PIC18LF24K42T-I/SO - 8-Bit XLP MCU, 16KB Flash, 64MHz | Microchip
料号： PIC18LF24K42T-I/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.66 | $26.60 |
| 100 | $2.36 | $236.00 |
| 500 | $2.12 | $1,060.00 |
| 1,000 | $1.89 | $1,890.00 |
PIC18LF24K42T-I/SO 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), non-volatile data memory (EEPROM), and a rich set of peripherals including timers, ADC, communication interfaces, and I/O. Within the broader semiconductor taxonomy, an MCU belongs to the embedded processing > microcontroller > 8-bit MCU hierarchy and is the central computing element in virtually every battery-powered or fixed-function electronic device. The 'LF' (Low-power / Low-voltage F) series specifically targets energy-constrained and portable designs where extended battery life is essential.
Key differentiating features of the PIC18LF24K42 include Core Independent Peripherals (CIPs) such as Configurable Logic Cells (CLC), Complementary Waveform Generator (CWG), Numerically Controlled Oscillator (NCO), and Zero-Cross Detect (ZCD). These hardware blocks execute functions without CPU intervention, freeing the core for application code and reducing active-mode current. A 12-bit differential ADC with computation, a 10-bit DAC, and a Direct Memory Access (DMA) controller further reduce software overhead and enable deterministic peripheral behavior for real-time control loops.
Typical applications include low-power IoT sensor nodes, battery-powered medical monitors, automotive body and interior modules, consumer appliances with capacitive touch sensing, and industrial sensor transmitters. The combination of XLP nanoWatt XLP technology, fast wake-up from sleep, and high-resolution analog peripherals also makes it well-suited for remote controls, wearables, and energy-harvesting systems where standby current in the order of hundreds of nA is critical.
直接替换替代料： PIC18LF24K42T-I/SO ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18LF24K42T-I/SO （相同外形与封装尺寸） ——差异在于 Package, ADC, Operating Temperature, Operating Voltage Range, Timers.
快速对比工具——选择替代料号进行并排对比：
PIC18F24K42T-I/SO
✅ 直接替换📋 参考替代料（不在目录中）
PIC18LF24K42-I/SO
✅ 直接替换✓ 有现货
$0.96 / 个
查看数据手册 →PIC18LF24K40T-I/SO
✅ 直接替换✓ 有现货
$1.86 / 个
查看数据手册 →PIC18LF24K22-I/SO
✅ 直接替换✓ 有现货
$1.75 / 个
查看数据手册 →PIC18LF24J10T-I/SO
✅ 直接替换✓ 有现货
$2.05 / 个
查看数据手册 →PIC18LF24K42T-I/SO 最大额定值与电气特性
| Product Series | PIC® XLP™ 18K (PIC18F K42 Family) |
| Core Architecture | PIC18 8-bit RISC |
| CPU Bit Width | 8-bit |
| Maximum CPU Frequency | 64 MHz |
| Program Memory (Flash) | 16 KB (8K x 16 words) |
| Data SRAM | 1 KB |
| Data EEPROM | 256 bytes |
| I/O Pins | 25 |
| Operating Voltage Range | 1.8 V to 3.6 V (LF series) |
| 工作温度范围 | -40 °C to +85 °C (Industrial, 'I' suffix) |
| ADC | 12-bit differential with computation |
| DAC | 10-bit |
| DMA Channels | Yes (peripheral-to-memory, no CPU) |
| Core Independent Peripherals | CLC, CWG, NCO, ZCD, SCCP |
| 封装 | 28-pin SOIC (7.50 mm / 300 mil wide-body) |
| 安装类型 | Surface Mount |
| Packaging Form | Tape and Reel ('T' suffix) |
| RoHS 状态 | Compliant |
| MSL (Moisture Sensitivity Level) | 3 |
PIC18LF24K42T-I/SO 引脚配置
| 引脚 1 | MCLR — Master Clear (Reset) input, active-low |
| 引脚 2 | RA0 — PORTA bit 0 / analog input |
| 引脚 3 | RA1 — PORTA bit 1 / analog input |
| 引脚 4 | RA2 — PORTA bit 2 / analog input |
| 引脚 5 | RA3 — PORTA bit 3 / analog input |
| 引脚 6 | RA4 — PORTA bit 4 / analog input |
| 引脚 7 | RA5 — PORTA bit 5 / analog input |
| 引脚 8 | RA6 — PORTA bit 6 / analog input |
| 引脚 9 | RA7 — PORTA bit 7 / analog input |
| 引脚 10 | VSS — Ground reference |
| 引脚 11 | RC0 — PORTC bit 0 / analog input |
| 引脚 12 | RC1 — PORTC bit 1 / analog input |
| 引脚 13 | RC2 — PORTC bit 2 / analog input |
