ST25DV04KC datasheet(40/203 Pages) STMICROELECTRONICS

40 / 203 page

RF_WRITE:

•

When RF_WRITE is activated, a pulse of duration IT_TIME is emitted at completion of a valid RF write

operation in EEPROM (after EOF of ST25DVxxKC response).

•

Following commands trigger the RF_WRITE interrupt after a valid write operation in EEPROM:

–

Write Single Block

–

Extended Write Single Block

–

Write Multiple Block

–

Extended Write Multiple Block

–

Lock Block

–

Extended Lock Block

–

Write AFI

–

Lock AFI

–

Write DSFID

–

Lock DSFID

–

Write Configuration

–

Write Password

•

Note that writing in dynamic registers or fast transfer mode mailbox does not trigger RF_WRITE interrupt (no

write operation in EEPROM).

Figure 23. RF_WRITE chronogram

1) VCD sends a write command and ST25DVxxKC replies after write completed.

GPO/RF_WRITE generates a pulse during IT_TIME after ST25DVxxKC response.

5) VCD sends any command and ST25DV GPO/RF_ stays quiet (command not for this VICC, or quiet state).

RF_ACTIVITY remains high-Z.

(m*)Wt

VCD

Command

GPO/RF_WRITE

GPO/RF_WRITE (OD)

ST25DVxxKC

Write

command

3) VCD sends a write command and ST25DV GPO/RF_ replies with error.

GPO/RF_WRITE remains high-Z.

GPO/RF_WRITE

ST25DVxxKC

Write

command

2) VCD sends a write command with option flag set to 1, and ST25DVxxKC replies after receiving EOF.

GPO/RF_WRITE generates a pulse during IT_TIME after ST25DV response.

>(m*)Wt

GPO/RF_WRITE

ST25DVxxKC

Write

command

4) VCD sends any other command than a write command. GPO/RF_WRITE remains high-Z.

GPO/RF_WRITE

ST25DVxxKC

Any other

command

ST25DV04KC ST25DV16KC ST25DV64KC

GPO

DS13519 - Rev 3

page 40/203

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