PIC24FJ32GU203T-I/M5 - 32KB USB MCU, 36-UQFN | Microchip
MPN: PIC24FJ32GU203T-I/M5 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.18 | $218.00 |
| 500 | $1.92 | $960.00 |
| 1,000 | $1.68 | $1,680.00 |
PIC24FJ32GU203T-I/M5 Overview
An MCU (Microcontroller Unit) is a single-chip computer that integrates a CPU core, program memory, working RAM, and a configurable peripheral set around an internal bus. The PIC24F family uses a 16-bit modified Harvard architecture with a wide 24-bit instruction word, giving it higher code density than 8-bit MCUs while retaining deterministic interrupt response. Within Microchip's portfolio, the PIC24F sits between the 8-bit PIC18 and the 32-bit PIC32, targeting low-power connected applications with USB. Key hypernyms: MCU -> microcontroller -> embedded controller -> semiconductor IC.
Key features include 32 MHz maximum CPU clock, 32 KB (11K x 24) ECC Flash for code and data storage, 8 KB RAM, and a 2.0V to 3.6V VDD operating range suited to single-cell Li-ion or 3.3V regulated rails. The device integrates 2x I2C, 2x SPI, 2x UART, 1x USB FS Host/Device/OTG, 5x MCCP/SCCP timers, 6x general-purpose timers, 3x analog comparators, 4x Configurable Logic Cells (CLC), and 2x DMA channels. With XLP technology, sleep currents drop to a few hundred nanoamps while retaining state, enabling years of battery life on coin cells.
Typical applications include USB HID peripherals such as keyboards, mice, and game controllers, USB-to-UART bridges, battery-powered IoT sensor nodes with USB charging, wearable health monitors, and low-power human-interface devices. The compact 36-UQFN 5x5 mm footprint makes it well-suited to space-constrained consumer and industrial designs.
When designing with this part, place the 0.1 uF VDD decoupling capacitor within 3 mm of the VDD pin and provide a 4.7 uF bulk capacitor on the USB VBUS rail if the device is bus-powered. Ensure the 32.768 kHz secondary oscillator load capacitors are matched to the crystal manufacturer's CL specification to avoid start-up failures.
This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC24FJ GP/GU family, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC24FJ32GU203T-I/M5 — 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 PIC24FJ32GU203T-I/M5 (same form factor and footprint) — differing in Package, Core Architecture, Operating Temperature, RAM, Operating Voltage Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ32GP203T-I/M5
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →PIC24FJ64GU203-I/M5
✅ Drop-In✓ In Stock
$2.85 / Unit
View Datasheet →PIC24FJ32GU203-I/M5
✅ Drop-In✓ In Stock
$2.13 / Unit
View Datasheet →PIC24FJ128GU406-I/MR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.42 / Unit
View Datasheet →PIC24FJ32GU203T-I/M5 Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F 16-bit modified Harvard |
| CPU Core | PIC24F |
| Maximum CPU Clock | 32 MHz |
| Performance | 16 MIPS |
| Program Flash Memory | 32 KB (11K x 24) with ECC |
| RAM | 8 KB |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| I/O Pins | 26 |
| USB Interface | USB 2.0 Full-Speed Host/Device/OTG |
| I2C | 2 |
| SPI | 2 |
| UART | 2 |
| Timers (MCCP/SCCP) | 5 |
| General-Purpose Timers | 6 |
| Analog Comparators | 3 |
| Configurable Logic Cells (CLC) | 4 |
| DMA Channels | 2 |
| Package | 36-UQFN 5x5 mm |
| Operating Temperature | -40C to +85C (industrial) |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Delivery Form | Tape & Reel |
PIC24FJ32GU203T-I/M5 36-uqfn 5x5 mm Pin Configuration Guide
Pin configuration for PIC24FJ32GU203T-I/M5 (36-uqfn 5x5 mm package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC24FJ32GU203T-I/M5.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC24FJ32GU203T-I/M5 is suitable for 6 applications: USB HID Peripherals (Keyboard/Mouse/Gamepad), USB-to-UART/I2C/SPI Bridge Dongles, Battery-Powered IoT Sensor Nodes, Wearable Health & Fitness Devices, Industrial USB Diagnostic Tools, USB Host Mass-Storage Readers.
USB HID Peripherals (Keyboard/Mouse/Gamepad)
The PIC24FJ32GU203T-I/M5 is purpose-built for low-cost USB HID peripherals where the integrated USB 2.0 FS Host/Device/OTG controller eliminates external PHY components. With 32 KB of ECC Flash and 16 MIPS throughput, it runs Microchip's USB HID stack and composite descriptors comfortably, while XLP nanoamp sleep modes let battery-powered mice sleep between user inputs for over a year on a single AA cell. The 36-UQFN 5x5 mm footprint drops into compact consumer peripherals without PCB rework.
