DM160232 Serial Memory Single-Wire Evaluation Kit User’s Guide
2018 Microchip Technology Inc.
DS20005939A-page 28
Once the read operation is complete, the data will be displayed in hexadecimal in the
Data (Hex) field. The user can perform as many read operations 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 red button (
) in the top
right hand corner of the pop-up window or pressing the
Close
button.
FIGURE 3-21:
READ OPERATION
3.13.2
Write
The Write feature allows the user to write the entire Serial EEPROM memory array, a
specific word address or a range of word addresses, and the writable portion of the
Security register. When the
WRITE
button is pressed, a pop-up window appears
allowing the user to enter details related to the write operation to be performed.
The user inputs the data that is to be written in the Data
field (in hexadecimal). The user
then selects the starting word address using the Memory Address (hex)
field that the
write operation will start at (in hexadecimal). The Count, or the number of bytes to be
written, is filled automatically based on the amount of data bytes in the “Data” field. The
user can also select whether the write operation will occur in the Serial EEPROM
memory array or the Security register.
The GUI limits write operations to the physical device boundary (address of 0x7Fh for
the memory array and address of 0x1Fh for the Security register).The write operation
will be aborted if the address boundary of that particular memory region is exceeded.
Note:
If the user performs a write operation to the Security register, the GUI will
automatically populate the memory address for the user stating at the first
byte of the writable portion (upper 16 bytes) of the Security register. The
user can change the starting word address of the write operation, but the
GUI limits the word address to the writable portion (upper 16 bytes) of the
Security register.
Close
button
