PIC24FJ64GB202-I/SS - 16-bit 32MHz 64KB Flash USB MCU | Microchip
MPN: PIC24FJ64GB202-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.82 | $4.82 |
| 10 | $4.34 | $43.40 |
| 100 | $3.71 | $371.00 |
| 500 | $3.28 | $1,640.00 |
| 1,000 | $2.95 | $2,950.00 |
PIC24FJ64GB202-I/SS Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and peripheral interfaces (USB, UART, timers, ADC). Within the PIC24F hierarchy, the 'GB2' sub-family adds USB-OTG plus hardware cryptography, while the broader 24F line uses Microchip's 16-bit modified-Harvard architecture for higher throughput than 8-bit PIC MCUs and better code density than 32-bit parts in cost-sensitive designs.
Key features include eXtreme Low Power (XLP) technology with sleep currents in the nanoamp range, a 16-channel 10-bit ADC, five 16-bit timers, two UART/SPI/I2C modules, a parallel master port, and the dedicated crypto engine that accelerates AES, DES, and SHA. The integrated USB-OTG controller supports Host, Device, and On-The-Go roles without an external PHY.
Typical applications include USB token / smart-card readers, secure IoT sensor nodes, electronic meters, battery-powered medical peripherals, and human-interface devices such as keyboards or toys. The hardware crypto engine removes the burden of implementing AES in firmware, freeing MIPS for application logic.
When designing with this part, place a 12 MHz crystal on the primary oscillator pins, add the mandatory 1 µF VDDCORE decoupling capacitor, and follow the USB-OTG layout guidelines in the datasheet's "USB Operation" chapter. The crypto engine needs its own power-rail decoupling and cannot be used simultaneously with deep sleep.
This page combines distributor pricing, drop-in same-package alternatives, and practical design notes to help engineers evaluate the PIC24FJ64GB202-I/SS faster than reading the full datasheet alone.
Drop-in alternatives for PIC24FJ64GB202-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 PIC24FJ64GB202-I/SS (same form factor and footprint) — differing in Core, ADC, Timers, Package, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ128GB202-I/SS
✅ Drop-In✓ In Stock
$3.79 / Unit
View Datasheet →PIC24FJ64GB202-E/SS
✅ Drop-In✓ In Stock
$4.18 / Unit
View Datasheet →PIC24FJ128GB202T-I/SO
✅ Drop-In✓ In Stock
$4.42 / Unit
View Datasheet →PIC24FJ128GB202-I/MM
✅ Drop-In✓ In Stock
$4.65 / Unit
View Datasheet →PIC24FJ64GB202-I/SS Maximum Ratings & Electrical Characteristics
| Core | PIC24F 16-bit modified-Harvard |
| Family | PIC XLP 24F GB2 series |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 64 KB |
| Data Memory (RAM) | 8 KB |
| USB Interface | USB 2.0 Full-Speed OTG (Host/Device/OTG) |
| Crypto Engine | Hardware AES, DES, 3DES, SHA, MD5, RNG |
| ADC | 10-bit, up to 16 channels |
| Timers | Five 16-bit timers |
| Communication Peripherals | 2x UART/SPI/I2C, PMP |
| Operating Voltage | 2.0 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (industrial) |
| Package | 28-pin SSOP (5.30 mm body) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC24FJ64GB202-I/SS Pin Configuration
| Pin 1 | MCLR/RE3 — Master Clear (reset) input or digital-only I/O RE3 |
| Pin 2 | RA0 — Port A bit 0 / AN0 / CN2 |
| Pin 3 | RA1 — Port A bit 1 / AN1 / CN3 |
| Pin 4 | RA2 — Port A bit 2 / AN2 / VREF- / CN4 |
| Pin 5 | RA3 — Port A bit 3 / AN3 / VREF+ / CN5 |
| Pin 6 | RA4 — Port A bit 4 / AN4 / CN6 |
| Pin 7 | RA5 — Port A bit 5 / AN5 / CN7 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/RA7 — Primary oscillator crystal input or GPIO |
| Pin 10 | OSC2/RA8 — Primary oscillator crystal output or GPIO |
| Pin 11 | SOSCI/RB4 — Secondary oscillator crystal input or GPIO |
| Pin 12 | SOSCO/SOSC2/RB5 — Secondary oscillator crystal output or GPIO |
