RN-111B-E Roving Networks Inc, RN-111B-E Datasheet - Page 15

• Manufacturer Part Number: RN-111B-E
• Description: MODULE WIFLY 802.11B SMA
• Manufacturer: Roving Networks Inc

Specifications of RN-111B-E

• Frequency: 2402MHz ~ 2480MHz
• Data Rate - Maximum: 200kbps
• Modulation Or Protocol: DSSS
• Power - Output: 12dBm
• Sensitivity: -93dBm
• Voltage - Supply: 3.3V
• Current - Receiving: 40mA
• Current - Transmitting: 120mA
• Data Interface: PCB, Surface Mount
• Memory Size: 500kBytes Flash
• Antenna Connector: SMA
• Package / Case: Module
• Wireless Frequency: 2.402 GHz to 2.48 GHz
• Interface Type: UART, SPI
• Board Size: 38 mm x 26 mm x 5 mm
• Modulation: CCK, DBPSK, DQPSK, DSSS
• Security: 128 bit WEP, WPA, TKIP, AES
• Operating Voltage: 3 VDC to 16 VDC
• Output Power: 15 mW
• Antenna: Chip, U.FL, SMA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Applications: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 740-1023

There are 4 inputs available to wake the module from sleep, SENS1-4.
To enable 1 of these inputs, use: set sys trigger <0,1,2,3,4>. 0 disables.
Only the SENS1 input has a resistor divider ( 24K in series with 10K to GROUND) which
allows this pin to tolerate 3V logic. The other sensor pins DO NOT, so care must be taken.
WARNING: Under no conditions should the voltage on any SENS2-8 input exceed
1.2VDC. Permanent damage to the module will result.
The SENS1-4 inputs have a small current source that is activated in sleep mode. This source
is approximately 100nA, and will cause the input to float up to about 1.2VDC.
IF SENSE1
for example, is enabled, pulling the SENS1 pin to GROUND will wake the device. An open
drain FET is a good device to tie to the pin. The threshold is about 500mV. Additional