PIC18LF26K80T-I/SO - 64KB Flash 8-bit MCU, ECAN, XLP | Microchip
MPN: PIC18LF26K80T-I/SO ✓ Hoạt độngPIC18LF26K80T-I/SO Tóm tắt
An 8-bit microcontroller (MCU) is a programmable integrated circuit that processes data in 8-bit wide chunks using a Harvard or von Neumann architecture. MCUs in the PIC18 family, including the K80 sub-family, are categorized as 8-bit (8-bit CPU) -> enhanced flash microcontroller -> microcontroller (MCU) -> semiconductor. The LF prefix designates low-voltage (1.8V-3.6V) variants for battery-powered designs, while the K80 sub-family adds ECAN and nanoWatt XLP technology.
Key features include 64KB flash program memory, 4KB RAM, 1KB EEPROM, internal oscillator up to 64MHz, 12-bit ADC, 8-bit DAC, hardware ECAN, and nanoWatt XLP sleep currents below 20nA. The CTMU (Charge Time Measurement Unit) enables capacitive touch sensing without external components. The device includes an integrated 16-bit timer, capture/compare/PWM modules, and a 12-bit ADC supporting up to 300 ksps.
The K80 architecture uses a 16-bit instruction word optimized for C compiler efficiency, with hardware multiply and divide. The ECAN peripheral implements CAN 2.0B with 6 hardware mailboxes and 3 prioritized message buffers, simplifying automotive and industrial CAN node design. The nanoWatt XLP technology achieves deep-sleep currents under 20nA with RAM retention, making it suitable for battery-powered sensor nodes.
Typical applications include industrial CAN nodes, automotive body controllers, building automation, capacitive touch interfaces, low-power sensor transmitters, and elevator control panels. Designers should ensure proper decoupling (100nF + 10uF bulk) near VDD/AVDD pins and follow ECAN bus termination requirements of 120 ohms at each bus end.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF26K80T-I/SO — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18LF26K80T-I/SO (cùng hình factor và footprint) — khác nhau ở Package, ADC, Program Memory (Flash), Timers, Mounting Type.
PIC18LF26K80-I/SO
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PIC18F26K80-I/SO
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Xem tài liệu →PIC18F26K80T-I/SO
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PIC18LF46K80T-I/SO
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PIC18LF26K80T-I/SO Tỷ lệ tối đa & tính chất điện
| Program Memory Size | 64 KB (32K x 16) |
| RAM Size | 3.6 KB x 8 (4 KB) |
| EEPROM Size | 1 KB |
| CPU Core | PIC (8-bit enhanced Harvard) |
| Maximum CPU Frequency | 64 MHz |
| Performance | 16 MIPS |
| Operating Voltage Range | 1.8 V to 3.6 V |
| Number of I/O Pins | 24 |
| ADC Resolution | 12-bit, up to 11 channels |
| ECAN Module | CAN 2.0B with 6 mailboxes |
| CTMU | Yes (Capacitive Touch) |
| Oscillator Type | Internal (factory calibrated) |
| Nhiệt độ hoạt động | -40 C to +85 C |
| Hộp | 28-SOIC (0.295 inch / 7.50 mm body width) |
| Kiểu lắp đặt | Surface Mount |
| Technology | nanoWatt XLP (deep sleep < 20 nA) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF26K80T-I/SO
| Chân 1 | MCLR — Master Clear (Reset) input, active low |
| Chân 2 | RA0 — PORTA bit 0 / AN0 analog input |
| Chân 3 | RA1 — PORTA bit 1 / AN1 analog input |
| Chân 4 | RA2 — PORTA bit 2 / AN2 analog input |
| Chân 5 | RA3 — PORTA bit 3 / AN3 analog input |
| Chân 6 | RA4 — PORTA bit 4 / AN4 / T0CKI |
| Chân 7 | RA5 — PORTA bit 5 / AN5 |
| Chân 8 | RA6 — PORTA bit 6 / OSC2 |
| Chân 9 | RA7 — PORTA bit 7 / OSC1 |
