PIC18LF24K42-E/SP - 16KB Flash XLP 8-bit MCU 28-SPDIP | Microchip
料号： PIC18LF24K42-E/SP ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.85 | $185.00 |
| 500 | $1.62 | $810.00 |
| 1,000 | $1.38 | $1,380.00 |
PIC18LF24K42-E/SP 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash/RAM/EEPROM), and programmable peripherals such as ADC, PWM, timers, and communication interfaces (UART, SPI, I2C). The PIC18 architecture is a modified Harvard 8-bit RISC design; "XLP" specifically refers to Microchip's low-power IP for sleep-mode nanoWatt currents. Within the broader taxonomy, this device sits at: microcontroller -> 8-bit MCU -> PIC18 family -> PIC18LFxxK42 sub-family.
Key features include a 12-bit ADC with up to 24 channels, a 5-bit DAC, two comparators, vector interrupts, DMA, configurable logic cells (CLC), multiple PWM channels, and Core Independent Peripherals (CIPs). The integrated peripherals enable sensor conditioning, motor control, and LED driving without CPU intervention, supporting deterministic real-time response.
The device's XLP architecture with idle/doze/sleep modes, combined with 64 MHz CIPs, makes it well suited to battery-powered and energy-harvesting IoT nodes. The 28-SPDIP package supports hand-soldered prototypes and through-hole industrial designs where vibration tolerance and easy rework matter.
Typical applications include IoT sensor nodes, low-power wireless-connected embedded controllers, consumer appliance user interfaces, and portable medical or instrumentation devices. When designing, ensure decoupling per the 28-pin SPDIP layout guidelines and verify VDDCORE core-voltage bypass capacitor placement. This page synthesizes verified pricing, drop-in alternative MPNs, and engineering design notes beyond the manufacturer datasheet.
直接替换替代料： PIC18LF24K42-E/SP ——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： PIC18LF24K42-E/SP （相同外形与封装尺寸） ——差异在于 ADC, Package, MSL Level, DAC, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC18LF24K42-I/SP
✅ 直接替换✓ 有现货
$1.55 / 个
查看数据手册 →PIC18LF24K42-E/SP301
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F24K42-I/SP
✅ 直接替换✓ 有现货
$1.65 / 个
查看数据手册 →PIC18F24K42-E/SP
✅ 直接替换✓ 有现货
$1.62 / 个
查看数据手册 →PIC18LF24K40-I/SP
✅ 直接替换✓ 有现货
$1.55 / 个
查看数据手册 →PIC18LF24K42-E/SP 最大额定值与电气特性
| Core | PIC18 8-bit RISC |
| Family | PIC18LFxxK42 (XLP) |
| Program Memory (Flash) | 16 KB (8K x 16) |
| Data SRAM | 1 KB |
| Data EEPROM | 256 B |
| Maximum CPU Speed | 64 MHz |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| ADC | 12-bit, up to 24 channels |
| DAC | 5-bit, 1 channel |
| Comparators | 2 |
| PWM Channels | Multiple (per datasheet) |
| DMA | Yes |
| Vector Interrupts | Yes |
| 封装 | 28-SPDIP (0.300 inch, 7.62 mm) |
| 工作温度 | -40C to +125C (Extended) |
| 安装类型 | Through-Hole |
| 引脚数量 | 28 |
| MSL 等级 | 1 (per package) |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
PIC18LF24K42-E/SP 引脚配置
| 引脚 1 | MCLR — Master Clear (Reset) input, active low |
| 引脚 2 | RA0 — PORTA bit 0 / analog-capable I/O |
| 引脚 3 | RA1 — PORTA bit 1 / analog-capable I/O |
| 引脚 4 | RA2 — PORTA bit 2 / analog-capable I/O |
| 引脚 5 | RA3 — PORTA bit 3 / analog-capable I/O |
| 引脚 6 | RA4 — PORTA bit 4 / analog-capable I/O |
| 引脚 7 | RA5 — PORTA bit 5 / analog-capable I/O |
| 引脚 8 | RA6 — PORTA bit 6 / analog-capable I/O |
| 引脚 9 | RA7 — PORTA bit 7 / analog-capable I/O / DAC |
| 引脚 10 | VSS — Ground reference |
| 引脚 11 | VDD — Positive supply voltage (1.8V-3.6V) |
| 引脚 12 | RB0 — PORTB bit 0 / interrupt-on-change capable |
| 引脚 13 | RB1 — PORTB bit 1 / interrupt-on-change capable |
| 引脚 14 | RB2 — PORTB bit 2 / interrupt-on-change capable |
| 引脚 15 | RB3 — PORTB bit 3 / interrupt-on-change capable |
| 引脚 16 | RB4 — PORTB bit 4 / interrupt-on-change capable |
| 引脚 17 | RB5 — PORTB bit 5 / interrupt-on-change capable |
| 引脚 18 | RB6 — PORTB bit 6 / interrupt-on-change / ICSP programming |
| 引脚 19 | RB7 — PORTB bit 7 / interrupt-on-change / ICSP programming |
