MM908E624ACDWB/R Motorola, MM908E624ACDWB/R Datasheet - Page 23

• Manufacturer Part Number: MM908E624ACDWB/R
• Description: TRIPLE HIGH-SIDE SWITCH WITH EMBEDDED MCU AND LIN
• Manufacturer: Motorola

.
.
WINDOW WATCHDOG
resistor at the WDCONF terminal. The watchdog is cleared
through by the MODE1:2 bits in the SPI Control register (refer
to
watchdog is cleared in the closed window or has not been
cleared at the end of the open window, the watchdog will
generate a reset on the
device.
(150 ms) (first watchdog clear) has no window.
Analog Integrated Circuit Device Data
Freescale Semiconductor
Table
The window watchdog is configurable using an external
A watchdog clear is only allowed in the open window. If the
Note The watchdog clear in Normal request mode
HS3ON
8, page 26).
HSxON
RST_A
Control
MODE1:2
Control
MODE1:2
terminal and reset the whole
Figure 12. High-Side HS1 and HS2 Circuitry
Figure 13. High-Side HS3 Circuitry
On/Off
Status
On/Off
Status
Overtemperature Protection
Overtemperature Protection
Current Limit Protection,
Current Limit Protection,
High-Side Driver
High-Side Driver
Charge Pump,
Charge Pump,
no watchdog clear allowed
WD timing selected by resistor on WDCONF terminal.
WD timing x 50%
Figure 14. Window Watchdog Operation
Window closed
WD period (P
VSUP2
WD
Functional Device Operation
VSUP2
)
for watchdog clear
WD timing x 50%
Window open
Functional Description
PWMIN
HSx
HS3
908E624
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