PIC24FJ32GP202T-I/ML - 16-bit 32MHz 32KB Flash MCU | Microchip
MPN: PIC24FJ32GP202T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.94 | $1,470.00 |
| 1,000 | $2.65 | $2,650.00 |
PIC24FJ32GP202T-I/ML Overview
An MCU (microcontroller unit) is a single-chip processor that integrates a CPU core, program memory (Flash), data memory (SRAM), peripherals (timers, ADC, communication interfaces), and interrupt logic on one die. The PIC24F family sits in Microchip's 16-bit MCU tier between 8-bit PIC16/PIC18 devices and 32-bit PIC32 parts, offering higher performance than 8-bit cores while retaining a modified Harvard architecture with deterministic interrupt response. Within the PIC24F line, the 'GP' sub-family denotes general-purpose parts with USB-OTG peripheral support.
Key features include a 16-channel 12-bit ADC with 500 ksps throughput, USB 2.0 full-speed OTG with internal transceiver, three 16-bit timers, two UART/SPI/I2C modules, a 32-bit RTCC, and nanoWatt XLP power-saving modes that drop quiescent current to single-digit microamps for battery applications. The QFN-28 (6x6 mm) footprint enables compact board layouts, and the integrated 32 kHz internal low-power oscillator eliminates an external crystal in many designs.
Architecturally, the PIC24FJ32GP202 uses a 16-bit modified-Harvard core with a 24-bit instruction word, hardware multiply/divide in one cycle, and a 16-element working register array. The on-chip voltage regulator derives the core 1.8V from a single 2.0-3.6V rail, simplifying single-supply designs. The USB OTG controller supports both host and device roles and includes an internal 3.3V regulator for the USB transceiver.
Typical applications include USB HID peripherals, industrial sensor hubs, low-power IoT edge nodes, battery-powered data loggers, and consumer devices requiring on-board USB connectivity without an external PHY. Industrial control panels use this MCU for its extended temperature range and robust peripheral mix.
A key design consideration is to use the recommended 10uF bulk + 0.1uF decoupling pair on VDD/AVDD, route the USB DP/DM traces as a 90-ohm differential pair, and ensure the exposed pad on the QFN-28 is soldered to a ground pour for thermal and electrical performance.
This page consolidates distributor pricing, drop-in compatible alternatives, and practical design guidance not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC24FJ32GP202T-I/ML — 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/ML (same form factor and footprint) — differing in ADC, Operating Temperature, Package, Program Memory (Flash), Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ32GB002-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GA002-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GA102-I/ML
✅ Drop-In✓ In Stock
$2.65 / Unit
View Datasheet →PIC24FJ16MC102-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.21 / Unit
View Datasheet →PIC24FJ32GP202-I/SS
✅ Drop-In✓ In Stock
$2.62 / Unit
View Datasheet →PIC24FJ32GP202T-I/ML Maximum Ratings & Electrical Characteristics
| Core | PIC24F 16-bit RISC |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 32 KB (11K x 24 instructions) |
| Data Memory (SRAM) | 8 KB |
| Operating Voltage Range | 2.0 V to 3.6 V |
| ADC | 12-bit, up to 500 ksps, 16 channels |
| Timers | 3 x 16-bit Timer/Counter |
| Communication Interfaces | 2 x UART/SPI/I2C, USB 2.0 FS OTG |
| USB | USB 2.0 Full-Speed OTG with internal transceiver |
| RTCC | Real-Time Clock Calendar, 32-bit |
| Power-Saving Modes | nanoWatt XLP (deep sleep, sleep, idle) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | QFN-28 (6x6 mm) with exposed pad |
| Mounting Type | Surface Mount |
| MSL Level | 1 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
PIC24FJ32GP202T-I/ML Pin Configuration
| Pin 1 | RA0 — Port A bit 0 / analog input AN0 |
| Pin 2 | RA1 — Port A bit 1 / analog input AN1 |
| Pin 3 | RA2 — Port A bit 2 / analog input AN2 |
| Pin 4 | RA3 — Port A bit 3 / analog input AN3 |
