PIC24FJ32GU205-E/M4 - 32KB USB XLP MCU 16-bit | Microchip
料号： PIC24FJ32GU205-E/M4 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.95 | $3.95 |
| 10 | $3.55 | $35.50 |
| 100 | $3.18 | $318.00 |
| 500 | $2.84 | $1,420.00 |
| 1,000 | $2.55 | $2,550.00 |
PIC24FJ32GU205-E/M4 概述
A 16-bit MCU is a microcontroller with a 16-bit data path, register width, and ALU, sitting between 8-bit MCUs (PIC16, AVR) and 32-bit MCUs (Cortex-M, PIC32). The PIC24F family is Microchip's 16-bit ultra-low-power line, and the GU2 sub-family specifically adds Full-Speed USB plus rich CIPs - hardware timers, CRC, RTCC, comparators, and ADC - that run without CPU intervention, which is critical for low-power IoT and USB device designs.
Key features include hardware USB 2.0 Full-Speed with on-chip transceiver and internal pull-ups, 32KB ECC Flash (11K x 24 words) for code and data EEPROM emulation, 8KB SRAM, and multiple power-saving modes including Deep Sleep with RTCC, allowing battery-powered designs to retain state for years. The 48-pin UQFN exposes up to 38 I/O, three 16-bit timers, a 12-bit ADC, three UARTs, two SPI, two I2C, and the USB endpoint hardware. Internal die temperature sensor and watchdog timer add diagnostic and safety hooks.
Typical applications include USB HID peripherals (keyboards, mice, custom input devices), USB-to-UART/SPI/I2C bridges, USB battery chargers, sensor hubs, portable medical accessories, and e-metering or industrial data loggers. The extended -40C to +125C range also supports automotive interior and under-hood telemetry where USB-C diagnostics ports are used. Pair the device with a USB Type-C port controller or direct USB Micro-B connector; the internal pull-ups and full-speed PHY remove the need for an external PHY chip.
Design consideration: Place the VUSB3V3 pin's 0.47uF decoupling capacitor within 2 mm of the pin to keep USB signal-integrity margins; route D+/D- as a 90 ohm differential pair. The UQFN's exposed pad must be soldered to a continuous ground pour to meet the 31 C/W theta_JA thermal rating. Bulk-decouple VDDCORE and AVDD separately with 1uF X7R ceramics, and add 10uF on VBUS for inrush surge support.
This page synthesizes verified distributor pricing, drop-in alternatives, and practical design notes that you will not find in the manufacturer datasheet alone, including same-family variants in the Site MPN list that share the 48-pin UQFN (M4) footprint for direct PCB reuse.
直接替换替代料： PIC24FJ32GU205-E/M4 ——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： PIC24FJ32GU205-E/M4 （相同外形与封装尺寸） ——差异在于 Package, ADC, Program Memory (Flash), Core Architecture, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC24FJ32GU205-I/M4
✅ 直接替换📋 参考替代料（不在目录中）
PIC24FJ64GU205-E/M4
✅ 直接替换✓ 有现货
$2.62 / 个
查看数据手册 →PIC24FJ128GU405-I/PT
✅ 直接替换✓ 有现货
$3.25 / 个
查看数据手册 →PIC24FJ32GU203-E/M5
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.45 / 个
查看数据手册 →dsPIC33FJ32GP202-I/MM
✅ 直接替换📋 参考替代料（不在目录中）
PIC24FJ256GU405-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.75 / 个
查看数据手册 →PIC24FJ32GU205-E/M4 最大额定值与电气特性
| Core Architecture | PIC24F (16-bit RISC modified Harvard) |
| Family | PIC24FJ GP2/GU2 (USB + XLP) |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Flash | 32 KB (11K x 24 words, ECC) |
| Data RAM | 8 KB |
| USB | Full-Speed USB 2.0 Host/Device/OTG, internal transceiver |
| Operating Voltage | 2.0 V to 3.6 V (VDD) |
| 工作温度 | -40C to +125C (E-temp / extended) |
| I/O Pins | Up to 38 (48-pin UQFN) |
| 封装 | 48-pin UQFN (6x6 mm) |
