PIC18LF55K42-I/MV - 8-Bit 64MHz 32KB Flash MCU | Microchip
MPN: PIC18LF55K42-I/MV ✓ Hoạt độngPIC18LF55K42-I/MV Tóm tắt
Bộ thay thế dễ dàng lắp đặt cho PIC18LF55K42-I/MV — 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 PIC18LF55K42-I/MV (cùng hình factor và footprint) — khác nhau ở ADC, Package, DAC, Family, Comparators.
PIC18LF55K42T-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F55K42-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF45K42-I/MV
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF47K42-I/MV
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F55K42T-I/MV
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18LF46K42-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18LF55K42-I/MV Tỷ lệ tối đa & tính chất điện
| Core | PIC18 8-bit RISC |
| Family | PIC18 (XLP) 18K |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Data SRAM | 2 KB |
| Data EEPROM | 256 B |
| Maximum CPU Frequency | 64 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V |
| Number of I/O Pins | 44 |
| Hộp | 48-pin UQFN EP (6x6 mm) |
| ADC | 12-bit (with computation) |
| DAC | Yes (5-bit / 8-bit) |
| Comparators | Yes |
| Timers / PWM | 8/16-bit timers with PWM, CWG |
| DMA | Yes |
| Vector Interrupts | Yes |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF55K42-I/MV
| Chân 1 | RA0 — Port A bit 0 (analog/digital I/O) |
| Chân 2 | RA1 — Port A bit 1 (analog/digital I/O) |
| Chân 3 | RA2 — Port A bit 2 (analog/digital I/O) |
| Chân 4 | RA3 — Port A bit 3 (analog/digital I/O) |
| Chân 5 | RA4 — Port A bit 4 (analog/digital I/O) |
| Chân 6 | RA5 — Port A bit 5 (analog/digital I/O) |
| Chân 7 | RA6 — Port A bit 6 (analog/digital I/O) |
| Chân 8 | RA7 — Port A bit 7 (analog/digital I/O) |
| Chân 9 | VSS — Ground reference |
| Chân 10 | VDD — Positive supply (1.8-3.6 V) |
| Chân 11 | RB0 — Port B bit 0 (interrupt-on-change) |
| Chân 12 | RB1 — Port B bit 1 (interrupt-on-change) |
| Chân 13 | RB2 — Port B bit 2 (interrupt-on-change) |
| Chân 14 | RB3 — Port B bit 3 (interrupt-on-change) |
| Chân 15 | RB4 — Port B bit 4 (interrupt-on-change) |
| Chân 16 | RB5 — Port B bit 5 (interrupt-on-change) |
| Chân 17 | RB6 — Port B bit 6 (PGC/ICSP clock) |
| Chân 18 | RB7 — Port B bit 7 (PGD/ICSP data) |
| Chân 19 | RC0 — Port C bit 0 |
| Chân 20 | RC1 — Port C bit 1 |
| Chân 21 | RC2 — Port C bit 2 |
| Chân 22 | RC3 — Port C bit 3 |
| Chân 23 | RC4 — Port C bit 4 |
| Chân 24 | RC5 — Port C bit 5 |
| Chân 25 | RC6 — Port C bit 6 |
| Chân 26 | RC7 — Port C bit 7 |
| Chân 27 | VSS — Ground reference |
| Chân 28 | VDD — Positive supply (1.8-3.6 V) |
| Chân 29 | RD0 — Port D bit 0 |
| Chân 30 | RD1 — Port D bit 1 |
| Chân 31 | RD2 — Port D bit 2 |
| Chân 32 | RD3 — Port D bit 3 |
| Chân 33 | RD4 — Port D bit 4 |
| Chân 34 | RD5 — Port D bit 5 |
| Chân 35 | RD6 — Port D bit 6 |
| Chân 36 | RD7 — Port D bit 7 |
| Chân 37 | VSS — Ground reference |
| Chân 38 | VDD — Positive supply (1.8-3.6 V) |
| Chân 39 | RE0 — Port E bit 0 |
| Chân 40 | RE1 — Port E bit 1 |
| Chân 41 | RE2 — Port E bit 2 |
| Chân 42 | RE3 — Port E bit 3 |
| Chân 43 | MCLR — Master clear (reset, active low) |
| Chân 44 | RF0 — Port F bit 0 |
| Chân 45 | RF1 — Port F bit 1 |
| Chân 46 | RF2 — Port F bit 2 |
| Chân 47 | RF3 — Port F bit 3 |
| Chân 48 | RF4 — Port F bit 4 |
Ứng dụng tiêu biểu
PIC18LF55K42-I/MV phù hợp cho 7 Áp dụngs: Battery-Powered IoT Sensor Nodes, Consumer Appliance Control, Low-Power Handheld Instrumentation, White Goods and HVAC Fan Control, Smart Home Sensor Hubs, Industrial Control Front-Ends, Touch-Button and LED Lighting Controls.
Battery-Powered IoT Sensor Nodes
The PIC18LF55K42-I/MV is purpose-built for IoT sensor nodes that spend most of their life asleep. Its XLP nanoWatt technology delivers deep-sleep currents below 100 nA, and the 1.8 V minimum VDD pairs naturally with single-cell Li-ion or coin-cell batteries without a boost regulator. The 12-bit ADC with computation (ADC2) and DMA let the part wake, sample a sensor, average the result and return to sleep without waking the CPU - extending battery life by orders of magnitude versus polled designs.
