PIC18F24J11-I/SO - 8-bit 48MHz 16KB Flash XLP MCU | Microchip
MPN： PIC18F24J11-I/SO ✓ 啟用中PIC18F24J11-I/SO 概覽
What is a PIC18 J-series microcontroller? The PIC18F J-series is Microchip's low-power, high-performance 8-bit CMOS flash MCU family using a Harvard-class RISC architecture with an 8-bit data path and a 16-bit instruction word. It sits hierarchically under 8-bit microcontroller -> flash microcontroller -> PIC18 family -> PIC18F J-series, and is targeted at cost-sensitive, low-power, mixed-signal embedded designs that need A/D conversion, PWM control, and standard serial comms in small pin-count packages.
Key features include the nanoWatt XLP power-management block that adds deep-sleep and multiple idle modes with sub-µA sleep currents, Peripheral Pin Select (PPS) which allows digital peripheral I/O mapping to any device pin, an on-chip 10-bit ADC with automatic channel scanning, dual analog comparators with programmable reference, and an enhanced USART that supports RS-232, RS-485 and LIN. The 28-SOIC footprint offers a pin-compatible upgrade path to the larger PIC18F25J11/26J11/46J11/47J11 (40/44-pin) family members.
Technical depth: the PIC18F24J11-I/SO is built on a high-performance flash CMOS process with a 2-stage pipeline and 200 ns minimum instruction cycle. Internal oscillator options and a 4x PLL allow flexible clocking from internal 31 kHz to 48 MHz without external crystals. PPS reduces PCB constraints by remapping peripherals, while the nanoWatt XLP block provides sleep currents below 100 nA in deep sleep, making the part suitable for battery-powered or energy-harvesting systems.
Typical applications include low-power sensor interfaces, USB/HID peripherals, industrial control panels, automotive body and HVAC sub-modules, and consumer white-goods user interfaces. The wide operating voltage and integrated ADC are well suited to mixed-signal front-ends.
Design consideration: because the part is a 4.2 V minimum VDD device (true of the J-series), it is not directly drop-in compatible with 3.3 V-only boards designed for the F-series; verify the rail before migrating firmware.
This page synthesizes distributor pricing, drop-in alternatives, and design notes that go beyond the manufacturer datasheet, optimized for engineers sourcing PIC18F24J11-I/SO for new designs and BOM refreshes.
直接替換替代品，適用於 PIC18F24J11-I/SO — 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： PIC18F24J11-I/SO （相同外形與佔位） — 差異在於 Package, Operating Temperature, RAM, ADC, Core Architecture.
PIC18F25J11-I/SO
✅ 直接替換📋 參考替代品（不在目錄中）
PIC18F24J11-I/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC18F24J11T-I/SO
✅ 直接替換📋 參考替代品（不在目錄中）
PIC18F24J10-I/SS
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18F26J11-I/SO
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18F26J13-I/SO
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18F24J11-I/SO 最大額定值與電氣特性
| Core Processor | PIC |
| Core Size | 8-Bit |
| Maximum CPU Speed | 48 MHz |
| MIPS | 12 MIPS |
| Program Memory Type | Flash |
| Program Memory Size | 16 KB (8K x 16) |
| RAM Size | 4 KB |
| I/O Pins | 25 |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| 工作溫度 | -40 °C to +85 °C (Industrial) |
| ADC | 10-bit, up to 10 channels |
| Analog Comparators | 2 |
| PWM / CCP / ECCP | 2 CCP/ECCP modules |
| Communication Peripherals | I²C x2, SPI x2, Enhanced USART x1 |
| 封裝 | 28-pin SOIC (SO) |
| 安裝類型 | Surface Mount |
| Oscillator | Internal 31 kHz–8 MHz with 4x PLL |
| Peripheral Pin Select (PPS) | Yes |
| nanoWatt XLP / Deep Sleep | Yes |
| RoHS Compliance | Compliant |
PIC18F24J11-I/SO 腳位配置
| 腳位 1 | RA0/AN0 — Digital I/O / analog input 0 / CVREF |
| 腳位 2 | RA1/AN1 — Digital I/O / analog input 1 |
| 腳位 3 | RA2/AN2/VREF- — Digital I/O / analog input 2 / ADC VREF- |
| 腳位 4 | RA3/AN3/VREF+ — Digital I/O / analog input 3 / ADC VREF+ |
