PIC24FJ64GB002-I/SO - 16-bit 32MHz USB MCU 64KB Flash | Microchip
MPN: PIC24FJ64GB002-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.08 | $7.08 |
| 10 | $6.4 | $64.00 |
| 100 | $5.65 | $565.00 |
| 500 | $5.2 | $2,600.00 |
| 1,000 | $4.85 | $4,850.00 |
PIC24FJ64GB002-I/SO Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, Flash program memory, SRAM data memory, and on-chip peripherals such as timers, communication interfaces, and analog blocks. The PIC24F family is Microchip's 16-bit MCU line, offering higher performance and richer peripherals than 8-bit PIC MCUs while retaining low power consumption. Within the power-management hierarchy, the PIC24FJ64GB002 operates as the system master, controlling sensor acquisition, USB communication, and power sequencing in embedded designs. Its position in the broader taxonomy is: PIC24F -> 16-bit MCU -> microcontroller -> embedded processing IC -> semiconductor.
Key features include integrated USB 2.0 Full-Speed with on-chip transceiver, 21-channel 10-bit ADC with 500 ksps conversion rate, four 16-bit timers, two UART, two SPI, two I2C, a Parallel Master Port (PMP), and nanoWatt XLP power-saving modes drawing under 20 uA in sleep. The PIC24FJ64GB002 also provides a hardware Real-Time Clock Calendar (RTCC), 16-bit Parallel Port, and Peripheral Pin Select for flexible routing of digital functions.
Technical depth comes from its MIPS16e-enhanced 16-bit architecture running up to 16 MIPS, with single-cycle 16x16 multiply, hardware divide, and C-optimized instruction set. The integrated USB 2.0 PHY eliminates external transceiver circuitry, reducing BOM cost in USB device designs.
Typical applications include USB peripherals (HID, CDC, MSD, custom classes), consumer electronics with USB charging/connectivity, embedded data loggers, industrial sensor nodes, and battery-powered portable instruments. The XLP nanoWatt technology extends battery life to multi-year operation on coin cells.
When designing with this device, allocate one I/O bank for the USB D+/D- pins, observe the 28-pin SOIC PCB layout pitch (1.27 mm), and follow Microchip's USB hardware design guidelines for proper impedance-controlled routing. Adequate decoupling (10uF + 100 nF) near VDD/VUSB pins is mandatory.
Drop-in alternatives for PIC24FJ64GB002-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 PIC24FJ64GB002-I/SO (same form factor and footprint) — differing in Package, ADC, Program Memory (Flash), Timers, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GB002-I/SS
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View Datasheet →PIC24FJ64GB002-I/SP
✅ Drop-In✓ In Stock
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View Datasheet →PIC24FJ64GB002-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ64GB002-E/SO
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PIC24FJ64GB004-I/SO
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PIC24FJ64GA002-I/SO
✅ Drop-In✓ In Stock
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View Datasheet →PIC24FJ64GB002-I/SO Maximum Ratings & Electrical Characteristics
| Core | PIC24F 16-bit (MIPS16e-enhanced) |
| CPU Architecture | 16-bit Modified Harvard |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 64 KB |
| Data Memory (RAM) | 8 KB |
| Operating Voltage Range | 2.0 V to 3.6 V |
| USB | USB 2.0 Full-Speed (12 Mbps), on-chip transceiver |
| ADC | 10-bit, up to 21 channels, 500 ksps |
| Timers | 5 x 16-bit, 1 x 32-bit |
| Communication Interfaces | 2x UART, 2x SPI, 2x I2C, PMP |
| I/O Pins | 21 |
| RTCC | Yes (hardware Real-Time Clock Calendar) |
| Operating Temperature | -40C to +85C (industrial) |
| Package | 28-pin SOIC (SO), 1.27 mm pitch |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC24FJ64GB002-I/SO Pin Configuration
| Pin 1 | RA0 — Port A bit 0 / AN0 analog input |
| Pin 2 | RA1 — Port A bit 1 / AN1 analog input |
