PIC18F24J50-I/SS - 48MHz USB MCU 16KB Flash 28-SSOP | Microchip
料号： PIC18F24J50-I/SS ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.96 | $5.96 |
| 10 | $5.42 | $54.20 |
| 100 | $4.78 | $478.00 |
| 500 | $4.25 | $2,125.00 |
| 1,000 | $3.85 | $3,850.00 |
PIC18F24J50-I/SS 概述
What is a PIC18 USB microcontroller? It is a low-power, high-performance 8-bit RISC microcontroller with an integrated USB 2.0 full-speed transceiver and endpoint RAM, designed to drop into embedded designs that previously required an external USB serializer. Within Microchip's taxonomy, the PIC18F24J50 belongs to the PIC18 family, then the PIC18J sub-family (3.3V core with nanoWatt XLP technology), then the PIC18F2xJ50 USB group (28/44-pin variants).
Key differentiating features include nanoWatt XLP deep-sleep modes drawing as little as 20 nA, an on-chip full-speed USB 2.0 transceiver that eliminates external PHY chips, and an internal 31 kHz to 8 MHz oscillator with PLL flexibility for either low-power crystal-free operation or 48 MHz USB-accurate timing. The 10-bit ADC with up to 13 channels and the Enhanced Capture/Compare/PWM (ECCP) module support mixed-signal and motor-control peripherals without external glue logic.
Typical applications include USB HID peripherals such as keyboards, mice, and game controllers, USB-to-UART bridges, low-power battery-powered sensor nodes leveraging XLP sleep modes, and industrial instrumentation with USB diagnostics ports. The 28-pin SSOP footprint suits compact handheld enclosures.
When designing with this device, place the 4.7uF bulk and 0.1uF decoupling capacitors as close to Vdd/Vss pairs as possible and observe the 3.3V core voltage requirement, even when I/O lines talk to 5V logic. The internal regulator must be enabled via the CONFIG3L register or the part will not start.
This page consolidates distributor pricing, drop-in SSOP-28 alternatives from the PIC18F2xJ50 family, USB-capable cross-vendor options, and practical layout notes that go beyond the manufacturer datasheet to accelerate your design.
直接替换替代料： PIC18F24J50-I/SS ——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： PIC18F24J50-I/SS （相同外形与封装尺寸） ——差异在于 Package, ADC, Operating Temperature, Program Memory (Flash), RAM.
快速对比工具——选择替代料号进行并排对比：
PIC18F25J50-I/SS
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F26J50-I/SS
✅ 直接替换✓ 有现货
$1.96 / 个
查看数据手册 →PIC18LF24J50-I/SS
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F24J50T-I/SS
✅ 直接替换✓ 有现货
$3.85 / 个
查看数据手册 →PIC18F24J10-I/SS
✅ 直接替换✓ 有现货
$2.45 / 个
查看数据手册 →PIC18F24J50-I/SS 最大额定值与电气特性
| Core Architecture | PIC18, 8-bit RISC |
| Family | PIC18F2xJ50 (USB, nanoWatt XLP) |
| Maximum CPU Frequency | 48 MHz (12 MIPS) |
| Program Memory (Flash) | 16 KB (8K x 16 words) |
| Data SRAM | 3.8 KB |
| USB Interface | USB 2.0 Full-Speed (12 Mbps), on-chip transceiver |
| I/O Pins | 25 |
| ADC | 10-bit, up to 13 channels |
| Core Operating Voltage (Vdd) | 2.0 V to 3.6 V |
| I/O Supply Voltage (Vddio) | 2.0 V to 3.6 V (5V tolerant inputs) |
| 工作温度 | -40 C to +85 C (Industrial) |
| 封装 | 28-pin SSOP (Shrink Small Outline Package) |
| 安装类型 | Surface Mount |
| MSL 等级 | 1 (unlimited at floor life <=30C/85%RH) |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
PIC18F24J50-I/SS 引脚配置
