MC34911G5AC Freescale, MC34911G5AC Datasheet - Page 68

• Manufacturer Part Number: MC34911G5AC
• Manufacturer: Freescale

Specifications of MC34911G5AC

• Turn Off Delay Time: 10us
• Number Of Drivers: 2
• Operating Temperature (min): -40C
• Lead Free Status / RoHS Status: Compliant

will transition high only after the interrupt is acknowledged by
a SPI read of the respective status bits.
WATCHDOG CONFIGURATION (WDCONF)
watchdog. A resistor can be connected to this pin to configure
the window watchdog period. When connected directly to
ground, the watchdog will be disabled. When this pin is left
open, the watchdog period is fixed to its lower precision
internal default value (150 ms, typical).
GROUND CONNECTIONS (AGND, PGND, LGND)
Power ground pins.
regulator.
return as in the relay-drivers and LIN interface pin.
together.
LOW SIDES (LS1 AND LS2)
outputs are short-circuit protected and include active clamp
circuitry to drive inductive loads. Due to the energy clamp
voltage on this pin, it can raise above the battery level when
switched off. The switches are controlled through the SPI and
can be configured to respond to a signal applied to the
PWMIN input pin.
DIGITAL/ANALOGS (L1 AND L2)
digital inputs, which can be sampled by reading the SPI and
used for wake-up when 33911 is in low-power mode or used
as analog inputs for the analog multiplexer. When used to
sense voltage outside the module, a 33kohm series resistor
must be used on each input.
configured to operate in cyclic sense mode. In this mode, the
high side switch is configured to be periodically turned on and
sample the wake-up inputs. If a state change is detected
between two cycles, a wake-up is initiated. The 33911 can
also wake-up from Stop or Sleep by a simple state change on
L1 and L2.
Lx pins are scaled down by a selectable internal voltage
divider and can be routed to the ADOUT0 output through the
analog multiplexer.
Analog Integrated Circuit Device Data
Freescale Semiconductor
The WDCONF pin is the configuration pin for the internal
The AGND, PGND and LGND pins are the Analog and
The AGND pin is the ground reference of the voltage
The PGND and LGND pins are used for high-current load
Note: PGND, AGND and LGND pins must be connected
LS1 and LS2 are the low side driver outputs. Those
Both low side switches are protected against overheating.
The Lx pins are multi purpose inputs. They can be used as
When used as wake-up inputs L1 and L2 can be
When used as an analog input, the voltage present on the
will be disabled as a digital input and remains disabled in low-
power mode. No wake-up feature is available in that
condition.
the voltage divider is disconnected from that input.
HIGH SIDE OUTPUT (HS1)
or lamps. Its structure is connected to the VS2 supply pin.
The pin is short-circuit protected and also protected against
overheating.
applied to the PWMIN input pin.
for the cyclic-sense of the wake inputs.
POWER SUPPLIES (VS1 AND VS2)
application, VS1 and VS2 pins must be protected against a
reverse battery connection and negative transient voltages
with external components. These pins sustain standard
automotive voltage conditions such as a load dump at 40V.
other internal blocks are supplied by the VS1 pin.
VOLTAGE SENSE (VSENSE)
is protected against a battery reverse connection. The
voltage present on this input is scaled down by an internal
voltage divider, and can be routed to the ADOUT0 output pin
and used by the MCU to read the battery voltage.
+40 V and down to -27 V, allowing this pin to be connected
directly to the battery line. It is strongly recommended to
connect a 10kohm resistor in series with this pin for protection
purposes.
+5.0 V MAIN REGULATOR OUTPUT (VDD)
stabilize the regulated output voltage. The VDD pin is
intended to supply a microcontroller. The pin is current limited
against shorts to GND and over-temperature protected.
with its full drive capabilities and the output current is limited.
down.
Note: If an Lx input is selected in the analog multiplexer, it
When an Lx input is not selected in the analog multiplexer,
This high side switch is able to drive loads such as relays
HS1 is controlled by SPI and can respond to a signal
The HS1 output can also be used during low-power mode
These are the battery level voltage supply pins. In
The high side switch (HS1) is supplied by the VS2 pin, all
This input can be connected directly to the battery line. It
The ESD structure on this pin allows for excursion up to
An external capacitor must be placed on the VDD pin to
During Stop mode, the voltage regulator does not operate
During Sleep mode the regulator output is completely shut
FUNCTIONAL PIN DESCRIPTION
FUNCTIONAL DESCRIPTION
33911
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