PIC24FJ64GB002-I/SS - 16-bit 32MHz 64KB Flash USB MCU | Microchip
MPN: PIC24FJ64GB002-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.92 | $4.92 |
| 10 | $4.43 | $44.30 |
| 100 | $3.92 | $392.00 |
| 500 | $3.51 | $1,755.00 |
| 1,000 | $3.1 | $3,100.00 |
PIC24FJ64GB002-I/SS Overview
A PIC24FJ 16-bit microcontroller is a member of Microchip's enhanced mid-range MCU family, built around a modified Harvard architecture that executes most instructions in one cycle. The XLP (eXtreme Low Power) variant adds nanoWatt technology for sleep currents as low as 20 nA, enabling years of battery life in always-on applications such as remote sensors, wearables, and metering.
Key features of the PIC24FJ64GB002 include 64KB Flash organized as 22K x 24, 8KB RAM, integrated Full-Speed USB 2.0 OTG with internal transceiver, 21 general-purpose I/O pins, multiple serial interfaces (UART, SPI, I2C), a 10-bit ADC with up to 9 channels, five 16-bit timers and a Real-Time Clock/Calendar. The CTMU peripheral enables capacitive-touch sensing for buttons and sliders without external components.
Architecturally, the device combines a 16-bit data path with a 24-bit instruction word and a hardware multiply/divide unit, allowing efficient C compilation via MPLAB XC16. The integrated USB 2.0 Full-Speed OTG controller with on-chip transceiver removes the need for an external PHY, reducing BOM cost in HID, CDC, MSD and custom-USB designs.
Typical applications include USB peripherals (HID keyboards, mice, custom-class devices), low-power sensor nodes, data loggers, capacitive touch interfaces, industrial control front-ends, and battery-powered medical accessories. The USB OTG capability also allows the device to act as either host or device, supporting dual-role designs such as USB flash drive readers.
Designers should note that proper decoupling (100 nF + 10 uF near VDD) and a 12 MHz or 32 kHz crystal reference (per datasheet) are required for stable USB operation. The DISVREG pin can be tied to VDD to disable the internal voltage regulator and supply VDDCORE externally when system power sequencing demands tighter control.
This page consolidates distributor pricing, drop-in alternatives and practical design considerations beyond the manufacturer datasheet, giving engineers a single reference for sourcing and second-sourcing this USB-capable PIC24F part.
Drop-in alternatives for PIC24FJ64GB002-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 PIC24FJ64GB002-I/SS (same form factor and footprint) — differing in ADC, Package, Timers, Program Memory (Flash), I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GB002T-I/SS
✅ Drop-In✓ In Stock
$3.06 / Unit
View Datasheet →PIC24FJ64GA002-I/SS
✅ Drop-In✓ In Stock
$2.51 / Unit
View Datasheet →PIC24FJ32GB002-I/SS
✅ Drop-In✓ In Stock
$2.21 / Unit
View Datasheet →PIC24FJ64GB002-E/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ64GB002-I/SS Maximum Ratings & Electrical Characteristics
| Core | PIC24F 16-bit RISC |
| CPU Family | PIC PIC24F XLP |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Flash Memory | 64 KB (22K x 24) |
| RAM | 8 KB |
| USB Peripheral | USB 2.0 Full-Speed OTG with internal transceiver |
| Operating Voltage | 2.0 V to 3.6 V |
| Operating Temperature Range | -40C to +85C (Industrial) |
| I/O Pins | 21 |
| ADC | 10-bit, up to 9 channels |
| Timers | 5 x 16-bit |
| Communication Interfaces | UART, SPI, I2C |
| Special Peripherals | CTMU (touch), RTCC, comparators |
| Package | 28-pin SSOP (5.30 mm body width) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited floor life) |
| RoHS Status | Compliant |
| Lead-Free Finish | Yes (Matte Tin) |
PIC24FJ64GB002-I/SS Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active-low |
| Pin 2 | AN0/RPG0/C1IND/RP0 — Analog input 0 / GPIO |
| Pin 3 | AN1/RPG1/C1INC/RP1 — Analog input 1 / GPIO |
| Pin 4 | VDD — Positive supply voltage |
| Pin 5 | VSS — Ground reference |
| Pin 6 | OSCI/CLKI/RC12 — Crystal oscillator input or external clock |
| Pin 7 | OSCO/CLKO/RC15 — Crystal oscillator output |
| Pin 8 | PGED1/RP2 — Programming data pin pair 1 / GPIO |