| 引脚 14 | RC3 — PORTC bit 3 / analog input |
| 引脚 15 | RC4 — PORTC bit 4 |
| 引脚 16 | RC5 — PORTC bit 5 |
| 引脚 17 | RC6 — PORTC bit 6 / TX |
| 引脚 18 | RC7 — PORTC bit 7 / RX |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | RB0 — PORTB bit 0 / analog input |
| 引脚 21 | RB1 — PORTB bit 1 / analog input |
| 引脚 22 | RB2 — PORTB bit 2 / analog input |
| 引脚 23 | RB3 — PORTB bit 3 / analog input |
| 引脚 24 | RB4 — PORTB bit 4 |
| 引脚 25 | RB5 — PORTB bit 5 |
| 引脚 26 | RB6 — PORTB bit 6 / ICS PGC |
| 引脚 27 | RB7 — PORTB bit 7 / ICS PGD |
| 引脚 28 | VDD — Positive supply (1.8 V to 3.6 V) |
典型应用
PIC18LF24K42T-I/SO 适用于 6 应用s: Battery-Powered IoT Sensor Node, Capacitive Touch User Interface, Automotive Body and Interior Module, Industrial Sensor Transmitter (4-20 mA / WirelessHART), Consumer Appliance with Brushless DC Motor, Wearable Health Monitor.
Battery-Powered IoT Sensor Node
The PIC18LF24K42T-I/SO is a strong fit for battery-powered IoT sensor nodes thanks to its nanoWatt XLP sleep currents in the order of hundreds of nA, 1.8 V minimum VDD, and Core Independent Peripherals that let the MCU stay in deep sleep while CIPs (CLC, NCO, CWG) sample sensors autonomously. The 12-bit differential ADC with computation handles bridge and thermocouple-grade sensor channels, while the on-chip DMA moves ADC samples to RAM without waking the core - keeping active-mode duty cycle well below 1%. With 16 KB Flash and 1 KB SRAM it can host a small LoRaWAN, BLE-SoC UART-bridge, or sub-GHz protocol stack plus application logic, all from a single Li-ion or 2x AA cell that spans 1.8 V to 3.6 V across its discharge curve.
推荐
Capacitive Touch User Interface
The PIC18LF24K42T-I/SO drives robust capacitive-touch UI panels through its mTouch peripheral block and Charge Time Measurement Unit (CTMU). The 12-bit ADC with computation digitizes capacitive channels directly, while Core Independent Peripherals (CLC) implement noise-tolerant filtering without CPU load, eliminating software polling jitter. The 64 MHz core keeps touch-scan response under 10 ms even with 25 I/O pins serving both touch electrodes and LED/PWM backlight drivers. Designers can implement 8-16 button panels or a small slider/wheel, with the LF voltage range supporting USB-C PD or single-cell Li-ion powered appliances seamlessly.
推荐
Automotive Body and Interior Module
The PIC18LF24K42T-I/SO suits automotive body and interior modules - seat controllers, mirror adjusters, ambient lighting, HVAC flaps, and similar 12 V node electronics - when paired with a voltage regulator. Its -40 °C to +85 °C industrial range covers cabin environments, while the 64 MHz core and DMA enable responsive LIN/SBC communication alongside PWM-driven loads. The 12-bit ADC and CWG peripherals simplify closed-loop current sensing for LED drivers and motor control, while 256 bytes of EEPROM store trim and calibration data across the vehicle's life. Note that for under-hood AEC-Q100 applications, the PIC18F24K42 E/SSO AEC-Q100 grade should be selected instead.
推荐
Industrial Sensor Transmitter (4-20 mA / WirelessHART)
The PIC18LF24K42T-I/SO is well matched to 4-20 mA loop-powered or wireless industrial sensor transmitters. Its 1.8 V minimum VDD lets it operate from a low-drop linear regulator fed by the 24 V loop, while the 12-bit differential ADC with computation delivers ratiometric measurements directly from bridge, RTD, or thermocouple front-ends. Core Independent Peripherals (CLC + SCCP) handle HART or IO-Link protocol bit timing in hardware without CPU intervention, freeing the core for sensor linearization and diagnostics. With 1 KB SRAM and 16 KB Flash, the device can host MODBUS, IO-Link, or proprietary protocols in a compact SOIC-28 footprint.
