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SRT512 Scheda tecnica(PDF) 31 Page - STMicroelectronics

Il numero della parte SRT512
Spiegazioni elettronici  13.56 MHz short-range contactless memory chip with 512-bit EEPROM and anticollision functions
PDF  46 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SRT512 Scheda tecnica(HTML) 31 Page - STMicroelectronics

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SRT512
SRT512 commands
Doc ID 13277 Rev 4
31/46
8.4
Select(Chip_ID) command
Command code = 0Eh
The Select() command allows the SRT512 to enter the Selected state. Until this command is
issued, the SRT512 will not accept any other command, except for Initiate(), Pcall16() and
Slot_marker(). The Select() command returns the 8 bits of the Chip_ID value. An SRT512 in
Selected state, that receives a Select() command with a Chip_ID that does not match its
own is automatically switched to Deselected state.
Figure 31.
Select request format
Request parameter:
●
8-bit Chip_ID stored during the anticollision sequence
Figure 32.
Select response format
Response parameters:
●
Chip_ID of the selected tag. Must be equal to the transmitted Chip_ID
Figure 33.
Select frame exchange between reader and SRT512
SOF
Select
CRCL
CRCH
EOF
AI07677b
0Eh
8 bits
8 bits
8 bits
Chip_ID
SOF
Chip_ID
CRCL
CRCH
EOF
AI07671
8 bits
8 bits
8 bits
AI13510b
Reader
SRT512
SOF
Chip_ID
CRCL CRCH EOF
<-t0-> <-t1->
SOF
0Eh
CRCL
CRCH EOF
Chip_ID



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