| Pin 5 | VDD — Digital supply voltage (2.0V to 3.6V) |
| Pin 6 | RA4 — Port A bit 4 / analog input AN4 |
| Pin 7 | RA5 — Port A bit 5 / analog input AN5 |
| Pin 8 | RA6 — Port A bit 6 / oscillator pin |
| Pin 9 | RA7 — Port A bit 7 / oscillator pin |
| Pin 10 | VSS — Digital ground |
| Pin 11 | RB0 — Port B bit 0 / analog input AN8 |
| Pin 12 | RB1 — Port B bit 1 / analog input AN9 |
| Pin 13 | RB2 — Port B bit 2 / analog input AN10 |
| Pin 14 | RB3 — Port B bit 3 / analog input AN11 |
| Pin 15 | RB4 — Port B bit 4 / analog input AN12 |
| Pin 16 | RB5 — Port B bit 5 / analog input AN13 |
| Pin 17 | RB6 — Port B bit 6 / ICSP programming clock |
| Pin 18 | RB7 — Port B bit 7 / ICSP programming data |
| Pin 19 | RB8 — Port B bit 8 / analog input AN14 |
| Pin 20 | RB9 — Port B bit 9 / analog input AN15 |
| Pin 21 | D+ — USB D+ data line |
| Pin 22 | D- — USB D- data line |
| Pin 23 | VBUS — USB VBUS sense input |
| Pin 24 | AVDD — Analog supply voltage |
| Pin 25 | AVSS — Analog ground |
| Pin 26 | RC0 — Port C bit 0 |
| Pin 27 | RC1 — Port C bit 1 |
| Pin 28 | RC2 — Port C bit 2 |
Typical Applications
PIC24FJ32GP202T-I/ML is suitable for 6 applications: USB HID Peripherals, Industrial Sensor Hubs, Battery-Powered IoT Edge Devices, USB Data Loggers, Consumer Point-of-Sale Terminals, USB Audio Devices.
USB HID Peripherals
The PIC24FJ32GP202T-I/ML is well-suited for USB HID peripherals such as keyboards, mice, game controllers, and custom input devices. Its integrated USB 2.0 Full-Speed OTG controller with internal transceiver eliminates the need for an external PHY, reducing BOM cost and PCB area. The 32 KB of ECC Flash and 8 KB of SRAM comfortably fit HID class descriptors, button matrix scanning state machines, and USB endpoint buffers. Operating from a single 3.3 V rail with nanoWatt XLP low-power modes, this part supports bus-powered and self-powered USB topologies. The 32 MHz CPU (16 MIPS) provides ample throughput for debounced key scanning and report generation at the 1000 Hz USB polling rate.
Recommended
Industrial Sensor Hubs
In industrial sensor hubs, the PIC24FJ32GP202T-I/ML aggregates data from analog and digital sensors and presents it over USB, RS-232/485, or I2C. Its 16-channel 12-bit 500 ksps ADC handles temperature, pressure, and flow transducer inputs with adequate resolution. The two UART/SPI/I2C modules let the MCU bridge to Modbus sensors, SPI flash memory, and I2C peripherals concurrently. With the -40 C to +85 C industrial temperature range and 2.0-3.6 V operation, it tolerates factory-floor power transients. The 32 KB Flash supports firmware update via USB bootloader, enabling field maintenance without physical access to the device.
Recommended
Battery-Powered IoT Edge Devices
The PIC24FJ32GP202T-I/ML fits battery-powered IoT edge devices that require periodic sensor reading, USB configuration, and multi-month battery life. Its nanoWatt XLP technology drops quiescent current to single-digit microamps in deep-sleep mode, while retaining RAM and RTCC operation. The internal 32 kHz low-power oscillator eliminates an external crystal in many designs, reducing sleep-mode current further. Wake from sleep via RTCC alarm or external interrupt enables duty-cycled sensing schemes. The 32 KB Flash and 8 KB SRAM accommodate small MQTT-SN or proprietary L2C protocol stacks for low-rate telemetry.
Recommended
USB Data Loggers
The PIC24FJ32GP202T-I/ML powers compact USB data loggers that record sensor data to internal flash and present files over USB mass storage. With 32 KB Flash for firmware, the MCU can drive external SPI flash (e.g., W25Q) for gigabyte-scale logs. The USB OTG controller with internal transceiver enumerates as a mass-storage device without external PHY, while the RTCC timestamping provides accurate event logs. The 12-bit ADC captures analog signals from thermocouples, load cells, and other transducers. Operating from USB bus power with optional coin-cell backup keeps the loggers plug-and-play.
