PIC24FJ64GU205-I/PT - 16-bit 32MHz 64KB Flash USB MCU | Microchip
MPN: PIC24FJ64GU205-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.21 | $42.10 |
| 100 | $3.75 | $375.00 |
| 500 | $3.39 | $1,695.00 |
| 1,000 | $3.02 | $3,020.00 |
PIC24FJ64GU205-I/PT Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), working memory (RAM), and a rich set of peripherals (ADC, timers, communication interfaces, I/O). The PIC24FJ family sits in the 16-bit MCU hierarchy between 8-bit PIC16/PIC18 devices and 32-bit PIC32 devices, offering higher performance than 8-bit cores while keeping deterministic interrupt latency and a simple C-friendly instruction set. eXtreme Low-Power (XLP) technology is Microchip's branding for nanoWatt-class sleep modes that allow battery-powered products to extend operating life.
Key features of the PIC24FJ64GU205 include integrated USB 2.0 full-speed transceiver and PHY (eliminating an external USB PHY), 64 KB Flash with Error-Correcting Code for improved reliability, 8 KB SRAM, multiple low-power sleep modes down to nanoWatt levels, multiple 16-bit timers, and a 10/12-bit ADC. The 48-pin TQFP package provides more I/O than smaller QFN/SSOP variants of the same family while remaining compatible with hand-soldered prototype boards.
Architecturally, the PIC24FJ64GU205 uses the Microchip 16-bit modified Harvard core with a 24-bit instruction word and 16-bit data path, allowing single-cycle 16x16 MAC operations. The on-chip regulator supports 2.0–3.6 V single-supply operation, simplifying battery designs.
Typical applications include USB HID devices, USB data loggers, portable medical monitors, consumer electronics with USB charging/communication, and low-power sensor nodes. The combination of integrated USB and XLP makes it particularly attractive for self-powered USB peripherals.
When designing with this MCU, ensure the USB D+/D− traces are routed as a 90 Ω differential pair, the VUSB pin has the correct decoupling, and the integrated 3.3 V regulator output is bypassed per the manufacturer's guidelines.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC24FJ64GU205-I/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC24FJ64GU205-I/PT (same form factor and footprint) — differing in Core Architecture, Timers, ADC, Operating Temperature, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GP205-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.52 / Unit
View Datasheet →PIC24FJ64GU205-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ128GU405-I/PT
✅ Drop-In✓ In Stock
$3.25 / Unit
View Datasheet →PIC24FJ256GU405-I/PT
✅ Drop-In✓ In Stock
$4.75 / Unit
View Datasheet →PIC24FJ64GU205-I/M4
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC24FJ64GU205-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 16-bit modified Harvard |
| Family | PIC24FJ XLP |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 64 KB (22K x 24 instructions) |
| RAM | 8 KB |
| Flash ECC | Yes |
| USB Interface | USB 2.0 Full-Speed (12 Mbps), integrated PHY |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| Operating Temperature | -40 °C to +85 °C (industrial) |
| Package | 48-pin TQFP (7x7 mm) |
| Mounting Type | Surface Mount |
| Low-Power Mode | nanoWatt XLP (per Microchip XLP family spec) |
| RoHS Status | Compliant (per Microchip product page) |
PIC24FJ64GU205-I/PT Pin Configuration
| Pin 1 | RA0 — General-purpose I/O / analog input |
| Pin 2 | RA1 — General-purpose I/O / analog input |
| Pin 3 | RA2 — General-purpose I/O / analog input |
| Pin 4 | RA3 — General-purpose I/O / analog input |
| Pin 5 | RA4 — General-purpose I/O |
| Pin 6 | RA5 — General-purpose I/O |
| Pin 7 | RA6 — General-purpose I/O |
| Pin 8 | RA7 — General-purpose I/O |
| Pin 9 | VSS — Ground |
| Pin 10 | VDD — Positive supply (2.0–3.6 V) |
| Pin 11 | RB0 — General-purpose I/O / programming |
