PIC18LF24J11-I/SP - 8-Bit 48MHz 16KB Flash XLP MCU | Microchip
MPN： PIC18LF24J11-I/SP ✓ 啟用中PIC18LF24J11-I/SP 概覽
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, data memory, and integrated peripherals. The PIC18 family uses Microchip's enhanced RISC architecture with a Harvard-style memory layout, separating program (Flash) and data (RAM) buses for predictable instruction execution. Within Microchip's taxonomy, the PIC18LF24J11 sits at the intersection of 8-bit MCU -> Flash MCU -> nanoWatt XLP -> PIC18J-series, giving engineers a balance of code density, peripheral flexibility, and sub-microamp sleep current. The 'J' series specifically targets cost-sensitive applications requiring deep-sleep current as low as 20nA typical, making it ideal for always-on sensor nodes.
Key features include 16KB (8K x 16) Flash program memory, 3.68KB data RAM, 16 programmable I/O pins, and Peripheral Pin Select (PPS) for flexible signal routing. The 48MHz internal oscillator (equivalent to 12 MIPS throughput) eliminates external crystal requirements in many designs, while the 10-bit ADC with up to 10 channels supports direct sensor interfacing. Deep-sleep current of approximately 20nA extends battery life in dormant IoT endpoints, and the on-chip 2.5V/3.3V LDO regulator allows direct connection to a single Li-ion cell or two AA cells.
Architecturally, the PIC18LF24J11 uses a 16-bit instruction word optimized for C-compiled code density, with 31-level hardware stack and interrupt-priority arbitration. The nanoWatt XLP feature set includes multiple low-power modes (Run, Idle, Sleep, Deep Sleep), enabling dynamic power scaling based on application workload. JTAG/ICSP debugging is supported through standard 2-wire or 4-wire interfaces.
Typical applications include battery-powered sensor nodes, IoT edge devices, low-energy wireless sensor hubs, portable medical monitors, remote controls, energy harvesting systems, consumer electronics with sleep-dominant duty cycles, and industrial control modules requiring extended battery life. The 28-pin SPDIP package supports hand-soldering and breadboard prototyping, which suits engineers transitioning from development to small-batch production.
When designing with this device, choose the LF variant for sub-3.3V operation; switch to the standard F variant (e.g. PIC18F24J11-I/SP) for 3.3V-only or 5V-tolerant applications. Maintain VDD decoupling within 5mm of the supply pin (100nF plus 10uF bulk) and respect the absolute maximum VDD of 3.6V for LF parts to avoid latch-up.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, including a curated comparison against same-family SPDIP variants and a 28-pin cross-reference matrix.
直接替換替代品，適用於 PIC18LF24J11-I/SP — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC18LF24J11-I/SP （相同外形與佔位） — 差異在於 Package, Core Architecture, Operating Temperature, ADC, Maximum CPU Speed.
PIC18LF24J10-I/SP
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18LF24J11-I/SO
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC18LF24J11-I/ML
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18F24J11-I/SP
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC18LF24J11T-I/SP
✅ 直接替換📋 參考替代品（不在目錄中）
PIC18LF2431-I/SP
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18LF24J11-I/SP 最大額定值與電氣特性
| Core Processor | PIC |
| Core Size | 8-Bit |
| 最大時脈頻率 | 48 MHz |
| Instruction Throughput | 12 MIPS |
| Program Memory Size | 16 KB (8K x 16) Flash |
| Data RAM Size | 3.68 KB |
| ADC Resolution | 10 bit |
| Number of I/O Pins | 16 |
| 工作電源電壓 | 2.0 V to 3.6 V |
| Minimum Operating Temperature | -40 C |
| Maximum Operating Temperature | +85 C |
| 封裝 | 28-SPDIP (SP) |
| 安裝方式 | Through Hole |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Series | PIC XLP 18J |
| 資料匯流排寬度 | 8 bit |
| RoHS 狀態 | Compliant |
PIC18LF24J11-I/SP 腳位配置
| 腳位 1 | MCLR/VPP/RE3 — Master Clear / Programming voltage / I/O pin RE3 |
| 腳位 2 | RA0/AN0 — Digital I/O RA0 / Analog input AN0 |
| 腳位 3 | RA1/AN1 — Digital I/O RA1 / Analog input AN1 |
| 腳位 4 | RA2/AN2/VREF- — Digital I/O RA2 / Analog input AN2 / ADC VREF- |
