PIC24FJ32GA002T-I/ML - 16-bit 32MHz 32KB Flash MCU | Microchip
MPN: PIC24FJ32GA002T-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 | $2.52 | $2,520.00 |
PIC24FJ32GA002T-I/ML Overview
A PIC24F microcontroller is a 16-bit RISC MCU in Microchip's PIC family that uses a modified Harvard architecture with separate program and data buses. Within the broader taxonomy, it sits as: PIC24F MCU -> PIC24 family -> 16-bit MCU -> microcontroller -> embedded processor -> semiconductor. The "FJ" prefix indicates the eXtreme low-power technology node with nanoWatt sleep modes; the "32" indicates 32 KB Flash; the "GA002" sub-family adds USB, RTCC, and enhanced peripherals; and the "T" suffix denotes Tape & Reel packaging.
Key features include 32 KB (11K x 24) Flash program memory, 8 KB RAM, 21 I/O pins, a 10-bit ADC with up to 13 input channels, multiple PWM/OC outputs, two UART, two SPI, one I2C, an integrated USB 2.0 full-speed transceiver, and a Real-Time Clock/Calendar with alarm. The device operates from 2.0 V to 3.6 V and supports nanoWatt XLP sleep modes drawing less than 100 nA typical in deep sleep.
Architecturally, the PIC24FJ32GA002 uses a 16-bit modified Harvard core with a 16-element x 16-bit working register array, single-cycle bit, byte, and word operations, and hardware multiply/divide. The integrated USB 2.0 full-speed transceiver eliminates external USB PHY components, while the RTCC module with separate 32 kHz oscillator domain keeps time-stamping alive during MCU sleep.
Typical applications include low-power USB peripherals, sensor data loggers, handheld consumer devices, and industrial control nodes where USB connectivity and battery life are both critical.
A primary design consideration is supplying the part from a clean 3.3 V rail within the 2.0 V to 3.6 V window; the internal 1.8 V LDO requires an external bulk capacitor on Vcap. Decoupling 100 nF ceramics near every VDD/VSS pair is mandatory per Microchip reference designs.
This page consolidates distributor pricing, same-family drop-in alternatives, and practical engineering notes not found in a single manufacturer resource.
Drop-in alternatives for PIC24FJ32GA002T-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 PIC24FJ32GA002T-I/ML (same form factor and footprint) — differing in Package, ADC, Program Memory (Flash), Operating Temperature Range, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ32GA002-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GA002T-I/SO
✅ Drop-In✓ In Stock
$3.32 / Unit
View Datasheet →PIC24FJ32GA004T-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ32MC102T-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.82 / Unit
View Datasheet →PIC24FJ32GA002T-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ32GA002T-I/ML Maximum Ratings & Electrical Characteristics
| Product Type | 16-bit Microcontroller (MCU) |
| Family | PIC® 24F |
| Architecture | 16-bit RISC (Modified Harvard) |
| Core | PIC24F eXtreme Low Power |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 32 KB (11K x 24 words) |
| RAM | 8 KB |
| I/O Pins | 21 |
| Package | 28-QFN (6x6 mm) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) |
| ADC | 10-bit, up to 13 channels |
| USB | USB 2.0 Full-Speed integrated transceiver |
| Communication Peripherals | 2x UART, 2x SPI, 1x I2C |
| Mounting Type | Surface Mount |
PIC24FJ32GA002T-I/ML Pin Configuration
| Pin 1 | RA0 — I/O port A bit 0 / analog AN0 |
| Pin 2 | RA1 — I/O port A bit 1 / analog AN1 |
| Pin 3 | RA2 — I/O port A bit 2 / analog AN2 |
| Pin 4 | RA3 — I/O port A bit 3 / analog AN3 |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RA4 — I/O port A bit 4 |
| Pin 7 | RA5 — I/O port A bit 5 |
| Pin 8 | VDD — Positive supply voltage 2.0 V to 3.6 V |