| Pin 12 | RB1 — General-purpose I/O / programming |
| Pin 13 | RB2 — General-purpose I/O |
| Pin 14 | RB3 — General-purpose I/O |
| Pin 15 | RB4 — General-purpose I/O |
| Pin 16 | RB5 — General-purpose I/O |
| Pin 17 | RB6 — General-purpose I/O / ICSCLK |
| Pin 18 | RB7 — General-purpose I/O / ICSDAT |
| Pin 19 | VSS — Ground |
| Pin 20 | VDD — Positive supply (2.0–3.6 V) |
| Pin 21 | RC0 — General-purpose I/O |
| Pin 22 | RC1 — General-purpose I/O |
| Pin 23 | RC2 — General-purpose I/O |
| Pin 24 | RC3 — General-purpose I/O |
| Pin 25 | RC4 — General-purpose I/O |
| Pin 26 | RC5 — General-purpose I/O |
| Pin 27 | RC6 — General-purpose I/O |
| Pin 28 | RC7 — General-purpose I/O |
| Pin 29 | VUSB — USB 3.3 V regulator output |
| Pin 30 | VBUS — USB VBUS sense input |
| Pin 31 | D+ — USB D+ data line |
| Pin 32 | D- — USB D- data line |
| Pin 33 | VSS — Ground |
| Pin 34 | RD0 — General-purpose I/O |
| Pin 35 | RD1 — General-purpose I/O |
| Pin 36 | RD2 — General-purpose I/O |
| Pin 37 | RD3 — General-purpose I/O |
| Pin 38 | RD4 — General-purpose I/O |
| Pin 39 | RD5 — General-purpose I/O |
| Pin 40 | RD6 — General-purpose I/O |
| Pin 41 | RD7 — General-purpose I/O |
| Pin 42 | RE0 — General-purpose I/O |
| Pin 43 | RE1 — General-purpose I/O |
| Pin 44 | RF0 — General-purpose I/O / analog reference |
| Pin 45 | RF1 — General-purpose I/O |
| Pin 46 | AVSS — Analog ground |
| Pin 47 | AVDD — Analog positive supply |
| Pin 48 | MCLR — Master clear reset (active-low) |
Typical Applications
PIC24FJ64GU205-I/PT is suitable for 6 applications: USB HID Peripherals, Portable USB Data Loggers, Portable Medical Monitors, Consumer USB Charging Devices, Industrial Sensor Nodes with USB Diagnostics, USB Educational / Development Platforms.
USB HID Peripherals
The PIC24FJ64GU205-I/PT is purpose-built for USB Human Interface Devices (HID) such as keyboards, mice, game controllers, and custom input devices. Its integrated USB 2.0 Full-Speed PHY eliminates the need for an external USB transceiver, reducing BOM cost and PCB area. With 64 KB of Flash, the part can host Microchip's free USB HID bootloader plus a full HID report descriptor and application logic. The 32 MHz core provides sufficient headroom for HID polling at 1 ms intervals while still handling button debouncing, LED driving, and I/O scanning. The industrial temperature grade ensures operation in office, automotive cabin, and factory environments.
Recommended
Portable USB Data Loggers
Portable USB data loggers benefit from the PIC24FJ64GU205-I/PT's combination of integrated USB, large 64 KB Flash for log buffering, and nanoWatt XLP sleep modes that allow multi-year battery life. The 8 KB SRAM supports temporary sample buffers before flushing to Flash, while the integrated USB enables instant data download when the user plugs the device in. The 32 MHz CPU can timestamp events with microsecond resolution using the on-chip 16-bit timer. Industrial temperature grade supports outdoor or in-vehicle data acquisition. The 48-pin TQFP package provides ample I/O for analog sensor inputs, SD card interfaces, or external RTC chips.
Recommended
Portable Medical Monitors
Portable medical monitors such as pulse oximeters, glucose meters, and blood pressure cuffs require USB connectivity for charging and data sync, plus extreme low-power operation for battery life. The PIC24FJ64GU205-I/PT delivers both via integrated USB and XLP nanoWatt sleep modes that drop current consumption to under 1 µA in deep sleep. The 16-bit architecture simplifies fixed-point DSP for sensor signal conditioning, while 64 KB Flash holds both the USB stack and application firmware. The industrial temperature range supports typical medical-device operating conditions. The 48-pin TQFP allows routing to multiple sensor analog channels and a small OLED or LCD display.
