MC33910BAC / MC34910BAC
PIN CONNECTIONS
Table 31. 33910 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description.
Pin
Pin Name
Formal Name
Definition
This input pin is for configuration of the watchdog period and allows the
disabling of the watchdog.
Watchdog
Configuration Pin
12
13
14
WDCONF
LIN
This pin represents the single-wire bus transmitter and receiver.
LIN Bus
This pin is the device LIN ground connection. It is internally connected to the
PGND pin.
LGND
LIN Ground Pin
This pin is the device power ground connection. It is internally connected to
the LGND pin.
18
PGND
Power Ground Pin
This pin is a wake-up capable digital input(68). In addition, L1 can be sensed
analog via the analog multiplexer.
23
24, 25
26, 27
29
L1
Wake-up Input
High Side Outputs
Power Supply Pin
Voltage Sense Pin
High side switch outputs.
HS2, HS1
VS2, VS1
VSENSE
HVDD
These pins are device battery level power supply pins. VS2 is supplying the
HS1 driver while VS1 supplies the remaining blocks.(69)
Battery voltage sense input.(70)
Hall Sensor Supply
Output
+5.0 V switchable supply output pin.(71)
30
Voltage Regulator
Output
+5.0 V main voltage regulator output pin.(72)
This pin is the device analog ground connection.
31
32
VDD
AGND
Analog Ground Pin
Notes
68. When used as digital input, a series 33kΩ resistor must be used to protect against automotive transients.
69. Reverse battery protection series diodes must be used externally to protect the internal circuitry.
70. This pin can be connected directly to the battery line for voltage measurements. The pin is self protected against reverse battery
connections. It is strongly recommended to connect a 10kΩ resistor in series with this pin for protection purposes.
71. External capacitor (1.0 µF < C < 10 µF; 0.1 Ω < ESR < 5.0 Ω) required.
72. External capacitor (2.0 µF < C < 100 µF; 0.1 Ω < ESR < 10 Ω) required.
33910
Analog Integrated Circuit Device Data
Freescale Semiconductor
50
FREESCALE [ Freescale ]