| 引脚 1 | RA0/AN0/CVREF — Port A bit 0 / ADC channel 0 / comparator voltage reference output |
| 引脚 2 | RA1/AN1 — Port A bit 1 / ADC channel 1 |
| 引脚 3 | RA2/AN2/VREF- — Port A bit 2 / ADC channel 2 / ADC Vref- |
| 引脚 4 | RA3/AN3/VREF+ — Port A bit 3 / ADC channel 3 / ADC Vref+ |
| 引脚 5 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| 引脚 6 | RA5/AN4 — Port A bit 5 / ADC channel 4 |
| 引脚 7 | RA6 — Port A bit 6 |
| 引脚 8 | RA7 — Port A bit 7 |
| 引脚 9 | Vss — Ground reference |
| 引脚 10 | VDD — Positive supply voltage (3.3V typical) |
| 引脚 11 | RB0/AN12/INT0 — Port B bit 0 / ADC channel 12 / external interrupt 0 |
| 引脚 12 | RB1/AN10/INT1 — Port B bit 1 / ADC channel 10 / external interrupt 1 |
| 引脚 13 | RB2/AN8 — Port B bit 2 / ADC channel 8 |
| 引脚 14 | RB3/AN9 — Port B bit 3 / ADC channel 9 |
| 引脚 15 | RB4/AN11 — Port B bit 4 / ADC channel 11 |
| 引脚 16 | RB5/CCP5 — Port B bit 5 / CCP5 module |
| 引脚 17 | RB6/PGC — Port B bit 6 / ICSP clock input |
| 引脚 18 | RB7/PGD — Port B bit 7 / ICSP data input/output |
| 引脚 19 | VUSB — USB transceiver 3.3V supply (must be decoupled with 4.7uF + 0.1uF) |
| 引脚 20 | D+ — USB D+ data line (27 ohm series resistor to connector) |
| 引脚 21 | D- — USB D- data line (27 ohm series resistor to connector) |
| 引脚 22 | RC0 — Port C bit 0 |
| 引脚 23 | RC1 — Port C bit 1 |
| 引脚 24 | RC2 — Port C bit 2 |
| 引脚 25 | RC6 — Port C bit 6 |
| 引脚 26 | RC7 — Port C bit 7 |
| 引脚 27 | RC4 — Port C bit 4 |
| 引脚 28 | RC5 — Port C bit 5 |
典型应用
PIC18F24J50-I/SS 适用于 6 应用s: USB HID Peripherals (Keyboard/Mouse/Gamepad), USB-to-UART Serial Bridge, Battery-Powered Sensor Node with USB Diagnostics, USB Foot Pedal / Industrial Hand Switch, USB Programmer / Debug Probe Target Board, USB LED Lighting Controller (DMX-over-USB).
USB HID Peripherals (Keyboard/Mouse/Gamepad)
The PIC18F24J50-I/SS is engineered for USB Human Interface Device peripherals thanks to its integrated USB 2.0 full-speed transceiver, 1.5 KB endpoint RAM, and 16 KB Flash that comfortably hosts HID class drivers. At 48 MHz the part delivers 12 MIPS, enough to debounce a 104-key mechanical keyboard matrix at 1 kHz polling rate. The on-chip 10-bit ADC scans analog joysticks or trigger potentiometers in the same scan loop. Deep-sleep at 100 nA extends battery life on wireless HID dongles.
推荐
USB-to-UART Serial Bridge
Use the PIC18F24J50-I/SS as a USB CDC bridge to expose a virtual COM port over USB, eliminating external UART-USB ICs such as FTDI chips. The 48 MHz CPU, 3.8 KB RAM, and full-speed USB handle 921600 baud transparently. The 25 I/O pins allow breakout of TX/RTS/CTS handshaking alongside status LEDs. With nanoWatt XLP at 100 nA idle, the bridge draws negligible current when the host is suspended.
推荐
Battery-Powered Sensor Node with USB Diagnostics
The PIC18F24J50-I/SS powers battery-operated sensor nodes with intermittent USB diagnostics, leveraging nanoWalt XLP deep-sleep at 20 nA and 2.0-3.6V core Vdd to run directly from a CR2032 or 2x AA alkaline stack. Wake from sleep via WDT or external interrupt, sample with the 10-bit ADC at 13-channel resolution, then enumerate as a USB CDC device only when a service cable is attached. The integrated USB transceiver saves the $0.50-$1 cost of an external PHY chip.
