PIC24FJ64GB202T-I/SO - 16-bit 32MHz MCU 64KB Flash USB | Microchip
MPN: PIC24FJ64GB202T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $3.02 | $1,510.00 |
| 1,000 | $2.69 | $2,690.00 |
PIC24FJ64GB202T-I/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and a rich set of peripheral interfaces such as timers, ADC, UART, SPI, I2C, and increasingly USB. In the system hierarchy, the PIC24FJ belongs to the 16-bit MCU tier, sitting between 8-bit MCUs (e.g., PIC16, PIC18) and 32-bit MCUs (e.g., PIC32MX, STM32). The "FJ" designation signals the use of the modified Harvard architecture with a wide data path, while "XLP" denotes Microchip's nanoWatt XLP power-saving technology with sleep currents in the microamp range.
Key features include 64KB (64K x 8) Flash, 8KB RAM, integrated USB 2.0 full-speed transceiver (device/host/OTG), peripheral pin select (PPS) for flexible signal routing, up to 21 general-purpose I/O pins, a 10-bit ADC, multiple PWM/CCP/SCCP modules, two UART, two SPI, and two I2C interfaces. The device supports an industrial operating temperature range of -40°C to +85°C and operates from a single 2.0V to 3.6V supply rail. The integrated crypto module supports AES encryption with 128/192/256-bit keys for secure data applications.
The PIC24FJ64GB202 family uses a 16-bit modified Harvard CPU with a 16 x 16 hardware multiply, single-cycle bit manipulation, and a deterministic interrupt controller. Its XLP technology provides multiple power-saving modes, including deep sleep with RTCC retention drawing less than 1 µA typical, enabling battery-powered designs that must run for years on a single cell. The on-chip USB 2.0 transceiver eliminates the need for an external PHY, simplifying BOM and PCB area.
Typical applications include low-power USB peripherals, secure IoT sensor nodes, consumer medical devices, data loggers, USB HID peripherals, secure token authenticators, and battery-powered embedded systems. The 28-pin SOIC package is friendly to hand-soldering and rework for prototypes and small-batch production.
Design consideration: the 28-SOIC package lacks an exposed thermal pad, so at high CPU loads designers should monitor the internal die temperature sensor and gate peripheral activity to keep junction temperature below the 125°C maximum. Note that the "T" suffix denotes Tape & Reel packaging; for prototyping or low-volume builds, request the tray-packaged variant PIC24FJ64GB202-I/SO.
This page synthesizes distributor pricing, drop-in alternatives from the same SOIC-28 footprint, and practical design notes not found in the manufacturer datasheet alone, giving embedded engineers a one-stop comparison resource for USB-enabled PIC24F MCU selection.
Drop-in alternatives for PIC24FJ64GB202T-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 PIC24FJ64GB202T-I/SO (same form factor and footprint) — differing in Package, Timers, ADC, Program Memory (Flash), Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GB202-I/SO
✅ Drop-In✓ In Stock
$2.27 / Unit
View Datasheet →PIC24FJ64GB202-I/SS
✅ Drop-In✓ In Stock
$2.95 / Unit
View Datasheet →PIC24FJ64GB002-I/SO
✅ Drop-In✓ In Stock
$4.85 / Unit
View Datasheet →PIC24FJ64GA002-I/SO
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →PIC24FJ32GB002T-I/SS
✅ Drop-In✓ In Stock
$2.32 / Unit
View Datasheet →PIC24FJ64GB202-E/SS
✅ Drop-In✓ In Stock
$4.18 / Unit
View Datasheet →PIC24FJ64GB202-E/SP
✅ Drop-In✓ In Stock
$4.15 / Unit
View Datasheet →PIC24FJ64GB202T-I/SO Maximum Ratings & Electrical Characteristics
| Family | PIC® XLP™ 24F |
| Core | PIC24 (16-bit modified Harvard) |
| Max CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 64 KB (64K x 8) |
| RAM | 8 KB |
| USB | USB 2.0 Full-Speed Device/Host/OTG, integrated transceiver |
| Crypto Module | AES 128/192/256-bit hardware |
| I/O Pins | 21 |
| ADC | 10-bit |
| Supply Voltage | 2.0 V to 3.6 V |
| Operating Temperature | -40°C to +85°C (Industrial) |
