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EV20F92A Serial Memory SPI Evaluation Kit User’s Guide
DS20006685A-page 26
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3.10.3 Program
The Program feature can be used to write the GUI array buffer to the installed Serial
EEPROM memory array. When the
Program button is pressed, the current internal
GUI buffer will be written to the Serial EEPROM memory. The Program feature must
be used when a cell is updated (
green font), or when a file (.hex or .txt) is loaded. If the
Program feature is not used, the data in the internal GUI buffer will not be written to the
installed Serial EEPROM.
When the Program feature is used to program the Serial EEPROM memory array, that
entire memory region will be written with the current data in the internal GUI buffer
rather than only the changed values. If a specific data byte or bytes are to be pro-
grammed, it is recommended to use the Write feature by pressing the
Write button (see
Section 3.10.5 “Write” for additional information).
3.10.4 Read
The Read feature allows the user to read the entire Serial EEPROM memory array, a
specific word address or a range of word addresses. When the
Read button is pressed,
a pop-up window appears, allowing the user to enter details related to the read opera-
tion to be performed.
The user can input a starting word address using the Memory Address field that the
read operation will start at (in hexadecimal) and the Read Count or the amount of bytes
to be read. Once all the input data has been filled, press the
Read button to start the
read operation.
Once the read operation is complete, the data read from the device will be displayed in
the box below the
Read and Close buttons. The user can perform as many read oper-
ations as preferred from this window. For each new read operation, the data field will
be re-written using the data read from the current read operation being performed.
Once all read operations are completed, the user can close the window by pressing the
Close button.
Note: The Read feature will not update the GUI memory array or GUI Security
register. To update the internal GUI buffer, use the Refresh feature by
pressing the
Refresh button (see the Section 3.10.1 “REFRESH” for
additional information).
Note: The user may be able to change the starting address, but the GUI will limit
the word address to the boundary of that region.