PIC24FJ32GP202T-I/SS - 16-bit 32MHz 32KB Flash MCU | Microchip
MPN: PIC24FJ32GP202T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.74 | $274.00 |
| 500 | $2.4 | $1,200.00 |
| 1,000 | $2.1 | $2,100.00 |
PIC24FJ32GP202T-I/SS Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, peripherals, and I/O. The PIC24F family sits in Microchip's 16-bit line between the 8-bit PIC16/PIC18 families and the 32-bit PIC32MX/dsPIC families, targeting applications that need more compute than 8-bit parts while keeping low power and small footprints. Within that family, the PIC24FJ32GP202 is a low-pin-count (28-pin) device with USB and ultra-low-power (XLP) sleep modes.
Key differentiating specifications include: 32 KB Flash (11K x 24 words) with ECC for safety, 8 KB RAM, USB 2.0 Full-Speed On-The-Go support, 21 general-purpose I/O pins, a 16-channel 10-bit ADC, four 16-bit timers, two UART, two SPI, two I2C, and a 4-channel DMA. The XLP feature cuts sleep current to a few hundred nanoamperes while preserving RAM and select peripherals, making the part suited to battery-powered designs.
Architecturally, the PIC24FJ32GP204 family uses a Modified Harvard architecture with separate program and data buses, a 16-bit data path, and DSP-enhanced instructions for signal-processing workloads. Peripherals are arranged for autonomous operation; the DMA controller and CIP blocks let time-critical events run without CPU intervention, freeing the core for application code.
Typical applications include USB peripherals (HID, CDC, vendor-key classes), portable medical sensors, low-power IoT nodes, consumer electronics with USB charging/DFU, and motor-control human-interface devices. The 28-pin SSOP footprint simplifies layout on compact two-layer boards.
When designing, plan pin allocation early: USB D+/D- pins, the dedicated 32 kHz crystal pins, and at least one ICSP/PGECx/PGEDx pair must be reserved. Decouple VDD/VUSB/VBAT with 100 nF ceramics placed within 5 mm of each pin pair.
This page synthesizes distributor stock, drop-in Microchip cross-references, and practical design notes that go beyond the manufacturer datasheet.
Drop-in alternatives for PIC24FJ32GP202T-I/SS — 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 PIC24FJ32GP202T-I/SS (same form factor and footprint) — differing in Package, Operating Temperature, ADC, Core Architecture, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ32GP202-I/SS
✅ Drop-In✓ In Stock
$2.62 / Unit
View Datasheet →PIC24FJ32GP202T-I/SO
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC24FJ32GP202T-E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GA002T-I/SO
✅ Drop-In✓ In Stock
$3.32 / Unit
View Datasheet →PIC24FJ32GB002T-I/SS
✅ Drop-In✓ In Stock
$2.32 / Unit
View Datasheet →PIC24FJ32GP202T-I/SS Maximum Ratings & Electrical Characteristics
| Core | PIC24F (16-bit) |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 32 KB (11K x 24) with ECC |
| Data RAM | 8 KB |
| Package | 28-pin SSOP |
| Operating Temperature | -40 C to +85 C (Industrial) |
| USB Interface | USB 2.0 Full-Speed Host/Device/OTG |
| GPIO Count | 21 |
| ADC | 10-bit, 16-channel |
| Timers | 4 x 16-bit |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| DMA Channels | 4 |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC24FJ32GP202T-I/SS Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | RA0 — Port A bit 0 / analog input AN0 |
| Pin 3 | RA1 — Port A bit 1 / analog input AN1 |
| Pin 4 | RB0 — Port B bit 0 / analog input AN2 |
| Pin 5 | RB1 — Port B bit 1 / analog input AN3 |
| Pin 6 | RB2 — Port B bit 2 / analog input AN4 |