| 腳位 5 | RA3/AN3/VREF+ — Digital I/O RA3 / Analog input AN3 / ADC VREF+ |
| 腳位 6 | RA4 — Digital I/O RA4 |
| 腳位 7 | RA5/AN4 — Digital I/O RA5 / Analog input AN4 |
| 腳位 8 | VSS — Ground reference |
| 腳位 9 | OSC1/CLKI/RA7 — Crystal oscillator input / external clock / I/O RA7 |
| 腳位 10 | OSC2/CLKO/RA6 — Crystal oscillator output / clock output / I/O RA6 |
| 腳位 11 | RC0 — Digital I/O RC0 |
| 腳位 12 | RC1 — Digital I/O RC1 |
| 腳位 13 | RC2 — Digital I/O RC2 |
| 腳位 14 | RC3 — Digital I/O RC3 |
| 腳位 15 | RC4 — Digital I/O RC4 |
| 腳位 16 | RC5 — Digital I/O RC5 |
| 腳位 17 | RC6 — Digital I/O RC6 |
| 腳位 18 | RC7 — Digital I/O RC7 |
| 腳位 19 | VSS — Ground reference |
| 腳位 20 | VDD — Positive supply voltage |
| 腳位 21 | RB0/AN12 — Digital I/O RB0 / Analog input AN12 |
| 腳位 22 | RB1/AN10 — Digital I/O RB1 / Analog input AN10 |
| 腳位 23 | RB2/AN8 — Digital I/O RB2 / Analog input AN8 |
| 腳位 24 | RB3/AN9 — Digital I/O RB3 / Analog input AN9 |
| 腳位 25 | RB4/AN11 — Digital I/O RB4 / Analog input AN11 |
| 腳位 26 | RB5/AN13 — Digital I/O RB5 / Analog input AN13 |
| 腳位 27 | RB6/PGC — Digital I/O RB6 / ICSP clock |
| 腳位 28 | RB7/PGD — Digital I/O RB7 / ICSP data |
典型應用
PIC18LF24J11-I/SP 適用於 6 應用s: Battery-Powered IoT Sensor Nodes, Portable Medical Monitoring Devices, Energy Harvesting Wireless Switches, Industrial Sensor Hubs and Remote Terminals, Consumer Remote Controls and HIDs, Automotive Interior Accessories.
Battery-Powered IoT Sensor Nodes
The PIC18LF24J11-I/SP's nanoWatt XLP technology with approximately 20nA typical deep-sleep current makes it ideal for battery-powered IoT sensor nodes. The 2.0V minimum VDD allows direct operation from a single CR2032 coin cell or two AA alkaline cells without boost conversion. The integrated 10-bit ADC supports up to 10 analog input channels for temperature, humidity, or gas sensors, while I2C and SPI peripherals connect to low-power radios like LoRa or BLE modules. Deep-sleep mode with wake-on-interrupt enables multi-year battery life in duty-cycled sensing applications such as smart agriculture or building automation.
推薦
Portable Medical Monitoring Devices
The PIC18LF24J11-I/SP is well suited for portable medical monitors requiring extended battery life and reliable low-voltage operation. Its 2.0V-3.6V VDD range allows direct Li-ion cell operation, while 12 MIPS throughput supports real-time signal processing for pulse oximetry, blood pressure, or glucose monitoring peripherals. The 10-bit ADC captures analog signals from optical or electrochemical sensors with adequate resolution for clinical-grade measurements. Brown-out detect and watch-dog timer provide safety-critical reliability, while the industrial -40C to +85C temperature range supports bedside and ambulatory deployment.
推薦
Energy Harvesting Wireless Switches
For energy harvesting applications such as self-powered wireless light switches or remote controls, the PIC18LF24J11-I/SP's 20nA deep-sleep current and 2.0V minimum VDD enable operation from harvested kinetic or RF energy. The internal 2.5V/3.3V LDO regulates the harvested supply to clean logic levels for the MCU and attached radio. With Peripheral Pin Select and PWM, the same MCU can debounce mechanical inputs, generate RF transmission frames, and drive indicator LEDs. The 16KB Flash accommodates complete wireless protocol stacks such as EnOcean or custom sub-GHz protocols.
推薦
Industrial Sensor Hubs and Remote Terminals
The PIC18LF24J11-I/SP's industrial -40C to +85C temperature range and robust 16-bit instruction set make it suitable for industrial sensor hubs and remote terminal units. The 48MHz internal oscillator eliminates external crystal requirements in many designs, reducing BOM cost and improving reliability in vibration-prone environments. UART/USART connectivity supports RS-232, RS-485, or Modbus communication with industrial sensors and PLCs, while the 10-bit ADC integrates 4-20mA analog sensor inputs directly. Brown-out detect and WDT ensure reliable operation in electrically noisy factory environments.