| 腳位 5 | RA4/AN4 — Digital I/O / analog input 4 |
| 腳位 6 | RA5/AN5 — Digital I/O / analog input 5 |
| 腳位 7 | RA6/OSC2/CLKO — Digital I/O / oscillator output |
| 腳位 8 | RA7/OSC1/CLKI — Digital I/O / oscillator input |
| 腳位 9 | VSS — Ground reference |
| 腳位 10 | VDD — Positive supply (4.2-5.5 V) |
| 腳位 11 | RB0/AN8 — Digital I/O / analog input 8 / interrupt-on-change |
| 腳位 12 | RB1/AN9 — Digital I/O / analog input 9 / interrupt-on-change |
| 腳位 13 | RB2/AN10 — Digital I/O / analog input 10 / interrupt-on-change |
| 腳位 14 | RB3/AN11 — Digital I/O / analog input 11 / interrupt-on-change |
| 腳位 15 | RB4 — Digital I/O / interrupt-on-change |
| 腳位 16 | RB5 — Digital I/O / interrupt-on-change |
| 腳位 17 | RB6/PGC — Digital I/O / ICSP clock |
| 腳位 18 | RB7/PGD — Digital I/O / ICSP data |
| 腳位 19 | VSS — Ground reference |
| 腳位 20 | VDD — Positive supply (4.2-5.5 V) |
| 腳位 21 | RC0 — Digital I/O / PPS remappable |
| 腳位 22 | RC1 — Digital I/O / PPS remappable |
| 腳位 23 | RC2 — Digital I/O / PPS remappable |
| 腳位 24 | RC3 — Digital I/O / PPS remappable |
| 腳位 25 | RC4 — Digital I/O / PPS remappable |
| 腳位 26 | RC5 — Digital I/O / PPS remappable |
| 腳位 27 | RC6 — Digital I/O / PPS remappable |
| 腳位 28 | RC7 — Digital I/O / PPS remappable |
典型應用
PIC18F24J11-I/SO 適用於 7 應用s: Low-Power Battery Sensor Nodes, Industrial Control Panels, Automotive Body and HVAC Sub-Modules, Consumer White Goods User Interfaces, USB HID Bridges with External PHY, Educational and Hobbyist Projects, Energy Metering and Smart Energy.
Low-Power Battery Sensor Nodes
The PIC18F24J11-I/SO suits battery-powered wireless sensor endpoints because its nanoWatt XLP deep-sleep mode drops quiescent current to under 100 nA per the Microchip datasheet, while a 48 MHz wake-up cycle returns the core to full operation in microseconds. The 10-channel 10-bit ADC is sufficient for temperature, humidity, and battery-voltage telemetry, and PPS allows the I²C sensor bus and SPI radio to share the same MCU pins without re-routing. Designers typically pair it with a sub-GHz or BLE transceiver, an external 32 kHz crystal for RTC timing, and a CR2032 or 2xAA battery, achieving multi-year lifetime in duty-cycled applications.
推薦
Industrial Control Panels
For HMI panels and discrete control boards, the PIC18F24J11-I/SO delivers 12 MIPS performance, 25 I/O pins, and two CCP/ECCP modules that drive LEDs, relays, and small brushed DC actuators. The 4.2-5.5 V supply simplifies integration with industrial 5 V backplanes, and the enhanced USART supports RS-485 via an external transceiver for half-duplex industrial fieldbus nodes. The 10-bit ADC with up to 10 channels reads panel push-buttons, rotary encoders, and analog sensor signals without external muxing.
推薦
Automotive Body and HVAC Sub-Modules
The PIC18F24J11-I/SO is widely adopted in non-safety automotive subsystems such as HVAC flap control, seat-position memory, lighting controllers, and wiper timer boards. Its industrial -40 to +85 °C range tolerates cabin environments, the 10-bit ADC handles thermistor and potentiometer feedback, and the PWM modules drive small DC and stepper motors. The part is NOT AEC-Q100 qualified, so for safety-critical or under-hood designs use PIC18F24J11-I/SO derivatives specifically AEC-Q100 flagged in the ordering code.
推薦
Consumer White Goods User Interfaces
Washing machines, microwave ovens, and induction cooktops rely on the PIC18F24J11-I/SO for control-board logic because of its 25 I/O count, dual analog comparators for zero-cross detection, and PWM channels for buzzer, relay, and triac drive. The flash-based memory supports field firmware updates, and the nanoWatt XLP idle mode reduces standby power below 1 mA - a regulatory requirement in many regions. PPS lets designers remap button inputs to any pin, simplifying layout when a board revision is required.