| Pin 9 | PGEC1/RP3 — Programming clock pin pair 1 / GPIO |
| Pin 10 | CVREF/AN1-/RP4 — Comparator voltage reference / GPIO |
| Pin 11 | D+/RP5 — USB D+ data line |
| Pin 12 | D-/RP6 — USB D- data line |
| Pin 13 | VBUS — USB VBUS monitor |
| Pin 14 | AN2/RP7 — Analog input 2 / GPIO |
| Pin 15 | AN3/C1INB/RP8 — Analog input 3 / GPIO |
| Pin 16 | AN4/C1INA/RP9 — Analog input 4 / GPIO |
| Pin 17 | AN5/RP10 — Analog input 5 / GPIO |
| Pin 18 | AN6/RP11 — Analog input 6 / GPIO |
| Pin 19 | AN7/RP12 — Analog input 7 / GPIO |
| Pin 20 | AVDD — Analog positive supply |
| Pin 21 | AVSS — Analog ground |
| Pin 22 | VDD — Positive supply voltage |
| Pin 23 | VSS — Ground reference |
| Pin 24 | DISVREG — Disable internal voltage regulator |
| Pin 25 | RP13 — Remappable GPIO |
| Pin 26 | RP14 — Remappable GPIO |
| Pin 27 | RP15 — Remappable GPIO |
| Pin 28 | VDDCORE — Regulated core supply output |
Typical Applications
PIC24FJ64GB002-I/SS is suitable for 6 applications: USB HID Peripheral Devices, USB Flash Drive / MSD Reader, Low-Power Wireless Sensor Nodes, Capacitive Touch Interfaces, USB-Powered Data Loggers, Custom USB Class Devices.
USB HID Peripheral Devices
The PIC24FJ64GB002-I/SS is purpose-built for USB Human Interface Device (HID) class peripherals such as keyboards, mice, game controllers and custom input devices. Its integrated USB 2.0 Full-Speed OTG controller with on-chip transceiver eliminates the need for an external PHY, reducing BOM cost and PCB area. The 64 KB Flash comfortably fits USB stack plus HID report descriptors and application logic, while 8 KB RAM is sufficient for HID buffers and protocol state. The CTMU peripheral allows capacitive-touch buttons without external hardware. Designers should ensure the VBUS pin sees 5V in host mode (via boost or external rail) and use the internal 3.3V regulator for device power, decoupling with 100 nF + 10 uF near VDD per the datasheet reference design.
Recommended
USB Flash Drive / MSD Reader
The PIC24FJ64GB002-I/SS functions as a USB Mass Storage (MSD) host that reads from USB flash drives for portable data loggers, field-test equipment or configuration uploaders. The OTG controller supports host role with proper VBUS switching, while the 32 MHz/16 MIPS core provides enough throughput for USB full-speed bulk transfers and FAT file-system parsing in C. The 64 KB Flash fits the MSD host stack plus a FAT library, and 8 KB RAM is enough for sector buffers. Compared to a discrete USB host controller solution, the PIC24FJ64GB002-I/SS cuts BOM cost by approximately 40-50% and shrinks PCB area, at the trade-off of higher CPU load for file-system operations.
Recommended
Low-Power Wireless Sensor Nodes
Combining the nanoWatt XLP technology (20 nA Sleep current, 500 nA RTCC) with the PIC24FJ64GB002-I/SS allows years of battery operation in duty-cycled sensor nodes that wake periodically to measure and transmit via USB or serial. The integrated USB OTG provides a convenient way to attach a USB wireless dongle or to charge an attached Li-Ion cell via USB. The 16 MIPS performance handles sensor data fusion in C while still drawing under 1 mA active at 3.3V. Designers typically duty-cycle at 1-10% to stay within coin-cell capacity, using the RTCC to schedule wake events and the CTMU for environmental capacitive measurements.
Recommended
Capacitive Touch Interfaces
The PIC24FJ64GB002-I/SS integrates the CTMU peripheral, which provides a constant-current source for measuring capacitance on GPIO pins. This makes the part ideal for touch buttons, sliders and proximity sensors in appliances, audio products and industrial control panels. With up to 21 I/O pins and hardware-driven charge-time measurement, response time is below 10 ms and immunity to mains hum is strong. The 64 KB Flash fits Microchip's mTouch reference firmware plus application code, and the XLP Sleep mode preserves battery life when the touch interface is idle. Compared to discrete touch controllers, the PIC24FJ64GB002-I/SS saves approximately $0.50-$1.00 in BOM cost by combining touch and main MCU.
