Sequence a sequence b, Table 11-2. run to powerdown state timing table, Symbol parameter comments min typ max units t – Rainbow Electronics AT73C246 User Manual
Page 30: Vddx shutdown time vddx is off in run state
30
11050A–PMAAC–07-Apr-10
AT73C246
Figure 11-3. AT73C246 - RUN to POWERDOWN state Supplies Shutdown timing diagram.
Note:
1. VDDx activity during RUN state is set by Bit7 of register VDDx_CTRL.
Table 11-2.
RUN to POWERDOWN state timing table
Symbol
Parameter
Comments
Min
Typ
Max
Units
T
PWRDOWN
POWERDOWN Event detection
time
58
62
66
µs
T
OFF_AUDIO
Audio CODEC Shutdown Time
Audio CODEC is OFF or Power Fail
Occurs
58
62
66
µs
Audio CODEC is ON
486
512
538
ms
T
OFF_VDDx
VDDx SHUTDOWN Time
VDDx is OFF in RUN state
58
62
66
µs
VDDx is ON in RUN state
4.8
5.2
5.4
ms
RUN
STATE
SUPPLIES SHUTDOWN
POWEROFF
EVENT
POWERDOWN
STATE
T
PWRDOWN
T
OFF_AUDIO
T
OFF_VDD3
V
DD3
(3.3V)
V
DD1
(1.2V)
V
DD2
(1V)
3.3V
1.2V
1V
RSTB
V
DD0
(1.85V)
T
OFF_VDD1
T
OFF_VDD0
T
OFF_VDD2
V
DD4
(CODEC)
T
OFF_VDD4
1.85V
RUN
STATE
SUPPLIES SHUTDOWN
POWEROFF
EVENT
POWERDOWN
STATE
T
PWRDOWN
T
OFF_AUDIO
T
OFF_VDD2
V
DD2
(1V)
V
DD1
(1.2V)
V
DD3
(3.3V)
1V
1.2V
3.3V
RSTB
V
DD0
(1.85V)
T
OFF_VDD1
T
OFF_VDD0
T
OFF_VDD3
V
DD4
(CODEC)
T
OFF_VDD4
1.85V
SEQUENCE A
SEQUENCE B