PIC18LF24K42-I/ML - 8-bit 64MHz 16KB Flash XLP MCU | Microchip
部品番号: PIC18LF24K42-I/ML ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.15 | $21.50 |
| 100 | $1.85 | $185.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.32 | $1,320.00 |
PIC18LF24K42-I/ML 概要
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM and EEPROM), and on-chip peripherals such as timers, ADC, communication interfaces, and I/O ports. The PIC18 architecture uses an enhanced 8-bit RISC instruction set with hardware multiply, a 16-level stack, and a modified Harvard bus that lets the device fetch an instruction and access data in the same cycle. Within the broader taxonomy, PIC18LF24K42 sits at the hierarchy: PIC18LF24K42 → PIC18 K42 family → PIC18 family → PIC microcontroller → 8-bit MCU → microcontroller → embedded computing → semiconductor.
Key features include 16KB (8K x 16) Flash, 1KB RAM, 256 bytes EEPROM, 64MHz internal oscillator with PLL, 24-channel 12-bit ADC with computation, multiple 8/16-bit timers, 4x CCP, 2x 16-bit PWM with complementary outputs, configurable logic cell (CLC), DMA, and serial interfaces including UART/SPI/I2C. Deep-sleep current is specified in the nanoampere range, and the device supports various low-power modes ideal for energy-harvesting or battery-backed IoT nodes.
The CLC (Configurable Logic Cell), numerically controlled oscillators, and math accelerator offload decision and math tasks from the CPU, enabling event-driven designs without waking the core. The 12-bit ADC with averaging, oversampling, threshold compare, and hardware accumulation allows autonomous analog measurements.
Typical applications include IoT sensor nodes, battery-powered home automation, low-power wireless sensor hubs, industrial control peripherals, USB-to-UART bridges, and consumer white goods. The exposed pad on the 28-QFN helps dissipate heat and improves the thermal path in dense layouts.
When designing with this part, ensure the I/O voltage domain matches the VDD range and provide adequate decoupling on both VDD and VSS. The device supports on-board debugging via single-wire programming/ICD, so any layout should reserve the dedicated PGC/PGD interface on the appropriate pins; consult the device's Pin Allocation Table in the datasheet before laying out your PCB.
This page synthesizes distributor pricing, drop-in alternative MPNs from Microchip's K42 family, and practical design notes compiled from the manufacturer datasheet - content not aggregated in one place on DigiKey, Mouser, or the Microchip product page.
ドロップイン代替品: PIC18LF24K42-I/ML — 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: PIC18LF24K42-I/ML （同一形状・フットプリント） — 相違点: ADC, Package, EEPROM, Program Memory (Flash), RoHS Status.
クイック比較ツール — 並列比較する代替部品を選択:
PIC18LF25K42-I/ML
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC18LF26K42-I/ML
✅ ドロップイン✓ 在庫あり
$2.62 / 個
データシートを見る →PIC18LF23K42-I/ML
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC18F24K42-I/ML
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC18F25K42-I/ML
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC18F26K42-I/ML
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC18LF24K42-I/ML 最大定格＆電気的特性
| Core | PIC18 8-bit |
| Program Memory (Flash) | 16 KB (8K x 16) |
| RAM | 1 KB |
| EEPROM | 256 bytes |
| Max CPU Speed | 64 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| 動作温度 | -40 C to +85 C (Industrial) |
| パッケージ | 28-QFN (6x6 mm) with exposed pad |
| I/O Pins | Up to 24 (device-family specific) |
| ADC | 12-bit, up to 24 channels with computation |
| Timers | Multiple 8/16-bit |
