PIC18LF4580T-I/PT - 8-bit PIC MCU, 32KB Flash, 40MHz, 44-TQFP
MPN: PIC18LF4580T-I/PT ✓ نشطPIC18LF4580T-I/PT نظرة عامة
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data memory, and configurable peripherals. The PIC18 family is Microchip's high-performance 8-bit architecture, positioned between the cost-optimized PIC16 family and the 16-bit dsPIC/PIC24 families. PIC18 MCUs typically include a hardware multiplier, prioritized interrupt controller, and a modified Harvard bus that lets the CPU read program memory as data through a table-read mechanism. They target embedded control applications that need deterministic response, low power, and a rich peripheral set without the cost of an ARM Cortex-M part.
Key features of the PIC18LF4580T-I/PT include 36 digital I/O pins, dual USART, MSSP (SPI/I2C), a parallel slave port, CTMU for capacitive touch or general current-source measurement, and nanoWatt Technology modes (Idle, Sleep, Low-Power Sleep, and Deep Sleep) that drop quiescent current below 1 uA in deep sleep. The 'LF' variant targets low-voltage 2.0V operation, whereas the standard PIC18F4580 requires 4.2V minimum VDD; both share the same instruction set, peripheral set, and pinout, simplifying migration.
The ECAN controller implements CAN 2.0B active with hardware acceptance filters, time-stamping, and multiple buffers, which is unusual at this price point and makes the part a strong fit for industrial networking. The 10-bit ADC supports up to 13 input channels with automatic acquisition and a 100 ks/s aggregate throughput, while CTMU enables capacitive-touch keypads, temperature measurement with a thermistor, or precision timing.
Typical applications include CAN-based industrial automation, automotive body and chassis ECUs, building automation nodes, HVAC controllers, and small embedded control boards where 32KB of Flash and ECAN communication outweigh the need for a 32-bit core. The TQFP-44 package suits hand-solderable prototypes and surface-mount production lines alike.
When designing with this part, configure the CONFIG words in MPLAB X IDE for the target oscillator and required peripherals, and always hold MCLR high through a 10 kohm pull-up. Decouple VDD/VSS with a 100 nF ceramic capacitor placed within 5 mm of each pin pair.
This page synthesizes distributor pricing, drop-in alternatives, and design notes not found on any single manufacturer or distributor page, giving engineers and buyers a single reference for the PIC18LF4580T-I/PT.
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الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC18LF4580T-I/PT (نفس عامل الشكل والبصمة) — يختلف في Package, Timers, Core Architecture, ADC, I/O Pins.
PIC18LF4580-I/PT
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عرض ورقة البيانات ←PIC18LF4480T-I/PT
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عرض ورقة البيانات ←PIC18LF4520T-I/PT
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PIC18LF4523T-I/PT
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عرض ورقة البيانات ←PIC18LF4525T-I/PT
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عرض ورقة البيانات ←PIC18LF4580T-I/PT الحدود القصوى والخصائص الكهربائية
| Core | PIC18 (8-bit RISC) |
| Program Memory (Flash) | 32 KB (16K x 16) |
| RAM | 1536 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| درجة حرارة التشغيل | -40 C to +85 C (industrial) |
| I/O Pins | 36 |
| ADC | 10-bit, up to 13 channels |
| CAN | ECAN 2.0B active |
| UART | 2x USART (Enhanced) |
| SPI / I2C | 1x MSSP (SPI / I2C master-slave) |
| Timers | Timer0/1/2/3 + WDT |
| العلبة | 44-pin TQFP (10x10 mm) |
| نوع التركيب | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
| مستوى MSL | 3 |
| حالة RoHS | Compliant |
تكوين أطراف PIC18LF4580T-I/PT
| دبوس 1 | MCLR — Master Clear (reset) input, active low |
| دبوس 2 | RA0/AN0 — Port A bit 0 / analog input 0 |
| دبوس 3 | RA1/AN1 — Port A bit 1 / analog input 1 |
| دبوس 4 | RA2/AN2/VREF- — Port A bit 2 / analog input 2 / ADC reference minus |
| دبوس 5 | RA3/AN3/VREF+ — Port A bit 3 / analog input 3 / ADC reference plus |
| دبوس 6 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| دبوس 7 | RA5/AN4 — Port A bit 5 / analog input 4 |
| دبوس 8 | RE0/RD — Port E bit 0 / parallel slave port read |
