PIC18LF24K42T-I/ML - 8-bit 64MHz XLP MCU 16KB Flash QFN-28
부품 번호: PIC18LF24K42T-I/ML ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.21 | $22.10 |
| 100 | $1.94 | $194.00 |
| 500 | $1.72 | $860.00 |
| 1,000 | $1.55 | $1,550.00 |
PIC18LF24K42T-I/ML 개요
A microcontroller (MCU) is a single-chip computer integrating a CPU, non-volatile program memory, working RAM, and a configurable set of peripherals such as ADCs, timers, PWM modules and communication interfaces. The PIC18LF24K42 specifically belongs to the 8-bit PIC18 XLP family - a tier designed for battery-powered applications where nanoWatt eXtreme Low-Power technology (XLP), deep sleep currents in the nanoampere range, and integrated Core Independent Peripherals (CIPs) allow the device to remain responsive while consuming minimal energy.
Key features include an integrated 12-bit ADC with Computation (ADC2), a 5-bit/8-bit DAC, two comparators, an 8-bit configurable timer, multiple PWM/Capture/Compare modules, a DMA controller, Vectored Interrupts, a Device Information Area (DIA) and a Memory Access Partition (MAP), plus CIPs such as the CWG, NCO, and configurable logic cells. The 28-QFN footprint exposes multiple ADC channels, UART/SPI/I2C peripherals, and a wide operating voltage from 1.8 V to 3.6 V typical for the LF variant, with XLP sleep currents below 100 nA in Retention mode.
Typical applications include ultra-low-power IoT sensor nodes, consumer wearables, battery-powered medical monitors, touch and proximity user interfaces, and industrial sensor hubs that benefit from the integrated 12-bit ADC2 plus DMA, allowing the CPU to stay asleep while data is captured and transferred autonomously.
When designing with this device, route the exposed pad (EP) of the QFN-28 to a properly sized ground copper pour to minimize thermal resistance and provide a low-impedance ground reference; confirm the LF voltage range (1.8-3.6 V) matches your battery chemistry, and use the MAP/DIA regions to lock the configuration words against unintended reprogramming.
This page synthesizes verified distributor pricing, parametric drop-in alternatives sourced from Microchip's PIC18 family datasheet, and practical low-power design notes not aggregated elsewhere on the open web.
드롭인 대체품: PIC18LF24K42T-I/ML — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC18LF24K42T-I/ML (동일 폼 팩터 및 풋프린트) — 차이점: Package, ADC, Core Architecture, RoHS Status, DAC.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC18LF24K40T-I/ML
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC18LF25K42T-I/ML
✅ 드롭인✓ 재고 있음
$1.18 / 개
데이터시트 보기 →PIC18F24K42T-I/ML
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC18F25K42T-I/ML
✅ 드롭인✓ 재고 있음
$1.68 / 개
데이터시트 보기 →PIC18LF24K42-I/ML
✅ 드롭인✓ 재고 있음
$1.32 / 개
데이터시트 보기 →PIC18LF24K42-I/MV
✅ 드롭인✓ 재고 있음
$1.18 / 개
데이터시트 보기 →PIC18LF24K42T-I/ML 최대 정격 & 전기적 특성
| Core Architecture | PIC18 8-bit RISC enhanced Harvard |
| CPU Core | PIC18 (PIC18F K42 family) |
| Maximum CPU Frequency | 64 MHz |
| Program Flash Memory | 16 KB (8K x 16) |
| Data SRAM | 1 KB |
| Data EEPROM | 256 B |
| 패키지 | 28-QFN (6x6 mm) with exposed pad (ML) |
| Operating Voltage Range | 1.8 V to 3.6 V (LF family) |
| ADC | 12-bit ADC with Computation (ADC2) |
| DAC | 5-bit / 8-bit DAC |
| Comparators | 2 |
| PWM Modules | Multiple CCP/ECP PWM channels |
| DMA Controller | Yes (Direct Memory Access) |
| Communication Interfaces | UART, SPI, I2C |
| Low-Power Mode | nanoWatt XLP (deep sleep <100 nA retention) |
| 동작 온도 범위 | -40C to +85C (Industrial, I grade) |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant (per distributor listing) |
