SRT512 datasheet(31/46 Pages) STMICROELECTRONICS

部件名	SRT512

功能描述	13.56 MHz short-range contactless memory chip with 512-bit EEPROM and anticollision functions

PDF	46 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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31 / 46 page

SRT512

SRT512 commands

31/46

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

Chip_ID

SOF

Chip_ID

CRCL

CRCH

EOF

AI07671

8 bits

AI13510b

Reader

SRT512

SOF

Chip_ID

CRCL CRCH EOF

<-t0-> <-t1->

SOF

0Eh

CRCL

CRCH EOF

Chip_ID

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