| 安装类型 | Surface Mount, exposed thermal pad |
| ADC | 12-bit, multiple channels |
| Timers | Three 16-bit Timer/Counter modules |
| Communication | 3x UART, 2x SPI, 2x I2C, USB |
| RoHS 状态 | Compliant |
| MSL 等级 | MSL3 (per JEDEC J-STD-020) |
PIC24FJ32GU205-E/M4 引脚配置
| 引脚 1 | RA0 — General-purpose I/O / analog input AN0 |
| 引脚 2 | RA1 — General-purpose I/O / analog input AN1 |
| 引脚 3 | RA2 — General-purpose I/O / analog input AN2 |
| 引脚 4 | RA3 — General-purpose I/O / analog input AN3 |
| 引脚 5 | VDD — Digital supply 2.0 V to 3.6 V |
| 引脚 6 | RA4 — General-purpose I/O / analog input AN4 |
| 引脚 7 | RA5 — General-purpose I/O / analog input AN5 |
| 引脚 8 | RA6 — General-purpose I/O / analog input AN6 |
| 引脚 9 | RA7 — General-purpose I/O / analog input AN7 |
| 引脚 10 | VSS — Digital ground |
| 引脚 11 | OSCI — Crystal oscillator input / CLKI |
| 引脚 12 | OSCO — Crystal oscillator output / CLKO |
| 引脚 13 | RB0 — General-purpose I/O / PGED3 |
| 引脚 14 | RB1 — General-purpose I/O / PGEC3 |
| 引脚 15 | RB2 — General-purpose I/O |
| 引脚 16 | RB3 — General-purpose I/O |
| 引脚 17 | VBUS — USB VBUS sense input |
| 引脚 18 | VUSB3V3 — USB 3.3 V supply pin |
| 引脚 19 | D- — USB D- differential data line |
| 引脚 20 | D+ — USB D+ differential data line |
| 引脚 21 | RB4 — General-purpose I/O |
| 引脚 22 | RB5 — General-purpose I/O |
| 引脚 23 | RB6 — General-purpose I/O |
| 引脚 24 | RB7 — General-purpose I/O |
| 引脚 25 | RC0 — General-purpose I/O |
| 引脚 26 | RC1 — General-purpose I/O |
| 引脚 27 | RC2 — General-purpose I/O |
| 引脚 28 | RC3 — General-purpose I/O |
| 引脚 29 | RC4 — General-purpose I/O |
| 引脚 30 | RC5 — General-purpose I/O |
| 引脚 31 | RC6 — General-purpose I/O |
| 引脚 32 | RC7 — General-purpose I/O |
| 引脚 33 | RD0 — General-purpose I/O |
| 引脚 34 | RD1 — General-purpose I/O |
| 引脚 35 | RD2 — General-purpose I/O |
| 引脚 36 | RD3 — General-purpose I/O |
| 引脚 37 | RD4 — General-purpose I/O |
| 引脚 38 | RD5 — General-purpose I/O |
| 引脚 39 | RD6 — General-purpose I/O |
| 引脚 40 | RD7 — General-purpose I/O |
| 引脚 41 | RE0 — General-purpose I/O |
| 引脚 42 | RE1 — General-purpose I/O |
| 引脚 43 | AVDD — Analog supply (filtered from VDD) |
| 引脚 44 | AVSS — Analog ground |
| 引脚 45 | VDDCORE — Internal 1.2 V core regulator output, decouple with 1uF |
| 引脚 46 | MCLR — Master clear reset, active-low |
| 引脚 47 | NC — Not connected (per datasheet) |
| 引脚 48 | EP — Exposed thermal pad - connect to ground |
典型应用
PIC24FJ32GU205-E/M4 适用于 7 应用s: USB HID Peripherals (Keyboard, Mouse, Custom Input), USB-to-Serial/I2C/SPI Bridge Adapter, Portable Medical Sensor Accessory, Industrial Data Logger with USB Interface, USB Smart Battery Charger, Automotive Interior Telemetry (USB Diagnostics Port), IoT Sensor Hub with USB Configuration.
USB HID Peripherals (Keyboard, Mouse, Custom Input)
The PIC24FJ32GU205-E/M4 is ideal for USB Human Interface Device designs because its integrated Full-Speed USB 2.0 Device controller with on-chip transceiver eliminates the need for an external PHY, and the 38 available I/O directly drive key matrix scanners. With 32 KB ECC Flash supporting USB HID class descriptors plus composite device stacks, and 8 KB RAM handling HID report buffers, the part meets the throughput requirements of keyboards, mice, and game controllers. XLP Deep Sleep under 1 uA lets battery-powered HID devices like wireless presenters and BLE-HID bridges last years on a single coin cell. The extended -40C to +125C grade also supports automotive HMI and ruggedized input panels.
