PIC18LF46K42T-I/MV - 64KB Flash XLP 8-bit MCU | Microchip
部品番号: PIC18LF46K42T-I/MV ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.07 | $30.70 |
| 100 | $2.74 | $274.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.18 | $2,180.00 |
PIC18LF46K42T-I/MV 概要
What is a low-power 8-bit microcontroller? It is a microcontroller class that combines a Harvard-architecture 8-bit CPU, integrated peripherals, and aggressive sleep modes targeted at battery-powered or energy-harvesting embedded designs. Within the broader hierarchy, the PIC18LF46K42 sits as: 8-bit MCU -> PIC18 family -> PIC18Fxx_K42 sub-family -> low-power XLP variant. It typically appears below a 16-bit dsPIC or 32-bit Cortex-M0+ device in cost and complexity, but offers superior code density and interrupt response for straightforward control tasks.
Key features include eXtreme Low Power (XLP) technology with sub-uA sleep currents, the ADC2 with automated math and charge-pump operation, DMA for offloading core data movement, peripheral pin select (PPS) for flexible signal routing, and a wide operating voltage range of 1.8 V to 5.5 V (F-version supports down to 2.3 V). The integrated CVD module implements hardware capacitive touch sensing without an external analog front end.
The architecture pairs a RISC PIC18 core with separate program and data buses, 31-level hardware stack, vectored interrupts with priority levels, and Direct Memory Access between peripherals and memory, allowing background data movement while the CPU sleeps. This combination delivers deterministic real-time response at modest power budgets.
Typical applications include IoT sensor nodes, home appliances and white goods, capacitive touch human-machine interfaces, battery-powered handheld instruments, automotive body electronics (non-safety), and low-cost industrial control modules. The MV suffix denotes the tape-and-reel UQFN-40 5x5 mm package.
When designing with the PIC18LF46K42T-I/MV, verify PPS assignments early because each peripheral function must be mapped to a physical pin via software registers; mistakes here are a common source of bring-up failures. Also confirm the 1.8 V minimum for the LF variant - applying 1.8 V to the F-variant PIC18F46K42 will fail to start.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not found in the manufacturer datasheet alone.
ドロップイン代替品: PIC18LF46K42T-I/MV — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: PIC18LF46K42T-I/MV （同一形状・フットプリント） — 相違点: DAC, Package, ADC, Comparators, Operating Temperature.
クイック比較ツール — 並列比較する代替部品を選択:
PIC18LF46K42-I/MV
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PIC18F46K42T-I/MV
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.85 / 個
データシートを見る →PIC18LF46K40-I/MV
✅ ドロップイン✓ 在庫あり
$1.78 / 個
データシートを見る →PIC18LF46K42-E/MV
✅ ドロップイン✓ 在庫あり
$1.92 / 個
データシートを見る →PIC18LF46K42T-I/MV 最大定格＆電気的特性
| Core Processor | PIC18 |
| Core Size | 8-bit |
| 最大クロック周波数 | 64 MHz |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 4 KB |
| Data EEPROM | 1 KB |
| ADC Resolution | 12-bit (ADC2) |
| Number of I/O Pins | 36 I/O |
| 動作電源電圧 | 1.8 V to 5.5 V |
