UM0853 datasheet(25/56 Pages) STMICROELECTRONICS

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UM0853

How to control the RF and I²C channels from your screen

Doc ID 16609 Rev 3

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Figure 40.

Sector 0 block 0

From 0001 to 0005 reads the blocks 1, 2, 3, 4, 5 in sector 0 as shown in Figure 41.

Figure 41.

Sector 0 blocks 1 to 5

How to read the memory area with the RF Interface:

●

The first column (sector) indicates the sector read.

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The second column (block) indicates the address of the block read.

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The third column (data) shows the contents of the M24LRxx at the specified

addresses.

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The fourth column (sss) gives the sector security status.

Example: in Figure 41 above, the data 49 46 00 01 means:

49 (49h Hex) is the first piece of data read in block number 0002 (sector 0)

46 (46h Hex) is the second piece of data read in block number 0002 (sector 0)

00 (00h Hex) is the third piece of data read in block number 0002 (sector 0)

01 (01h Hex) is the fourth piece of data read in block number 0002 (sector 0)

3.2.8

Write command

The Write button launches RF requests to write data to the M24LRxx EEPROM from the

block address specified in the from field to the block address entered in the to field.

In Figure 42, the Write command fills the blocks 0000h to 001Fh with “A1 34 09 67”.

Figure 42.

Initiating a write operation

You can choose to write the same byte four times by changing the value in the Fill with field.

In the example below, the byte 55 is to be written four times.

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