推荐
USB-to-Serial/I2C/SPI Bridge Adapter
The PIC24FJ32GU205-E/M4 is a strong fit for USB-to-UART, USB-to-I2C, and USB-to-SPI bridge designs because the integrated USB Device stack plus three UART, two I2C, and two SPI peripherals cover the most common bridge topologies. Running at 32 MHz/16 MIPS, the PIC24F core can service full-speed USB at 12 Mbps while polling multiple serial channels without throughput bottlenecks. The 8 KB RAM accommodates USB endpoint buffers plus protocol state machines for CDC-ACM or vendor-class firmware, while the 32 KB Flash holds the bootloader and CDC command set. Industrial PCs and embedded debugging tools benefit from the -40C to +125C extended grade for factory-floor reliability.
推荐
Portable Medical Sensor Accessory
The PIC24FJ32GU205-E/M4 suits portable medical accessories such as USB-C pulse-oximeter dongles, USB fingertip ECG probes, and Bluetooth-to-USB medical bridges because its XLP Deep Sleep current in the hundreds of nA preserves coin-cell battery life during standby, while Full-Speed USB powers and enumerates the device directly from the host port. The 12-bit ADC with internal voltage reference samples pulse or temperature waveforms at sufficient resolution for medical peripherals, and the RTCC keeps accurate timestamps during sleep. The 48-pin UQFN allows compact wearables, and the -40C to +125C range supports body-temperature environments.
推荐
Industrial Data Logger with USB Interface
For industrial data loggers that periodically sample sensors and dump logs over USB, the PIC24FJ32GU205-E/M4 offers 32 KB ECC Flash for file-system emulation plus an 8 KB RAM buffer that holds logs between host polls. Its three UART and two I2C interfaces let one MCU aggregate multiple Modbus or I2C sensors, while the 12-bit ADC captures analog channels. XLP Deep Sleep with RTCC keeps yearly idle current under 1 uA, and the -40C to +125C grade supports factory-floor and outdoor installations. The integrated USB stack also allows firmware upgrades in the field without an external programmer.
推荐
USB Smart Battery Charger
The PIC24FJ32GU205-E/M4 is well matched to USB smart battery charger designs because the integrated USB Device PHY handles BC 1.2 detection and USB-C current negotiation through firmware, while the 12-bit ADC monitors VBUS, battery voltage, and charge current in real time. The three 16-bit timers produce precise PWM for synchronous buck or linear charge control, and the 8 KB RAM handles charge-state machines and historical log buffering. The extended -40C to +125C grade supports outdoor solar chargers and EV accessory batteries. Internal bandgap and temperature sensor enable cell-protection algorithms without external components.
推荐
Automotive Interior Telemetry (USB Diagnostics Port)
The PIC24FJ32GU205-E/M4's -40C to +125C extended temperature grade makes it suitable for automotive interior telemetry hubs that expose a USB diagnostics port to technicians. The integrated USB Device stack enumerates as a composite device (CDC + vendor) so factory tooling can read CAN or LIN logs without proprietary adapters. CIPs such as the CRC engine ensure data integrity over automotive harnesses, and the 32 KB ECC Flash protects against bit flips in thermally stressed cabin environments. The 48-pin UQFN footprint fits behind a USB Type-C jack on the dashboard, and XLP Deep Sleep keeps parasitic drain below 100 uA when the vehicle is parked.
推荐
IoT Sensor Hub with USB Configuration
The PIC24FJ32GU205-E/M4 is a good fit for IoT sensor hubs that stream data over UART or sub-GHz radios and are configured over USB because the integrated USB stack allows firmware updates and parameter configuration without an external programmer. The 38 I/O control multiple sensor channels via I2C and SPI, while the 12-bit ADC reads analog sensors and battery voltage. With XLP Deep Sleep retaining 8 KB RAM at hundreds of nA, a hub sampling every few seconds can run on a 1000 mAh Li-Ion cell for over a year. The -40C to +125C grade also supports outdoor weather-station hubs.
