M24LR04E-R datasheet(19/142 Pages) STMICROELECTRONICS

Part #	M24LR04E-R

Description	4-Kbit EEPROM with password protection, dual interface & energy harvesting: 400 kHz I²C bus & ISO 15693 RF protocol at 13.56 MHz

PDF	142 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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19 / 142 page

M24LR04E-R

User memory organization

Doc ID 022208 Rev 5

19/142

User memory organization

The M24LR04E-R is divided into 4 sectors of 32 blocks of 32 bits, as shown in Table 5.

Figure 6 shows the memory sector organization. Each sector can be individually read-

and/or write-protected using a specific password command. Read and write operations are

possible if the addressed data are not in a protected sector.

The M24LR04E-R also has a 64-bit block that is used to store the 64-bit unique identifier

(UID). The UID is compliant with the ISO 15963 description, and its value is used during the

anticollision sequence (Inventory). This block is not accessible by the user and its value is

written by ST on the production line.

The M24LR04E-R includes an AFI register that stores the application family identifier, and a

DSFID register that stores the data storage family identifier used in the anticollision

algorithm.

The M24LR04E-R has four 32-bit blocks that store an I2C password plus three RF password

codes.

Figure 5.

Circuit diagram

M24LR04E-R Datasheet(PDF) 19 Page - STMicroelectronics