| 動作温度 | -40 C to +85 C (Industrial, 'I' suffix) |
| 実装タイプ | Surface Mount |
| パッケージ | 40-pin UQFN (MV) 5x5 mm |
| Connectivity | I2C, LINbus, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, LVD, POR, PWM, WDT |
| DMA | 2-channel DMA |
| DAC | 5-bit DAC |
| Capacitive Touch | Hardware CVD (Charge pump) |
| RoHS ステータス | Compliant |
| Lead-Free | Yes |
PIC18LF46K42T-I/MV ピン構成
| ピン 1 | RA5 — Port A bit 5 (I/O, also used for PPS functions) |
| ピン 2 | RA4 — Port A bit 4 (I/O) |
| ピン 3 | RA3 — Port A bit 3 (I/O) |
| ピン 4 | RA2 — Port A bit 2 (I/O) |
| ピン 5 | RA1 — Port A bit 1 (I/O, ICSPCLK) |
| ピン 6 | RA0 — Port A bit 0 (I/O, ICSPDAT) |
| ピン 7 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
| ピン 8 | VSS — Ground reference |
| ピン 9 | RA7 — Port A bit 7 (I/O, also OSC1) |
| ピン 10 | RA6 — Port A bit 6 (I/O, also OSC2) |
| ピン 11 | RC5 — Port C bit 5 (I/O) |
| ピン 12 | RC4 — Port C bit 4 (I/O) |
| ピン 13 | RC3 — Port C bit 3 (I/O, also SCL) |
| ピン 14 | RC2 — Port C bit 2 (I/O, also SDA) |
| ピン 15 | RC1 — Port C bit 1 (I/O, also CCP2) |
| ピン 16 | RC0 — Port C bit 0 (I/O, also CCP1) |
| ピン 17 | RC6 — Port C bit 6 (I/O, also TX) |
| ピン 18 | RC7 — Port C bit 7 (I/O, also RX) |
| ピン 19 | VSS — Ground reference |
| ピン 20 | VDD — Positive supply voltage |
| ピン 21 | RB0 — Port B bit 0 (I/O, also INT) |
| ピン 22 | RB1 — Port B bit 1 (I/O, also INT1) |
| ピン 23 | RB2 — Port B bit 2 (I/O) |
| ピン 24 | RB3 — Port B bit 3 (I/O, also MSSP/SPI) |
| ピン 25 | RB4 — Port B bit 4 (I/O) |
| ピン 26 | RB5 — Port B bit 5 (I/O) |
| ピン 27 | RB6 — Port B bit 6 (I/O, also ICSP clock) |
| ピン 28 | RB7 — Port B bit 7 (I/O, also ICSP data) |
| ピン 29 | RD0 — Port D bit 0 (I/O) |
| ピン 30 | RD1 — Port D bit 1 (I/O) |
| ピン 31 | RD2 — Port D bit 2 (I/O) |
| ピン 32 | RD3 — Port D bit 3 (I/O) |
| ピン 34 | RD4 — Port D bit 4 (I/O) |
| ピン 35 | RD5 — Port D bit 5 (I/O) |
| ピン 36 | RD6 — Port D bit 6 (I/O) |
| ピン 37 | RD7 — Port D bit 7 (I/O) |
| ピン 38 | RE3 — Port E bit 3 (I/O) |
| ピン 39 | VSS — Ground reference (bottom thermal pad) |
| ピン 40 | RE2 — Port E bit 2 (I/O) |
| ピン 33 | AVDD — Analog supply voltage |
主な用途
PIC18LF46K42T-I/MV の用途: 6 件s: IoT Sensor Nodes, Capacitive Touch Human-Machine Interfaces, Home Appliances and White Goods, Battery-Powered Handheld Instruments, Automotive Body Electronics (Non-Safety), Low-Cost Industrial Control Modules.
IoT Sensor Nodes
The PIC18LF46K42T-I/MV's XLP (eXtreme Low Power) technology and 1.8 V minimum VDD make it ideal for IoT sensor nodes powered by coin cells or energy harvesters. The 12-bit ADC2 with automated oversampling and threshold comparison enables battery voltage monitoring and sensor conditioning while the CPU stays in sleep, while the 2-channel DMA moves data from peripherals to RAM without waking the core. The 64 KB Flash supports protocol stacks such as LoRaWAN or BLE command shims, and the UQFN-40 5x5 mm package fits in sub-1 square inch PCB layouts typical of wireless sensor motes. Use this part when you need deterministic low-power operation with on-board analog conditioning for thermocouple, RTD, or environmental sensors.