| 引脚 20 | VSS — Ground reference |
| 引脚 21 | VDD — Positive supply voltage (1.8V-3.6V) |
| 引脚 22 | RC0 — PORTC bit 0 / analog-capable I/O |
| 引脚 23 | RC1 — PORTC bit 1 / analog-capable I/O |
| 引脚 24 | RC2 — PORTC bit 2 / analog-capable I/O |
| 引脚 25 | RC3 — PORTC bit 3 / analog-capable I/O / SCL |
| 引脚 26 | RC4 — PORTC bit 4 / analog-capable I/O / SDA |
| 引脚 27 | RC5 — PORTC bit 5 / analog-capable I/O |
| 引脚 28 | RC6 — PORTC bit 6 / analog-capable I/O / TX |
典型应用
PIC18LF24K42-E/SP 适用于 7 应用s: Battery-Powered IoT Sensor Node, Consumer Appliance User Interface Controller, Portable Medical & Wellness Device, Industrial Sensor & 4-20 mA Transmitter, Automotive Body & Comfort Module (Sub-system), Smart Home Wireless-Connected Endpoint, Educational & Maker Prototyping Platform.
Battery-Powered IoT Sensor Node
The PIC18LF24K42-E/SP is purpose-built for battery-powered IoT sensor nodes thanks to its 1.8 V-3.6 V VDD range, XLP nanoWatt sleep currents, and integrated 12-bit ADC (up to 24 channels). Placed in a 2xAAA or coin-cell power domain, it can wake on comparator edges, perform 12-bit ADC reads via DMA without CPU load, transmit over UART/SPI/I2C to a companion radio, and return to deep sleep - extending node lifetime from months to multiple years. The 64 MHz core ensures CIP-driven sensor processing completes before the radio wakes the host.
推荐
Consumer Appliance User Interface Controller
The PIC18LF24K42-E/SP suits low-cost consumer appliance user-interface controllers where its 28-SPDIP through-hole package simplifies hand rework and field service. Its 64 MHz core and CIPs handle capacitive touch scanning (via CLC), PWM backlight control, and UART communication to the main appliance MCU without software overhead. The 1.8 V-3.6 V range allows direct 3.3 V operation from a small LDO, and the 1 KB SRAM is sufficient for UI state machines and message buffers.
推荐
Portable Medical & Wellness Device
The PIC18LF24K42-E/SP is appropriate for portable medical and wellness devices where low power, deterministic response, and IEC 60730 class B software-safety support are required. The integrated 12-bit ADC, two comparators, and 5-bit DAC enable accurate sensor measurements of pulse, SpO2, temperature, or galvanic skin response. XLP sleep currents extend battery life beyond one year on coin-cell, and the 28-SPDIP package supports through-hole designs favored in medical-grade assembly lines.
推荐
Industrial Sensor & 4-20 mA Transmitter
The PIC18LF24K42-E/SP drives industrial 4-20 mA loop-powered sensor heads because its 1.8 V minimum VDD allows the MCU and its 12-bit ADC to run from a low-drop regulator fed by the loop. The 64 MHz core plus CLC/DMA implement HART or proprietary modulation in hardware via CIPs, offloading the CPU. The 28-SPDIP package withstands industrial vibration better than SMD-only equivalents, supporting field installations where mechanical robustness is required.
推荐
Automotive Body & Comfort Module (Sub-system)
The PIC18LF24K42-E/SP fits automotive body and comfort sub-systems (interior lighting, seat controllers, mirror modules) when paired with external CAN-FD transceivers and automotive-grade protection. Its -40C to +125C extended temperature grade suits under-dash and door-module environments. Note: for AEC-Q100-qualified automotive designs, select the PIC18F24K42-E/SP Q-graded variant instead. The 28-SPDIP package supports easy prototype bring-up in automotive lab benches.
推荐
Smart Home Wireless-Connected Endpoint
The PIC18LF24K42-E/SP anchors smart-home wireless endpoints (Zigbee/Thread/BLE sensor nodes, smart plugs, occupancy sensors) where the MCU handles local actuation while a radio module handles connectivity. Its DMA, CLC, and 64 MHz core process sensor data and control PWM-driven LED indicators in real time. The LF 1.8 V-3.6 V range matches typical 3.3 V regulated radio rails, simplifying power architecture; the 28-SPDIP package is ideal for low-volume prototype builds.