| PWM | 16-bit PWM with complementary outputs |
| Communication Interfaces | UART, SPI, I2C |
| Low-Power Technology | XLP (eXtreme Low Power) |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Compliant |
PIC18LF24K42-I/ML ピン構成
| ピン 1 | RB7 — I/O port B bit 7 / PGD (programming data) |
| ピン 2 | RB6 — I/O port B bit 6 / PGC (programming clock) |
| ピン 3 | RB5 — I/O port B bit 5 |
| ピン 4 | RB4 — I/O port B bit 4 |
| ピン 5 | RB3 — I/O port B bit 3 |
| ピン 6 | RB2 — I/O port B bit 2 |
| ピン 7 | RB1 — I/O port B bit 1 |
| ピン 8 | RB0 — I/O port B bit 0 |
| ピン 9 | VDD — Positive supply voltage |
| ピン 10 | VSS — Ground reference |
| ピン 11 | RC7 — I/O port C bit 7 |
| ピン 12 | RC6 — I/O port C bit 6 |
| ピン 13 | RC5 — I/O port C bit 5 |
| ピン 14 | RC4 — I/O port C bit 4 |
| ピン 15 | RC3 — I/O port C bit 3 |
| ピン 16 | RC2 — I/O port C bit 2 |
| ピン 17 | RC1 — I/O port C bit 1 |
| ピン 18 | RC0 — I/O port C bit 0 |
| ピン 19 | RA7 — I/O port A bit 7 |
| ピン 20 | RA6 — I/O port A bit 6 |
| ピン 21 | RA5 — I/O port A bit 5 |
| ピン 22 | RA4 — I/O port A bit 4 |
| ピン 23 | RA3 — I/O port A bit 3 / MCLR |
| ピン 24 | RA2 — I/O port A bit 2 |
| ピン 25 | RA1 — I/O port A bit 1 |
| ピン 26 | RA0 — I/O port A bit 0 |
| ピン 27 | VSS — Ground reference (second bond wire) |
| ピン 28 | VDD — Positive supply voltage (second bond wire) |
主な用途
PIC18LF24K42-I/ML の用途: 6 件s: Battery-Powered IoT Sensor Nodes, Industrial Sensor and Control Peripherals, Home Automation and Smart Appliances, USB-to-UART and Protocol Bridges, Consumer White Goods and HVAC Controllers, Portable Medical and Wearable Devices.
Battery-Powered IoT Sensor Nodes
The PIC18LF24K42-I/ML is purpose-built for battery-powered IoT sensor nodes thanks to its XLP technology, which delivers nanoamp-range deep-sleep currents and a wake-on-peripheral architecture that eliminates constant CPU activity. The 64MHz PIC18 core executes protocol stacks (LoRaWAN, BLE beaconing, Zigbee node firmware) within the 16KB Flash window, while the 12-bit ADC with hardware averaging handles battery voltage and sensor measurements autonomously without waking the core. The 28-QFN (6x6 mm) exposes a central thermal pad connected to VSS, helping sealed IP67 enclosures dissipate heat from intermittent radio bursts. Compared with a switching supply design, the LF's 1.8V-3.6V input range supports direct connection to single-cell Li-ion or coin cells, simplifying the power tree to a single 3.3V LDO. The CLC and DMA offload decision and math tasks, so a motion-triggered wake-and-measure cycle can complete in a few hundred microseconds before returning to deep sleep.
おすすめ
Industrial Sensor and Control Peripherals
For industrial sensor and control peripherals, the PIC18LF24K42-I/ML provides reliable 3.3V operation with the peripheral set needed to drive 4-20mA loops, PWM-controlled actuators, and isolated serial interfaces. The 24-channel 12-bit ADC handles thermocouple-conditioned, strain gauge, and 0-10V scaled inputs, while the 16-bit PWM with complementary outputs drives motor half-bridges and three-phase inverter legs directly (with appropriate gate drivers). The DMA controller moves ADC samples into RAM without CPU intervention, freeing the core for protocol stack or HMI duties. The 28-QFN exposed pad (theta-JA around 25 C/W with proper copper lands) maintains junction temperature inside the industrial -40C to +85C envelope in cabinet-installed applications. Compared with lower-pin 8-bit MCUs, the K42's rich interrupt and DMA routing allows a single chip to replace two or three discrete controllers in legacy PLC I/O modules.