推薦
Consumer Remote Controls and HIDs
The PIC18LF24J11-I/SP fits consumer remote controls and human interface devices (HIDs) where battery life dominates the BOM. Its 2.0V-3.6V VDD range supports single-coin-cell operation, and 20nA deep-sleep current keeps standby drain negligible. PWM peripherals drive IR LEDs or haptic feedback, while the integrated 10-bit ADC can read battery voltage for low-battery detection without external components. With 16KB Flash and 3.68KB RAM, the MCU accommodates complete IR or RF protocol stacks plus user-customizable button mapping.
推薦
Automotive Interior Accessories
Although not AEC-Q100 qualified, the PIC18LF24J11-I/SP can serve automotive interior accessory applications such as ambient lighting controllers, USB charging port logic, and cabin sensor nodes operating from a regulated 3.3V rail. The 48MHz performance supports LED PWM dimming and capacitive touch sensing through the integrated 10-bit ADC and peripheral pin select. Designers should note the industrial temperature grade (-40C to +85C) covers most cabin environments; for under-hood AEC-Q100 requirements, pair with PIC18F25K22-I/SP instead. The 28-SPDIP package is breadboard-friendly for prototyping.
推薦
推薦產品摘要
工程參考資料，適用於 PIC18LF24J11-I/SP — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC18LF24J10-I/SP | PIC18LF24J11-I/SO | PIC18LF24J11-I/ML | PIC18F24J11-I/SP | PIC18LF24J11T-I/SP | PIC18LF2431-I/SP |
|---|---|---|---|---|---|---|---|
| Package | 28-SPDIP (SP) | 28-SPDIP - same | 28-SOIC - drop-in (SMT) | 28-QFN - drop-in (SMT) | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage | 2.0V to 3.6V (LF) | 2.0V to 3.6V (LF) | 2.0V to 3.6V (LF) | 2.0V to 3.6V (LF) | 2.0V to 3.6V (F, 3.3V optimized) | 2.0V to 3.6V (LF) | 2.0V to 5.5V (LF) |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Data RAM | 3.68 KB | 3.68 KB | 3.68 KB | 3.68 KB | 3.68 KB | 3.68 KB | 768 B |
| Maximum Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 40 MHz |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) |
| Deep Sleep Current | ~20 nA typical | ~20 nA typical | ~20 nA typical | ~20 nA typical | ~20 nA typical | ~20 nA typical | ~50 nA typical |
主要差異化特點
- Sub-3.3V optimized low-voltage operation (對比PIC18F24J11-I/SP)
- Higher RAM vs older J-series MCUs (對比PIC18LF2431-I/SP)
- Lower cost vs K-series alternatives (對比PIC18LF23K22-I/SP)
設計說明
Place a 100nF ceramic decoupling capacitor within 5mm of each VDD pin (pins 11 and 20) and a single 10uF bulk capacitor near the MCU supply rail. The LF variant's 2.0V minimum VDD allows direct Li-ion cell operation, but adding a ferrite bead in series with VDD reduces conducted EMI from switching peripherals. For battery-powered designs, route MCLR (pin 1) through a 10kohm pull-up to VDD to prevent unintended resets during brown-out events.
The 28-SPDIP package has 2.54mm (100-mil) pin pitch compatible with standard 0.1-inch prototyping breadboards and through-hole PCB layouts. For mixed-signal applications, place analog signals (AN0-AN13) on the left side (RA/RB pins 2-7, 21-26) and digital signals on the right side (RC pins 11-18). Keep the analog AVSS pin tied directly to a low-impedance ground plane, not to digital ground. The exposed thermal pad on the QFN variant (PIC18LF24J11-I/ML) must be soldered to a continuous ground pour for thermal dissipation.
Do not exceed 3.6V VDD absolute maximum on the LF variant; latch-up can occur above ~4V. The Peripheral Pin Select (PPS) feature must be configured in firmware before digital peripherals function on non-default pins; failure to configure PPS is a common source of 'no communication' debugging sessions. Brown-out reset must be enabled in configuration bits for reliable LF operation below 2.5V. When migrating from F to LF variant, verify all I/O pull-up voltages match the LF 3.6V maximum rating.
Estimated: with the internal 48MHz oscillator, traces longer than ~25mm carrying CCP or PWM outputs may emit harmonics in the 100-200MHz range. Use series ferrite beads or 33ohm damping resistors on PWM outputs driving external FETs or LEDs to reduce ringing. For SPI communication above 10MHz, keep traces matched within 2mm and add 10kohm pull-ups on the chip-select line to prevent false triggering.
合規資訊
RoHS and REACH compliance per Microchip product page and Abacus Technologies distributor listing. Not AEC-Q100 qualified; for automotive designs use PIC18F25K22-I/SP or similar AEC-Q100 part. Halogen-free status not explicitly stated in verified data.