Recommended
USB-Powered Data Loggers
The PIC24FJ64GB002-I/SS powers USB-attached data loggers for medical, environmental and industrial telemetry, drawing power directly from the USB VBUS pin and using the on-chip 10-bit ADC to digitize sensor signals. The 64 KB Flash fits a USB CDC or MSD stack plus logging firmware, while 8 KB RAM supports circular sample buffers for multi-kHz acquisition rates. Compared to a UART-only PIC24F variant, the integrated USB OTG removes the need for an external FTDI bridge, saving approximately $1.50-$2.00 per unit. Designers typically implement USB Suspend/Resume to drop current below 2.5 mA during idle periods, complying with the USB 2.0 specification.
Recommended
Custom USB Class Devices
Beyond standard HID/MSD/CDC classes, the PIC24FJ64GB002-I/SS supports custom USB classes for proprietary communication protocols, debug bridges and device-firmware-update (DFU) channels. The on-chip OTG controller and full-speed transceiver let the device appear as any class with vendor-specific descriptors, while the 16 MIPS core runs the Microchip USB stack with room for custom endpoints. Designers can implement vendor-specific control transfers, interrupt endpoints and even isochronous streaming for audio. Compared to a separate USB controller plus main MCU solution, the PIC24FJ64GB002-I/SS consolidates logic and reduces board space by approximately 30%.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GB002-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GB002T-I/SS | PIC24FJ64GB002-I/SO | PIC24FJ64GB002-I/SP | PIC24FJ64GA002-I/SS | PIC24FJ32GB002-I/SS | PIC24FJ64GB002-E/SS |
|---|---|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP | 28-SOIC | 28-SPDIP | 28-SSOP | 28-SSOP | 28-SSOP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 64 KB | 32 KB (-50%) | 64 KB | ||
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | ||
| Maximum Clock Speed | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | ||
| USB Peripheral | USB 2.0 FS OTG with internal transceiver | USB 2.0 FS OTG | No USB (-100%) | USB 2.0 FS OTG | USB 2.0 FS OTG | ||
| 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 | ||
| Temperature Grade | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Extended (different upper limit) |
Key Differentiators
- Integrated Full-Speed USB OTG with on-chip transceiver (vs PIC24FJ64GA002-I/SS)
- nanoWatt XLP low-power technology (vs PIC24FJ32GB002-I/SS)
- CTMU hardware capacitive touch peripheral (vs PIC24FJ64GB002-I/SP (SPDIP variant))
Design Notes
The PIC24FJ64GB002-I/SS integrates a 3.3V voltage regulator that supplies VDDCORE from the VDD pin. Place a 100 nF ceramic decoupling capacitor as close as possible to VDD pins (pins 4 and 22), plus a bulk 10 uF ceramic at the board's power entry. If USB VBUS current is expected above 100 mA, ensure your supply can source 500 mA peaks per USB 2.0 spec. Per datasheet section 2, the DISVREG pin should be tied to VDD for normal internal-regulator operation or to ground only if you have an external VDDCORE rail.
Use a 4-layer PCB with continuous ground plane under the SSOP-28 footprint to ensure USB signal integrity. Route the USB D+/D- differential pair as a 90-ohm differential impedance matched length within 2 mm of each other. Keep digital switching traces (especially PWM outputs) at least 5 mm away from the USB pair and the AVSS/AVDD analog section. Place the 12 MHz crystal within 5 mm of OSCI/OSCO pins with short, symmetric traces and a ground guard ring.
Do not leave the MCLR pin floating - it must be pulled up to VDD through a 10 kohm resistor per datasheet configuration. Ensure the VBUS pin (pin 13) is properly connected to the USB connector's VBUS line even in device-only mode, because the USB stack uses it for session detection. The CTMU peripheral requires a software calibration routine before first use - failure to calibrate results in poor touch sensitivity. Finally, when entering USB Suspend, the device must drop core current below 2.5 mA within 10 ms to comply with USB 2.0; verify with the SUSPEND bit set in the U1PWRC register.
The PIC24FJ64GB002-I/SS in SSOP-28 has a thermal resistance (theta_JA) of approximately 95 C/W on a standard 4-layer JEDEC test board. Estimated: at maximum active current of 15 mA at 3.3V, power dissipation is approximately 50 mW, yielding a self-heating rise of less than 5C - well within safe limits even at +85C ambient. Designers do not need additional heatsinking for this MCU under normal USB and sensor workloads.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C) is standard; AEC-Q100 automotive grade is not available on the -I/SS variant. Lead-free matte-tin finish.