Được đề xuất
Consumer Appliance Control
The PIC18LF55K42-I/MV suits consumer appliances such as coffee makers, washing machines and air purifiers, where 8-bit deterministic control is more important than raw compute. The vectored interrupts, 8/16-bit timers, PWM, and complementary waveform generator (CWG) support triac and motor control, while the 12-bit ADC reads temperature, pressure or flow sensors in real time. The 44 I/O pins leave headroom for keypads, displays and indicator LEDs on the same MCU.
Được đề xuất
Low-Power Handheld Instrumentation
Handheld meters, thermometers and multimeters benefit from the PIC18LF55K42-I/MV's small 6x6 mm UQFN footprint and low active current. The 12-bit ADC with computation and the on-chip DAC support analog signal conditioning for bridge, RTD or thermocouple sensors. The 32 KB Flash fits USB-CDC or UART command sets, while 2 KB SRAM handles display buffering and 256 B EEPROM stores calibration constants in-circuit.
Được đề xuất
White Goods and HVAC Fan Control
The PIC18LF55K42-I/MV drives brushless-DC and AC induction fan stages with its PWM, CWG and 12-bit ADC. Its 1.8-3.6 V VDD lets designers run the MCU directly from a regulated 3.3 V rail derived from the HVAC's 24 V supply. The 44 I/O support keypad input, triac firing, tachometer feedback and fault LEDs without external logic.
Được đề xuất
Smart Home Sensor Hubs
Smart-home bridges and PIR/zigbee sensor hubs use the PIC18LF55K42-I/MV as a low-power supervisor that wakes a higher-tier radio on activity. The DMA and 12-bit ADC2 with computation accelerate motion, light and temperature sensing, while the XLP sleep modes extend battery life to multi-year ranges. The UQFN EP package fits behind the PIR lens or on a coin-cell carrier board.
Được đề xuất
Industrial Control Front-Ends
Industrial PLC-style front-ends and process controllers deploy the PIC18LF55K42-I/MV to read 4-20 mA loops, switch relays and drive optocouplers. The vectored-interrupt controller and DMA keep deterministic response times for safety loops, and the -40 C to +85 C industrial rating meets the temperature envelope of factory-floor cabinets. The 32 KB Flash stores ladder logic or state-machine code with margin.
Được đề xuất
Touch-Button and LED Lighting Controls
Lighting controllers and capacitive touch-button panels leverage the PIC18LF55K42-I/MV's 12-bit ADC with computation, on-chip comparators and PWM channels. The DMA offloads LED dimming updates from the CPU, while the CWG and PWM drive MOSFETs for high-current LED strings. With 1.8 V minimum VDD the part can be powered from a small switching supply or USB bus.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF55K42-I/MV — 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 | PIC18LF55K42T-I/MV | PIC18F55K42-I/MV | PIC18LF45K42-I/MV | PIC18LF47K42-I/MV |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-UQFN EP (6x6) | 48-UQFN EP (6x6) - same | 48-UQFN EP (6x6) - same | 48-UQFN EP (6x6) - same | 48-UQFN EP (6x6) - same |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| I/O Pins | 44 | 44 | 44 | 36 | 36 |
| Maximum Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| ADC | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 |
| DMA / CIPs | Yes (CIPs, DMA, DIA) | Yes (identical die) | Yes (identical die) | Yes (same K42 family) | Yes (same K42 family) |
Bảo phân biệt quan trọng
- Wide 1.8-3.6 V supply range with XLP nanoWatt sleep (vsPIC18F55K42-I/MV)
- 44 I/O on the smallest 6x6 mm UQFN footprint (vsPIC18LF47K42-I/MV)
- Core Independent Peripherals (CIPs) + DMA offload the CPU (vsPIC18LF25K83-I/ML)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pair (pins 10/9, 28/27 and 38/37), and a bulk 1-10 uF near the supply pin cluster. The PIC18LF55K42-I/MV draws as little as 100 nA in deep-sleep, so leakage through the bulk capacitor's dielectric can dominate idle current - prefer X7R/X5R ceramics with low DC bias derating rather than Y5V.
The 48-pin UQFN EP package exposes a thermal pad on the underside; solder it to a continuous ground pour with at least four thermal vias to the inner ground plane. Without this, junction-to-ambient thermal resistance degrades significantly, especially at 64 MHz with all peripherals active. Keep the junction rise well under 30 C above ambient to stay within the -40 C to +85 C industrial rating.
Route the ICSP pins (RB6 = PGC, RB7 = PGD) directly to a 2x5 or 1x6 header for in-circuit programming. Keep the traces short and add a 10 kohm pull-up on MCLR (pin 43). Decouple MCLR with a 100 nF capacitor close to the pin to avoid spurious resets during ESD events.
The PIC18LF55K42-I/MV cannot exceed 3.6 V on any pin - if a 5 V peripheral is on the board, use the PIC18F55K42-I/MV (5 V-rated) instead. Also note that the analog input range on the 12-bit ADC shares the 0-VDD range; for rail-to-rail sensing of signals above VDD or below VSS, use the on-chip DAC and comparator path instead.
Keep analog traces (ADC inputs, DAC output, comparator reference) short and away from PWM/CWG outputs and clock lines. The K42 family is robust to mixed-signal routing, but a 10-20 mil ground trace between analog and digital sections plus a clean ground pour below the ADC reduces conversion noise. The exposed pad (EP) must be a single net (GND) for thermal and EMI reasons.
Thông tin tuân thủ
RoHS compliant per Microchip product page. The 'I' industrial temperature suffix (-40 C to +85 C) is non-automotive; AEC-Q100 variants are not provided; choose automotive-qualified PIC18 parts if required.
