M24LR16E-R datasheet(68/143 Pages) STMICROELECTRONICS

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Modes

M24LR16E-R

68/143

Doc ID 018932 Rev 8

Modes

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.

M24LR16E-R 数据表(PDF) 68 Page - STMicroelectronics