M24LR04E-R datasheet(112/142 Pages) STMICROELECTRONICS

112 / 142 page

Command codes

M24LR04E-R

112/142

Doc ID 022208 Rev 5

Response parameter:

●

Error code as Error_flag is set:

–

03h: the option is not supported

–

10h: block address not available

–

15h: block read-protected

When configured in the RF busy mode, the RF WIP/BUSY pin is tied to 0 from the SOF that

starts the Fast Read Multiple Block command to the end of the M24LR04E-R response.

When configured in the RF write in progress mode, the RF WIP/BUSY pin remains in high-Z

state.

26.21

Inventory Initiated

Before receiving the Inventory Initiated command, the M24LR04E-R must have received an

Initiate or a Fast Initiate command in order to set the Initiate_ flag. If not, the M24LR04E-R

does not answer to the Inventory Initiated command.

On receiving the Inventory Initiated request, the M24LR04E-R runs the anticollision

sequence. The Inventory_flag must be set to 1. The meaning of flags 5 to 8 is given in

Table 29.

The request contains:

●

the flags,

●

the Inventory Command code,

●

the AFI if the AFI flag is set,

●

the mask length,

●

the mask value,

●

the CRC.

The M24LR04E-R does not generate any answer in case of error.

Table 97.

Fast Read Multiple Block response format when Error_flag is set

Response SOF

Response_flags

Error code

CRC16

Response EOF

8 bits

16 bits

Figure 72.

Fast Read Multiple Block frame exchange between VCD and M24LR04E-R

VCD

SOF

Fast Read

Multiple Block

request

EOF

M24LR04E-R

<-t1-> SOF

Fast Read

Multiple Block

response

EOF

M24LR04E-R 数据表(PDF) 112 Page - STMicroelectronics

M24LR04E-R 数据表(HTML) 112 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