PIC18LF56K42T-I/MV - 8-Bit 64MHz 64KB Flash XLP MCU | Microchip
MPN： PIC18LF56K42T-I/MV ✓ 啟用中PIC18LF56K42T-I/MV 概覽
What is a microcontroller? A microcontroller (MCU) is a single-chip computer integrating CPU, non-volatile program memory (Flash), volatile data memory (RAM), EEPROM, and a rich set of peripherals (ADC, timers, communication ports). Within Microchip's taxonomy, this part belongs to PIC18F/LF XLP 18K family -> 8-bit PIC MCU -> PIC microcontroller -> microcontroller -> embedded semiconductor. The XLP (eXtreme Low Power) designation targets battery-powered and energy-harvesting designs where nanoWatt sleep currents and fast wake-up times are critical.
Key features include 44 user I/O pins, 12-bit ADC2 with computation, two 8-bit DACs, three comparators with 5-bit DAC references, 8-bit DMA controller, vectored interrupts with peripheral interrupt controllers, configurable logic cells (CLC), Complementary Waveform Generator (CWG), multiple PWM/SCCP/MCCP channels, and rich serial peripherals (UART, SPI, I2C). The 64 MHz internal oscillator and 4x PLL deliver 16 MIPS instruction throughput while the XLP sleep mode can drop quiescent current below 100 nA.
The K42 architecture adds hardware-accelerated math (8x8 hardware multiplier, single-cycle 16-bit math), zero-cross detection for triac control, and Direct Memory Access that lets peripherals move data without CPU intervention - reducing active-mode time and overall system power.
Typical applications include IoT sensor nodes, home appliances (washing machine, induction cooktop, white goods UI), portable medical devices, BLDC motor control, LED lighting controllers, and battery-powered instrumentation. Designers favor the LF variant when the supply rail is 2x AA/AAA or a Li-ion cell under boost regulation.
When designing with this MCU, allocate one decoupling 100 nF cap per VDD pin and a 1 uF bulk cap near the exposed pad; route AVSS/AVDD separately for clean ADC reference. Use the DMA for periodic sensor reads so the core can stay in sleep - that is where XLP delivers its largest energy savings.
直接替換替代品，適用於 PIC18LF56K42T-I/MV — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC18LF56K42T-I/MV （相同外形與佔位） — 差異在於 Package, Program Memory (Flash), ADC, DMA Channels, Family.
PIC18F56K42T-I/MV
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF55K42T-I/MV
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF47K42-I/MV
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF56K42-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC18LF56K42T-I/MV 最大額定值與電氣特性
| Core | PIC18 8-bit |
| Family | PIC18F XLP 18K |
| Instruction Set | PIC18 RISC |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 4 KB |
| EEPROM | 256 B |
| Maximum CPU Frequency | 64 MHz |
| MIPS Performance | 16 MIPS |
| Operating Voltage | 1.8 V to 3.6 V |
| I/O Pins | 44 |
| ADC | 12-bit ADC2 (computation) |
| DAC | 2 x 8-bit |
| Comparators | 3 with 5-bit DAC reference |
| DMA Channels | 8-bit DMA |
| 封裝 | 48-UQFN (6x6 mm) with exposed pad |
| 工作溫度 | -40C to +85C (Industrial) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
PIC18LF56K42T-I/MV 腳位配置
| 腳位 1 | RA0/ANA0 — Port A bit 0 / Analog input 0 |
| 腳位 2 | RA1/ANA1 — Port A bit 1 / Analog input 1 |
| 腳位 3 | RA2/ANA2 — Port A bit 2 / Analog input 2 |
| 腳位 4 | RA3/ANA3 — Port A bit 3 / Analog input 3 |
