M24LR16E-R Datasheet, PDF (68/143 Pages) STMicroelectronics – 16-bit EEPROM with password protection, dual interface & energy harvesting: 400 kHz I²C bus & ISO 15693 RF protocol at 13.56 MHz

Modes
18 Modes
M24LR16E-R
The term “mode” refers to the mechanism used in a request to specify the set of
M24LR16E-Rs that answers the request.
18.1
Addressed mode
When the Address_flag is set to 1 (Addressed mode), the request contains the Unique ID
(UID) of the addressed M24LR16E-R.
Any M24LR16E-R that receives a request with the Address_flag set to 1 compares the
received Unique ID to its own. If it matches, then the M24LR16E-R executes the request (if
possible) and returns a response to the VCD as specified in the command description.
If the UID does not match, then it remains silent.
18.2
Non-addressed mode (general request)
When the Address_flag is cleared to 0 (Non-Addressed mode), the request does not contain
a Unique ID. Any M24LR16E-R receiving a request with the Address_flag cleared to 0
executes it and returns a response to the VCD as specified in the command description.
18.3
Select mode
When the Select_flag is set to 1 (Select mode), the request does not contain an M24LR16E-
R Unique ID. The M24LR16E-R in the Selected state that receives a request with the
Select_flag set to 1 executes it and returns a response to the VCD as specified in the
command description.
Only M24LR16E-Rs in the Selected state answer a request where the Select_flag set to 1.
The system design ensures in theory that only one M24LR16E-R can be in the Select state
at a time.
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Doc ID 018932 Rev 8