推荐
Educational & Maker Prototyping Platform
The PIC18LF24K42-E/SP in 28-SPDIP is an excellent educational and maker platform because the through-hole package accepts solderless breadboards and hand-soldered perfboard builds. Its peripheral richness (12-bit ADC, 5-bit DAC, comparators, CLC, DMA) exposes students to advanced CIP concepts without the complexity of higher-end ARM cores. MPLAB X with XC8 and the free MCC code generator give newcomers a low-friction entry into embedded firmware development.
推荐
推荐产品汇总
工程参考数据： PIC18LF24K42-E/SP ——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 | PIC18LF24K42-I/SP | PIC18LF24K42-E/SP301 | PIC18F24K42-I/SP | PIC18F24K42-E/SP | PIC18LF24K40-I/SP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP (0.300 inch, 7.62 mm) | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same |
| Core / Architecture | 8-bit PIC18 RISC | 8-bit PIC18 RISC - same | 8-bit PIC18 RISC - same | 8-bit PIC18 RISC - same | 8-bit PIC18 RISC - same | 8-bit PIC18 RISC - same |
| Operating Voltage | 1.8 V - 3.6 V (LF) | 1.8 V - 3.6 V | 1.8 V - 3.6 V | 2.3 V - 5.5 V (F) | 2.3 V - 5.5 V (F) | 1.8 V - 3.6 V |
| Flash / SRAM / EEPROM | 16 KB / 1 KB / 256 B | 16 KB / 1 KB / 256 B | 16 KB / 1 KB / 256 B | 16 KB / 1 KB / 256 B | 16 KB / 1 KB / 256 B | 16 KB / 1 KB / 256 B |
| Max CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| ADC / DAC | 12-bit ADC (up to 24 ch) / 5-bit DAC | 12-bit ADC / 5-bit DAC | 12-bit ADC / 5-bit DAC | 12-bit ADC / 5-bit DAC | 12-bit ADC / 5-bit DAC | 10-bit ADC / no 5-bit DAC |
| Temperature Grade | Extended -40C to +125C (E) | Industrial -40C to +85C (I) | Extended -40C to +125C (E) | Industrial -40C to +85C (I) | Extended -40C to +125C (E) | Industrial -40C to +85C (I) |
关键差异点
- Extended industrial temperature grade (E suffix) （对比 PIC18LF24K42-I/SP)
- K42-generation Core Independent Peripherals (CLC, DMA, Vector Interrupts) （对比 PIC18LF24K40-I/SP)
- Low-voltage LF (1.8 V-3.6 V) operation with XLP nanoWatt sleep （对比 PIC18F24K42-E/SP)
设计说明
The PIC18LF24K42-E/SP requires VDD between 1.8 V and 3.6 V (LF variant); exceed 3.6 V and the internal charge pump regulator will be destroyed. Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pair on the 28-SPDIP package, plus a bulk 1-10 uF on the board supply rail. For battery designs, XLP sleep currents in the nanoampere regime dominate total energy; verify the actual deep-sleep Iq of your specific configuration in the datasheet rather than relying on the headline nanoWatt figure.
The 28-SPDIP footprint is through-hole with 0.100 inch (2.54 mm) row spacing and 0.300 inch (7.62 mm) body width. Route analog signals (ADC inputs, comparators) with short traces and a ground guard ring where possible to limit digital switching noise coupling. Avoid running PWM outputs parallel to analog ADC inputs; if necessary, separate by a ground trace. The MCLR pin requires a 10 kohm pull-up to VDD and a 100 nF decoupling cap to ground for proper reset operation.
Do not confuse the LF (1.8 V-3.6 V) variant with the F (2.3 V-5.5 V) variant - applying 5 V to a LF part will damage it. The PIC18LF24K42-E/SP is the extended-temperature (-40C to +125C) variant; the PIC18LF24K42-I/SP is industrial (-40C to +85C) and slightly cheaper. Configuration words (fuses) must be set correctly to enable the internal HFINTOSC and PLL, otherwise the MCU will run from the default low-speed oscillator. Always use MPLAB X IPE for ICSP programming - the older PICkit 2/3 are supported but deprecated for new designs.
Keep the ICSP programming pins (RB6/RB7) accessible for in-circuit programming - do not place series resistors on those lines below 1 kohm or programming may fail. The 28-SPDIP allows easy rework on perfboard and through-hole prototype boards, but for volume production migrate to the 28-SOIC (SO) or 28-SSOP (SS) surface-mount variants. Reserve a UART test header for firmware debugging; the PIC18LF24K42-E/SP exposes EUSART on RC6/RC7 by default but can be remapped via PPS.
合规信息
RoHS and lead-free per Microchip product page; AEC-Q100 not qualified - for AEC-Q100 automotive use select PIC18F24K42 with automotive-grade designation. REACH compliance per Microchip declaration.