| Pin 9 | RB0 — I/O port B bit 0 / programming PGD |
| Pin 10 | RB1 — I/O port B bit 1 / programming PGC |
| Pin 11 | RB2 — I/O port B bit 2 |
| Pin 12 | RB3 — I/O port B bit 3 |
| Pin 13 | RB4 — I/O port B bit 4 |
| Pin 14 | RB5 — I/O port B bit 5 |
| Pin 15 | RB6 — I/O port B bit 6 / ICSCLK |
| Pin 16 | RB7 — I/O port B bit 7 / ICSDAT |
| Pin 17 | RC0 — I/O port C bit 0 |
| Pin 18 | RC1 — I/O port C bit 1 |
| Pin 19 | VDD — Positive supply voltage 2.0 V to 3.6 V |
| Pin 20 | VCAP — Core LDO bypass capacitor pin |
| Pin 21 | RC2 — I/O port C bit 2 |
| Pin 22 | D- — USB D- data line |
| Pin 23 | D+ — USB D+ data line |
| Pin 24 | RC3 — I/O port C bit 3 |
| Pin 25 | RC4 — I/O port C bit 4 |
| Pin 26 | RC5 — I/O port C bit 5 |
| Pin 27 | VSS — Ground reference |
| Pin 28 | RA6 — I/O port A bit 6 / oscillator |
Typical Applications
PIC24FJ32GA002T-I/ML is suitable for 6 applications: USB HID Peripherals, Battery-Powered Sensor Logger, Industrial Control Nodes, Handheld Consumer Devices, Medical Patient Monitoring Accessories, Educational and Hobby Development.
USB HID Peripherals
The PIC24FJ32GA002T-I/ML fits USB Human Interface Device designs with its integrated USB 2.0 full-speed transceiver that eliminates an external PHY, 16 MIPS throughput for HID polling, and 8 KB RAM sufficient for USB descriptors plus report buffers. Its QFN-28 footprint routes the D+/D- pair cleanly, while nanoWatt sleep modes keep the device below 100 nA between user events. Designers place a 27 ohm series resistor pair on each data line, 100 nF decoupling on every VDD pin, and a 10 uF bulk capacitor on Vcap, then run the free Microchip USB stack from MPLAB Code Configurator. A typical HID keyboard draws 20 mA peak at 3.3 V during polling and drops to less than 1 uA in deep sleep - extending battery life over a year.
Recommended
Battery-Powered Sensor Logger
For battery-powered data loggers, the PIC24FJ32GA002T-I/ML delivers 8 KB RAM for circular sample buffers, 32 KB Flash for application + RTCC timestamps, and 32 KHz secondary oscillator for time-stamping during MCU sleep. The Real-Time Clock/Calendar maintains wall-clock time across deep sleep, while the 10-bit ADC captures up to 13 sensor channels with on-chip 1.2 V reference. Using nanoWatt XLP idle modes and selective peripheral gating, average current drops below 5 uA at 1 Hz sample rates, supporting coin-cell operation for months. The QFN-28 6x6 mm package suits compact PCB layouts alongside coin-cell holders and MEMS sensors.
Recommended
Industrial Control Nodes
Industrial control nodes leverage the PIC24FJ32GA002T-I/ML industrial -40C to +85C temperature range, 2.0 V to 3.6 V supply tolerance across noisy 24 V industrial rails (post-regulation), and PPS that maps UART/SPI/I2C to nearly any I/O pin for flexible PCB routing. Its 16 MIPS throughput handles MODBUS RTU framing, two UART channels bridge RS-485 and debug console, and 21 I/O pins drive relays and opto-isolators. Watchdog timer and brown-out reset ensure robust operation in unattended installations. The QFN-28 with thermal pad supports convection-cooled enclosures common in DIN-rail mount controllers.
Recommended
Handheld Consumer Devices
Handheld consumer electronics benefit from the PIC24FJ32GA002T-I/ML sub-microamp sleep current, 32 KB Flash for graphical UI state machines, and integrated USB for charging and firmware update. Its 21 I/O pins drive segment LCDs via charge pump or RGB status LEDs, while the RTCC module drives sleep scheduling. The QFN-28 6x6 mm footprint fits fitness bands and remote controls, and free MPLAB X toolchain slashes firmware development cost. End-product BOM savings come from the integrated USB PHY, eliminating external USB interface chips common in Cortex-M0 designs.