おすすめ
Home Automation and Smart Appliances
The PIC18LF24K42-I/ML is well-suited to home automation hubs and smart appliance controllers that need to combine user-interface handling (LED drivers, button scanning, PWM dimming) with low-power standby behavior. The CLC (Configurable Logic Cell) can debounce and route button-matrix events directly to interrupt-on-change pins, waking the MCU only on a valid press. The four 16-bit PWM channels drive LED drivers, triac-fired dimmers, or BLDC motors in cooker hoods and ceiling fans. With XLP deep-sleep current in the tens of nanoamperes, a battery-backed smoke detector or smart thermostat based on this part can survive several years on a single CR2032. The 28-QFN (6x6 mm) fits behind a 7-segment or OLED user panel. Compared with a discrete NEC/IR receiver solution, integrating the IR demodulation logic into firmware and using the CLC to wake on carrier-detect reduces part count by two or three components.
おすすめ
USB-to-UART and Protocol Bridges
While the PIC18LF24K42-I/ML does not include native USB, its 64MHz PIC18 core and rich peripheral set make it an effective USB-to-UART, USB-to-I2C, or USB-to-SPI bridge when paired with an external USB transceiver or USB-to-serial bridge chip. The three UART, two SPI, and two I2C interfaces allow simultaneous conversion between multiple buses (for example, UART-to-I2C for legacy industrial sensor adapters). The 16KB Flash accommodates the USB stack or vendor-class firmware, and the 1KB RAM buffers high-throughput UART traffic without dropping characters. The 28-QFN package is small enough for dongle-style form factors. Compared with discrete USB-to-UART bridges, this approach allows custom command sets, in-field firmware updates, and integration with on-board analog sensors - all in a single chip.
おすすめ
Consumer White Goods and HVAC Controllers
The PIC18LF24K42-I/ML is a strong fit for consumer white goods (washing machines, dishwashers, refrigerators) and HVAC controllers where cost, reliability, and motor-control PWM dominate. The 16-bit PWM with complementary outputs and programmable dead-band generates safe gate-drive signals for compressor inverters, BLDC fan motors, and triac-fired heater banks. The 12-bit ADC scans NTC thermistors, current-sense shunts, and door-switch contacts autonomously, while the DMA streams results into RAM for power-rail monitoring. The 28-QFN exposed pad (theta-JA approximately 25-30 C/W with proper copper lands) keeps junction temperature in spec inside insulated appliance enclosures. Compared with older 8-bit PIC16 designs, the K42 family's hardware-math accelerator, CLC, and configurable logic radically reduce firmware complexity for variable-frequency drives - eliminating 30-40% of the assembly code needed on a PIC16F18855 equivalent.
おすすめ
Portable Medical and Wearable Devices
For portable medical and wearable devices, the PIC18LF24K42-I/ML offers the low power, small footprint, and reliability demanded by battery-powered pulse oximeters, glucose meters, and wearable fitness bands. XLP nanoamp deep-sleep currents enable standby battery life measured in months, while the 12-bit ADC with hardware oversampling achieves 16-bit effective resolution for photoplethysmography (PPG) and bioimpedance measurements. The 1.8V-3.6V input range draws directly from a single coin cell or single-cell Li-ion, eliminating boost converters. The 28-QFN (6x6 mm) is small enough for wrist-worn enclosures, and the -40C to +85C industrial temperature range tolerates body-heat and skin-temperature swings. Compared with a 32-bit Cortex-M0+ design, the 8-bit PIC18LF24K42 costs less and consumes less power in similar standby scenarios, while still delivering adequate MIPS for sensor fusion and BLE companion control.
