MC10XS3412 Datasheet, PDF (26/51 Pages) Freescale Semiconductor, Inc – Quad High Side Switch (Dual 10mΩ, Dual 12mΩ)

FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
OPERATIONAL MODES
The 10XS3412 has four operating modes: Sleep, Normal,
Fail-safe and Fault. Table 5 and Figure 11 summarize details
contained in succeeding paragraphs.
The Figure 10 describes an internal signal called IN_ON[x]
depending on IN[x] input.
t_IN
IN[x]
IN_ON[x]
Figure 10. IN_ON[x] internal signal
The 10XS3412 transits to operating modes according to
the following signals:
• wake-up = RST or WAKE or IN_ON[0] or IN_ON[1] or
IN_ON[2] or IN_ON[3],
• fail = (V_DD Failure and VDD_FAIL_en) or (Watchdog
timeout and FSI input not shorted to ground),
• fault = OC[0:3] or OT[0:3] or SC[0:3] or UV or (OV and
OV_dis).
Table 5. 10XS3412 Operating Modes
Mode wake-up fail fault
Comments
Sleep
0
Normal
1
Fail-Safe 1
Fault
1
x = Don’t care.
x x Device is in Sleep Mode. All
outputs are OFF.
0 0 Device is currently in Normal
Mode. Watchdog is active if
enabled.
1 0 Device is currently in Fail-safe
mode due to watchdog timeout
or V_DD Failure conditions. The
output states depend on the
corresponding input in case
the FSI is open.
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).
(wake-up=0)
Sleep
(fail=0) and (wake-up=1) and (fault=0)
Fail-Safe
(wake-up=1) and
(fail=1)
and (fault=0)
(wake-up=0)
(wake-up=1)
and (fault=1)
(wake-up=0)
(fail=1) and
(wake-up=1)
and (fault=1)
Fault
(fail=1) and
(wake-up=1)
and (fault=0)
(fail=0) and
(wake-up=1)
and (fault=1)
(fail=0) and
(wake-up=1)
and (fault=0)
Normal
(fail=0) and (wake-up=1) and (fault=0)
(fail=1) and (wake-up=1) and (fault=0)
Figure 11. Operating Modes
10XS3412
26
Analog Integrated Circuit Device Data
Freescale Semiconductor