SRT512 datasheet(33/46 Pages) STMICROELECTRONICS

Part #	SRT512

Description	13.56 MHz short-range contactless memory chip with 512-bit EEPROM and anticollision functions

PDF	46 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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33 / 46 page

SRT512

SRT512 commands

Doc ID 13277 Rev 4

33/46

8.6

Reset_to_inventory() command

Command code = 0Ch

On receiving the Reset_to_inventory() command, all SRT512 devices in Selected state

revert to Inventory state. The concerned SRT512 devices are thus resubmitted to the

anticollision sequence. This command is useful when two SRT512 devices with the same 8-

bit Chip_ID happen to be in Selected state at the same time. Forcing them to go through the

anticollision sequence again allows the reader to generates new Pcall16() commands and

so, to set new random Chip_IDs.

The Reset_to_inventory() command does not generate a response.

All SRT512 devices that are not in Selected state ignore the Reset_to_inventory()

command.

Figure 37.

Reset_to_inventory request format

Request parameter:

●

No parameter

Figure 38.

Reset_to_inventory response format

Figure 39.

Reset_to_inventory frame exchange between reader and SRT512

SOF

Reset_to_inventory

CRCL

CRCH

EOF

AI07682b

0Ch

8 bits

AI07680

No Response

SOF

0Ch

CRCL

CRCH EOF

AI13512b

Reader

SRT512

No Response

SRT512 Datasheet(PDF) 33 Page - STMicroelectronics

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