M24LR64-R-DW6TSLASH2 datasheet(61/126 Pages) STMICROELECTRONICS

部件名	M24LR64-R-DW6T/2

功能描述	64 Kbit EEPROM with password protection & dual interface: 400kHz I짼C serial bus & ISO 18000-3 mode 1 RF protocol at 13.56MHz

PDF	126 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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61 / 126 page

M24LR64-R

Modes

Doc ID 15170 Rev 8

61/126

Modes

The term “mode” refers to the mechanism used in a request to specify the set of M24LR64-

Rs that will answer 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 M24LR64-R.

Any M24LR64-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 M24LR64-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 M24LR64-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 M24LR64-

R Unique ID. The M24LR64-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 M24LR64-Rs in the Selected state answer a request where the Select_flag set to 1.

The system design ensures in theory that only one M24LR64-R can be in the Select state at

a time.

M24LR64-R-DW6T/2 数据表(PDF) 61 Page - STMicroelectronics