PIC24FJ32GU202T-I/SO - 16-bit MCU 32KB Flash USB XLP | Microchip
MPN: PIC24FJ32GU202T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.92 | $2.92 |
| 10 | $2.62 | $26.20 |
| 100 | $2.32 | $232.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
PIC24FJ32GU202T-I/SO Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory (Flash), volatile working memory (RAM), and a rich set of on-chip peripherals such as timers, communication controllers, ADCs, and GPIOs. MCUs sit at the bottom of the embedded-compute hierarchy: MCU -> microcontroller -> embedded processor -> semiconductor. The PIC24F family specifically targets ultra-low-power applications and uses a 16-bit modified Harvard architecture, allowing single-cycle instruction execution and deterministic interrupt response, which is why it is preferred for real-time control and low-power sensing.
Key features of this device include 32 KB ECC Flash (11K x 24 words), 8 KB SRAM, Full-Speed USB 2.0 with on-chip transceiver and internal pull-up, a 10-bit ADC up to 500 ksps, multiple hardware UART/SPI/I2C modules, RTCC with calendar mode, and XLP sleep currents measured in the low microamp range. The on-chip USB PHY eliminates the external transceiver typically required for USB on small MCUs, reducing both BOM cost and PCB area.
In the field, the part is used in USB HID peripherals such as PC accessories, gaming input devices, low-power sensor nodes, and consumer-electronic human-interface products. The wide operating voltage (2.0 V to 3.6 V) and XLP modes also make it a strong fit for battery-powered data loggers and wearable reference designs where sleep current dominates battery life.
When designing, place a 1 uF decoupling capacitor within 5 mm of the VDD pin, route the USB DP/DM traces as a 90-ohm differential pair, and bias the unused VUSB pin per the USB section of the PIC24FJ GP2/GU2 family datasheet. Use the ICD 3 or MPLAB REAL ICE tool for in-circuit debug and MPLAB X IDE for code development.
This page synthesizes distributor stock and pricing, drop-in PIC24F alternatives, and practical design notes not assembled in the manufacturer datasheet, enabling faster sourcing and BOM decisions for USB-enabled 16-bit embedded designs.
Drop-in alternatives for PIC24FJ32GU202T-I/SO — 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 PIC24FJ32GU202T-I/SO (same form factor and footprint) — differing in Package, Operating Temperature, Program Memory (Flash), ADC, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ32GU202-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GU202T-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GU202-E/SO
✅ Drop-In✓ In Stock
$3.15 / Unit
View Datasheet →PIC24FJ64GU202-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.76 / Unit
View Datasheet →PIC24FJ32GB002T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.32 / Unit
View Datasheet →PIC24FJ32GA102T-I/SO
✅ Drop-In✓ In Stock
$2.91 / Unit
View Datasheet →PIC24FJ32GP202T-I/SO
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC24FJ32GU202T-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F (16-bit modified Harvard) |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 32 KB ECC (11K x 24) |
| Data Memory (SRAM) | 8 KB |
| USB Interface | USB 2.0 Full-Speed Host/Device/OTG with on-chip transceiver |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| ADC | 10-bit, up to 500 ksps |
| Communication Interfaces | UART, SPI, I2C |
| RTCC | Yes, with calendar mode |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 28-pin SOIC |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC24FJ32GU202T-I/SO 28-pin soic Pin Configuration Guide
Pin configuration for PIC24FJ32GU202T-I/SO (28-pin soic 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 PIC24FJ32GU202T-I/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC24FJ32GU202T-I/SO is suitable for 6 applications: USB HID Peripheral Devices, Battery-Powered Sensor Nodes, USB-to-UART/SPI/I2C Bridge, Consumer Electronics Human Interface, USB-Connected Data Loggers, Industrial Control Modules.
USB HID Peripheral Devices
The PIC24FJ32GU202T-I/SO is purpose-built for USB HID devices such as keyboards, mice, game controllers, and custom HID input peripherals. Its integrated Full-Speed USB 2.0 transceiver with internal pull-up removes the external PHY BOM cost, while the 32 KB ECC Flash and 8 KB SRAM host HID class descriptors, report buffers, and a small RTOS or polling loop. XLP sleep modes support USB suspend compliance for battery-powered HID devices, and the 28-SOIC footprint simplifies two-layer PCB designs for compact consumer peripherals. The on-chip USB suspend/resume signaling plus hardware timer capture enable precise HID polling rates without CPU overhead.
Recommended
Battery-Powered Sensor Nodes
The PIC24FJ32GU202T-I/SO fits battery-powered sensor nodes thanks to its XLP eXtreme Low Power sleep currents in the low microamp range and 2.0 V to 3.6 V operating range. Combined with the 10-bit ADC, RTCC with calendar mode, and Core Independent Peripherals (CIPs), the device can wake-and-measure on a schedule without CPU intervention, enabling multi-year battery life from a single CR2032 or 2x AA cell. The 32 KB Flash accommodates sensor fusion and store-and-forward logging, while 8 KB RAM is adequate for several hundred sample buffers. Low-cost USB connectivity enables periodic tethered data downloads when a wall charger or PC is attached.