| Package | 28-SOIC (0.295 inch / 7.50 mm body width) |
| Peripheral Pin Select (PPS) | Yes |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
PIC24FJ64GB202T-I/SO Pin Configuration
| Pin 1 | RA0 — I/O port A bit 0 / AN0 / CVREF- |
| Pin 2 | RA1 — I/O port A bit 1 / AN1 / CVREF+ |
| Pin 3 | RA2 — I/O port A bit 2 / AN2 / VREF- |
| Pin 4 | RA3 — I/O port A bit 3 / AN3 / VREF+ |
| Pin 5 | RA4 — I/O port A bit 4 / AN4 |
| Pin 6 | RA5 — I/O port A bit 5 / AN5 |
| Pin 7 | RA6 — I/O port A bit 6 / OSC2 |
| Pin 8 | RA7 — I/O port A bit 7 / OSC1 |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Positive supply voltage (2.0V to 3.6V) |
| Pin 11 | RB0 — I/O port B bit 0 / PGED |
| Pin 12 | RB1 — I/O port B bit 1 / PGEC |
| Pin 13 | RB2 — I/O port B bit 2 / AN6 |
| Pin 14 | RB3 — I/O port B bit 3 / AN7 |
| Pin 15 | RB4 — I/O port B bit 4 / AN8 |
| Pin 16 | RB5 — I/O port B bit 5 / AN9 |
| Pin 17 | RB6 — I/O port B bit 6 / PGEC2 |
| Pin 18 | RB7 — I/O port B bit 7 / PGED2 |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage (2.0V to 3.6V) |
| Pin 21 | RC0 — I/O port C bit 0 |
| Pin 22 | RC1 — I/O port C bit 1 |
| Pin 23 | RC2 — I/O port C bit 2 |
| 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 | RC6 — I/O port C bit 6 |
| Pin 28 | RC7 — I/O port C bit 7 |
Typical Applications
PIC24FJ64GB202T-I/SO is suitable for 6 applications: Low-Power USB Peripherals, Secure IoT Sensor Nodes, Consumer Medical Devices, USB Data Loggers, USB HID Peripherals, Secure Token Authenticators.
Low-Power USB Peripherals
The PIC24FJ64GB202T-I/SO is purpose-built for low-power USB peripherals thanks to its integrated USB 2.0 full-speed transceiver (device/host/OTG) and nanoWatt XLP technology. Drawing less than 1 µA in deep sleep and ~250 µA/MHz active, the device can wake on USB attach or VBUS sense, enabling multi-year battery life in USB-connected sensor pods, HID peripherals, or USB toys. The 64KB Flash holds a full USB stack including HID, CDC, and vendor classes, while the 8KB RAM supports descriptor handling and protocol buffers without external memory. Unlike external-phy USB solutions, the integrated transceiver eliminates BOM cost and PCB area, making the GB202 ideal for compact USB dongle form factors. Pair with the MCP2221A USB-to-UART/I2C bridge as a host-side companion if serial bridging is needed.
Recommended
Secure IoT Sensor Nodes
For battery-powered IoT sensor nodes requiring encrypted communication, the PIC24FJ64GB202T-I/SO integrates a hardware AES 128/192/256-bit crypto engine alongside its USB transceiver. This hardware acceleration performs AES in single-digit microseconds per block, leaving the CPU free for sensor sampling, ADC conversion, and protocol processing. The XLP deep-sleep mode draws under 1 µA with RTCC retention, allowing periodic wake-sense-encrypt-transmit-sleep cycles on coin-cell batteries. The 10-bit ADC and PPS-mappable analog comparator handle analog sensor inputs, while the integrated USB simplifies field firmware updates and provisioning. Designers should use the PIC24FJ64GB202 family reference manual's crypto library for FIPS-compliant implementations. Pair with a temperature sensor like MCP9808 for cold-chain monitoring nodes.
Recommended
Consumer Medical Devices
The PIC24FJ64GB202T-I/SO suits consumer medical devices such as connected thermometers, pulse oximeters, and portable health monitors, where its low sleep current extends battery life while the integrated USB simplifies data transfer to a host PC or phone. The 28-SOIC wide-body package is friendly to hand-soldering and rework during clinical prototyping, and the industrial -40°C to +85°C operating range covers typical medical environments. Note that this part is not FDA-cleared; medical device manufacturers must validate the complete system per IEC 60601 and applicable FDA guidance. The hardware AES engine supports HIPAA-compliant encrypted data logging, and the 64KB Flash fits typical BLE-USB bridging firmwares.