Recommended
Consumer Point-of-Sale Terminals
In consumer POS terminals and small appliances, the PIC24FJ32GP202T-I/ML drives keypad scanning, LCD control, USB device connectivity, and secure firmware updates. Its three 16-bit timers handle key debounce, LCD refresh, and backlight PWM independently. The USB OTG controller supports firmware upgrade via USB DFU class, while the 8 KB SRAM buffers transaction records. Operating at industrial temperature ranges, it tolerates commercial kitchen or retail-counter environments. The compact QFN-28 (6x6 mm) footprint simplifies PCB layouts where board real estate is at a premium.
Recommended
USB Audio Devices
The PIC24FJ32GP202T-I/ML supports basic USB audio class devices such as USB speakers, headphone amplifiers, and audio interfaces. The USB OTG controller enumerates as a USB Audio 1.0 device, while the two I2S-capable serial interfaces (or PWM + timer) generate stereo audio output. With 16 MIPS performance, the MCU handles USB isochronous transfers at 48 kHz sample rate with modest audio buffering. The 8 KB SRAM provides frame buffer space, and 32 KB Flash accommodates the USB stack and audio control logic. It is a cost-effective choice for low-channel-count USB audio peripherals.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32GP202T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ32GB002-I/ML | PIC24FJ32GA002-I/ML | PIC24FJ32GA102-I/ML | PIC24FJ16MC102-I/SS | PIC24FJ32GP202-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-28 (6x6 mm) | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same |
| Program Flash | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB (-50%) | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 2 KB (-75%) | 8 KB |
| USB OTG | Yes (FS OTG) | Yes (FS OTG) | No | No | No | Yes (FS OTG) |
| ADC Resolution | 12-bit, 16-ch | 12-bit, 9-ch | 10-bit, 10-ch | 10-bit, 6-ch | 16-bit diff, 4-ch | 12-bit, 16-ch |
| 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 |
Key Differentiators
- Integrated USB 2.0 Full-Speed OTG with internal transceiver (vs PIC24FJ32GA002T-I/ML)
- Higher ADC channel count with 12-bit resolution (vs PIC24FJ32GA102-I/ML)
- ECC Flash for improved reliability (vs PIC24FJ16MC102-I/SS)
- Compact QFN-28 (6x6 mm) with full peripheral set (vs PIC24FJ32GP202-I/SS)
Design Notes
Estimated: at full 32 MHz active current of approximately 8 mA from a 3.3 V rail, power consumption is around 26 mW. In nanoWatt XLP sleep mode with RTCC running, current drops below 1 uA, enabling multi-year battery life from a CR2032 cell when duty-cycled at 1% wake ratio. Place a 10 uF bulk + 0.1 uF ceramic decoupling pair as close as possible to both VDD and AVDD pins, and connect AVSS to VSS at a single ground point.
Route the USB DP/DM traces as a 90-ohm differential pair with matched length, and place the USB decoupling cap within 5 mm of the VBUS pin. The QFN-28 exposed thermal pad MUST be soldered to a continuous ground pour with at least 8 thermal vias to the inner ground plane for mechanical reliability and electrical performance. The exposed pad also serves as the primary heatsink - do not leave it floating.
The PIC24FJ32GP202's USB peripheral requires the on-chip 3.3 V USB voltage regulator to be enabled via configuration bits; otherwise VBUS detection fails. Ensure the ICSP programming pins (RB6/RB7) are not pulled low during normal operation if you intend to use them as GPIO, as the debugger may inadvertently enter programming mode. The RTCC requires a 32.768 kHz crystal or external clock source for accurate timekeeping; the internal LF oscillator has wider tolerance and is unsuitable for time-critical applications.
Use a 4-layer PCB stack-up with dedicated ground and power planes for USB designs. Place the MCU near the USB connector to keep DP/DM traces short (under 50 mm). Series ferrite beads on VBUS protect against ESD events. Keep analog and digital ground regions separated, joined only at the MCU's AVSS/VSS pins, to avoid ground bounce coupling into the ADC measurements.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified; not intended for automotive safety-critical applications.
