AT21CSMK100 Atmel Single-Wire Serial EEPROM USB Evaluation Kit User Guide
Atmel-8993-SEEPROM-AT21CSMK100-UserGuide
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Once the ATMembase and Daughter Board are connected, the user must then install a device to be used as the
Device Under Test (DUT) for the Evaluation Kit. Please refer to
for supported devices for the Evaluation
kit.
When the AT21CSMK100 Evaluation Kit is shipped, there is a DUT already installed
in the Daughter Board socket and the latest version of the ATMembase firmware
programmed.
Figure 4. AT21CS01 in SOT23 Socket
illustrates an AT21CS01 DUT in the Daughter Board 3 lead SOT-23 socket. Note that the latch is not
closed in order to illustrate the DUT and the latch should be closed for proper DUT installation.
Due to the small size of the 3 lead SOT-23 package, it is recommended to use twee-
zers in order to properly install a DUT in the Daughter Board socket.
The firmware of the Graphical UI utilizes the AT21CS Series Reset and Discovery Response in order to determine
whether the DUT is installed correctly in the Daughter Board socket. If the Discovery Response is not seen by the
master (ATMembase), an error message is displayed in the Graphical UI stating that the DUT is not installed
properly. For more information related to DUT Discovery Response, please refer to the
Single-Wire Protocol devices only need two pins in order to communicate (SI/O and GND). These signals can be
seen in
. Pin 5 of the H1 header is the SI/O pin and Pin 9 of the H1 header is GND. Header H1 can be
seen in greater detail in the
AT21CS01 Single-Wire Daughter Board Schematic
. These pins can be used to
capture Single-Wire protocol using an oscilloscope or any other tool designed to capture waveforms.
Figure 5. DUT Signals
GND
SI/O
