ST25TB04K datasheet(28/47 Pages) STMICROELECTRONICS

부품명	ST25TB04K

상세설명	13.56 MHz short-range contactless memory chip with 4096-bit EEPROM and anticollision functions

PDF	47 Pages

Scroll/Zoom	100%

제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

Logo

28 / 47 page

8.6

Reset_to_inventory() command

Command code = 0Ch

On receiving the Reset_to_inventory() command, all ST25TB04K devices in Selected state revert to Inventory

state. The concerned ST25TB04K devices are thus resubmitted to the anticollision sequence. This command is

useful when two ST25TB04K 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 ST25TB04K devices that are not in Selected state ignore the Reset_to_inventory() command.

Figure 33. Reset_to_inventory request format

SOF

RESET_TO_INVENTORY

CRCL

CRCH

EOF

0Ch

8 bits

Request parameter:

•

No parameter

Figure 34. Reset_to_inventory response format

No Response

Figure 35. Reset_to_inventory frame exchange between reader and ST25TB04K

SOF

0Ch

CRCL CRCH EOF

Reader

ST25TBxxx

No Response

ST25TB04K

Reset_to_inventory() command

DS11364 - Rev 7

page 28/47

ST25TB04K 데이터시트(PDF) 28 Page - STMicroelectronics