Recommended
Medical Patient Monitoring Accessories
For medical accessory designs such as pulse-oximeter probes and wearable monitors, the PIC24FJ32GA002T-I/ML combines a 10-bit ADC for vitals sensors, USB for tethered data transfer, and ultra-low deep-sleep current to preserve battery life between patient sessions. The 32 KB Flash accommodates trending algorithms and BLE-over-USB bridging stacks, while PPS allows the PCB designer to route analog and digital grounds independently. The 28-QFN footprint integrates cleanly with small form-factor medical device PCBs, and -40C to +85C industrial rating covers clinical environment swings.
Recommended
Educational and Hobby Development
Hobbyists and university labs benefit from the PIC24FJ32GA002T-I/ML free MPLAB X IDE and XC16 compiler, the integrated USB for easy bootloader access, and the rich PIC24F peripheral set that introduces students to RTCC, PPS, and DMA-like features. The 32 KB Flash is generous for class projects and USB-based labs, while the QFN-28 breakout board options from MikroElektronika and Digilent simplify hand-soldering. nanoWatt XLP sleep teaches power-conscious design - relevant across all modern MCUs - and the PIC24F architecture bridges naturally toward dsPIC and PIC32 families for advanced coursework.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32GA002T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ32GA002-I/ML | PIC24FJ32GA002T-I/SO | PIC24FJ32GA004T-I/ML | PIC24FJ32MC102T-I/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-QFN (6x6 mm) | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same |
| Flash | 32 KB | 32 KB | 32 KB | 64 KB (+100%) | 32 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Maximum CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| Supply 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 |
| USB | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated |
| I/O Pins | 21 | 21 | 21 | 21 | 21 |
| Packaging Variant | Tape & Reel (T suffix) | Tray (no T suffix) | Tape & Reel | Tape & Reel | Tape & Reel |
Key Differentiators
- Integrated USB 2.0 Full-Speed transceiver (vs PIC24FJ32MC102T-I/ML)
- 32 KB Flash in QFN-28 with PPS flexibility (vs PIC24FJ16GA002T-I/ML)
- nanoWatt XLP deep sleep under 100 nA (vs Typical Cortex-M0+ MCU)
Design Notes
The PIC24FJ32GA002T-I/ML core runs from a 1.8 V internal LDO that requires a low-ESR 10 uF ceramic bypass capacitor on the VCAP pin (pin 20). Place the VCAP cap within 5 mm of the pin with a wide ground trace to prevent core-voltage sag under USB load transients. Both VDD pins (8, 19) need 100 nF decoupling each, and both VSS pins (5, 27) require short, low-inductance returns. For battery-powered designs, use the nanoWatt XLP sleep modes with the secondary 32 kHz oscillator driving the RTCC to drop quiescent current below 100 nA typical.
Route the USB D+ and D- lines as a 90-ohm differential pair on the top layer with continuous ground plane beneath. Place the 27 ohm series resistors within 5 mm of the MCU pins and add a 15 kB pull-up on D+ for full-speed signaling. The QFN-28 thermal pad must be soldered to a 4 mm x 4 mm minimum copper pour stitched with thermal vias to the ground plane. Keep digital switching traces (PWM, SPI clock) more than 5 mm away from analog ADC traces to limit crosstalk into the 10-bit ADC measurements.
Do not omit the VCAP bypass capacitor - the MCU will not start without it. Ensure the MCLR pin is pulled high with a 10 kB resistor and a 100 nF cap to ground for noise immunity. PPS (Peripheral Pin Select) must be unlocked via the IOLOCK bit in OSCCON before remapping; forgetting this sequence is a frequent cause of 'dead' prototypes. When migrating from PIC24FJ32GA002 to PIC24FJ32GA004, double-check the Configuration Word settings - the larger Flash variant may default to different code-protect and WDT defaults that lock the device after programming.
Compliance Information
RoHS/REACH compliant per Microchip product page. Industrial -40C to +85C grade only; AEC-Q100 automotive variants are not available in this PIC24FJ32GA002 family - consider PIC24FJ32GA002T-I/ML automotive-equivalent PIC24FJ32 family for non-automotive designs.