おすすめ
Capacitive Touch Human-Machine Interfaces
The PIC18LF46K42T-I/MV's hardware Capacitive Voltage Divider (CVD) module implements capacitive touch sensing without an external analog front end or dedicated touch IC. Per the Microchip datasheet, CVD operates with an integrated charge pump, enabling reliable touch acquisition at low VDD and across harsh industrial noise environments. The combination of 35 ADC2 channels, DMA-driven touch scanning, and the 64 MHz CPU allows scanning of 16+ touch pads with millisecond response while keeping average current under 10 uA. The UQFN-40 package and surface-mount profile suit front-panel PCBs behind glass overlays. Pair this part with mechanically rugged touch pads and an FPC connector for a sealed HMI front panel.
おすすめ
Home Appliances and White Goods
The PIC18LF46K42T-I/MV's combination of 36 I/O, multiple PWM channels, 12-bit ADC2, and the extended peripheral set (I2C, SPI, UART, LINbus) directly supports white-goods motor control boards, washing machine user interfaces, induction cooktop controllers, and dishwasher control modules. The 'I' industrial temperature grade (-40 to +85 C) covers appliance and under-hood automotive body electronics environments, while the 1.8 V operation suits battery-backed RTC retention paths. Per Microchip application notes, the PPS (Peripheral Pin Select) feature simplifies board layout by remapping UART/SPI/PWM to alternate pins without board rework.
おすすめ
Battery-Powered Handheld Instruments
Handheld multimeters, portable data loggers, and field-test instruments benefit from the PIC18LF46K42T-I/MV's sub-uA sleep current and the ADC2 module's ability to operate while the CPU is in sleep. The integrated DMA offloads waveform capture or sensor sampling to the peripheral layer while the CPU idles, extending battery life by an order of magnitude over equivalent polling architectures. The 64 KB Flash stores calibration tables, custom menu strings, and measurement algorithms, while the 4 KB SRAM buffers instantaneous readings. Per the datasheet, the UQFN-40 5x5 mm package and -40 to +85 C industrial range suit both indoor lab and outdoor field use.
おすすめ
Automotive Body Electronics (Non-Safety)
For non-safety automotive body applications such as interior lighting, seat controllers, HVAC dampers, mirror adjusters, and accessory modules, the PIC18LF46K42T-I/MV offers LINbus connectivity, an extended PWM block, and -40 to +85 C industrial temperature grade. The 12-bit ADC2 handles multiple sensor inputs (temperature, position, current) with automated averaging, reducing software overhead. Designers should select the AEC-Q100 qualified PIC18F46K42T-E/MV variant for OEM body-electronics programs requiring automotive certification; the LF-variant suits aftermarket and accessory modules where industrial grade is acceptable.
