DM160232 Serial Memory Single-Wire Evaluation Kit User’s Guide
2018 Microchip Technology Inc.
DS20005939A-page 27
The entire Security register can be locked by either using the Program feature (see
) or using the Set Device Protection pane (see
Section 3.7 “Set Device Protection”
FIGURE 3-19:
SECURITY REGISTER
3.13
ARRAY BUTTONS
The array buttons, which are located below the GUI Security register, allow the user to
perform read and write operations to the Serial EEPROM, use the Go To Address
feature to highlight a specific word address in the GUI memory array, and also provides
various support functions.
FIGURE 3-20:
ARRAY BUTTONS
3.13.1
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, the serial number, and/or the
Security register of the Serial EEPROM. When the
READ
button is pressed, a pop-up
window appears allowing the user to enter details related of the read operation 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), the Read Count or the amount of bytes to
be read, and the user can select what read operation is to be performed (
Memory
Array
,
Serial Number
, or
Security Register
). Once all the input data has been filled,
press the
READ
button to start the read operation. A status message is included at the
bottom of the window to notify the user that the read operation is complete by displaying
“Successful”.
Note:
Once the Security register has been locked, it cannot be unlocked and is
permanently set to ROM (Read-Only-Memory).
Note:
The Read feature will not update the GUI memory array or GUI Security
register. To update the GUI, use the Refresh feature (see the
for additional information).
Note:
If the user performs a read operation to the Security register or reads the
serial number, the GUI will automatically populate the starting memory
address for the user stating at the first byte of either the writable portion
(upper 16 bytes) of the Security register or the serial number depending on
which is selected. The user can change the starting address, but the GUI
will limit the word address to the Security register boundaries.