| Pin 7 | RB3 — Port B bit 3 / analog input AN5 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1 — Crystal oscillator input |
| Pin 10 | OSC2 — Crystal oscillator output |
| Pin 11 | RB4 — Port B bit 4 / analog input AN6 |
| Pin 12 | RB5 — Port B bit 5 / analog input AN7 |
| Pin 13 | RB6 — Port B bit 6 / PGEC1 (ICSP clock) |
| Pin 14 | RB7 — Port B bit 7 / PGED1 (ICSP data) |
| Pin 15 | VUSB — USB transceiver supply (3.3V typical) |
| Pin 16 | D+ — USB D+ data line |
| Pin 17 | D- — USB D- data line |
| Pin 18 | RA2 — Port A bit 2 |
| Pin 19 | RA3 — Port A bit 3 |
| Pin 20 | VDD — Positive supply voltage |
| Pin 21 | RA4 — Port A bit 4 |
| Pin 22 | RA5 — Port A bit 5 |
| Pin 23 | RA6 — Port A bit 6 |
| Pin 24 | RA7 — Port A bit 7 |
| Pin 25 | RC0 — Port C bit 0 |
| Pin 26 | RC1 — Port C bit 1 |
| Pin 27 | RC2 — Port C bit 2 |
| Pin 28 | RC3 — Port C bit 3 |
Typical Applications
PIC24FJ32GP202T-I/SS is suitable for 6 applications: USB HID Peripheral Devices, Battery-Powered IoT Sensor Nodes, Portable Medical Measurement Devices, Industrial USB-to-UART/SPI Bridge, Consumer Audio/Visual Remote Controls, USB-Connected Data Loggers.
USB HID Peripheral Devices
The PIC24FJ32GP202T-I/SS is well-suited to USB Human Interface Devices such as keyboards, mice, custom HID controllers, and barcode scanners because of its integrated Full-Speed USB 2.0 OTG controller with on-chip transceiver. The 32 KB ECC Flash is sufficient for USB HID class drivers plus user-defined report descriptors, and the 16 MIPS core delivers the throughput required to keep interrupt latency under the USB 1 ms frame interval. Placed on a USB cable or dongle, the part eliminates the need for an external PHY; with 21 GPIO exposed on the 28-SSOP, designers can drive keys, LEDs, and sensors directly while leveraging Microchip's free USB stack.
Recommended
Battery-Powered IoT Sensor Nodes
With XLP sleep currents in the few-hundred-nanoampere range and 8 KB of retention RAM, the PIC24FJ32GP202T-I/SS fits wireless sensor nodes that wake briefly, transmit, and sleep. The 16-channel 10-bit ADC plus 4-channel DMA enables low-CPU-overhead periodic sampling of temperature, battery voltage, and external sensors. Designers can pair this MCU with a sub-GHz or BLE module over UART/SPI, using the USB port for firmware DFU updates when the device is plugged in for charging. The 28-SSOP footprint simplifies two-layer PCB layouts typical of coin-cell-powered nodes.
Recommended
Portable Medical Measurement Devices
The PIC24FJ32GP202T-I/SS supports portable medical devices such as pulse oximeters, glucose meters, and handheld spirometers that demand low noise, USB data transfer, and long battery life. The ECC Flash improves reliability in safety-related applications, while the 10-bit ADC and DMA combination allows continuous sensor sampling without CPU intervention. USB Full-Speed connectivity enables patient data uploads to a PC-based analysis tool, replacing legacy serial ports. Industrial -40 C to +85 C temperature rating supports clinical and home-care environments.
Recommended
Industrial USB-to-UART/SPI Bridge
Using the integrated USB 2.0 Full-Speed controller and the dual UART/SPI peripherals, the PIC24FJ32GP202T-I/SS implements compact industrial USB bridges that translate between USB CDC and RS-232/RS-485 or SPI peripherals. The 32 MHz core sustains 12 Mbps USB traffic, while 8 KB of RAM accommodates double-buffered CDC streams. The industrial temperature grade and ECC Flash suit factory-floor equipment where bit-flip robustness matters. The 28-SSOP package is small enough to integrate directly into a connector shell.
