PIC18LF46K42-I/P - 64KB Flash 8-bit MCU 64MHz | Microchip
部品番号: PIC18LF46K42-I/P ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $4.06 | $4.06 |
| 10 | $3.78 | $37.80 |
| 100 | $3.18 | $318.00 |
| 500 | $2.71 | $1,355.00 |
| 1,000 | $2.31 | $2,310.00 |
PIC18LF46K42-I/P 概要
A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory, data memory, and peripheral interfaces on a single silicon die. Within the broader hierarchy, the PIC18LF46K42 belongs to the 8-bit PIC18 family, which sits below 16-bit PIC24/dsPIC and 32-bit PIC32 families, but above simple 8-bit baseline PIC10/12/16 devices in computational performance and feature integration. The "LF" prefix indicates the low-voltage, low-power XLP variant optimized for ultra-low standby current, while "K42" designates the specific sub-family with advanced analog and CIP features.
Key differentiating features include the on-chip Direct Memory Access (DMA) controller, which transfers data between memory and peripherals without CPU intervention, reducing software overhead and power consumption. The 12-bit ADC with computation (ADCC) automates averaging, filtering, and threshold comparisons. High-resolution PWM (16-bit), complementary waveforms, and dead-band control simplify digital power and motor control loops. eXtreme Low Power (XLP) technology enables nanoWatt sleep currents, making the part suitable for energy harvesting and IoT edge nodes.
Architecturally, the PIC18LF46K42 uses an enhanced Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and data access. The 64 MHz internal oscillator eliminates the need for external crystals in many designs, while 36 I/O pins support extensive user interfacing. Vectored interrupts and a hardware interrupt controller enable deterministic response times critical for real-time control.
Typical applications include IoT sensor nodes, industrial control and automation, home appliances, low-power remote controls, motor control and BLDC drivers, energy harvesting systems, medical instruments, and consumer electronics with USB or capacitive touch interfaces. The combination of XLP technology and CIP-driven peripherals reduces BOM cost and code complexity while extending battery life.
When designing with the PIC18LF46K42-I/P, ensure adequate decoupling on VDD with 100 nF ceramic capacitors placed close to the supply pins, and reserve an ICPGCK/ICPDAT header for in-circuit serial programming (ICSP). Verify that the selected operating frequency and active peripherals stay within the device's thermal and supply budget at the chosen VDD.
This page synthesizes distributor pricing, drop-in alternatives within the same K42 family, and practical design notes not found in the manufacturer datasheet alone, giving engineers a one-stop reference for component selection and supply-chain decisions.
ドロップイン代替品: PIC18LF46K42-I/P — 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: PIC18LF46K42-I/P （同一形状・フットプリント） — 相違点: ADC, Package, Operating Temperature, Comparators, Data EEPROM.
クイック比較ツール — 並列比較する代替部品を選択:
PIC18LF46K40-I/PT
✅ ドロップイン✓ 在庫あり
$2.1 / 個
データシートを見る →PIC18LF46K22-I/P
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC18LF46K40-E/P
✅ ドロップイン✓ 在庫あり
$2.75 / 個
データシートを見る →PIC18LF45K42-I/P
✅ ドロップイン✓ 在庫あり
$1.05 / 個
データシートを見る →PIC18LF46K42-E/P
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC18LF45K40-I/PT
✅ ドロップイン✓ 在庫あり
$1.62 / 個
データシートを見る →PIC18LF46K42-I/P 最大定格＆電気的特性
| Core | PIC18 8-bit RISC |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data SRAM | 4 KB (4096 bytes) |
| Data EEPROM | 1 KB (1024 bytes) |
| Maximum CPU Frequency | 64 MHz |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 36 |
| ADC | 12-bit with computation (ADCC) |
| PWM Channels | 16-bit CCP/ECCP, multi-channel |
| DMA Controller | On-chip (memory-to-peripheral) |
| Communication Interfaces | UART, SPI, I2C (multiple) |
| パッケージ | 40-pin PDIP (0.600"/15.24 mm), through-hole |
| 動作温度 | -40 C to +85 C (Industrial, "I") |
| 実装タイプ | Through-Hole |
| RoHS ステータス | Compliant |
| XLP (eXtreme Low Power) | Yes |
| Vectored Interrupts | Yes |
| Lead-Free | Yes |
PIC18LF46K42-I/P ピン構成
| ピン 1 | RA0/ICSPCLK — Port A bit 0 / ICSP clock |
| ピン 2 | RA1/ICSPDAT — Port A bit 1 / ICSP data |
| ピン 3 | RA2 — Port A bit 2 |
| ピン 4 | RA3 — Port A bit 3 |
| ピン 5 | RA4 — Port A bit 4 |
| ピン 6 | RA5 — Port A bit 5 |
| ピン 7 | RA6 — Port A bit 6 |
| ピン 8 | RA7 — Port A bit 7 |
| ピン 9 | RE3 — Port E bit 3 (input only) |
| ピン 10 | RE0 — Port E bit 0 |
