PIC24FJ64GU202-I/MV - 16-bit MCU, USB, 64KB Flash, UQFN-28 | Microchip
MPN: PIC24FJ64GU202-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.89 | $48.90 |
| 100 | $4.12 | $412.00 |
| 500 | $3.65 | $1,825.00 |
| 1,000 | $3.21 | $3,210.00 |
PIC24FJ64GU202-I/MV Overview
A 16-bit MCU (microcontroller unit) is a single-chip computer that combines a CPU, non-volatile program memory, working RAM, and a set of on-chip peripherals such as timers, ADC, communication controllers and I/O. The PIC24FJ family is positioned between 8-bit PIC16/PIC18 devices and 32-bit PIC32 parts; within the broader product taxonomy it sits in the hierarchy MCU -> microcontroller -> embedded processor -> semiconductor. The 'FJ' suffix denotes Microchip's eXtreme Low-Power (XLP) line, which uses proprietary nanoWatt technology to push sleep current down to a few hundred nanoamps while still retaining RAM and interrupt context.
Key features of this device include a 12-bit ADC configurable as up to 9 channels, four 16-bit timers, two UART, two SPI, two I2C, a 9-channel 10-bit DAC reference, and a charge time measurement unit (CTMU) for capacitive touch and temperature sensing. Integrated core-independent peripherals (CIPs) such as Configurable Logic Cells, Signal Measurement Timers, and PWM with hardware fault handling let the MCU react to events without waking the CPU, which further reduces system power.
The 64KB of Flash supports error correction (ECC), providing single-bit error correction and double-bit error detection, which is critical for safety and IEC 60730 class-B applications. The dedicated USB 2.0 Full-Speed transceiver includes on-chip pull-up resistors and can operate as device, host, or OTG, eliminating external PHY chips.
Typical applications include USB HID peripherals, USB-to-UART bridges, sensor hubs, low-power IoT nodes, wearable health devices, and battery-powered data loggers. The combination of small 4x4 mm UQFN package and XLP sleep currents below 1 uA also makes the part attractive for space-constrained wearable products.
Design tip: when using the on-chip USB transceiver, route the D+/D- pair as a 90-ohm differential pair with a clean ground return, and place the 0.1 uF VUSB decoupling capacitor within 2 mm of the VUSB pin. Internal pull-up on D+ is software-selectable, so an external 1.5K pull-up is normally not required.
This page synthesizes distributor pricing, drop-in alternatives in the same UQFN-28 (MV) package, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC24FJ64GU202-I/MV — 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 PIC24FJ64GU202-I/MV (same form factor and footprint) — differing in Package, Timers, Operating Temperature, ADC, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GU202-E/SS
✅ Drop-In✓ In Stock
$2.1 / Unit
View Datasheet →PIC24FJ64GU202T-I/MV
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC24FJ64GU202-E/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GU202-I/MV
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.06 / Unit
View Datasheet →PIC24FJ64GA702T-I/MV
✅ Drop-In✓ In Stock
$2.11 / Unit
View Datasheet →PIC24FJ64GB202-I/SS
✅ Drop-In✓ In Stock
$2.95 / Unit
View Datasheet →PIC24FJ64GU202-I/MV Maximum Ratings & Electrical Characteristics
| Core | PIC24F 16-bit |
| Program Memory | 64 KB ECC Flash (22K x 24) |
| Data Memory | 8 KB RAM |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage Range | 2.0 V to 3.6 V |
| ADC | 12-bit, up to 9 channels |
| Timers | 4 x 16-bit Timer/Counter |
| USB | USB 2.0 Full-Speed Host/Device/OTG (on-chip transceiver) |
| Communication Interfaces | 2 x UART, 2 x SPI, 2 x I2C |
| I/O Pins | 20 |
| Core Independent Peripherals (CIPs) | CLC, SMT, Configurable PWM |
