M24LR04E-R datasheet(111/142 Pages) STMICROELECTRONICS

111 / 142 page

M24LR04E-R

Command codes

Doc ID 022208 Rev 5

111/142

26.20

Fast Read Multiple Block

On receiving the Fast Read Multiple Block command, the M24LR04E-R reads the selected

blocks and sends back their value in multiples of 32 bits in the response. The blocks are

numbered from 00h to 1FFh in the request and the value is minus one (–1) in the field. For

example, if the “Number of blocks” field contains the value 06h, seven blocks are read. The

maximum number of blocks is fixed to 32 assuming that they are all located in the same

sector. If the number of blocks overlaps sectors, the M24LR04E-R returns an error code.

The Protocol_extension_flag should be set to 0 for the M24LR04E-R to operate correctly.

The Option_flag is supported. The data rate of the response is multiplied by 2.

The subcarrier_flag should be set to 0, otherwise the M24LR04E-R answers with an error

code.

Request parameters:

●

Request flag

●

UID (Optional)

●

First block number

●

Number of blocks

Response parameters:

●

Sector security status if Option_flag is set (see Table 96)

●

N block of data

Table 94.

Fast Read Multiple Block request format

Request

SOF

Request_

flags

Fast

Read

Multiple

Block

IC Mfg

code

UID(1)

Gray means that the field is optional.

First

block

number

Number

blocks

CRC16

Request

EOF

8 bits

C3h

02h

64 bits

8 bits

16 bits

Table 95.

Fast Read Multiple Block response format when Error_flag is NOT set

Response

SOF

Response_

flags

Sector

security

status(1)

Gray means that the field is optional.

Data

CRC16

Response

EOF

8 bits

8 bits(2)

Repeated as needed.

32 bits(2)

16 bits

Table 96.

Sector security status if Option_flag is set

Reserved for future use.

All at 0.

Password

control bits

Read / Write

protection bits

0: Current sector not locked

1: Current sector locked

M24LR04E-R 数据表(PDF) 111 Page - STMicroelectronics

M24LR04E-R 数据表(HTML) 111 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载

链接网址

M24LR04E-R 数据表(PDF) 111 Page - STMicroelectronics

M24LR04E-R 数据表(HTML) 111 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表 下载

链接网址

数据表下载