USER MANUAL
PTM 216B – BLUETOOTH
®
PUSHBUTTON TRANSMITTER MODULE
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F-710-017, V1.0
PTM 216B User Manual | v1.0 | February 2022 | Page 33/86
6.2.8
Password authentication (PWD_AUTH) command
The protected memory area can be accessed only after successful password verification
via the PWD_AUTH command.
The PWD_AUTH command takes the password as parameter and, if successful, returns the
password authentication acknowledge, PACK.
Figure 25 below shows the password authentication sequence.
Figure 25 – Password authentication sequence
After successful authentication, the password can be changed by writing the new password
to memory page
0xE5
.
Note that a read access to page
0xE5
always return
0x00000000
, i.e. it is not possible to read
out the current PIN code.