LRI512 Просмотр технического описания (PDF) - STMicroelectronics

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LRI512

Memory TAG IC 512 bit High Endurance EEPROM 13.56MHz, ISO 15693 Standard Compliant with E.A.S.

STMicroelectronics 

LRI512

READ SINGLE BLOCK

Command Code = 0x20

When receiving the Read Single Block Command,

the LRI512 read the requested block and send

back its 32 bits value in the Response.The

Option_Flag is supported.

Request parameter (Table 24):

– Option_Flag

– UID (Optional)

– Block Number

Response parameter (Table 25):

– Block Locking Status if Option_Flag is set

– 4 bytes of Block Data

Response parameter (Table 27):

– Error Code as Error_Flag is set

Table 24. Read Single Block Request Format

Request

SOF

Request

Flags

Read Single

Block

UID

8 bits

0x20

64 bits

Block

Number

8 bits

CRC16

16 bits

Request

EOF

Table 25. Read Single Block Response Format when Error_Flag is NOT Set

Response

SOF

Response

Flags

Block

Locking

Status

Data

CRC16

8 bits

8 bits

32 bits

16 bits

Response

EOF

Table 26.

b7 (bit b0 for ISO)

0: Current Block not locked

1: Current Block locked

b6

b5

b4

b3

b2

b1

b0

Reserved for future used. All at 0

Table 27. Read Single Block Response Format when Error_Flag is Set

Response SOF Response_Flags

Error Code

CRC16

8 bits

8 bits

16 bits

Response EOF

Figure 34. READ Single Block Frame Exchange between VCD and LRI512

VCD

LRI512

SOF

Read Single

Block Request

EOF

t1

SOF

Read Single

Block Response

EOF

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