おすすめ
Low-Cost Industrial Control Modules
The PIC18LF46K42T-I/MV serves well in PLC expansion modules, sensor transmitter boards, motor driver controllers, and industrial telemetry devices. The 12-bit ADC2 with 35 channels drives multi-sensor analog front ends, the PWM block drives stepper motor or LED driver stages, and the DMA-driven UART/SPI offloads fieldbus protocols like Modbus RTU. Per the Microchip PIC18Fxx_K42 datasheet, the device is rated for industrial-grade -40 to +85 C operation and supports sleep currents below 1 uA in RTCC-only mode. The UQFN-40 5x5 mm footprint enables compact DIN-rail module designs.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: PIC18LF46K42T-I/MV — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | PIC18LF46K42-I/MV | PIC18LF46K42-I/PT | PIC18F46K42T-I/MV | PIC18LF46K40-I/MV | PIC18LF46K42-E/MV |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | UQFN-40 (MV) 5x5 mm | UQFN-40 (MV) 5x5 mm - same | TQFP-44 (PT) 10x10 mm - different | UQFN-40 (MV) 5x5 mm - same | UQFN-40 (MV) 5x5 mm - same | UQFN-40 (MV) 5x5 mm - same |
| Program Memory (Flash) | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Data RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Data EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Maximum Clock Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Minimum VDD | 1.8 V (LF variant) | 1.8 V | 1.8 V | 2.3 V (F-variant, +28%) | 1.8 V | 1.8 V |
| Operating Temperature | -40 C to +85 C (I-grade) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (extended) |
| ADC2 with Hardware CVD | Yes (35 channels) | Yes | Yes | Yes | No - K40 lacks ADC2/CVD | Yes |
| DMA Channels | 2 channels | 2 | 2 | 2 | None | 2 |
主な差別化要因
- XLP eXtreme Low Power technology with sub-uA sleep currents （vs PIC18LF46K40-I/MV)
- ADC2 with hardware CVD for capacitive touch without external components （vs PIC18LF46K40-I/MV)
- Integrated 2-channel DMA offloads core data movement （vs PIC18LF46K40-I/MV)
- 1.8 V minimum VDD operation (LF prefix) （vs PIC18F46K42T-I/MV)
設計ノート
Per the Microchip PIC18Fxx_K42 datasheet, the LF variant operates from 1.8 V to 5.5 V. Use a 100 nF ceramic decoupling capacitor on each VDD/VSS pin pair placed within 5 mm of the pin, plus a bulk 10 uF tantalum or ceramic at the board supply entry. For low-power designs, route unused I/O as outputs driving low and disable unused peripherals via PMD registers to minimize leakage. The 'LF' prefix is mandatory if the design must start up at 1.8 V; the F-variant fails to start below 2.3 V.
The UQFN-40 5x5 mm package has an exposed thermal pad (EP) on the underside that MUST be soldered to the board ground plane for thermal dissipation and mechanical reliability. Per IPC-7351 nominal land pattern, allocate at least 4-6 thermal vias in the EP pad to a second-layer ground pour. Pin 1 identification is critical - the dot is on the top side as shown in the package outline; confirm with a polarizing feature on the PCB silk-screen before hand soldering prototypes.
Peripheral Pin Select (PPS) allows remapping most digital peripherals (UART, SPI, PWM, etc.) to alternate physical pins via software registers. Although this greatly simplifies PCB routing, errors in PPS configuration are a common cause of 'dead board' bring-up failures - always verify PPS unlock sequence (PPSLOCKED bit) and confirm the chosen pin supports the desired peripheral function. Analog functions such as the ADC2 and DAC are NOT remappable; these pins are fixed by silicon.
Common pitfalls include: (1) confusing LF and F variants in BOMs - LF starts at 1.8 V, F starts at 2.3 V; (2) forgetting the 100 nF + bulk cap requirement on VDD/VSS pairs, causing brown-out resets; (3) not enabling the FVR (Fixed Voltage Reference) before ADC2 calibration - calibration accuracy depends on FVR; (4) leaving ICSP pins (RB6/RB7) as analog inputs without disabling them via PPS, which prevents in-circuit programming; (5) forgetting to clear the GIE/PEIE bits before entering Sleep for power-sensitive applications.
The UQFN-40 package's tight 0.4 mm pitch demands clean reflow profiles - peak temperature 245 C for lead-free SAC-305 solder paste, with a soak time of 60-90 seconds above 220 C. Per IPC J-STD-020, the MSL rating for this package is MSL-3 at 250 C; vacuum-sealed parts have a floor-life of 168 hours after bag opening. For high-vibration environments, add corner staking epoxy to mitigate UQFN-EP thermal-fatigue failure modes.
コンプライアンス情報
RoHS compliant per Microchip product page. Industrial -40 to +85 C operating range ('I' suffix). AEC-Q100 not qualified - choose PIC18F46K42T-E/MV for automotive OEM. Refer to Microchip PIC18(L)FxxK42 family datasheet 40001919B for full compliance documentation.