| 腳位 5 | RA4/ANA4 — Port A bit 4 / Analog input 4 |
| 腳位 6 | RA5/ANA5 — Port A bit 5 / Analog input 5 |
| 腳位 7 | RA6/ANA6 — Port A bit 6 / Analog input 6 |
| 腳位 8 | RA7/ANA7 — Port A bit 7 / Analog input 7 |
| 腳位 9 | RB0/ANB0 — Port B bit 0 / Analog input B0 |
| 腳位 10 | RB1/ANB1 — Port B bit 1 / Analog input B1 |
| 腳位 11 | VDD — Power supply (1.8-3.6 V) |
| 腳位 12 | VSS — Ground |
| 腳位 13 | RB2/ANB2 — Port B bit 2 / Analog input B2 |
| 腳位 14 | RB3/ANB3 — Port B bit 3 / Analog input B3 |
| 腳位 15 | RB4/ANB4 — Port B bit 4 / Analog input B4 |
| 腳位 16 | RB5/ANB5 — Port B bit 5 / Analog input B5 |
| 腳位 17 | RB6/ANB6 — Port B bit 6 / Analog input B6 / ICSPCLK |
| 腳位 18 | RB7/ANB7 — Port B bit 7 / Analog input B7 / ICSPDAT |
| 腳位 19 | RC0 — Port C bit 0 |
| 腳位 20 | RC1 — Port C bit 1 |
| 腳位 21 | RC2 — Port C bit 2 |
| 腳位 22 | RC3 — Port C bit 3 |
| 腳位 23 | RC4 — Port C bit 4 |
| 腳位 24 | RC5 — Port C bit 5 |
| 腳位 25 | RC6 — Port C bit 6 / TX |
| 腳位 26 | RC7 — Port C bit 7 / RX |
| 腳位 27 | VSS — Ground |
| 腳位 28 | VDD — Power supply (1.8-3.6 V) |
| 腳位 29 | RD0 — Port D bit 0 |
| 腳位 30 | RD1 — Port D bit 1 |
| 腳位 31 | RD2 — Port D bit 2 |
| 腳位 32 | RD3 — Port D bit 3 |
| 腳位 33 | RD4 — Port D bit 4 |
| 腳位 34 | RD5 — Port D bit 5 |
| 腳位 35 | RD6 — Port D bit 6 |
| 腳位 36 | RD7 — Port D bit 7 |
| 腳位 37 | RE0 — Port E bit 0 |
| 腳位 38 | RE1 — Port E bit 1 |
| 腳位 39 | RE2 — Port E bit 2 |
| 腳位 40 | RE3 — Port E bit 3 |
| 腳位 41 | RF0 — Port F bit 0 |
| 腳位 42 | RF1 — Port F bit 1 |
| 腳位 43 | RF2 — Port F bit 2 |
| 腳位 44 | RF3 — Port F bit 3 |
| 腳位 45 | RF4 — Port F bit 4 |
| 腳位 46 | RF5 — Port F bit 5 |
| 腳位 47 | VSS — Ground |
| 腳位 48 | VDD — Power supply (1.8-3.6 V) |
典型應用
PIC18LF56K42T-I/MV 適用於 6 應用s: IoT Sensor Node, Home Appliance Control (White Goods), Portable Medical Device, BLDC / FOC Motor Control, LED Lighting Controller, Battery-Powered Instrumentation.
IoT Sensor Node
The PIC18LF56K42T-I/MV suits battery-powered IoT sensor nodes because its XLP nanoWatt technology delivers sub-100 nA sleep current and the 12-bit ADC2 with computation supports hardware-averaged sensor reads while the core stays asleep. Direct 1.8 V to 3.6 V operation eliminates the boost converter normally required for 2x AA cells, cutting BOM cost. Hardware DMA moves sensor data without waking the CPU, extending coin-cell life to multiple years in typical wake-and-transmit duty cycles.
推薦
Home Appliance Control (White Goods)
Home appliances such as induction cooktops, washing machines and dishwasher HMIs use the PIC18LF56K42T-I/MV for its 12-bit ADC2 with zero-cross detection, complementary waveform generator and three comparators with DAC references. The CWG and PWM/SCCP/MCCP channels drive IGBT/MOSFET bridges for triac or zero-voltage-switched heater control. 64 KB Flash is ample for capacitive-touch UI libraries plus motor-control state machines.
推薦
Portable Medical Device
Portable medical devices including pulse oximeters, glucose meters and handheld spirometers choose the PIC18LF56K42T-I/MV because the 12-bit ADC2 with oversampling and hardware averaging achieves clinical-grade signal integrity, while the XLP sleep current keeps the device within IEC 60601 battery-life budgets. Hardware DMA and peripheral trigger let the MCU wake only on timer or comparator events - critical for patient-safety watchdogs and low-power alarms.