Recommended
USB Data Loggers
Battery-powered USB data loggers benefit from the PIC24FJ64GB202T-I/SO's combination of 64KB Flash (for log storage with wear-levelling), integrated USB for offload, and XLP deep sleep to extend unattended deployment. A typical logger might sample a sensor every 30 seconds, write to Flash, and enter deep sleep between samples; the under-1-µA sleep current enables multi-year deployments on 2xAA cells. When the operator plugs in USB, the device enumerates as a Mass Storage class device and exposes the log file. The peripheral pin select (PPS) feature remaps UART/SPI/I2C to multiple physical pins, simplifying PCB routing in tight enclosures. Pair with an external SPI Flash like SST26VF016B for higher-capacity logging needs.
Recommended
USB HID Peripherals
Custom HID peripherals - barcode scanners, magnetic-stripe readers, programmable keypads, gaming controllers - benefit from the PIC24FJ64GB202T-I/SO's integrated USB transceiver and full-speed signaling at 12 Mbps. HID class drivers are built into Windows, macOS, Linux, and Android, eliminating host-side driver development. The 64KB Flash holds a custom HID descriptor plus vendor logic, while the PPS feature lets designers route interrupt inputs to convenient PCB locations. The XLP sleep current makes the part suitable for bus-powered or self-powered HID devices that spend most of their time idle. For higher-pin-count HID designs with more buttons/LEDs, consider migrating to the 44-pin PIC24FJ64GB004 variants.
Recommended
Secure Token Authenticators
The PIC24FJ64GB202T-I/SO's hardware AES 128/192/256-bit crypto engine makes it well suited for secure token authenticators such as FIDO/U2F keys, software license dongles, and one-time-password generators. Hardware AES ensures tamper-resistant key storage and cryptographic operation that cannot be extracted through firmware attacks. The integrated USB enumerates as a HID or vendor-class device and presents itself to the host operating system as a security token. The XLP sleep current is critical for battery-powered tokens that must remain dormant for months between uses. Pair with an external ATECC608B for higher-assurance secure element functionality in payment/PKI applications.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GB202T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GB202-I/SO | PIC24FJ64GB002-I/SO | PIC24FJ64GA002-I/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB |
| Integrated USB | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | No USB |
| AES Crypto Engine | Yes (AES-128/192/256) | Yes (AES-128/192/256) | No crypto | No crypto |
| Operating Temperature | -40°C to +85°C (Industrial) | -40°C to +85°C (Industrial) | -40°C to +85°C (Industrial) | -40°C to +85°C (Industrial) |
| Packaging Format | Tape & Reel | Tray | Tray | Tray |
Key Differentiators
- Integrated USB 2.0 FS transceiver with Device/Host/OTG (vs PIC24FJ64GA002-I/SO)
- Hardware AES 128/192/256-bit crypto engine (vs PIC24FJ64GB002-I/SO)
- eXtreme Low Power (XLP) deep sleep under 1 µA (vs PIC24FJ64GB202-E/SP (extended temp SPDIP))
Design Notes
Estimated: at 32 MHz active with all peripherals enabled, the PIC24FJ64GB202T-I/SO draws approximately 8-10 mA from the 3.3V rail. In deep sleep with RTCC retention, current drops to less than 1 µA, enabling multi-year battery operation on coin cells. Designers should place a 100 nF decoupling capacitor on each VDD/VSS pair (pins 9/10 and 19/20) within 5 mm of the package pins, and add a bulk 4.7 µF tantalum near the device. Use the PPS feature to remap peripherals to lower-pin-count packages without losing functionality.
Route the USB D+ and D- traces as a 90-ohm differential pair with matched length (within 2 mm tolerance), keep them short (under 25 mm), and surround them with a continuous ground pour on the same layer. The integrated USB PHY eliminates the need for external series resistors, but a common-mode choke (e.g., ACM2012) is recommended near the USB connector for EMI compliance. Avoid routing digital signals across the USB differential pair to minimize crosstalk and maintain USB-IF compliance.
Three common pitfalls when designing with the PIC24FJ64GB202T-I/SO: (1) forgetting to configure the VCAP pin (pin 1 on some variants) with a 10 µF capacitor for internal core voltage stability; (2) failing to set the JTAG/PGECx configuration fuses, which can lock out debugging - always verify configuration bits in code; (3) exceeding the 3.6V absolute maximum on any pin, including USB D+/D-, which can permanently damage the integrated transceiver. Always refer to the family reference manual's configuration bits chapter before programming custom fuse settings.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - this part is intended for industrial and consumer applications, not automotive. For automotive-grade PIC24F USB MCUs, choose the PIC24FJ64GB202T-I/SO automotive catalog variant or higher-grade GB-series.
