LRI512 datasheet(17/54 Pages) STMICROELECTRONICS

部件名	LRI512

功能描述	Memory TAG IC 512 bit High Endurance EEPROM 13.56MHz, ISO 15693 Standard Compliant with E.A.S.

PDF	54 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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LRI512

LRI512 STATES

A LRI512 can be in one of four states:

– Power-off

– Ready

– Quiet

–Selected

Transitions between these states are specified in

Figure 30 and Table 9.

Power-off State

The LRI512 is in the Power-off state when it does

not receive enough energy from the VCD.

Ready State

The LRI512 is in the Ready state when it receives

enough energy from the VCD. It shall answer any

Request where the Select_Flag is not set.

Quiet State

When in the Quiet State, the LRI512 answers any

Request other than an Inventory Request with the

Address_Flag set.

Selected State

In the Selected State, the LRI512 answers to any

Request in all modes:

– Request in Select mode with the Select flag set

– Request in Addressed mode if the UID match.

– Request in Non-Addressed mode as it is gener-

al Request.

Table 9. LRI512 Response, Depending on the States of the Request Flags

Flags

Address_Flag

Select_Flag

Addressed

Non Addressed

Selected

Non Selected

LRI512 in Ready or Selected state (Devices

in Quiet state do not answer)

LRI512 in Selected state

LRI512 in Ready, Quiet or Selected state (the

device which match the UID)

Error (03h)

LRI512 数据表(PDF) 17 Page - STMicroelectronics

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