RN-21-U Roving Networks Inc, RN-21-U Datasheet - Page 5

• Manufacturer Part Number: RN-21-U
• Description: MODULE BLUETOOTH 2.0/EDR CLASS1
• Manufacturer: Roving Networks Inc

Specifications of RN-21-U

• Frequency: 2.4GHz Center
• Data Rate - Maximum: 921kBaud
• Modulation Or Protocol: FHSS
• Applications: Bluetooth v2.0
• Power - Output: 16dBm
• Sensitivity: -86dBm
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Receiving: 60mA
• Current - Transmitting: 100mA
• Data Interface: PCB, Surface Mount
• Memory Size: 8MByte Flash
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Module Dimensions
Design Concerns
0.8 mm (pad)
1. Reset circuit. RN-21 contains a 1k pull-down to GND, the polarity of reset is active HIGH.
2. Factory reset PIO4. It is a good idea to connect this pin to a switch, or jumper, or resistor, so it can be
3. Connection status. PIO5 is available to drive an LED, and blinks at various speeds to indicate status.
4. HCI mode. The RN21 module must be loaded with special firmware to run in HCI mode. When in HCI
1.27 mm
A power on reset circuit with delay is OPTIONAL on the reset pin of the module. It should only be required
if the input power supply has a very slow ramp, or tends to bounce or have instability on power up.
a microcontroller or embedded CPU IO is available to generate reset once power is stable. If not, there
are many low cost power supervisor chips available, such as MCP8010.
accessed. This pin can be used to reset the module to FACTORY DEFAULTS and is often critical in
situations where the module has been misconfigured.
PIO2 is an output which directly reflects the connection state, it goes HIGH when connected, and LOW
otherwise.
mode the standard SPP/DUN profiles are disabled.
809 University Avenue
PCB LAYOUT
9.87 mm
0.94 mm (pad)
1.27 mm
RN21
15.0 mm
•
Los Gatos, CA 95032
0.75 mm
0.75 mm
1.32 mm
0.68 mm (pad)
21.82 mm
•
Tel [phone]
1.85 mm
1.85 mm
• [e-mail]
DS-RN21-V2 3/25/2010
RN21
RN21
MODULE DIMENSIONS
15.4 mm
15.4 mm
22.0 mm
22.0 mm
22.0 mm
22.0 mm
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