| Chân 10 | VSS — Ground |
| Chân 11 | VDD — Positive supply voltage (1.8V-3.6V) |
| Chân 12 | RB0 — PORTB bit 0 / INT0 |
| Chân 13 | RB1 — PORTB bit 1 / INT1 |
| Chân 14 | RB2 — PORTB bit 2 |
| Chân 15 | RB3 — PORTB bit 3 |
| Chân 16 | RB4 — PORTB bit 4 |
| Chân 17 | RB5 — PORTB bit 5 |
| Chân 18 | RB6 — PORTB bit 6 / ICSP programming clock |
| Chân 19 | RB7 — PORTB bit 7 / ICSP programming data |
| Chân 20 | VSS — Ground |
| Chân 21 | AVDD — Analog positive supply voltage |
| Chân 22 | AVSS — Analog ground |
| Chân 23 | RC0 — PORTC bit 0 |
| Chân 24 | RC1 — PORTC bit 1 / CANRX (ECAN receive) |
| Chân 25 | RC2 — PORTC bit 2 / CANTX (ECAN transmit) |
| Chân 26 | RC3 — PORTC bit 3 |
| Chân 27 | RC4 — PORTC bit 4 |
| Chân 28 | RC5 — PORTC bit 5 |
Ứng dụng tiêu biểu
PIC18LF26K80T-I/SO phù hợp cho 6 Áp dụngs: Industrial CAN Node / Sensor Hub, Automotive Body Control Module, Building Automation / HVAC Controller, Capacitive Touch User Interface, Battery-Powered Wireless Sensor Node, Elevator Control Panel Node.
Industrial CAN Node / Sensor Hub
The PIC18LF26K80T-I/SO is purpose-built for industrial CAN sensor nodes thanks to its integrated hardware ECAN 2.0B peripheral with 6 mailboxes and the nanoWatt XLP deep-sleep mode drawing under 20nA. The 64KB flash holds full CANopen or DeviceNet stacks plus application logic, while the 12-bit ADC digitizes sensor signals at up to 300 ksps. Designers place the IC at the end of a CAN bus with 120-ohm termination, route CANTX/CANRX through ESD-protected transceivers, and leverage deep sleep between transmissions to extend battery life in remote sensors.
Được đề xuất
Automotive Body Control Module
The PIC18LF26K80T-I/SO serves body-control ECUs where 24 I/O pins drive LEDs, relays, and switch inputs across door, lighting, and HVAC subsystems. Its 1.8V-3.6V operation suits body-controller supply rails post-LDO regulation, and the CTMU enables cost-effective capacitive touch buttons for interior panels. The ECAN module links the body controller to the vehicle CAN bus at 500 kbps, while 16 MIPS occupancy leaves processing headroom for body-control algorithms and diagnostics. Add external watchdog and TVS protection for 12V automotive transients.
Được đề xuất
Building Automation / HVAC Controller
The PIC18LF26K80T-I/SO excels in building automation controllers, from VAV damper nodes to elevator panels and HVAC zone controllers. Its nanoWatt XLP deep sleep below 20nA with RAM retention allows battery-backed sensors to operate for years without replacement, while the 12-bit ADC reads thermistor, humidity, and pressure transducers with high resolution. The ECAN module communicates with centralized building automation panels using CAN-based protocols. Implement the IC with a 32.768 kHz external crystal for RTC timing across sleep cycles.
Được đề xuất
Capacitive Touch User Interface
The PIC18LF26K80T-I/SO integrates the CTMU (Charge Time Measurement Unit) hardware block for capacitive touch sensing without external analog components. Each CTMU channel supports touch buttons, sliders, and proximity sensors by measuring charge time on a PCB pad through a known current source and ADC. Combined with 64KB flash for touch-algorithm firmware and nanoWatt XLP deep sleep, the IC delivers responsive touch UIs in battery-powered remote controls, white goods panels, and appliance interfaces. Use guard rings and grounded copper pours around touch pads per Microchip AN1250.
