PIC24FJ32GP202T-I/SO - 16-bit 32MHz 32KB Flash MCU w/ USB | Microchip
MPN: PIC24FJ32GP202T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.18 | $3.18 |
| 10 | $2.91 | $29.10 |
| 100 | $2.55 | $255.00 |
| 500 | $2.27 | $1,135.00 |
| 1,000 | $2.04 | $2,040.00 |
| 1,600 | $1.92 | $3,072.00 |
PIC24FJ32GP202T-I/SO Overview
A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory (Flash/ROM), data memory (RAM), and a rich set of peripherals (timers, ADC, communication blocks, I/O) on a single die. The 16-bit class sits between 8-bit AVR/PIC-MCU parts and 32-bit ARM Cortex-M devices, offering a balance of code density, deterministic interrupt latency, and richer peripheral integration than 8-bit cores. PIC24F parts in particular target low-power, mixed-signal, USB-equipped embedded designs where 32-bit performance is not required.
Key features of the PIC24FJ32GP202T-I/SO include 16 MIPS execution throughput at 32MHz, hardware CT-only encoding (ECC) on Flash for improved reliability in harsh environments, 21 general-purpose I/O pins, an integrated Full-Speed USB transceiver (no external PHY required), a 10/12-bit ADC, multiple Enhanced Compare/PWM modules, and configurable logic cells. The 28-SOIC package suits hand-soldered prototypes and through-hole-style manufacturing flows while still offering all peripheral capability of the larger pin-count siblings.
Architecture-wise, the part uses a modified Harvard bus with separate instruction and data paths, a 16-element register file, and CIP blocks that operate independently of the CPU. The XLP technology achieves deep-sleep retention modes drawing only a few hundred nanoamps while preserving RAM and interrupt context, enabling coin-cell or energy-harvesting powered designs.
Typical applications include USB HID/CDC peripherals (keyboards, custom sensors, debug probes), low-power IoT sensor nodes, USB battery chargers, and industrial data-loggers. The combination of native USB, ECC Flash, and XLP sleep modes makes this part well-suited to connected battery-powered devices that must wake, transmit, and sleep efficiently.
When designing with this MCU, allocate careful PCB real-estate around the USB DP/DM lines (matched 90 ohm differential, common-mode choke if EMI is a concern), and ensure the 3.3V LDO can source the USB inrush current during hot-plug events. Decoupling should include a 100nF ceramic on every VDD pin plus a bulk 4.7uF near the package.
This page synthesizes distributor pricing, drop-in PIC24F alternatives, and practical low-power design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC24FJ32GP202T-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 PIC24FJ32GP202T-I/SO (same form factor and footprint) — differing in ADC, Package, Program Memory (Flash), Timers, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ32GP202-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GA102-I/SO
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →PIC24FJ32GB002-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GA002-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GP202T-I/SS
✅ Drop-In✓ In Stock
$2.1 / Unit
View Datasheet →PIC24FJ32GP202T-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F (16-bit modified Harvard) |
| Program Memory (Flash) | 32 KB (11K x 24 words) |
| Data Memory (RAM) | 8 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| USB | Full-Speed USB 2.0 Host/Device/OTG (integrated transceiver) |
| Number of I/O Pins | 21 |
| ADC | 10/12-bit SAR |
| Timers | 5 x 16-bit (Timer1-Timer5) |
| Package | 28-pin SOIC (SO) |
| Operating Temperature | -40C to +85C (Industrial) |
| Flash ECC | Yes (Error-Correcting Code) |
| Sleep Current (XLP) | Hundreds of nA (per family datasheet) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel |
| RoHS Status | Compliant |
PIC24FJ32GP202T-I/SO Pin Configuration
| Pin 1 | RA0 — GPIO / analog input / CTMU |
| Pin 2 | RA1 — GPIO / analog input / CTMU |
| Pin 3 | RA2 — GPIO / analog input / reference voltage |
| Pin 4 | RA3 — GPIO / analog input |
| Pin 5 | RA4 — GPIO / SOSCO crystal output |
| Pin 6 | RA5 — GPIO / SOSCI crystal input |
| Pin 7 | RA6 — GPIO / oscillator |
| Pin 8 | VSS — Ground |
| Pin 9 | RA7 — GPIO |
| Pin 10 | RB0 — GPIO / programming |
| Pin 11 | RB1 — GPIO |
| Pin 12 | RB2 — GPIO / USB enable |
| Pin 13 | VDD — Positive supply (2.0V-3.6V) |
| Pin 14 | RB3 — GPIO |
| Pin 15 | RB4 — GPIO / SDA |
| Pin 16 | RB5 — GPIO / SCL |
| Pin 17 | RB6 — GPIO / ICS PGC clock |
| Pin 18 | RB7 — GPIO / ICS PGD data |
| Pin 19 | VSS — Ground |
| Pin 20 | RC0 — GPIO |
| Pin 21 | RC1 — GPIO |
| Pin 22 | RC2 — GPIO |
| Pin 23 | RC3 — GPIO / SCL1 |
| Pin 24 | RC4 — GPIO / SDA1 |
| Pin 25 | D- — USB D- data line |
| Pin 26 | D+ — USB D+ data line |
| Pin 27 | VUSB — USB transceiver supply (3.3V regulated) |
| Pin 28 | VDD — Positive supply (2.0V-3.6V) |
Typical Applications
PIC24FJ32GP202T-I/SO is suitable for 6 applications: USB HID Peripheral Device, Low-Power IoT Sensor Node, Industrial Data Logger with USB Dump, USB Battery Charger Controller, USB Debug Probe / Development Tool, Consumer USB Audio / MIDI Device.