| Pin 13 | VSS — Ground reference |
| Pin 14 | VDD — Positive supply (2.0V to 3.6V) |
| Pin 15 | D+/RG2 — USB D+ data line / Port G bit 2 |
| Pin 16 | D-/RG3 — USB D- data line / Port G bit 3 |
| Pin 17 | VBUS — USB VBUS sensing input |
| Pin 18 | RC1 — Port C bit 1 / remappable peripheral |
| Pin 19 | RC2 — Port C bit 2 / remappable peripheral |
| Pin 20 | RC3 — Port C bit 3 / remappable peripheral |
| Pin 21 | RC4 — Port C bit 4 / remappable peripheral |
| Pin 22 | RB8 — Port B bit 8 / remappable peripheral |
| Pin 23 | RB9 — Port B bit 9 / remappable peripheral |
| Pin 24 | RB10 — Port B bit 10 / remappable peripheral |
| Pin 25 | RB11 — Port B bit 11 / remappable peripheral |
| Pin 26 | RB12 — Port B bit 12 / remappable peripheral |
| Pin 27 | AVSS — Analog ground reference |
| Pin 28 | AVDD — Analog positive supply |
Typical Applications
PIC24FJ64GB202-I/SS is suitable for 6 applications: USB Security Token / Smart Card Reader, Secure IoT Sensor Node, Battery-Powered Medical Peripherals, Electronic Metering (Electric / Water / Gas), USB Human-Interface Devices (HID), Educational and Maker Boards.
USB Security Token / Smart Card Reader
The PIC24FJ64GB202-I/SS is a strong fit for USB security tokens and smart-card readers because its integrated hardware AES/DES/SHA engine accelerates authentication handshakes while the USB-OTG controller handles Full-Speed signaling. Placed directly behind the USB-C or USB-A connector, the part negotiates Host or Device role on demand via the OTG ID pin, and the hardware RNG seeds cryptographic nonces without relying on software pseudo-random generators. Designers should allocate 16 KB Flash to the USB stack and crypto driver, leaving 48 KB for application logic. Compared with a discrete MCU plus external secure-element, the GB202 saves roughly $1.50 BOM at the same security level.
Recommended
Secure IoT Sensor Node
For battery-powered IoT sensor nodes, the PIC24FJ64GB202-I/SS offers XLP nanoamp sleep current, USB-OTG for tethered firmware updates, and a hardware crypto engine for TLS handshakes. The 32 MHz core can complete an AES-128 encryption in roughly 5 µs, enabling secure transmissions without waking the radio. Designers pair it with a sub-GHz or BLE module over UART and route sensor data through the 16-channel 10-bit ADC. Compared with 32-bit Cortex-M0 alternatives, the GB202's lower active power (around 1.4 mA at 32 MHz) and integrated crypto shrink BOM and firmware size by 30-40%.
Recommended
Battery-Powered Medical Peripherals
The PIC24FJ64GB202-I/SS fits handheld medical peripherals that need USB charging and authenticated data transfer. Its XLP technology draws under 100 nA in Deep Sleep with the RTCC running, extending coin-cell life to multi-year operation for spot-check pulse-oximeters or glucose meters. The 10-bit ADC captures analog sensor front-ends, and the crypto engine signs measurement records before upload to comply with FDA cybersecurity guidance. Use a single-cell Li-ion supply; the 2.0V minimum VDD enables operation down to depletion.
Recommended
Electronic Metering (Electric / Water / Gas)
The PIC24FJ64GB202-I/SS targets electronic meters where secure wireless firmware updates are increasingly mandated. The hardware AES engine secures over-the-air (OTA) firmware loaders, and USB-OTG enables service technicians to plug a meter reader directly into the meter for local data extraction. With 64 KB Flash and 8 KB RAM, the part fits Tamper-detection firmware, energy-measurement routines, and an LCD driver via the PMP bus. Designers use the ADC plus a dedicated metering front-end IC and store rolling logs in the lower 16 KB of Flash for one-hour intervals across a year.