Recommended
Consumer Audio/Visual Remote Controls
Consumer IR/RF remote controls, presentation clickers, and AV controllers benefit from the PIC24FJ32GP202T-I/SS's USB DFU capability, low power, and small footprint. Designers can load HID-class firmware for media-key transport over USB while supporting a low-power standby mode when the remote is idle. The 21 GPIO pins drive IR LEDs, push-buttons, and indicator LEDs; the 4 timers generate accurate carrier frequencies and debounce intervals.
Recommended
USB-Connected Data Loggers
The PIC24FJ32GP202T-I/SS is suitable for portable data loggers - environmental monitors, asset trackers, and instrumentation dongles - that record sensor data to RAM and dump it over USB. The 8 KB RAM plus DMA enables streaming data acquisition while the USB stack concurrently services bulk transfer requests. ECC Flash stores calibration tables and configuration; XLP sleep modes extend battery life between logging sessions. The 28-SSOP form factor drops into compact sealed enclosures used for outdoor sensor pods.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32GP202T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ32GP202-I/SS | PIC24FJ32GP202T-I/SO | PIC24FJ32GP202T-E/SS | PIC24FJ32GA002T-I/SO | PIC24FJ32GB002T-I/SS |
|---|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SOIC - same pin count, wider body | 28-SSOP - same | 28-SOIC - same pin count, no USB | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Speed | PIC24F / 32 MHz / 16 MIPS | PIC24F / 32 MHz / 16 MIPS | PIC24F / 32 MHz / 16 MIPS | PIC24F / 32 MHz / 16 MIPS | PIC24F / 32 MHz / 16 MIPS | PIC24F / 32 MHz / 16 MIPS |
| Program Flash | 32 KB ECC | 32 KB ECC | 32 KB ECC | 32 KB ECC | 32 KB ECC | 32 KB ECC |
| USB Interface | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | No USB peripheral | USB 2.0 FS OTG + touch |
| Temperature Grade | Industrial -40 to +85 C | Industrial -40 to +85 C | Industrial -40 to +85 C | Extended -40 to +125 C | Industrial -40 to +85 C | Industrial -40 to +85 C |
| Packaging Format | Tape & Reel | Tray/Tube | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel |
Key Differentiators
- Integrated Full-Speed USB 2.0 OTG with on-chip transceiver (vs PIC24FJ32GA002T-I/SO)
- Industrial -40 to +85 C temperature grade with tape-and-reel packaging (vs PIC24FJ32GP202-E/SS)
- Same die as -I/SS in SOIC-28 package option (vs PIC24FJ32GP202T-I/SO)
Design Notes
Decouple VDD, VUSB, and (if present) VBAT each with a 100 nF X7R ceramic placed within 5 mm of the respective pin pair. Add a bulk 4.7 uF tantalum or ceramic near the VDD pin. For USB applications, VUSB must be tied to 3.3V through an internal regulator; connect a 1 uF capacitor on VUSB per Microchip reference designs.
Keep the 32.768 kHz watch-crystal traces short and symmetric; route them over a continuous ground pour and guard them with ground traces to minimize capacitive coupling. The USB D+/D- traces should be 90 ohm differential, length-matched within 2 mm, and kept clear of switching signals to preserve signal-integrity margins.
Do not load code into ECC Flash without enabling ECC checking in the NVMCON register; uncached reads will report soft errors that are actually correctable. When migrating from PIC24FJ32GP202 to PIC24FJ32GA002, remember the GA002 variant lacks USB - reassign the D+/D-/VUSB pins to GPIO to avoid floating inputs that can draw parasitic current.
Compliance Information
RoHS and REACH compliance per Microchip product declaration. Industrial temperature grade only; no AEC-Q100 automotive variant available in this part number.