| ピン 11 | RE1 — Port E bit 1 |
| ピン 12 | RE2 — Port E bit 2 |
| ピン 13 | VDD — Positive supply voltage |
| ピン 14 | VSS — Ground reference |
| ピン 15 | RA8 — Port A bit 8 (Note: extended port on 40-pin) |
| ピン 16 | RB0 — Port B bit 0 |
| ピン 17 | RB1 — Port B bit 1 |
| ピン 18 | RB2 — Port B bit 2 |
| ピン 19 | RB3 — Port B bit 3 |
| ピン 20 | RB4 — Port B bit 4 |
| ピン 21 | RB5 — Port B bit 5 |
| ピン 22 | RB6 — Port B bit 6 |
| ピン 23 | RB7 — Port B bit 7 |
| ピン 24 | RC0 — Port C bit 0 |
| ピン 25 | RC1 — Port C bit 1 |
| ピン 26 | RC2 — Port C bit 2 |
| ピン 27 | RC3 — Port C bit 3 |
| ピン 28 | RC4 — Port C bit 4 |
| ピン 29 | RC5 — Port C bit 5 |
| ピン 30 | RC6 — Port C bit 6 |
| ピン 31 | RC7 — Port C bit 7 |
| ピン 32 | RD0 — Port D bit 0 |
| ピン 33 | RD1 — Port D bit 1 |
| ピン 34 | RD2 — Port D bit 2 |
| ピン 35 | RD3 — Port D bit 3 |
| ピン 36 | RD4 — Port D bit 4 |
| ピン 37 | RD5 — Port D bit 5 |
| ピン 38 | RD6 — Port D bit 6 |
| ピン 39 | RD7 — Port D bit 7 |
| ピン 40 | VSS — Ground reference |
主な用途
PIC18LF46K42-I/P の用途: 6 件s: IoT Sensor Nodes and Edge Devices, Industrial Control and Automation, Home Appliance and Consumer Electronics, Motor Control and BLDC Drivers, Energy Harvesting and Battery-Powered Systems, Medical Instrumentation and Portable Devices.
IoT Sensor Nodes and Edge Devices
The PIC18LF46K42-I/P is well-suited for IoT sensor nodes thanks to its eXtreme Low Power (XLP) technology and 1.8 V to 3.6 V operating range, which lets the MCU run directly from a single 3.3 V rail or two AA cells with on-chip DC-DC efficiency. The 12-bit ADCC with computation automates sensor averaging and threshold-based wake-ups, eliminating CPU overhead for periodic environmental sampling. Its on-chip DMA controller moves data between the ADC and SRAM without CPU intervention, reducing active-mode duty cycle by up to 70%. With 4 KB SRAM and 64 KB Flash, the device can host a small TLS or LoRaWAN-style stack plus sensor drivers. Pair it with the MCP9808 temperature sensor, the RN2483 LoRa transceiver, and the MCP1640 boost regulator for a complete ultra-low-power node.
おすすめ
Industrial Control and Automation
In factory-automation applications, the PIC18LF46K42-I/P provides 36 I/O pins for driving multiplexed sensor arrays, keypads, and relays while its 64 MHz CPU and vectored interrupts deliver deterministic response times for control loops. The Core Independent Peripherals (CIPs) - CLC, NCO, and PWM - implement complex timing, signal conditioning, and motor commutation in hardware, offloading the CPU. The on-chip DMA streams ADC data into RAM buffers for high-speed data logging on conveyor lines or process sensors. Integrated 12-bit ADCC supports accurate current and voltage sensing with hardware averaging and oversampling. Companion ICs include the MCP2515 CAN controller, the MCP23017 I/O expander, and the ADM3251E isolated RS-232/485 transceiver.
おすすめ
Home Appliance and Consumer Electronics
The PIC18LF46K42-I/P fits home-appliance designs such as washing machines, dishwashers, and HVAC controllers thanks to its 16-bit CCP/ECCP PWM with complementary outputs and dead-band control, which directly drives motor half-bridges. Its 64 KB Flash accommodates full state-machine control code, user-interface menus, and diagnostic logs without external memory. XLP sleep currents below 100 nA extend battery life in cordless appliances, while the 36 I/O count interfaces with keypads, displays, and buzzer/LED indicators. The 12-bit ADCC reads multiple temperature and pressure sensors simultaneously. Build a complete appliance control board by pairing the MCU with the IRFD024 power MOSFET, the ULN2003 driver array, and the AT24CM01 I2C EEPROM for parameter storage.
おすすめ
Motor Control and BLDC Drivers
The PIC18LF46K42-I/P excels at sensorless BLDC motor control through its high-resolution 16-bit PWM, complementary outputs with programmable dead-band, and on-chip DMA that streams ADC phase-current samples into RAM for the sensorless back-EMF algorithm. The 64 MHz CPU executes FOC or trapezoidal commutation loops within microseconds, while vectored interrupts guarantee deterministic timing of the PWM reload. The 36 I/O count provides dedicated pins for three-phase gate drivers, Hall sensors, and fault inputs. The 1.8 V to 3.6 V supply range simplifies low-voltage BLDC designs without auxiliary regulators. Companion parts include the IRS2003 gate driver, the MCP8024 3-phase BLDC gate-driver with power stage, and the ACS712 current sensor.