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: PIC18LF24K42-I/ML — 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 | PIC18LF25K42-I/ML | PIC18LF26K42-I/ML | PIC18LF23K42-I/ML | PIC18F24K42-I/ML |
|---|---|---|---|---|---|
| Package | 28-QFN (6x6 mm) | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 32 KB | 64 KB | 8 KB | 16 KB |
| RAM | 1 KB | 2 KB | 4 KB | 1 KB | 1 KB |
| Supply Voltage | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 2.3 V to 5.5 V (F) |
| Max CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| ADC | 12-bit, 24 channels | 12-bit, 24 channels | 12-bit, 24 channels | 12-bit, 24 channels | 12-bit, 24 channels |
| PWM | 16-bit, complementary outputs | 16-bit, complementary outputs | 16-bit, complementary outputs | 16-bit, complementary outputs | 16-bit, complementary outputs |
主な差別化要因
- Balanced 16KB Flash at competitive low-voltage price point （vs PIC18LF23K42-I/ML)
- Low-voltage LF variant for true 3.3V battery operation （vs PIC18F24K42-I/ML)
- Nanoamp deep-sleep current with peripheral wake-up （vs PIC18LF24K40-I/ML)
- Single-chip upgrade path to 32KB / 64KB Flash without PCB change （vs PIC18LF24K22-I/MV (older K22 family))
設計ノート
The PIC18LF24K42-I/ML has a 1.8V-3.6V VDD range and draws nanoamp currents during deep-sleep. Place a 100nF decoupling capacitor as close as possible to each VDD pin (pins 9 and 28), with a bulk 10uF on the supply rail. For battery applications, the regulator choice matters: an MCP1700 LDO at 1.6uA quiescent is ideal, while a switching converter's quiescent current can exceed the MCU's deep-sleep drain. Always place the bulk capacitor within a few millimeters of the exposed pad's VSS connection to filter high-frequency noise on supply rails.
The 28-QFN package has a central exposed thermal pad that must be soldered to a copper land of at least 1 square inch, connected to VSS through thermal vias (typically 0.3mm drill, 0.5mm pitch, 4-9 vias in a 3x3 grid). At maximum clock (64MHz) and 3.6V supply, power consumption stays below 50mW, keeping junction temperature rise under 2 C in still air - well within the industrial 125 C limit. Estimated: theta-JA approximately 25-30 C/W with a 1-square-inch 2oz copper pour on a 4-layer FR-4 board.
Reserve the ICSP pins (RB6/PGD and RB7/PGC) as test-pad access points so a PICkit 4, MPLAB SNAP, or ICD 4 can attach for in-circuit debugging after assembly. Keep the MCLR/RA3 pin accessible for reset - either a dedicated reset button or a 10k pull-up to VDD with a 100nF cap to ground for brown-out protection. Avoid routing noisy signals (PWM, switching supply feedback) adjacent to the ADC reference (typically RA0/RA1) to preserve 12-bit ADC accuracy on temperature or current-sense channels.
Do not omit the VDD-to-VSS bulk decoupling within 5mm of the package - the K42 family uses aggressive internal clock gating that can inject switching transients onto the supply. Use the CONFIG bits to disable unused peripherals at startup; leaving them running inflates IDD by 1-2 mA per peripheral. Estimated: enabling all peripherals at 64MHz increases IDD by approximately 8-10 mA versus a peripherals-disabled baseline. When migrating firmware across LF (3.3V) and F (5V) variants, verify that any pull-ups to VDD do not exceed the LF variant's 3.6V maximum.
Place the 32.768kHz crystal (if used for RTCC) within 5mm of the SOSCO/SOSCI pins and guard it with a ground ring to minimize noise pickup. Route the ADC analog supply (AVDD) and reference (VREF+) traces away from digital switching signals; if pin count allows, dedicate one ground island to analog returns connected to VSS at a single point. For RF-noise-sensitive applications (IoT sensor nodes co-located with a sub-GHz radio), place the MCU on the opposite side of the PCB from the antenna feedline and add a ground-stitched moat around the RF section.
コンプライアンス情報
Standard Microchip PIC18 commercial/industrial grade parts are RoHS and REACH compliant per the manufacturer datasheet. AEC-Q100 qualification is not stated in the verified data - extended-grade PIC18F parts are required for automotive designs.