Recommended
USB-to-UART/SPI/I2C Bridge
Engineers frequently use the PIC24FJ32GU202T-I/SO as a USB-to-UART/SPI/I2C bridge in industrial and test equipment. The integrated USB device stack plus multiple UART/SPI/I2C peripherals allow a single chip to expose legacy serial buses to a host PC over USB CDC or vendor-class endpoints. The 16 MIPS core handles enumeration, control transfers, and high-throughput streaming without breaking a sweat. Its industrial -40 C to +85 C rating suits factory automation and outdoor installations, and the 28-SOIC package is easy to hand-solder for prototype bridge dongles.
Recommended
Consumer Electronics Human Interface
For consumer HMI products such as remote controls, fitness wearables, and small appliances, the PIC24FJ32GU202T-I/SO offers USB charging-data interface, low sleep current, and a small SOIC-28 footprint. Designers can drive small OLED or segment LCDs via GPIO while reading capacitive buttons through Core Independent Peripherals. The 2.0 V to 3.6 V supply range allows direct Li-ion battery operation. With XLP modes and the RTCC, wake-on-touch or scheduled wake are straightforward to implement, and the USB port serves both charging and firmware update paths.
Recommended
USB-Connected Data Loggers
The PIC24FJ32GU202T-I/SO enables compact USB data loggers for environmental, medical, and industrial monitoring. The 32 KB Flash plus 8 KB RAM is enough to store thousands of sensor samples with timestamps from the on-chip RTCC. USB device mode allows the same port to power the logger and dump logs to a PC without extra connectors. The 10-bit ADC at 500 ksps covers most slow and medium-speed analog sensors, and the wide operating voltage range supports direct 3.3 V sensor stacks. XLP sleep modes keep idle current negligible between measurement windows.
Recommended
Industrial Control Modules
The PIC24FJ32GU202T-I/SO is suitable for small industrial control modules that benefit from a USB service port for diagnostics and firmware updates. Its hardware UART/SPI/I2C ports connect to motor drivers, sensor front-ends, or PLC I/O expanders, while USB device mode provides a maintenance interface for technicians. The -40 C to +85 C industrial temperature range handles factory environments, and the deterministic 16 MIPS core supports real-time control loops. The 28-SOIC package is straightforward to integrate into mixed-signal control boards with both analog and digital sections.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32GU202T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ32GU202-I/SO | PIC24FJ32GU202T-E/SO | PIC24FJ32GU202-E/SO | PIC24FJ64GU202-I/SO | PIC24FJ32GB002T-I/SS | PIC24FJ32GA102T-I/SO | PIC24FJ32GP202T-I/SO |
|---|---|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SSOP - same pin count, smaller body | 28-SOIC - same | 28-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 32 KB ECC | 32 KB ECC | 32 KB ECC | 32 KB ECC | 64 KB ECC | 32 KB | 32 KB | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| USB Module | Full-Speed USB 2.0 Host/Device/OTG | Full-Speed USB 2.0 Host/Device/OTG | Full-Speed USB 2.0 Host/Device/OTG | Full-Speed USB 2.0 Host/Device/OTG | Full-Speed USB 2.0 Host/Device/OTG | Full-Speed USB 2.0 Host/Device | No USB | No USB |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Maximum CPU Speed | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) |
| XLP Sleep Modes | Yes | Yes | Yes | Yes | Yes | Limited | Yes | Yes |
Key Differentiators
- Integrated Full-Speed USB 2.0 with on-chip transceiver (vs PIC24FJ32GP202T-I/SO)
- 32 KB ECC Flash for higher reliability (vs PIC24FJ32GB002T-I/SS)
- XLP ultra-low-power sleep modes in the GU2 family (vs PIC24FJ32GA102T-I/SO)
Design Notes
Place a 1 uF decoupling capacitor within 5 mm of the VDD pin and a 100 nF within 2 mm of the VDD/VSS pair. For USB applications, also place a bulk capacitor near the VUSB pin as recommended in the PIC24FJ GP2/GU2 family datasheet. The 2.0 V to 3.6 V operating range allows direct connection to 3.3 V LDO outputs or 2x AA battery stacks. Estimated: typical active current at 32 MHz is in the low milliamp range; XLP sleep current drops to the low microamp range for battery-saving applications.
Route the USB DP and DM signals as a 90-ohm differential pair with trace length matching within 150 mil. Keep the pair away from switching regulators and high-current traces to minimize EMI injection into the USB data path. Place the MCU close to the USB connector to keep the DP/DM traces short. Use a 4-layer PCB if possible, dedicating one layer to ground and one to power to reduce EMI and improve signal integrity for the USB eye pattern.
Do not omit the MCLR pull-up resistor or the internal USB pull-up configuration; both are required for proper USB enumeration. Use ICD 3 or MPLAB REAL ICE for in-circuit debugging and MPLAB X IDE for firmware development. The 'T' suffix indicates tape-and-reel packaging - confirm with your assembly house that the SOIC-28 land pattern matches the reel orientation. Estimated: typical programming/debugging connector pinout uses PGECx/PGEDx pairs as defined in the datasheet.
Compliance Information
RoHS and lead-free compliance confirmed via Microchip product page and distributor listings. AEC-Q100 qualification not applicable for industrial-grade MCU - use automotive-qualified PIC24F variants for vehicular designs.