推荐
Consumer Appliance with Brushless DC Motor
The PIC18LF24K42T-I/SO can drive small brushless DC (BLDC) or brushed DC motors in consumer appliances - fans, pumps, mixers, personal-care devices - thanks to its Complementary Waveform Generator (CWG) and 10-bit DAC for analog-friendly motor control. The DMA controller moves ADC samples for back-EMF zero-cross detection without CPU load, enabling sensorless trapezoidal commutation. The 64 MHz core can run a small FOC (field-oriented control) loop for low-power BLDCs while the peripheral PWM channels drive the three-phase inverter directly, keeping BOM small and PCB compact in SOIC-28.
推荐
Wearable Health Monitor
The PIC18LF24K42T-I/SO fits wearable health-monitor designs - heart-rate, SpO2, sleep trackers, fitness bands - because of its sub-microamp sleep modes and 1.8 V low-voltage operation from a small Li-ion or Li-polymer cell. The 12-bit ADC with computation plus DMA can sample optical PPG photodiode signals at low duty cycle, while CLC-based state machines implement heart-beat detection without waking the core. With 16 KB Flash it can host a small BLE SoC UART-bridge firmware plus on-device step-counting, and the 256-byte EEPROM retains user calibration across battery swaps.
推荐
推荐产品汇总
工程参考数据： PIC18LF24K42T-I/SO ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC18F24K42T-I/SO | PIC18LF24K42-I/SO | PIC18LF24K40T-I/SO | PIC18LF24K22-I/SO | PIC18LF24J10T-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-28 (7.50 mm wide-body) | SOIC-28 - same | SOIC-28 - same | SOIC-28 - same | SOIC-28 - same | SOIC-28 - same |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 8 KB (-50%) | 8 KB (-50%) |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 768 B (-25%) | 1 KB |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 40 MHz (-37%) |
| Operating Voltage (VDD) | 1.8 V to 3.6 V | 2.3 V to 5.5 V (no LF) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.0 V to 3.6 V (+11% min VDD) |
| ADC Resolution | 12-bit differential | 12-bit differential | 12-bit differential | 12-bit differential | 10-bit (-2 bits) | 10-bit (-2 bits) |
| DMA Controller | Yes | Yes | Yes | Yes | No | No |
| Core Independent Peripherals (CLC/CWG/NCO/ZCD) | Yes (full set) | Yes (full set) | Yes (full set) | Yes (subset) | No | No |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 21 (-16%) |
关键差异点
- Lower minimum VDD than the standard F variant （对比 PIC18F24K42T-I/SO)
- Full Core Independent Peripherals (CLC, CWG, NCO, ZCD) （对比 PIC18LF24K22-I/SO)
- On-chip DMA + 12-bit differential ADC （对比 PIC18LF24J10T-I/SO)
设计说明
Estimated: VDD decoupling requires a 100 nF ceramic as close as possible to pins 10/19 (VSS) and 28 (VDD), plus a bulk 1 uF to 10 uF ceramic or tantalum for transient handling. The LF variant's 1.8 V minimum VDD mandates a low-dropout regulator or direct Li-ion cell connection; do not exceed 3.6 V (per datasheet) to avoid permanent damage. The MCLR pin (pin 1) requires a 10 kΩ pull-up to VDD and a 100 nF capacitor to ground if hardware-reset functionality is used; tie directly to VDD if unused.
Route the ICS PGC (RB6, pin 26) and ICS PGD (RB7, pin 27) signals as short traces directly to the in-circuit serial programming header. Avoid routing high-frequency switching signals across these lines to prevent programming/debugger noise coupling. Place the 32.768 kHz or high-frequency crystal (if used, on RA6/RA7) close to the IC with grounded guard traces. The DMA-driven ADC paths benefit from keeping analog traces short and isolated from PWM/digital outputs on the same port.
Do not assume 64 MHz operation is possible across the full 1.8 V to 3.6 V range: 32 MHz is guaranteed at 2.5 V and above, and 16 MHz at 1.8 V. Configuring PLL or OSCCON for 64 MHz at 1.8 V may cause Flash read errors and silent peripheral misbehavior. Also, when migrating firmware from the older K22 or J10 families, note that the K42 adds DMA and Core Independent Peripherals - register maps differ from older families, so MCC-generated configuration code or the proper K42 device pack must be selected in MPLAB X IDE.
合规信息
RoHS and REACH compliant per Microchip product page; standard industrial-grade part (-I suffix), not AEC-Q100 qualified - for automotive AEC-Q100 applications use the PIC18F24K42 E/SSO AEC-Q100 grade instead.