| Pin 3 | RA2 — Port A bit 2 / AN2 analog input |
| Pin 4 | RA3 — Port A bit 3 / AN3 analog input |
| Pin 5 | RA4 — Port A bit 4 / AN4 analog input |
| Pin 6 | VDD — Positive supply voltage (2.0V to 3.6V) |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — Port A bit 7 / AN7 analog input |
| Pin 9 | RA8 — Port A bit 8 / AN8 analog input |
| Pin 10 | RA9 — Port A bit 9 / AN9 analog input |
| Pin 11 | RB4 — Port B bit 4 / analog input |
| Pin 12 | RB5 — Port B bit 5 / analog input |
| Pin 13 | RB6 — Port B bit 6 / PGEC1 ICD clock |
| Pin 14 | RB7 — Port B bit 7 / PGED1 ICD data |
| Pin 15 | RA10 — Port A bit 10 / analog input |
| Pin 16 | VUSB — USB 3.3V transceiver supply |
| Pin 17 | D- — USB D- data line |
| Pin 18 | D+ — USB D+ data line |
| Pin 19 | RB8 — Port B bit 8 |
| Pin 20 | RB9 — Port B bit 9 |
| Pin 21 | RB10 — Port B bit 10 |
| Pin 22 | RB11 — Port B bit 11 |
| Pin 23 | RB12 — Port B bit 12 |
| Pin 24 | RB13 — Port B bit 13 |
| Pin 25 | RB14 — Port B bit 14 |
| Pin 26 | RB15 — Port B bit 15 |
| Pin 27 | AVDD — Analog supply voltage |
| Pin 28 | AVSS — Analog ground |
Typical Applications
PIC24FJ64GB002-I/SO is suitable for 6 applications: USB HID Peripheral Device, USB CDC Virtual COM Port Bridge, USB Battery Charger / Power Bank, USB Data Logger / Sensor Node, USB Mass Storage / SD Card Reader, USB MIDI Controller / Audio Interface.
USB HID Peripheral Device
The PIC24FJ64GB002-I/SO is a natural fit for USB Human Interface Device class peripherals (keyboards, mice, custom HID game controllers, barcode scanners). Its integrated USB 2.0 Full-Speed PHY eliminates the need for an external transceiver, reducing BOM cost by approximately $0.40 per board, while the on-chip DMA engine supports interrupt-free HID report handling at 1000 Hz polling rates. With 64 KB Flash the part holds the Microchip USB stack plus HID class driver plus application code with significant headroom. Designers should connect D+/D- to a USB type-B or micro-B connector with proper 90 ohm differential routing and an ESD protection array such as USBLC6-2SC6 near the connector.
Recommended
USB CDC Virtual COM Port Bridge
The PIC24FJ64GB002-I/SO is widely used as a USB-to-UART bridge replacing expensive FTDI chips in debug, industrial, and field-service applications. The integrated USB Full-Speed transceiver and dual UART peripherals enable CDC class firmware that emulates a virtual COM port on the host PC, while the actual data path uses one of the on-chip UARTs to an external RS-232 or RS-485 transceiver. The 32 MHz MIPS16e core sustains 921600 bps UART throughput without CPU saturation. The /SO 28-pin SOIC footprint simplifies hand-solderable prototypes and industrial assembly.
Recommended
USB Battery Charger / Power Bank
USB-connected lithium-ion battery chargers and power banks benefit from the PIC24FJ64GB002-I/SO's integrated USB PHY plus 10-bit ADC for battery voltage monitoring. The MCU can implement custom charging profiles, fuel-gauging display logic on character LCDs, and CC/CV control via the PWM peripheral. nanoWatt XLP technology keeps quiescent current below 20 uA in idle, critical for power banks that must hold charge for months. The 2.0V-3.6V supply range allows direct Li-ion or 2x AA operation with no LDO overhead.
Recommended
USB Data Logger / Sensor Node
The PIC24FJ64GB002-I/SO serves as a low-cost USB-attached data logger for environmental sensors, medical instrumentation, and industrial test stands. Its 10-bit 500 ksps ADC captures up to 21 analog channels, while 8 KB RAM buffers 4000 16-bit samples for batch USB transfer. The RTCC with hardware timestamp keeps accurate time during sleep intervals. XLP deep sleep under 20 uA extends battery life to multi-year operation on 2x AA cells, making it ideal for remote field logging with periodic USB cable connection for data download.