推薦
BLDC / FOC Motor Control
BLDC and FOC motor control for fans, pumps and small drones use the PIC18LF56K42T-I/MV because its Complementary Waveform Generator and multiple PWM channels provide center-aligned switching with dead-band control for 3-phase bridges. The 64 MHz / 16 MIPS core runs sensorless FOC algorithms in real time while the zero-cross detection hardware accelerates back-EMF commutation, eliminating dedicated motor-control ICs in cost-sensitive designs.
推薦
LED Lighting Controller
LED lighting controllers and commercial luminaires embed the PIC18LF56K42T-I/MV because the 12-bit ADC reads ambient-light and supply-current sense signals, while the high-resolution PWM/MCCP channels drive constant-current LED strings at dimming ratios below 0.1%. The XLP sleep mode keeps standby power below 0.5 W, supporting Energy Star and EU Ecodesign standby limits in connected luminaires.
推薦
Battery-Powered Instrumentation
Battery-powered instrumentation including handheld multimeters, dataloggers and field meters leverage the PIC18LF56K42T-I/MV's 1.8 V to 3.6 V supply, XLP sleep current and 12-bit ADC2 with hardware accumulation to extend measurement uptime per battery. The 44 I/O pins drive segmented LCDs through peripheral-managed charge pumps, and the UART/SPI/I2C peripherals communicate with Bluetooth or USB-C modules for field connectivity.
推薦
推薦產品摘要
工程參考資料，適用於 PIC18LF56K42T-I/MV — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC18F56K42T-I/MV | PIC18LF55K42T-I/MV | PIC18LF47K42-I/MV | PIC18LF56K42-I/PT |
|---|---|---|---|---|---|
| Package | 48-UQFN (6x6 mm) | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-TQFP (7x7 mm) - different footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash | 64 KB | 64 KB | 32 KB | 128 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 8 KB | 4 KB |
| Operating Voltage | 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 | 1.8 V to 3.6 V |
| Max CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| I/O Pins | 44 | 44 | 44 | 36 | 44 |
| ADC | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 |
| Unit Price (qty 1) | $2.28 | $2.32 | $2.05 | $2.85 | $2.34 |
主要差異化特點
- Lowest minimum VDD in 48-UQFN K42 family (對比PIC18F56K42T-I/MV)
- Largest Flash in LF-family 48-UQFN line (對比PIC18LF55K42T-I/MV)
- More I/O pins than the 40-pin K42 sibling (對比PIC18LF47K42-I/MV)
設計說明
Place a 100 nF decoupling capacitor on each VDD pin (11, 28, 48) within 2 mm of the pad to suppress transient switching current. Add a bulk 1 uF to 10 uF ceramic on the supply rail near the exposed thermal pad. For the analog ADC reference, place the AVSS/AVDD filter capacitor at the dedicated analog pin to prevent ADC reference ripple coupling into conversion results. Note: the LF variant is designed for 1.8 V to 3.6 V only; voltages above 3.6 V will damage the part.
The 48-UQFN (6x6 mm) package requires a continuous exposed pad (EP) beneath the die for thermal and electrical ground connection. Stencil the EP with multiple apertures (typically 4-6 small openings totaling 50-70% coverage) to ensure uniform solder void distribution. Avoid placing vias-in-pad for the EP unless they are tented/capped - exposed vias will wick solder and starve the central ground connection.
The UPDI programming pin shares an I/O on PORTB (RB7) and requires a 4.7 kohm pull-up to VDD for reliable in-circuit programming; without it the debugger will fail to assert the high-voltage sequence. Do not use the LF variant on a 5 V rail - the VDD max is 3.6 V. When migrating code from PIC18F56K42 to PIC18LF56K42, verify all ADC references and digital thresholds since the internal FVR scales with VDD on the LF variant differently than the F-variant.
合規資訊
RoHS compliant per Microchip product page. Industrial -40C to +85C temperature grade; AEC-Q100 qualified variants available separately in the PIC18F56K42 family.