| دبوس 9 | RE1/WR — Port E bit 1 / parallel slave port write |
| دبوس 10 | RE2/CS — Port E bit 2 / parallel slave port chip select |
| دبوس 11 | VDD — Positive supply voltage |
| دبوس 12 | VSS — Ground reference |
| دبوس 13 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| دبوس 14 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| دبوس 15 | RC0/T1OSO — Port C bit 0 / Timer1 oscillator output |
| دبوس 16 | RC1/T1OSI — Port C bit 1 / Timer1 oscillator input |
| دبوس 17 | RC2/CCP1 — Port C bit 2 / Capture/Compare/PWM 1 |
| دبوس 18 | RC3 — Port C bit 3 / I2C SCL (MSSP) |
| دبوس 19 | RD0 — Port D bit 0 |
| دبوس 20 | RD1 — Port D bit 1 |
| دبوس 21 | RD2 — Port D bit 2 |
| دبوس 22 | RD3 — Port D bit 3 |
| دبوس 23 | RC4 — Port C bit 4 / I2C SDA (MSSP) |
| دبوس 24 | RC5 — Port C bit 5 / SPI SDO (MSSP) |
| دبوس 25 | RC6/TX — Port C bit 6 / USART TX |
| دبوس 26 | RC7/RX — Port C bit 7 / USART RX |
| دبوس 27 | RD4 — Port D bit 4 |
| دبوس 28 | RD5 — Port D bit 5 |
| دبوس 29 | RD6 — Port D bit 6 |
| دبوس 30 | RD7 — Port D bit 7 |
| دبوس 31 | VSS — Ground reference |
| دبوس 32 | VDD — Positive supply voltage |
| دبوس 33 | RB0/INT0 — Port B bit 0 / external interrupt 0 |
| دبوس 34 | RB1/INT1 — Port B bit 1 / external interrupt 1 |
| دبوس 35 | RB2/INT2 — Port B bit 2 / external interrupt 2 |
| دبوس 36 | RB3/CCP2 — Port B bit 3 / Capture/Compare/PWM 2 |
| دبوس 37 | RB4 — Port B bit 4 |
| دبوس 38 | RB5/PGM — Port B bit 5 / LVP programming |
| دبوس 39 | RB6/PGC — Port B bit 6 / ICSP clock |
| دبوس 40 | RB7/PGD — Port B bit 7 / ICSP data |
| دبوس 41 | AVSS — Analog ground |
| دبوس 42 | AVDD — Analog positive supply |
| دبوس 43 | C1OUT — Comparator 1 output (per datasheet) |
| دبوس 44 | C2OUT — Comparator 2 output (per datasheet) |
التطبيقات النموذجية
PIC18LF4580T-I/PT مناسب لـ 6 التطبيقs: CAN-based Industrial Automation Nodes, Automotive Body and Chassis ECUs, Building Automation and HVAC Controllers, Industrial Sensor Signal Conditioners, USB-to-CAN Gateway Bridges, Embedded Control with Capacitive Touch UI.
CAN-based Industrial Automation Nodes
The PIC18LF4580T-I/PT is ideal for CAN 2.0B industrial automation nodes because its integrated ECAN controller provides hardware acceptance filters, multiple transmit/receive buffers, and time-stamping without burdening the CPU with bit-banging. With 32 KB Flash and 1536 bytes RAM, the MCU fits complete CANopen or DeviceNet slave stacks for sensors, motor starters, and I/O modules. Its 2.0 V to 5.5 V supply range supports both 24 V industrial bus drops regulated to 3.3 V and legacy 5 V PLC backplanes. The 36 digital I/O pins and 10-bit ADC with 13 channels handle digital sensor reads, PWM control, and analog feedback in a single chip, reducing BOM cost and PCB area compared with discrete CAN solutions.
موصى به
Automotive Body and Chassis ECUs
In non-safety automotive body controllers such as door modules, lighting nodes, HVAC controls, and seat controllers, the PIC18LF4580T-I/PT provides the CAN connectivity, GPIO, and ADC performance needed at low cost. Its 40 MHz CPU delivers 10 MIPS, sufficient for CAN stack processing plus body control logic at 1 ms task rates. The industrial -40 C to +85 C temperature range covers cabin environments; for under-hood use, designers should select the automotive-grade PIC18 K-series instead. The 44-TQFP package is hand-solderable for prototype runs while also being compatible with high-volume SMT lines, making it a flexible choice for low-to-mid volume ECU programs.
موصى به
Building Automation and HVAC Controllers
Building automation controllers for VAV boxes, damper actuators, and BACnet/Modbus gateway nodes can leverage the PIC18LF4580T-I/PT's combination of ECAN, dual USART, and 10-bit ADC. The dual USART allows simultaneous Modbus RTU master communication on one port and a debug or sensor port on the other. The 32 KB Flash fits BACnet MS/TP or Modbus protocol stacks plus custom application logic; the 1536 bytes RAM is sufficient for typical frame buffers. nanoWatt Technology modes such as Deep Sleep reduce quiescent current below 1 uA, satisfying battery-backed wireless thermostat designs and energy-harvesting sensor nodes that spend most of their time idle.