| Sleep Current (XLP) | down to a few hundred nA (RAM retained) |
| Charge Time Measurement Unit (CTMU) | Yes (for mTouch and temperature) |
| Package | 28-pin UQFN (MV), 4 x 4 mm |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial, 'I' suffix) |
| Lead-Free / RoHS | Lead-Free, RoHS compliant |
PIC24FJ64GU202-I/MV Pin Configuration
| Pin 1 | RA0 — PORTA0 - GPIO / analog / CTMU |
| Pin 2 | RA1 — PORTA1 - GPIO / analog / CTMU |
| Pin 3 | RA2 — PORTA2 - GPIO / analog |
| Pin 4 | RA3 — PORTA3 - GPIO / analog |
| Pin 5 | RA4 — PORTA4 - GPIO / analog |
| Pin 6 | VDD — Positive supply, 2.0V to 3.6V |
| Pin 7 | VSS — Ground reference |
| Pin 8 | OSCI — Crystal oscillator input |
| Pin 9 | OSCO — Crystal oscillator output |
| Pin 10 | VUSB — USB 3.3V transceiver supply |
| Pin 11 | D- — USB data minus (differential pair) |
| Pin 12 | D+ — USB data plus (differential pair) |
| Pin 13 | VBUS — USB VBUS sensing input |
| Pin 14 | RB0 — PORTB0 - GPIO / PGED1 (program data) |
| Pin 15 | RB1 — PORTB1 - GPIO / PGEC1 (program clock) |
| Pin 16 | RB2 — PORTB2 - GPIO |
| Pin 17 | RB3 — PORTB3 - GPIO |
| Pin 18 | RB4 — PORTB4 - GPIO / SDA1 alternate |
| Pin 19 | RB5 — PORTB5 - GPIO / SCL1 alternate |
| Pin 20 | RB6 — PORTB6 - GPIO |
| Pin 21 | RB7 — PORTB7 - GPIO |
| Pin 22 | RC0 — PORTC0 - GPIO / SOSCO |
| Pin 23 | RC1 — PORTC1 - GPIO / SOSCI |
| Pin 24 | RC2 — PORTC2 - GPIO |
| Pin 25 | RC3 — PORTC3 - GPIO |
| Pin 26 | RC4 — PORTC4 - GPIO |
| Pin 27 | RC5 — PORTC5 - GPIO |
| Pin 28 | EP — Exposed thermal pad (must be soldered to ground) |
Typical Applications
PIC24FJ64GU202-I/MV is suitable for 7 applications: USB HID Peripheral Devices, Low-Power IoT Sensor Nodes, Wearable Health Monitors, USB-to-UART Bridge / CDC Devices, Industrial USB Data Loggers, Capacitive Touch HMI Panels, Battery Charging / OTG Devices.
USB HID Peripheral Devices
The PIC24FJ64GU202-I/MV fits USB HID peripherals because it integrates a Full-Speed USB 2.0 transceiver and 16 MIPS core in a 4 x 4 mm UQFN. The on-chip pull-ups remove the need for an external PHY and the 8 KB RAM comfortably hosts the HID report buffers plus application state. Placed on the D+/D-/VUSB lines with proper 90-ohm differential routing, the part delivers compliant USB signaling up to 12 Mbps while drawing only tens of mA active, ideal for keyboards, mice, gamepads, and custom HID sensors.
Recommended
Low-Power IoT Sensor Nodes
For battery-powered IoT sensor nodes, the PIC24FJ64GU202-I/MV delivers XLP sleep current in the few-hundred-nA range with RAM retained, allowing multi-year battery life on a single CR2032. The CTMU and 12-bit ADC drive up to 9 analog sensors, while Core Independent Peripherals (CIPs) sample and wake the CPU only on real events. Engineers typically pair the part with a sub-GHz or BLE radio over SPI, putting the MCU back to sleep between transmissions.
Recommended
Wearable Health Monitors
The PIC24FJ64GU202-I/MV suits wearable health monitors due to its 4 x 4 mm UQFN footprint, deep-sleep below 1 uA, and CTMU for skin-contact temperature or heart-rate sensing. With USB 2.0 on-chip, the same device handles charging, data offload, and firmware upgrade without external bridges. The 64 KB ECC Flash provides IEC 60730 class-B safety margin for medical-class applications, and the integrated I2C/SPI can drive additional sensor hubs.
Recommended
USB-to-UART Bridge / CDC Devices
Use the PIC24FJ64GU202-I/MV as a USB-to-UART bridge (CDC class) to replace FTDI cables at lower cost. The 16 MIPS core easily runs the CDC stack while the two UARTs each handle full hardware flow control. In a typical design the MCU sits between a host USB port and an external 3.3 V sensor or module, with the on-chip USB pull-ups eliminating the need for an external PHY or FTDI chip.