推荐
USB Foot Pedal / Industrial Hand Switch
Pair the PIC18F24J50-I/SS with mechanical foot switches or hand triggers in industrial automation, where the integrated USB-HID stack reports keystrokes without custom PC drivers. The 28-SSOP package fits inside an IP65 sealed enclosure; the 5V-tolerant I/O accept industrial 24V signals via external resistor dividers. The 16 KB Flash hosts the HID stack plus application-specific debounce and press-and-hold logic with room to spare for factory-test routines.
推荐
USB Programmer / Debug Probe Target Board
OEMs building USB programmers and debug probes use the PIC18F24J50-I/SS as the target MCU on development boards, where its 28-SSOP footprint is easy to hand-solder and its 16 KB Flash is large enough for bootloader + application demos. ICSP via PGD/PGC pins supports in-circuit programming without removing the part. The 48 MHz operation demonstrates the practical limits of an 8-bit USB stack with CDC, HID, and vendor-class endpoints coexisting.
推荐
USB LED Lighting Controller (DMX-over-USB)
Stage lighting designers adopt the PIC18F24J50-I/SS for DMX-over-USB dongles where the integrated USB full-speed and 48 MHz clock drive a DMX512 transmitter via software bit-banging or via the ECCP module. The 10-bit ADC can sample ambient light for auto-dimming, while nanoWalt XLP keeps standby current below 100 nA when the host PC is off. The 28-SSOP footprint allows the dongle to fit inside an XLR-connector shell.
推荐
推荐产品汇总
工程参考数据： PIC18F24J50-I/SS ——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 | PIC18F25J50-I/SS | PIC18F26J50-I/SS | PIC18LF24J50-I/SS | PIC18F24J50T-I/SS | PIC18F24J10-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Program Flash | 16 KB | 32 KB | 64 KB | 16 KB | 16 KB | 16 KB |
| Data RAM | 3.8 KB | 3.8 KB | 3.8 KB | 3.8 KB | 3.8 KB | 3.8 KB |
| USB 2.0 Full-Speed | Yes (integrated) | Yes (integrated) | Yes (integrated) | Yes (integrated) | Yes (integrated) | No (USB absent) |
| Maximum CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Core Voltage | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V (LF process, lower Iq) | 2.0V to 3.6V | 2.0V to 3.6V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
关键差异点
- Integrated USB 2.0 Full-Speed transceiver with 1.5 KB endpoint RAM （对比 PIC18F24J10-I/SS)
- 16 KB Flash is smallest in PIC18F2xJ50 family but offers lowest unit cost （对比 PIC18F26J50-I/SS)
- Industrial -40C to +85C operating range with nanoWatt XLP deep-sleep （对比 PIC18F4550-I/P (40-pin DIP, 5V native))
设计说明
Place a 4.7uF tantalum or ceramic capacitor plus a 0.1uF decoupling cap directly at the Vdd/Vss pair (pins 10/9). The VUSB pin (pin 19) requires its own 4.7uF plus 0.1uF network to stabilize the internal USB 3.3V regulator. Without these local caps, the USB transceiver may fail USB compliance tests for inrush current and droop.
Enable the internal 3.3V regulator in CONFIG3L (ENVREG = 1) before the part will start. With the regulator disabled, the device sits in reset indefinitely because the USB transceiver and digital core have no rail. Also remember that VDDIO and VDD share the same 3.3V rail on the 28-pin device; there is no separate 5V-tolerant rail to bias.
Route the USB D+ and D- traces as a 90-ohm differential pair with matched length to within 50 mils. Keep the 27-ohm series resistors within 5 mm of the MCU pins. Add a 15 kohm pull-down on D- and a 1.5 kohm pull-up on D+ (software-controlled via the USB module) so the device enumerates correctly in USB Full-Speed mode.
When migrating from PIC18F4550 designs, note that the PIC18F24J50 lacks a separate Vbus pin and uses VUSB instead. USB bus-powered designs must add a 470uF bulk capacitor at the upstream VBUS node per USB 2.0 spec section 7.1.5.1, plus a current-limiting circuit because the 24J50 cannot source 100 mA directly to the bus.
合规信息
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified (consumer/industrial grade, not automotive). Lead-free SSOP package is MSL-1 rated. Conflict-minerals declaration available from Microchip.
