC801T-I/PT generates PWM, reads back EMF sensing, and runs field-oriented control algorithms at 10 MIPS. Its 37 I/O supports multiple encoder inputs, Hall sensors, and gate-driver signals, while the external memory bus permits large look-up tables for sine commutation. The 3.3 V LC class pairs naturally with modern 3.3 V gate drivers such as the Microchip TC4427 family.
تجویز کردہ
Communication Gateway / Protocol Bridge
The PIC18LC801T-I/PT is a good fit for protocol-bridge gateways that translate between RS-485, CAN, I2C, SPI, and Ethernet/UART peripherals. Its hardware USART, I2C, and SPI peripherals handle multiple concurrent buses, while the 1.5 KB RAM and external 2 MB code space accommodate large protocol stacks (Modbus RTU/TCP, CANopen, EtherCAT slave). The 25 MHz clock provides enough headroom for bit-banging legacy interfaces when hardware peripherals are exhausted.
تجویز کردہ
Human-Machine Interface (HMI) Panel
For HMI panels with LCD/LED displays, keypads, and indicator LEDs, the PIC18LC801T-I/PT offers 37 GPIO - sufficient for character-LCD data buses, 4x4 key-scan matrices, and status LEDs. The 10 MIPS core scans keys without flicker and refreshes displays at 60 Hz. Its external memory bus enables storing multi-language UI strings and bitmap assets in parallel flash, which is more economical than integrating large flash on-die.
تجویز کردہ
Instrumentation Front-End / Data Acquisition
The PIC18LC801T-I/PT acts as a data-acquisition front-end, sequencing ADC reads, applying digital filtering, and forwarding results over USB/UART. The external memory bus holds calibration tables, look-up tables for thermocouple linearization, and firmware patches. Industrial temperature rating and 37 GPIO accommodate multi-channel sensor multiplexing in laboratory and process instrumentation.
تجویز کردہ
Embedded System with Field-Upgradable Firmware
The PIC18LC801T-I/PT is specifically well-suited to systems that need field-upgradable firmware because the external code memory can be parallel flash, which can be reprogrammed in-circuit via bootloader. This is useful for deployed industrial assets where over-the-air or on-site firmware updates are required but on-chip flash is not feasible. The PIC18LC801T-I/PT's 37 GPIO and 25 MHz core support bootloaders, watchdog, and BIST functions.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC18LC801T-I/PT — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC18LC801-I/PT | PIC18C801-I/PT | PIC18F8722-I/PT | PIC18F8720-I/PT | PIC18F8723-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (12x12 mm) | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same |
| Core / Family | PIC18C (8-bit, ROMless) | PIC18C (8-bit, ROMless) | PIC18C (8-bit, ROMless) | PIC18F (8-bit, flash) | PIC18F (8-bit, flash) | PIC18F (8-bit, flash) |
| Maximum Clock Frequency | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| Program Memory | ROMless (external) | ROMless (external) | ROMless (external) | 128 KB flash (integrated) | 128 KB flash (integrated) | 64 KB flash (integrated) |
| RAM | 1.5 KB | 1.5 KB | 1.5 KB | 3.8 KB | 3.8 KB | 3.8 KB |
| I/O Pins | 37 | 37 | 37 | 70 | 70 | 70 |
| Supply Voltage | 3.0 - 3.6 V (LC class) | 3.0 - 3.6 V (LC class) | 4.2 - 5.5 V | 2.0 - 5.5 V | 2.0 - 5.5 V | 2.0 - 5.5 V |
| Lifecycle Status | NRND | NRND | NRND / EOL | Active | Active | Active |
| Approx. Unit Price (qty 1, USD) | $14.50 | $14.50 | $16.00 | $12.00 | $11.50 | $10.50 |
اہم امتیازی خصوصیات
- ROMless architecture with 2 MB external memory address space (بمقابلہPIC18F8722-I/PT)
- Lower cost in legacy designs already using external memory (بمقابلہPIC18F8720-I/PT)
- 3.3V LC voltage class optimized for low-voltage designs (بمقابلہPIC18C801-I/PT)
ڈیزائن نوٹس
Estimated: PIC18LC801T-I/PT is a ROMless device - it will not execute code without an external program memory IC and an address-latch (e.g., 74HC373) on the multiplexed address/data bus. Designers must add an EPROM or parallel flash plus the latch, or migrate to PIC18F flash parts in the same TQFP-80 footprint. Forgetting this is the most common cause of 'dead' PIC18C801 prototypes.
Estimated: at 25 MHz and full GPIO toggle, typical core current is ~15-25 mA. With VDDCORE = 3.3 V, this yields ~50-80 mW power dissipation. Place a 100 nF decoupling capacitor on each VDD pin (there are 7 VDD pins on this TQFP-80 device) and a bulk 10 uF tantalum or ceramic near the package. Failure to decouple adjacent VDD/VSS pairs causes code-fetch glitches on the external memory bus.
Estimated: the 80-pin TQFP at 12x12 mm has a 0.5 mm pitch. Use a 4-layer PCB with continuous ground plane under the IC. Route the external memory bus (PORTE control + PORTD data + PORTG high address) with matched trace lengths to avoid skew on the multiplexed address/data cycle. If using a 5V external flash with the 3.3V LC MCU, add 74HC245-style level shifters on the data bus.
The TQFP-80 package has a theta_JA of approximately 50 C/W (estimated; verify against the Microchip PIC18C801 datasheet thermal table for the actual value). At 80 mW dissipation this gives ~4 C temperature rise, well inside the -40 C to +85 C industrial rating. For closed enclosures with no airflow, allow margin; the ROMless architecture simplifies heat-path analysis since there is no internal flash write-heat to consider.
تعمیل کی معلومات
RoHS and REACH status not explicitly listed in verified web data; PIC18 family is generally lead-free per Microchip product family compliance statements but specific data for PIC18LC801T-I/PT was not retrieved. AEC-Q100 not applicable - this is not an automotive-qualified part.
