Datasheet

Analog Integrated Circuit Device Data
32 Freescale Semiconductor
10XSC425
Figure 12. Operating Modes
6.2.1 Sleep Mode
The 10XSC425 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 and IN_ON[0:3] 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].
Table 6. 10XSC425 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 timeout 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 autoretry 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 0 = 1)
and (fault = 1)
(fail = 0) and
(wake-up = 1)
and (fault = 0)
(fail = 1) and
(wake-up = 1)
and (fault = 0)