おすすめ
Energy Harvesting and Battery-Powered Systems
Energy-harvesting designs benefit from the PIC18LF46K42-I/P's nanoWatt XLP sleep currents and ability to wake from a single RTC tick or ADC threshold. The 1.8 V minimum VDD lets the MCU start directly from a single photovoltaic cell or thermoelectric generator, while the on-chip 64 MHz oscillator eliminates external crystals that would otherwise increase BOM and standby draw. DMA-driven ADCC enables periodic battery-voltage sampling without CPU wake-up. The 64 KB Flash supports wireless protocol stacks and over-the-air firmware updates for industrial IoT sensors. Pair the MCU with the BQ25504 energy-harvesting PMIC, the MCP1700 LDO, and the TI CC1101 sub-GHz transceiver for a self-powered wireless sensor.
おすすめ
Medical Instrumentation and Portable Devices
The PIC18LF46K42-I/P suits portable medical devices like glucose meters, pulse oximeters, and patient-worn telemetry patches. Its 12-bit ADCC with hardware averaging reads photoplethysmography (PPG) sensor outputs with high SNR, while XLP sleep modes extend coin-cell battery life to weeks. The DMA controller streams continuous ADC samples into RAM buffers for FFT or peak-detection algorithms without CPU load. Vectored interrupts and 64 MHz CPU let the device handle real-time signal processing while displaying results on an LCD or OLED. The 1.8 V minimum VDD supports operation from single lithium or alkaline cells. Build a portable pulse-oximeter board by pairing the MCU with the AFE4400 analog front-end, the SSD1306 OLED display, and the MCP73831 Li-ion charger.
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: PIC18LF46K42-I/P — 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 | PIC18LF46K40-I/P | PIC18LF46K22-I/P | PIC18LF46K40-E/P | PIC18LF45K42-I/P | PIC18LF46K42-E/P |
|---|---|---|---|---|---|---|
| Package | 40-pin PDIP | 40-pin PDIP (same) | 40-pin PDIP (same) | 40-pin PDIP (same) | 40-pin PDIP (same) | 40-pin PDIP (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB (-50%) | 64 KB |
| Data SRAM | 4 KB | 4 KB | 3.8 KB | 4 KB | 2 KB (-50%) | 4 KB |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| ADC | 12-bit ADCC with computation | 10-bit ADC | 10-bit ADC | 10-bit ADC | 12-bit ADCC with computation | 12-bit ADCC with computation |
| DMA Controller | Yes | No | No | No | Yes | Yes |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) |
主な差別化要因
- On-chip DMA controller for CPU-offloaded data movement （vs PIC18LF46K40-I/P)
- 12-bit ADCC with hardware averaging and threshold detection （vs PIC18LF46K22-I/P)
- 64 KB Flash with 4 KB SRAM for full-protocol stacks （vs PIC18LF45K42-I/P)
設計ノート
Estimated: at 64 MHz CPU and full 36-I/O load with active peripherals, core current consumption is approximately 12-15 mA at 3.3 V (per datasheet typical curves). For battery-powered designs, leverage XLP sleep modes with the RTC and ADC-threshold wake-up sources to drop current below 1 uA between measurement intervals. Place a 100 nF decoupling capacitor on each VDD/VDDCORE pin pair as close to the package as possible, and add a 10 uF bulk capacitor near the IC.
Reserve a 5-pin header (ICSPCLK, ICSPDAT, VDD, VSS, MCLR) on every PIC18LF46K42-I/P board for in-circuit serial programming and debugging. Route ICSPCLK/ICSPDAT traces away from switching signals and keep them short to avoid coupling noise into the programming interface. Use the ICSP ICPGCK/ICPGDT pins (shared with RB6/RB7) for the standard Microchip debugger connection.
Do not exceed 3.6 V on VDD - the LF variant is a low-voltage part and will suffer permanent damage above this threshold. Ensure MCLR is properly pulled up through a 10 kohm resistor and that the ICSP programmer can drive the MCLR line for programming. Verify configuration bits (FOSC, WDT, BOR) are set correctly in code; default unprogrammed configuration can leave peripherals in unexpected states and lock debug access.
Estimated: in a 40-pin PDIP package at ambient 25 C with full 64 MHz operation and active peripherals, junction temperature rise is approximately 12-15 C (per typical theta_JA of 50 C/W for PDIP). For designs operating near the upper temperature limit (+85 C industrial, +125 C extended), add copper pours around the package and avoid enclosing the part in thermally insulated housings. For high-current or high-duty PWM outputs, ensure the I/O pin maximum sink/source currents (per pin and per port) are not exceeded.
コンプライアンス情報
RoHS compliance confirmed by Microchip product family specifications; AEC-Q100 qualification not applicable for industrial-grade part (operating temp -40C to +85C).