موصى به
Industrial Sensor Signal Conditioners
Industrial 4-20 mA loop-powered transmitters and bridge sensor signal conditioners benefit from the PIC18LF4580T-I/PT's 10-bit ADC with 13 channels, sufficient for strain-gauge bridge readout, RTD linearization, or thermistor temperature sensing. The CTMU peripheral enables precision time measurement for ratiometric capacitive sensing, while the MSSP supports SPI or I2C communication with external ADCs or DACs. Industrial -40 C to +85 C operation and nanoWatt low-power modes support remote, battery-powered field instruments. The 32 KB Flash allows on-chip calibration tables and PID control loops, eliminating an external processor in many loop-powered designs.
موصى به
USB-to-CAN Gateway Bridges
USB-to-CAN bridge dongles for laptop-based CAN diagnostics and flashing can use the PIC18LF4580T-I/PT together with an external USB-UART bridge such as the MCP2200 or MCP2221. The PIC18 handles CAN 2.0B frame buffering and protocol translation, while the USB bridge enumerates as a virtual COM port on the host. The 32 KB Flash fits slcan or LAWICEL protocol firmware plus a small command interpreter. The 2.0 V minimum VDD allows operation from USB 5 V with a simple LDO; the 44-TQFP package accommodates hand-soldered prototypes and SMT production alike, ideal for low-volume diagnostic tool manufacturers.
موصى به
Embedded Control with Capacitive Touch UI
Appliance and consumer products with capacitive touch keypads, sliders, or proximity wake-up can use the PIC18LF4580T-I/PT's CTMU peripheral for ratiometric capacitive measurement without an external touch controller. The 10-bit ADC with 13 channels supports slider and wheel decoding, while 36 GPIO drive LEDs, relays, and buzzer outputs directly. The 32 KB Flash accommodates Microchip's free mTouch library plus custom UI logic. nanoWatt Deep Sleep keeps standby current below 1 uA, extending battery life in portable appliances and battery-backed thermostats. Industrial temperature range supports refrigerator, oven, and washing machine environments.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC18LF4580T-I/PT — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC18LF4580-I/PT | PIC18LF4480T-I/PT | PIC18LF4520T-I/PT | PIC18LF4523T-I/PT | PIC18LF4525T-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-pin TQFP (10x10 mm) | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash | 32 KB | 32 KB | 16 KB (-50%) | 32 KB | 32 KB | 48 KB (+50%) |
| RAM | 1536 B | 1536 B | 768 B (-50%) | 1536 B | 1536 B | 2560 B (+67%) |
| ECAN 2.0B | Yes | Yes | Yes | No | No | No |
| Operating Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Max CPU Speed | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS |
| ADC Channels | 13 x 10-bit | 13 x 10-bit | 13 x 10-bit | 13 x 10-bit | 12 x 10-bit | 13 x 10-bit |
أبرز الفروقات
- Integrated ECAN 2.0B controller with hardware acceptance filters (مقابلPIC18LF4520T-I/PT)
- 32 KB Flash vs 16 KB on lower-tier variants (مقابلPIC18LF4480T-I/PT)
- Industrial -40 C to +85 C operation down to 2.0 V (مقابلPIC18F4580-I/PT)
ملاحظات التصميم
The PIC18LF4580T-I/PT has separate analog (AVDD/AVSS) and digital (VDD/VSS) supply pairs. Decouple each pair with a 100 nF ceramic capacitor placed within 5 mm of the corresponding pins, and add a 10 uF bulk capacitor near the regulator output. According to the Microchip datasheet, AVDD must not exceed VDD by more than 0.3 V at any time, including during power-up; route the analog rail through a small ferrite bead for best ADC performance.
Route the high-speed ECAN signals (CANTX/CANRX) as a short differential pair matched to 60 ohm impedance, keep them at least 2 mm away from the oscillator traces, and place the MCP2551/MCP2562 transceiver close to the bus connector. The 40 MHz crystal traces must be short and guarded with a ground pour on both sides to avoid injecting noise into the CAN bus or ADC. Keep ICSP pins PGC/PGD accessible for in-circuit debugging.
The 'LF' suffix indicates low-voltage 2.0 V operation; do not program the CONFIG words with the standard F4580 .hex file because the LF variant has different BOR and LVD thresholds that can cause spurious resets. Always hold MCLR high through a 10 kohm pull-up; leaving MCLR floating causes erratic operation. When using ECAN, configure the CAN I/O pins (RC6/RC7) for digital mode by clearing the corresponding TRIS bits and configuring the PPS registers correctly.
معلومات الامتثال
RoHS and lead-free compliant per Microchip product page. Not AEC-Q100 qualified; select PIC18 K-series for automotive-grade applications.