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SRIX4K bảng dữ liệu(PDF) 35 Page - STMicroelectronics

tên linh kiện SRIX4K
Giải thích chi tiết về linh kiện  13.56 MHz short-range contactless memory chip with 4096-bit EEPROM, anticollision and anti-clone functions
PDF  50 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SRIX4K bảng dữ liệu(HTML) 35 Page - STMicroelectronics

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SRIX4K
SRIX4K commands
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9.7
READ_BLOCK(Addr) command
Command Code = 08h
On receiving the READ_BLOCK command, the SRIX4K reads the desired block and returns
the 4 data Bytes contained in the block. Data Bytes are transmitted with the Least
Significant Byte first and each byte is transmitted with the least significant bit first.
The address byte gives access to the 128 blocks of the SRIX4K (addresses 0 to 127).
READ_BLOCK commands issued with a block address above 127 will not be interpreted
and the SRIX4K will not return any response, except for the System area located at address
255.
The SRIX4K must have received a SELECT() command and be switched to SELECTED
state before any READ_BLOCK() command can be accepted. All READ_BLOCK()
commands sent to the SRIX4K before a SELECT() command is issued are ignored.
Figure 41.
READ_BLOCK request format
Request parameter:
–
ADDRESS: block addresses from 0 to 127, or 255
Figure 42.
READ_BLOCK response format
Response parameters:
–
DATA 1: Less significant data Byte
–
DATA 2: Data Byte
–
DATA 3: Data Byte
–
DATA 4: Most significant data Byte
Figure 43.
READ_BLOCK frame exchange between Reader and SRIX4K
SOF
READ_BLOCK
CRCL
CRCH
EOF
AI07684
08h
8 bIts
8 bits
8 bits
ADDRESS
SOF
DATA 1
CRCL
CRCH
EOF
AI07685
8 bits
DATA 2
DATA 3
DATA 4
8 bIts
8 bIts
8 bIts
8 bIts
8 bIts
S
O
F
DATA
1
AI07686b
DATA
2
DATA
3
DATA
4
Reader
SRIX4K
CRCL CRCH
E
O
F
<-t0-><-t1->
S
O
F
08h
CRCL CRCH
E
O
F
ADDR



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