Được đề xuất
Battery-Powered Wireless Sensor Node
The PIC18LF26K80T-I/SO serves as the host MCU in 2.4GHz or sub-GHz wireless sensor nodes where nanoWatt XLP deep sleep below 20nA with full RAM retention is critical for multi-year battery life. The 64KB flash supports complete wireless protocol stacks (e.g., MiWi, custom proprietary, or simple LoRaWAN MAC), while 4KB RAM buffers sensor data and transmit packets. Pair the IC with a sub-GHz transceiver over SPI, wake from sleep via timer interrupt or external interrupt, transmit, and return to deep sleep within milliseconds.
Được đề xuất
Elevator Control Panel Node
The PIC18LF26K80T-I/SO suits distributed elevator control panel nodes where 24 I/O pins drive button LEDs, segment displays, and floor-call switches while the ECAN module links each panel to the main elevator controller. Its 16 MIPS occupancy handles local debouncing, LED multiplexing, and CAN message processing without latency. Designers benefit from the 1.8V-3.6V operation that aligns with modern elevator safety-rail voltages, plus the CTMU for vandal-resistant capacitive floor buttons. Add isolated CAN transceivers and supervised watchdog for safety-critical loops.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF26K80T-I/SO — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18LF26K80-I/SO | PIC18F26K80T-I/SO | PIC18F26K80-I/SO | PIC18LF46K80T-I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Program Memory | 64 KB | 64 KB | 64 KB | 64 KB | 256 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 8 KB |
| Operating Voltage | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 3.6V |
| ECAN Module | Yes | Yes | Yes | Yes | Yes |
| Maximum Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Deep Sleep Current | < 20 nA | < 20 nA | < 20 nA | < 20 nA | < 20 nA |
Bảo phân biệt quan trọng
- Integrated hardware ECAN module eliminates external CAN controller (vsPIC18LF26K22T-I/SO)
- Low-voltage operation optimized for battery designs (vsPIC18F26K80T-I/SO)
- nanoWatt XLP deep sleep below 20nA with full RAM retention (vsPIC18LF46K80T-I/SO)
Ghi chú thiết kế
Decouple VDD with a 100nF ceramic capacitor as close to the pin as possible, plus a bulk 10uF tantalum or ceramic capacitor. AVDD should also have its own 100nF decoupling capacitor. Estimated: at 64MHz full execution, the LF variant draws approximately 10-15mA from a 3.3V supply. For battery designs, switch to nanoWatt XLP sleep modes whenever the application is idle - this drops consumption to under 20nA with RAM retention.
Route CANTX and CANRX signals as a differential pair to the CAN transceiver (e.g., MCP2551), keeping the trace length under 50mm and avoiding splits in the ground plane underneath. Place the 120-ohm CAN bus termination resistors at each end of the bus, not at every node. Use TVS diodes rated for 12V automotive transients on the bus pins for safety-critical applications.
The LF suffix means low-voltage (1.8V-3.6V); do not power this die above 3.6V or the device will be damaged. If your system runs from 5V, use the PIC18F26K80T-I/SO variant instead. The MCLR pin should be pulled high through a 10k resistor with a 100nF capacitor to ground for proper reset, unless the internal MCLR function is disabled via configuration bits. ICSP programming pins RB6/RB7 must not be pulled low at power-up or the device will enter programming mode.
The 28-SOIC package has a thermal resistance of approximately 80-90 C/W, which is adequate for industrial temperatures at typical MCU operating currents under 20mA. Estimated: at 3.3V and 64MHz drawing 15mA, the device dissipates about 50mW, resulting in a 4C junction temperature rise above ambient - well within safe limits. No external heatsink is required.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Standard PIC18LF26K80T-I/SO is not AEC-Q100 qualified; choose PIC18F26K80T-I/SO automotive variants (with -Q1 suffix) for automotive designs.