推荐
推荐产品汇总
工程参考数据： PIC24FJ32GU205-E/M4 ——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 | PIC24FJ32GU205-I/M4 | PIC24FJ64GU205-E/M4 | PIC24FJ128GU405-I/PT | dsPIC33FJ32GP202-I/MM |
|---|---|---|---|---|---|
| Package | 48-pin UQFN (6x6 mm) | 48-pin UQFN (6x6 mm) - same | 48-pin UQFN (6x6 mm) - same | 48-pin UQFN (6x6 mm) / 48-pin TQFP | 48-pin UQFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash | 32 KB ECC | 32 KB ECC | 64 KB ECC | 128 KB ECC | 32 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 2 KB |
| USB | FS Host/Device/OTG | FS Host/Device/OTG | FS Host/Device/OTG | FS Host/Device/OTG | No USB |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 40 MHz / 20 MIPS (DSP engine) |
| Operating Temperature | -40C to +125C (E-temp) | -40C to +85C (I-temp) | -40C to +125C (E-temp) | -40C to +85C (I-temp) | -40C to +85C (I-temp) |
| Sleep Current (XLP Deep Sleep) | Hundreds of nA | Hundreds of nA | Hundreds of nA | Hundreds of nA | Higher (no XLP) |
| DSP Engine | No | No | No | No | Yes (dsPIC33) |
关键差异点
- Integrated Full-Speed USB OTG with on-chip transceiver （对比 dsPIC33FJ32GP202-I/MM)
- eXtreme Low Power (XLP) Deep Sleep in the hundreds of nA （对比 PIC24FJ32GU205-I/M4)
- 48-pin UQFN with 38 I/O （对比 PIC24FJ32GU203-E/M5)
设计说明
Decouple VDD (pin 5) with 10uF + 0.1uF X7R ceramics placed within 2 mm of the pin, and add an additional 1uF on VDDCORE (pin 45) since the internal 1.2V regulator is sensitive to load-step noise. For USB applications, VUSB3V3 (pin 18) requires a dedicated 0.47uF X7R decoupling capacitor within 2 mm of the pin to keep USB signaling compliant. VBUS (pin 17) should be tied through a 10k/1M resistor divider to an ADC-capable I/O if you need BC 1.2 current-advertising detection. All ground returns should converge at the exposed pad (pin 48 EP), which must be soldered to a continuous ground pour for thermal dissipation and return-path integrity.
Estimated: at maximum CPU activity (32 MHz / 16 MIPS, all peripherals enabled, 3.3 V VDD), core current is approximately 15 mA, dissipating ~50 mW. The 48-pin UQFN's theta_JA is around 31 C/W on a 4-layer JEDEC test board, so junction-temperature rise is ~1.5C at this load - well within the -40C to +125C envelope. In Deep Sleep with RTCC running, current drops to ~300 nA and self-heating is negligible. For designs that operate at sustained +85C ambient with active USB throughput, derate by ~30% to account for elevated leakage and CPU throttling.
Route the D+ (pin 20) and D- (pin 19) USB differential pair as a 90 ohm impedance-matched pair on the top layer directly under the UQFN, keeping the pair length-matched to within 150 mil. The USBLC6-2SC6 ESD array should be placed within 5 mm of the USB connector, with its protected lines connected directly to the D+/D- pins. The exposed thermal pad (pin 48) must have at least 9 thermal vias to the inner ground plane (0.3 mm drill, 0.5 mm pitch) to meet the 31 C/W theta_JA spec; missing vias can increase junction temperature by 20-30C at full load.
Common pitfalls when designing with the PIC24FJ32GU205-E/M4 include (1) omitting the VUSB3V3 decoupling capacitor, which causes USB enumeration failures; (2) forgetting to configure the PPS (Peripheral Pin Select) registers to map UART/SPI/I2C to specific I/O - this is required on PIC24F parts and is not done at compile time; (3) leaving the MCLR pin (pin 46) floating - always pull it up to VDD through a 10k resistor with a 100 nF cap to ground for decoupling; (4) using a 5V signal on a 3.3V I/O pin - the part is NOT 5V tolerant, so level-shift any 5V peripherals. Refer to MPLAB X IDE startup code from MCC (MPLAB Code Configurator) to avoid PPS configuration mistakes.
合规信息
RoHS and REACH compliant per Microchip product page and DigiKey SKU 13636145 listing. Lead-free (Pb-free) and halogen-free per Microchip material declaration. The -E (extended) temperature grade supports industrial and automotive interior use, but this part is NOT AEC-Q100 qualified - choose an automotive-qualified PIC24 variant if AEC-Q100 is required.