Recommended
Industrial USB Data Loggers
Industrial data loggers benefit from the PIC24FJ64GU202-I/MV's industrial -40C to +85C range, 12-bit ADC, and USB device mode for easy file offload. The 64 KB ECC Flash corrects single-bit errors in long-running logger deployments, raising IEC 60730 class-B compliance. Up to 9 ADC channels enable multi-sensor acquisition, and the timers support RTC-style timestamping while the USB port streams data to a PC.
Recommended
Capacitive Touch HMI Panels
The CTMU and 12-bit ADC of the PIC24FJ64GU202-I/MV implement mTouch capacitive sensing for HMI buttons and sliders. Up to 9 channels drive glass or PCB overlays without an external touch IC. Combined with XLP sleep and the small MV package, the part fits behind space-constrained front panels in appliances, IoT hubs, and consumer electronics, where USB updates the firmware when needed.
Recommended
Battery Charging / OTG Devices
USB On-The-Go (OTG) hosts that need to charge a phone from a battery pack use the PIC24FJ64GU202-I/MV's integrated OTG controller with battery-charge detection (BC1.2). The MCU controls a power-path IC over I2C while the on-chip USB handles negotiation, drawing <1 mA in idle. The 16 MIPS core is fast enough to run a small UI on a 7-segment LCD or status RGB LED while keeping BOM low.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GU202-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GU202-E/SS | PIC24FJ64GU202T-I/MV | PIC24FJ64GU202-E/MV | PIC24FJ32GU202-I/MV | PIC24FJ64GA702T-I/MV | PIC24FJ64GB202-I/SS |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin UQFN (MV), 4x4 mm | 28-pin UQFN (MV) | 28-pin UQFN (MV) | 28-pin UQFN (MV) | 28-pin UQFN (MV) | 28-pin UQFN (MV) | 28-pin UQFN (MV) option |
| Program Memory (ECC Flash) | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB (-50%) | 64 KB | 64 KB |
| Data RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| USB Controller | Full-Speed USB 2.0 Host/Device/OTG | Full-Speed USB 2.0 OTG | Full-Speed USB 2.0 OTG | Full-Speed USB 2.0 OTG | Full-Speed USB 2.0 OTG | No USB | No USB |
| 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 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 | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| Temperature Range | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Only Microchip 16-bit MCU in this UQFN-28 with integrated Full-Speed USB OTG (vs PIC24FJ64GA702T-I/MV)
- Larger ECC Flash than PIC24FJ32GU202 with same MV footprint (vs PIC24FJ32GU202-I/MV)
- Targeted for XLP low-power, not graphics LCD (vs PIC24FJ64GB202-I/SS)
Design Notes
USB D+/D- must be routed as a 90-ohm differential pair on the top layer, with continuous ground return and length matching within 150 mil. Place the 0.1 uF VUSB decoupling capacitor within 2 mm of the VUSB pin and avoid routing digital signals across the D+/D- pair to prevent coupling. For OTG mode, add a 5.1 kohm pull-down on D- and a 1.5 kohm software-controlled pull-up on D+, both on-chip.
Estimate: at 32 MHz active with USB active, VDD current is about 15-22 mA; in deep-sleep with RTCC it drops below 1 uA. Use a 10 uF + 0.1 uF decoupling pair on VDD and tie the central exposed pad (EP) to a 4 x 4 mm ground pour with at least 4 thermal vias to the inner ground plane for heat spreading. Avoid routing VUSB from the same ferrite as a switching converter - use a dedicated LDO (e.g. MCP1700) for clean USB signaling.
When using the CTMU for capacitive touch, place a guard ring driven by a low-impedance GPIO around the touch pad and route the trace no longer than 100 mm to limit noise pickup. ADC inputs should be bypassed with 100 nF ceramics and the reference voltage (VREF+) decoupled with 10 uF if used as absolute reference. For I2C buses over 100 mm, add 4.7 kohm pull-ups and a series resistor near the source for EMI control.
Do not exceed the 3.6 V VDD absolute maximum, even during hot-plug events; the USB VBUS pin is 5 V tolerant only when VDD is present. Always configure the JTAG pins (PGED1/PGEC1) as analog-disabled when not debugging, or they will source/sink unwanted current. When migrating code from PIC24FJ64GA702 to PIC24FJ64GU202, ensure the USB stack is added and that the VUSB pin is properly decoupled.
Compliance Information
RoHS and lead-free per Microchip product page; -40C to +85C industrial temperature grade; AEC-Q100 qualification is not stated - choose Q-qualified part variants for automotive.