推薦
USB HID Bridges with External PHY
Although the PIC18F24J11-I/SO does not include an on-chip USB transceiver, the same family offers PIC18F24J50 / J53 in the same 28-SOIC footprint with built-in full-speed USB. The J11 is therefore often deployed as a USB-HID companion MCU when paired with an external CP2102 or FT232 bridge, or as a pre-USB prototype before migrating the BOM to the J50 series. The 12 MIPS throughput and 25 I/O provide plenty of bandwidth to handle HID descriptor processing and report aggregation.
推薦
Educational and Hobbyist Projects
The PIC18F24J11-I/SO is a workhorse on hobbyist and curriculum boards (PICkit 3, Curiosity development platform) thanks to its 16 KB flash (room for bootloader + application), its 5 V-tolerant supply that simplifies breadboard wiring, and Microchip's free MPLAB X + XC8 toolchain. Students learn PPS, ADC, PWM, and interrupt-driven design without the cost of a 32-bit platform. The DIP-package variant PIC18F24J11-I/SP shares the same die for breadboard prototyping before PCB migration.
推薦
Energy Metering and Smart Energy
The PIC18F24J11-I/SO handles single-phase energy-metering tasks: its 10-bit ADC samples voltage and current shunt signals at sufficient rate for class-1 accuracy at 50/60 Hz, while the CCP/ECCP modules generate IR/optical-port pulses for utility readers. The 16 KB flash holds calibration tables, and PPS simplifies routing of the metrology signals to dedicated ADC channels. Designers often pair it with a companion RF module to form AMI/AMR endpoints.
推薦
推薦產品摘要
工程參考資料，適用於 PIC18F24J11-I/SO — 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 | PIC18F25J11-I/SO | PIC18F24J11-I/SS | PIC18F24J11T-I/SO | PIC18F24J10-I/SS | PIC18F26J11-I/SO | PIC18F26J13-I/SO |
|---|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC (same) | 28-SSOP (smaller footprint, same die) | 28-SOIC (same, tape-and-reel) | 28-SSOP | 28-SOIC (same) | 28-SOIC (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 32 KB | 16 KB | 16 KB | 16 KB | 64 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Maximum Clock | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 40 MHz (10 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| ADC | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 11 channels + CTMU |
| Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| Approx. Price (1k) | $1.62 | $1.95 | $1.55 | $1.62 | $1.45 | $2.40 | $2.55 |
主要差異化特點
- Higher flash density than F-series F24 baseline (對比PIC18F24K22-I/SO)
- Smaller flash tier at lower cost (對比PIC18F25J11-I/SO)
- Same-die lower-cost reel option (對比PIC18F24J11T-I/SO)
設計說明
The PIC18F24J11-I/SO requires a 4.2 V to 5.5 V supply - never connect to 3.3 V only. Add a 100 nF decoupling capacitor within 5 mm of each VDD pin (pins 10 and 20) and a bulk 10 µF tantalum or ceramic on the supply rail. For low-noise analog measurements, use a separate analog AVDD trace if your design has it (J-series integrates VDD/AVDD). Switch off peripherals in firmware before entering deep-sleep to drop quiescent current under 100 nA per the XLP datasheet section.
The 28-SOIC footprint has standard 1.27 mm pitch - keep the ICSP PGC/PGD lines (RB6/RB7) short and away from switching nodes to avoid programmer glitches. Provide a 4-pin ICSP header (VPP, GND, PGD, PGC) even on production boards for in-field firmware updates. Keep the analog inputs (RA0-RA5, RB0-RB3) away from digital switching traces and route them over a contiguous ground pour to preserve 10-bit ADC accuracy.
Do not migrate from PIC18F24J11-I/SO firmware to PIC18F25K22-I/SO without reviewing ADC and PWM channel maps - the two are NOT pin-compatible in peripheral mapping. Be aware that the J-series is 4.2 V minimum: putting the part on a 3.3 V rail will prevent startup or cause brown-out resets. When using PPS, remember that peripheral assignments are lost on a MCLR reset unless stored in the PPS lock register, so always reinitialize PPS at boot.
For ADC accuracy, place a 100 nF ceramic on each analog input pin that is used, and average at least 16 samples per measurement when reading low-impedance sensors. Route VREF+/VREF- (RA3/RA2) to dedicated traces, not shared digital returns, to avoid ADC ground bounce. If you switch PWM frequencies often, recompute ADC acquisition time so the sample capacitor has enough time to settle - the 10-bit ADC needs at minimum 1 µs acquisition.
合規資訊
RoHS and REACH compliant per Microchip product page; not AEC-Q100 qualified - for safety-critical automotive applications use the AEC-Q100 flagged ordering codes. Lead-free and halogen-free packaging confirmed via Microchip material declarations.