Recommended
Consumer USB Charging Devices
USB-connected consumer devices such as smart wearables, fitness trackers, and Bluetooth speakers can use the PIC24FJ64GU205-I/PT as the main controller with USB charging and communication. The integrated USB Full-Speed interface handles both battery charging (via USB BC 1.2 signaling) and data exchange with host PCs or phones. The XLP low-power modes extend standby time to weeks or months between charges. With 64 KB Flash and 8 KB RAM, the part can run a real-time operating system or a simple state-machine firmware with USB stack, sensor hub, and BLE command processor. The 7x7 mm TQFP package fits compact wearable form factors.
Recommended
Industrial Sensor Nodes with USB Diagnostics
Industrial sensor nodes such as environmental monitors, predictive-maintenance vibration sensors, and process-control transducers benefit from the PIC24FJ64GU205-I/PT's USB diagnostics port for field configuration and firmware updates. The integrated USB allows technicians to plug a laptop directly into the sensor for parameter tuning, log retrieval, or firmware reflashing without specialized programmers. The 16-bit core runs PID loops and FFT analysis on vibration data, while 64 KB Flash holds the firmware plus a USB bootloader. Industrial temperature grade and nanoWatt XLP modes suit 4–20 mA loop-powered or battery-powered field deployments.
Recommended
USB Educational / Development Platforms
The PIC24FJ64GU205-I/PT serves as an excellent teaching and prototyping platform for embedded-systems courses, hobbyist projects, and Maker applications. The PIC24FJ Curiosity Nano development board (EV10K72A) uses this exact MCU, providing built-in programmer/debugger, USB virtual COM port, and breadboard-friendly headers at low cost. Students learn USB stack integration, interrupt-driven programming, and low-power design on a real industrial MCU rather than a toy processor. The 48-pin TQFP package offers enough I/O for typical course labs (LEDs, buttons, sensors, UART, SPI, I2C). The free MPLAB X IDE and XC16 compiler remove licensing barriers for classroom use.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GU205-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GP205-I/PT | PIC24FJ64GU205-E/PT | PIC24FJ128GU405-I/PT | PIC24FJ256GU405-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-pin TQFP (7x7) | 48-pin TQFP (7x7) - same | 48-pin TQFP (7x7) - same | 48-pin TQFP (7x7) - same | 48-pin TQFP (7x7) - same |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| Flash | 64 KB | 64 KB | 64 KB | 128 KB | 256 KB |
| RAM | 8 KB | 8 KB | 8 KB | 16 KB | 32 KB |
| Integrated USB | Yes (USB 2.0 FS) | No | Yes (USB 2.0 FS) | Yes (USB 2.0 FS) | Yes (USB 2.0 FS) |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +125 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| Low-Power Technology | XLP nanoWatt | XLP nanoWatt | XLP nanoWatt | XLP nanoWatt | XLP nanoWatt |
Key Differentiators
- Integrated USB 2.0 Full-Speed PHY eliminates external transceiver cost (vs PIC24FJ64GP205-I/PT)
- Same-die extended-temperature variant available for industrial/automotive (vs PIC24FJ64GU205-E/PT)
- Lower pin count and smaller package vs. PIC24FJ128/256 family (vs PIC24FJ256GU405-I/PT)
Design Notes
USB D+ and D- must be routed as a 90 Ω differential pair with matched length (±150 mil) and continuous reference ground plane beneath. Place the VUSB decoupling capacitor (typically 220 nF) as close to the VUSB pin as possible, with a wide trace to VDD. Keep digital signal traces away from the USB pair to minimize crosstalk. The D+/D- traces should not cross any split in the ground plane.
The PIC24FJ64GU205 integrates a 3.3 V LDO regulator that powers the USB transceiver from the internal VUSB pin. According to the Microchip datasheet, VUSB must be connected to VDD via a capacitor, and VBUS sensing is required for self-powered designs to detect USB attach/detach events. For bus-powered designs, connect VBUS to the USB 5 V through a regulator or voltage divider to the 3.3 V-tolerant sense pin.
Place the 48-pin TQFP decoupling network (one 100 nF per VDD pin pair, plus a single 10 µF bulk) within 5 mm of the MCU. The AVDD/AVSS analog supply pins should be filtered with a ferrite bead or 10 Ω resistor and a 10 µF + 100 nF capacitor pair to isolate analog noise from the digital core. Use a star-ground topology for analog and digital ground returns converging at the MCU's VSS pin.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified for automotive - use automotive-graded PIC24FJ variants if required. Lead-free (Pb-free) reflow profile per JEDEC J-STD-020.