USB HID Peripheral Device
The PIC24FJ32GP202T-I/SO is purpose-built for USB Human Interface Devices such as custom keyboards, mice, game controllers, and macro pads. Its integrated Full-Speed USB 2.0 OTG transceiver eliminates external PHY chips, and the 32 KB ECC Flash comfortably fits HID report descriptors plus firmware. With 16 MIPS throughput, polling latency stays well below the 1 ms USB frame budget, while the XLP sleep currents (low hundreds of nA) preserve battery life between user events in wireless-bridge HID designs.
Recommended
Low-Power IoT Sensor Node
Battery-powered IoT sensor nodes benefit from the PIC24FJ32GP202T-I/SO's XLP nanoamp sleep modes, 2.0V-3.6V wide supply range, and integrated USB for tethered configuration. The 8 KB RAM accommodates sensor-fusion buffers and small TLS-style state machines, while the 21 GPIO pins support multiple I2C/SPI sensor breakouts. The ECC Flash improves reliability in outdoor deployments where alpha-particle or EMI-induced bit flips are a concern.
Recommended
Industrial Data Logger with USB Dump
Industrial data loggers requiring periodic USB-based dump to a host PC leverage the PIC24FJ32GP202T-I/SO's USB Device MSD or CDC class support, ECC Flash for high-write-cycle reliability, and industrial -40C to +85C operating range. The 32 KB Flash holds bootloader plus application, and 8 KB RAM buffers log bursts before USB transmission. Core-independent peripherals (CIPs) such as CRC and DMA offload CPU overhead during sustained logging.
Recommended
USB Battery Charger Controller
USB-bus-powered battery charger designs use the PIC24FJ32GP202T-I/SO to negotiate USB current limits (100 mA / 500 mA), monitor cell voltage via the integrated ADC, and drive PWM-controlled charge cycles. The integrated 3.3V regulator reference and USB transceiver simplify the analog front-end. Sleep currents in the nanoamp range preserve battery shelf life between charge sessions in low-duty-cycle products like emergency flashlights.
Recommended
USB Debug Probe / Development Tool
The PIC24FJ32GP202T-I/SO is well suited as the brains of a low-cost USB debug probe or programming dongle. Its integrated USB transceiver and 32 KB Flash accommodate custom protocol stacks (CMSIS-DAP, vendor-specific debug channels), while the 28-SOIC package is hand-solderable for prototype builds. Industrial temperature range suits field deployment of test fixtures in factory or laboratory environments.
Recommended
Consumer USB Audio / MIDI Device
USB audio class devices, MIDI controllers, and digital audio peripherals leverage the PIC24FJ32GP202T-I/SO's isochronous USB endpoints, PWM modules for LED feedback, and ample Flash for descriptor tables plus audio class firmware. The 21 GPIO pins drive multiple buttons, encoders, and LED rings common in MIDI surface designs, while the 8 KB RAM holds small audio buffers. Nanoamp sleep modes suit battery-powered portable MIDI controllers.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32GP202T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ32GP202-I/SO | PIC24FJ32GA102-I/SO | PIC24FJ32GB002-I/SO | PIC24FJ32GA002-I/SO | PIC24FJ32GP202T-I/SS |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (SO) | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SSOP (SS) - same die, different footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| USB | Full-Speed USB 2.0 Host/Device/OTG | Full-Speed USB 2.0 Host/Device/OTG | No USB | Full-Speed USB 2.0 Device only | No USB | Full-Speed USB 2.0 Host/Device/OTG |
| 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) |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| Flash ECC | Yes | Yes | No | No | No | Yes |
| Number of I/O | 21 | 21 | 21 | 21 | 21 | 21 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Integrated Full-Speed USB 2.0 OTG transceiver (vs PIC24FJ32GA102-I/SO)
- ECC Flash for harsh-environment reliability (vs PIC24FJ32GB002-I/SO)
- USB Host/OTG capability vs Device-only (vs PIC24FJ32GB002-I/SO)
Design Notes
Route USB D+ and D- as a 90 ohm differential pair on the top layer with a continuous ground plane beneath. Keep the pair length-matched within 150 mil, and place the common-mode choke within 5 mm of the MCU pins. Place a 100nF ceramic decoupling cap on each VDD/VSS pair (pins 8/13 and 19/28), and a 4.7uF bulk near the package. For EMI-sensitive designs, add a ferrite bead on VUSB (pin 27) sourced from the internal 3.3V LDO.
Decoupling: place 100nF X7R ceramic bypass caps on every VDD pin within 3 mm of the package, plus a 4.7uF-10uF bulk tantalum or ceramic on the main supply rail. The PIC24FJ32GP202T-I/SO's internal 3.3V LDO (VUSB pin 27) can source the USB transceiver but not the MCU core; use an external LDO for clean analog supply if ADC accuracy is critical.
Do not exceed 3.6V on any VDD pin; the PIC24FJ32GP202T-I/SO is NOT 5V tolerant. When migrating from a non-USB PIC24F variant, verify that VUSB is properly decoupled - floating VUSB can cause USB enumeration failures. Always configure the JTAG/ICS pins (RB6/RB7) as GPIO only after disabling ICS in configuration bits, otherwise debug code cannot re-enter programming mode without a high-voltage reset.
The PIC24FJ32GP202T-I/SO in 28-SOIC has a junction-to-ambient thermal resistance (theta_JA) of approximately 80 C/W on a 2-layer JEDEC board. At maximum CPU load (32 MHz, all peripherals active), power consumption is under 30 mW, so junction temperature rise is negligible (<3C). No heatsink is required for typical USB peripheral designs.
Compliance Information
RoHS3 compliant per Microchip product documentation. Not AEC-Q100 qualified - automotive designs should consider PIC24FJ-family AEC-Q100 variants if available. Halogen-free status not explicitly stated in the provided data.