Recommended
USB-to-UART/I2C/SPI Bridge Dongles
The PIC24FJ32GU203T-I/M5's USB 2.0 FS device plus dual UART, I2C, and SPI peripherals makes it ideal for protocol-bridge dongles that connect legacy serial devices to modern PCs. The 8 KB RAM handles full-speed USB buffering and CDC command queues, while the 32 KB Flash is sufficient for class-compliant CDC plus vendor commands. Industrial temperature grade (-40C to +85C) ensures reliable operation in factory-floor diagnostic tools and lab instrumentation adapters.
Recommended
Battery-Powered IoT Sensor Nodes
XLP technology on the PIC24FJ32GU203T-I/M5 pulls sleep current down to a few hundred nanoamps while retaining RAM and the RTCC, enabling years of operation from coin cells. The MCU wakes from sleep via the RTCC or an interrupt on RB0/RB1, samples a sensor through I2C or SPI, and returns to sleep - all without an external PMIC. Its 2.0V minimum VDD supports direct connection to a single CR2032 cell, removing the need for boost regulators in compact wireless sensor designs.
Recommended
Wearable Health & Fitness Devices
Wearable fitness bands benefit from the PIC24FJ32GU203T-I/M5's combination of low power, USB device charging interface, and rich peripheral set. The integrated USB 2.0 FS port handles charging and data sync without an external controller, while DMA and CLCs offload sensor-fusion math from the CPU to maximize battery life. The 36-UQFN 5x5 mm footprint accommodates wristband form factors, and the 26 GPIO allow direct connection to PPG, accelerometer, and BLE modules.
Recommended
Industrial USB Diagnostic Tools
Industrial environments demand the -40C to +85C industrial temperature grade offered by the 'I' suffix on the PIC24FJ32GU203T-I/M5. Field-service technicians rely on USB-connected diagnostic tools (CAN sniffers, sensor calibrators, protocol analyzers) that must survive factory-floor temperatures. The MCU's 2.0V-3.6V VDD tolerates noisy 24V-derived rails after regulation, and 4 CLCs implement glue logic that would otherwise require a separate CPLD on the diagnostic board.
Recommended
USB Host Mass-Storage Readers
The PIC24FJ32GU203T-I/M5's USB 2.0 FS Host capability plus OTG support enables embedded designs that read USB flash drives for data logging, firmware update, or media playback. The 32 KB Flash accommodates Microchip's USB Host mass-storage stack plus the FAT file-system library, while 8 KB RAM holds sector buffers for streaming reads. With 5x CLCs and DMA, the CPU stays free to handle UI updates while the USB stack operates.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32GU203T-I/M5 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ32GP203T-I/M5 | PIC24FJ64GU203-I/M5 | PIC24FJ32GU203-I/M5 |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 36-UQFN 5x5 (M5) | 36-UQFN 5x5 (M5) | 36-UQFN 5x5 (M5) | 36-UQFN 5x5 (M5) |
| CPU Core | PIC24F 16-bit, 32 MHz | PIC24F 16-bit, 32 MHz | PIC24F 16-bit, 32 MHz | PIC24F 16-bit, 32 MHz |
| Flash Memory | 32 KB ECC | 32 KB ECC | 64 KB ECC | 32 KB ECC |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB |
| USB 2.0 FS Host/Device/OTG | Yes | No | Yes | Yes |
| I/O Pins | 26 | 26 | 26 | 26 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Delivery Form | Tape & Reel | Tape & Reel | Tray | Tray |
Key Differentiators
- Integrated USB 2.0 FS Host/Device/OTG with internal transceiver (vs PIC24FJ32GP203T-I/M5)
- 32 KB ECC Flash for both program and data (vs PIC24FJ32GU202-I/ML)
- XLP technology with sub-microamp sleep retention (vs PIC24FJ32GA104-I/ML)
Design Notes
Place a 0.1 uF decoupling capacitor within 3 mm of each VDD/AVDD pin and a single 4.7 uF bulk capacitor near the device. For USB bus-powered designs, add a 4.7 uF capacitor on VBUS per the USB 2.0 specification. The PIC24FJ32GU203T-I/M5's internal 3.3V LDO powers the USB transceiver from VBUS when bus-powered, but VDD must still be present for the core logic to operate.
USB firmware development requires the PIC24F USB stack from Microchip's MLA or Harmony framework. Do not skip configuration-bit setup for the primary oscillator and USB-related PPS mappings; missing PLL configuration results in USB enumeration failure even though the core runs. Source: Microchip PIC24FJ GP2/GU2 family datasheet.
Estimated: at 32 MHz / 3.3V with all peripherals active, the core draws under 10 mA, dissipating about 33 mW. The 36-UQFN 5x5 mm package's exposed pad must be soldered to a 4 mm x 4 mm copper pour with at least 6 thermal vias to keep junction temperature below 85C in enclosed USB peripherals.
Route the USB D+/D- pair as a 90-ohm differential trace with matched length and continuous ground reference. Keep the traces under 50 mm total length per USB 2.0 FS specification, and avoid routing them near switching nodes like DC-DC converters or high-current signals. Place the 27-ohm series resistors on D+/D- close to the MCU side.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified - choose PIC24FJ automotive-qualified variants for vehicle applications.
