RNBD350UE - Bluetooth module Microchip - Free user manual and instructions
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| Product Type | Bluetooth Low Energy Module |
| Brand | Microchip |
| Model | RNBD350UE |
| Bluetooth Version | Bluetooth 5.0 |
| Interface | UART, SPI, I2C, GPIO |
| Dimensions | 10 x 15 x 2 mm |
| Weight | 1 g |
| Supply Voltage | 3.3 V DC |
| Current Consumption | 5 mA (active), 1 µA (sleep) |
| Transmit Power | +8 dBm (max) |
| Receiver Sensitivity | -96 dBm |
| Range | Up to 100 m (line of sight) |
| Antenna | Integrated PCB antenna |
| Operating Temperature | -40°C to +85°C |
| Memory | 256 KB Flash, 128 KB RAM |
| Safety Certifications | FCC, CE, IC |
| Maintenance | None required; keep dry and clean |
| Spare Parts | Not applicable (integrated module) |
| General Information | Designed for IoT applications, firmware upgradable via UART |
Frequently Asked Questions - RNBD350UE Microchip
How do I pair the RNBD350UE with a smartphone?
Enable Bluetooth on your smartphone and scan for devices. The RNBD350UE appears as RNBD350 by default. Select it and confirm pairing. The module defaults to no PIN.
What is the maximum range of the module?
The typical range is up to 100 meters in open air with line of sight. Indoor range may vary due to obstacles.
Can I use the module with a 5V supply?
No, the RNBD350UE operates at 3.3V. Using 5V may damage the module. Use a voltage regulator if needed.
How do I update the firmware?
Connect the module via UART and use Microchip's Firmware Update Tool or send raw binary data over the serial interface. Refer to the datasheet for detailed steps.
What is the power consumption in sleep mode?
In deep sleep mode, the module consumes approximately 1 µA. This makes it suitable for battery-powered applications.
Does the module support Bluetooth mesh?
No, the RNBD350UE supports Bluetooth 5.0 point-to-point and broadcast modes but not mesh networking.
How many GPIO pins are available?
The module provides up to 8 GPIO pins that can be configured for input, output, or alternate functions.
What is the default baud rate for UART?
The default UART baud rate is 115200 bps with 8 data bits, no parity, and 1 stop bit (8N1).
Is the module RoHS compliant?
Yes, the RNBD350UE is RoHS compliant and lead-free.
Can I use an external antenna?
The RNBD350UE has an integrated PCB antenna. It does not have a connector for an external antenna. For applications requiring higher gain, consider the RNBD350PE variant with u.FL connector.
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USER MANUAL RNBD350UE Microchip
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Product information
Brand : Microchip
Model : RNBD350UE
Category : Bluetooth module