ETRX357USB Telegesis Ltd, ETRX357USB Datasheet - Page 5

• Manufacturer Part Number: ETRX357USB
• Description: ZIGBEE USB STICK
• Manufacturer: Telegesis Ltd
• Series: -r

Specifications of ETRX357USB

• Function: Transceiver, ZigBee
• Modulation Or Protocol: 802.15.4 Zigbee
• Frequency: 2.4GHz
• Applications: ISM
• Interface: USB
• Sensitivity: -
• Power - Output: -
• Data Rate - Maximum: -
• Features: -
• Voltage - Supply: 4.75 V ~ 5.25 V
• Package / Case: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 920-1012

5 ETRX357 I/O Connectivity
The I/Os of the built-in ETRX357 are connected as follows:
Important Note: The lines for hardware handshaking are connected, so even when not using
hardware handshaking PB3 should never be defined as an output as this would drive against the
incoming CTS signal via a 1k resistor and increase the current consumption.
6 Firmware upgrades
The firmware which is loaded onto the embedded ETRX357 Module can be upgraded over the air
or via the virtual COM port as described in the ETRX357 Development Kit manual.
Alternatively, access to the SIF programming interface is possible by opening the cover on the side
of the ETRX357USB ZigBee USB stick.
©2011 Telegesis (UK) Ltd
PA6 is connected to the LED (drive PA6 low to sink LED current).
PB3 is the CTS input for the ETRX357. Make sure PB3 is never defined as an output.
PB4 is the RTS input for the ETRX357.
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ETRX357USB AND ETRX357USB-LRS
ETRX357USB Product Manual (Rev 1.00)