Recommended
USB Human-Interface Devices (HID)
The PIC24FJ64GB202-I/SS serves USB HID devices such as custom keyboards, programmable keypads, and gaming controllers where the 28-pin count is sufficient. The USB-OTG controller reports up to 8 endpoint configurations for keyboards with media and macro keys. The crypto engine is optional but useful for authenticated USB devices that fight keystroke-injection attacks. A 32 MHz FCY drives USB Full-Speed polling with ample MIPS left for capacitive-touch scanning on the ADC-capable pins.
Recommended
Educational and Maker Boards
The PIC24FJ64GB202-I/SS appears on Microchip's PIC24F USB Starter Kit and a wide range of third-party maker boards because it combines a USB bootloader, hardware crypto, and 64 KB of Flash at a sub-$5 price. The MPLAB X IDE and XC16 compiler are free, and the PICkit 4 or Snap debugger programs the part over ICSP using only two I/O pins. Hobbyists build USB volume knobs, secure data loggers, and pico-scope-like instruments on this part.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GB202-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ128GB202-I/SS | PIC24FJ64GB202-E/SS | PIC24FJ128GB202T-I/SO | PIC24FJ128GB202-I/MM |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP (same) | 28-SSOP (same) | 28-SOIC (wider) | 28-QFN (smaller) |
| Core Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| Flash | 64 KB | 128 KB | 64 KB | 128 KB | 128 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| USB-OTG | Yes | Yes | Yes | Yes | Yes |
| Crypto Engine | AES/DES/SHA/MD5/RNG | AES/DES/SHA/MD5/RNG | AES/DES/SHA/MD5/RNG | AES/DES/SHA/MD5/RNG | AES/DES/SHA/MD5/RNG |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (extended) | -40 C to +85 C | -40 C to +85 C |
| 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 |
Key Differentiators
- Integrated hardware crypto engine + USB-OTG in a single 28-pin MCU (vs PIC24FJ64GA002-I/SS)
- Pin-compatible 128 KB Flash upgrade path (vs PIC24FJ64GB002-I/SS)
- Extended-temperature variant on identical footprint (vs PIC24FJ64GB202-I/SS (this part))
Design Notes
Place a 1 µF ceramic decoupling capacitor as close as physically possible to the VDD pin (pin 14) and another on AVDD (pin 28), with a 0.1 µF cap in parallel for high-frequency noise. The PIC24FJ64GB202-I/SS draws roughly 14 mA active at 32 MHz and under 100 nA in Deep Sleep, so designers targeting battery life should idle the part in Sleep between interrupts. Use the dedicated VDDCORE pin with its own 1 µF cap; do not share that rail with any digital load.
USB Full-Speed signal integrity requires the D+/D- traces (pins 15 and 16) to be length-matched within 1 mm, kept under 50 mm total, and routed over a continuous ground plane. Place the 47 Ω source-series termination resistors within 2 mm of the MCU pins and the 15 kΩ pull-down on D- to indicate Full-Speed device. The 12 MHz crystal traces must be short and surrounded by ground pour on both sides of the PCB. Reference Microchip's ANUSB application notes for full USB-OTG layout guidance.
Estimated: the 12 MHz fundamental oscillator with 20 pF load caps drives the USB PLL to 48 MHz; a frequency error above ±0.25% (120 ppm) will fail USB Full-Speed compliance. Choose a crystal with ±50 ppm tolerance across -40 C to +85 C to leave margin. Add a 1 MΩ parallel resistor across the crystal pins if the oscillator is slow to start at cold temperatures.
Do not enable the hardware crypto engine while the part is in Deep Sleep - the engine has its own power gating and must be re-initialized after wake. The MCLR pin (pin 1) is RE3 by default; if it is left as a digital input without a pull-up, noise can cause spurious resets. Do not exceed 3.6 V on any pin; the part has no 5V tolerance on I/O. The VBUS pin (17) is 5V tolerant only when used as an analog input through the proper configuration sequence.
Compliance Information
RoHS and REACH compliance per Microchip product page; -I/SS suffix indicates lead-free matte-tin finish. AEC-Q100 qualification not published by Microchip for this part - the GB202 family is not automotive-qualified.
