Datasheet

Analog Integrated Circuit Device Data
Freescale Semiconductor 27
07XSC200
Figure 12. Operating Modes
5.2.1 Sleep Mode
The 07XSC200 is in Sleep mode when:
•V
PWR
and V
DD
are within the normal voltage range,
• wake-up = 0,
• fail = X,
•fault = X.
This is the Default mode of the device after first applying battery voltage (V
PWR
) prior to any I/O transitions. This is also the state
of the device when the WAKE and RSTB, CLOCK_ON and IN_ON[0:1] are logic [0]. In the Sleep mode, the output and all unused
internal circuitry, such as the internal regulator, are off to minimize draw current. In addition, all SPI-configurable features of the
device are as if set to logic
[0].
In the event of an external V
PWR
supply disconnect, an unexpected current consumption may sink on the VDD supply pin (In
Sleep state). This current leakage is about 70
mA instead of 5.0 µA and it may impact the device reliability. The device recovers
its normal operational mode once V
PWR
is reconnected.
Table 5. 07XSC200 Operating Modes
Mode wake-up fail fault Comments
Sleep 0 x x
Device is in Sleep mode. All outputs are OFF.
Normal 1 0 0
Device is currently in Normal mode. Watchdog
is active if enabled.
Fail-safe 1 1 0
Device is currently in Fail-safe mode due to
watchdog time-out or V
DD
Failure conditions.
The output states are defined with the RFS
resistor connected to FSI.
Fault 1 X 1
Device is currently in fault mode. The faulted
output(s) is (are) OFF. The safe auto-retry
circuitry is active to turn-on again the output(s).
x = Don’t care.
Sleep
(fail=0) and (wake-up=1) and (fault=0)
(wake-up=0)
Fail-safe
Normal
(wake-up=0)
(fail=1) and (wake-up=1) and (fault=0)
(fail=0) and (wake-up=1) and (fault=0)
(wake-up=1) and
(fail=1)
and (fault=0)
Fault
(wake-up=0)
(wake-up=1)
and (fault=1)
(fail=0) and
(wake-up=1)
and (fault=1)
(fail=1) and
(wake-up=1)
and (fault=1)
(fail=0) and
(wake-up=1)
and (fault=0)
(fail=1) and
(wake-up=1)
and (fault=0)