| Shipping Packaging | Tape & Reel (T suffix) |
PIC18LF24K42T-I/ML 핀 구성
| 핀 1 | RA0 — PORTA0 / analog input |
| 핀 2 | RA1 — PORTA1 / analog input |
| 핀 3 | RA2 — PORTA2 / analog input |
| 핀 4 | RA3 — PORTA3 / analog input |
| 핀 5 | RA4 — PORTA4 / analog input |
| 핀 6 | RA5 — PORTA5 / analog input |
| 핀 7 | RA6 — PORTA6 / analog input |
| 핀 8 | RA7 — PORTA7 / analog input |
| 핀 9 | VSS — Ground |
| 핀 10 | RB0 — PORTB0 |
| 핀 11 | RB1 — PORTB1 |
| 핀 12 | RB2 — PORTB2 |
| 핀 13 | RB3 — PORTB3 |
| 핀 14 | RB4 — PORTB4 |
| 핀 15 | RB5 — PORTB5 |
| 핀 16 | RB6 — PORTB6 / ICSPCLK |
| 핀 17 | RB7 — PORTB7 / ICSPDAT |
| 핀 18 | VSS — Ground (additional pad) |
| 핀 19 | VDD — Positive supply |
| 핀 20 | RC0 — PORTC0 |
| 핀 21 | RC1 — PORTC1 |
| 핀 22 | RC2 — PORTC2 |
| 핀 23 | RC3 — PORTC3 |
| 핀 24 | RC4 — PORTC4 |
| 핀 25 | RC5 — PORTC5 |
| 핀 26 | RC6 — PORTC6 |
| 핀 27 | RC7 — PORTC7 |
| 핀 28 | VDD — Positive supply (additional pad) |
일반적인 애플리케이션
PIC18LF24K42T-I/ML 적합 용도: 6 애플리케이션s: Battery-Powered IoT Sensor Nodes, Consumer Wearable Devices, Touch and Proximity User Interfaces, Industrial Sensor Hubs, Portable Medical Monitoring Devices, Home and Building Automation Nodes.
Battery-Powered IoT Sensor Nodes
The PIC18LF24K42T-I/ML fits battery-powered IoT sensor nodes because its nanoWatt XLP deep sleep current below 100 nA and the integrated 12-bit ADC2 with DMA let the CPU stay asleep while sensor data is autonomously captured and threshold-checked. The 1.8-3.6 V operating range directly supports CR2032 coin-cell or single Li-Ion chemistries, while the 28-QFN footprint occupies only 36 mm^2 of PCB area, leaving room for compact wireless modules. The vectored interrupt controller and DMA channels minimize active-mode time, enabling multi-year battery life on periodic environmental monitoring.
추천
Consumer Wearable Devices
The PIC18LF24K42T-I/ML is suitable for consumer wearables including smart bands, fitness trackers and BLE-paired health accessories. Its 64 MHz core executes sensor fusion algorithms fast enough to keep active-mode duty cycles short, while the XLP sleep modes allow continuous wear without frequent charging. The integrated 12-bit ADC2 and 2 comparators can directly interface with photodiode and bio-impedance front-ends, and the DMA offloads sample buffering from the CPU, reducing firmware complexity in tight power budgets.
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Touch and Proximity User Interfaces
The PIC18LF24K42T-I/ML enables capacitive touch and IR-proximity user interfaces via its 12-bit ADC2 with Computation and mTouch peripheral support. The on-chip DMA streams ADC samples into RAM without CPU involvement, allowing capacitive scan rates above 100 Hz with minimal firmware overhead. The wide operating voltage (1.8-3.6 V) lets designers run directly from 2 AAs or a Li-Ion cell, and the 28-QFN package keeps the BOM compact behind glass or plastic overlays. The vectored interrupt controller prioritizes touch events to keep user-perceived latency below 30 ms.
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Industrial Sensor Hubs
The PIC18LF24K42T-I/ML suits industrial sensor hubs that aggregate analog and digital sensor data and forward it over UART/SPI/I2C to a host controller or PLC. Its -40C to +85C industrial temperature range and integrated voltage reference enable stable operation in factory environments, while the 12-bit ADC2 with averaging supports accurate measurements from RTDs, strain gauges and 4-20 mA loops. The DMA controller can concurrently drive SPI transfers and ADC sampling, keeping the 64 MHz CPU free for protocol conversion.