Recommended
USB Mass Storage / SD Card Reader
USB Mass Storage Class (MSD) device firmware on the PIC24FJ64GB002-I/SO exposes an external SD card to the host as a standard removable drive. The on-chip USB Full-Speed controller supports 12 Mbps transfers (about 1 MB/s throughput), and the SPI peripheral interfaces directly with SD cards up to 32 GB. Designers should use a separate SPI channel for the SD card and avoid contention with the USB stack. The 28-SOIC package allows the part to fit inside miniature USB card reader enclosures.
Recommended
USB MIDI Controller / Audio Interface
The PIC24FJ64GB002-I/SO is a capable host processor for USB MIDI class controllers, footswitch pedals, and small USB audio interfaces. USB MIDI class drivers fit comfortably in the 64 KB Flash with custom firmware handling footswitch debouncing, encoder scanning, and LED PWM. The 16 MIPS throughput sustains full 31250 bps MIDI throughput on multiple ports with negligible CPU load. For audio applications, the MCU acts as a control surface while an external codec handles the analog signal path.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GB002-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GB002-I/SS | PIC24FJ64GB002-I/SP | PIC24FJ64GB002-I/ML | PIC24FJ64GB002-E/SO | PIC24FJ64GB004-I/SO | PIC24FJ64GA002-I/SO |
|---|---|---|---|---|---|---|---|
| Package | 28-SOIC (SO) | 28-SSOP | 28-SPDIP | 28-QFN (ML) | 28-SOIC (SO) | 28-SOIC (SO) | 28-SOIC (SO) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| USB Peripheral | USB 2.0 Full-Speed with on-chip PHY | USB 2.0 Full-Speed with on-chip PHY | USB 2.0 Full-Speed with on-chip PHY | USB 2.0 Full-Speed with on-chip PHY | USB 2.0 Full-Speed with on-chip PHY | USB 2.0 Full-Speed with on-chip PHY | No USB (GA family) |
| 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) | 32 MHz (16 MIPS) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Operating Voltage | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V |
| Pin Count | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
Key Differentiators
- Integrated USB 2.0 Full-Speed PHY on-chip (vs PIC24FJ64GA002-I/SO)
- nanoWatt XLP power-saving technology (vs PIC24HJ12GP202-E/SO)
- 28-pin SOIC drop-in package family (vs PIC24FJ64GB002-I/SS)
Design Notes
The PIC24FJ64GB002-I/SO requires proper decoupling for stable operation and clean USB signaling. Place a 10 uF bulk capacitor plus 100 nF ceramic bypass capacitor as close as possible to the VDD pin (pin 6), and a separate 100 nF + 4.7 uF combination on AVdd (pin 27). The VUSB pin (pin 16) must be decoupled with 100 nF to 1 uF, since the internal USB PHY regulator powers from this pin. Vdd must be 3.0V to 3.6V when USB is active to meet USB electrical specifications; below 3.0V the USB bus may not enumerate reliably.
USB D+ and D- differential pair routing must maintain 90 ohm characteristic impedance with length matching to within 2 mm, and traces should be kept short (<50 mm total length). Place the ESD protection array (e.g., USBLC6-2SC6) within 5 mm of the USB connector. Avoid routing USB signals near high-frequency switching nodes or oscillator traces. A ground guard trace or continuous GND plane beneath the D+/D- pair reduces EMI susceptibility. The 28-pin SOIC package has 1.27 mm pin pitch which simplifies layout but still requires careful analog/digital separation on the PCB.
When using the 10-bit ADC for accurate measurements, AVdd must be bypassed with a ferrite bead or 10 ohm resistor from Vdd, and AVss connected to Vss at a single point near the MCU. Disable digital I/O on ADC channels during conversion (TRISbits = 1) to prevent digital switching noise from coupling into the ADC. Use the ADC's hardware averaging mode (4 or 16 samples) for noisy environments. For best USB signal integrity, ensure the USB cable is no longer than 5 m and the device-side pull-up on D+ is enabled correctly per USB 2.0 specification.
Compliance Information
RoHS and REACH compliant per Microchip product page. Lead-free / halogen-free packaging. Not AEC-Q100 qualified (automotive) - use automotive-grade PIC24 variants for vehicle applications.