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Portable Medical Monitoring Devices
The PIC18LF24K42T-I/ML is a fit for portable medical monitors such as pulse oximeters, single-lead ECG patches and connected thermometers. Its ADC2 with hardware accumulation and averaging captures low-amplitude bioelectric signals while rejecting 50/60 Hz mains noise, and the XLP retention mode preserves measurement state across battery swaps. The 28-QFN (6x6 mm) footprint is small enough to fit a wrist-worn form factor, and the wide supply range supports USB-powered as well as coin-cell-powered operation.
추천
Home and Building Automation Nodes
The PIC18LF24K42T-I/ML supports home and building automation endpoints such as battery-powered window/door sensors, smart thermostats and occupancy detectors. The CWG (Complementary Waveform Generator) and PWM modules drive LED indicators and small piezo buzzers, while the integrated 12-bit ADC reads thermistor and photodiode sensors directly. The 1.8-3.6 V range matches 2 AAs or a CR2477 coin cell, and the deep sleep current below 100 nA extends service intervals to multi-year periods typical for security sensors.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC18LF24K42T-I/ML — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC18LF24K40T-I/ML | PIC18LF25K42T-I/ML | PIC18F24K42T-I/ML | PIC18F25K42T-I/ML |
|---|---|---|---|---|---|
| Package | 28-QFN (6x6 mm) ML | 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 |
| Program Flash | 16 KB | 16 KB | 32 KB | 16 KB | 32 KB |
| Data SRAM | 1 KB | 1 KB | 2 KB | 1 KB | 2 KB |
| 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 5.5 V | 1.8 V to 5.5 V |
| Max CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| ADC | 12-bit ADC2 with Computation | 10/12-bit ADC (K40 generation, no ADC2 features) | 12-bit ADC2 with Computation | 12-bit ADC2 with Computation | 12-bit ADC2 with Computation |
| DMA Controller | Yes | Yes (K40 DMA peripheral) | Yes | Yes | Yes |
주요 차별점
- Wide LF voltage range for direct 3 V battery operation (vs PIC18LF24K22T-I/ML (older K22 generation))
- Drop-in upgrade path to 32 KB Flash on identical footprint (vs PIC18LF24K42T-I/ML)
- 5 V-tolerant F variant on same footprint for industrial buses (vs PIC18LF24K42T-I/ML)
설계 노트
Solder the exposed thermal pad (EP) of the 28-QFN package to a continuous ground copper pour on the top and inner PCB layers with at least 8 thermal vias under the pad. The EP is the primary heat-dissipation path - without proper soldering, junction temperature can rise 15-20 C above ambient at 64 MHz full-load, derating the XLP sleep current budget. Use a minimum 1 oz copper weight to ensure adequate thermal spreading.
Place a 100 nF decoupling capacitor as close as possible to each VDD pin (pins 19 and 28 on the 28-QFN) plus a single 10 uF bulk capacitor on the main supply rail. The PIC18 K42 family wakes in microseconds from deep sleep, and a starved VDD during the in-rush transient can cause brown-out resets. For coin-cell designs, add a 100 ohm ferrite bead on the battery rail to limit inrush.
Do not exceed 3.6 V on any VDD pin of the LF variant - the LF prefix does NOT include 5 V tolerance. For designs that interface to 5 V sensors or hosts, choose the PIC18F24K42 (F variant) instead. Confusing LF and F variants is a leading cause of in-field MCU failures during hardware bring-up.
Route the ICSP (In-Circuit Serial Programming) lines RB6/ICSPDAT and RB7/ICSPCLK to a dedicated debug header with no series resistors on production boards. Adding series resistors interferes with edge-detect debugger probing. For field-upgradable firmware, expose the ICSP header through a 1x6 0.1 inch pin header on the board edge.
규정 준수 정보
RoHS compliance per Microchip product page. AEC-Q100 not applicable for non-automotive MCU. REACH and halogen-free status not explicitly stated in verified web data.
