33910 datasheet(50/90 Pages) FREESCALE

50 / 90 page

Analog Integrated Circuit Device Data

Freescale Semiconductor

33910

PIN CONNECTIONS

MC33910BAC / MC34910BAC

WDCONF

Watchdog

Configuration Pin

This input pin is for configuration of the watchdog period and allows the

disabling of the watchdog.

LIN

LIN Bus

This pin represents the single-wire bus transmitter and receiver.

LGND

LIN Ground Pin

This pin is the device LIN ground connection. It is internally connected to the

PGND pin.

PGND

Power Ground Pin

This pin is the device power ground connection. It is internally connected to

the LGND pin.

Wake-up Input

This pin is a wake-up capable digital input(68). In addition, L1 can be sensed

analog via the analog multiplexer.

24, 25

HS2, HS1

High Side Outputs

High side switch outputs.

26, 27

VS2, VS1

Power Supply Pin

These pins are device battery level power supply pins. VS2 is supplying the

HS1 driver while VS1 supplies the remaining blocks.(69)

VSENSE

Voltage Sense Pin

Battery voltage sense input.(70)

HVDD

Hall Sensor Supply

Output

+5.0 V switchable supply output pin.(71)

VDD

Voltage Regulator

Output

+5.0 V main voltage regulator output pin.(72)

AGND

Analog Ground Pin

This pin is the device analog ground connection.

Notes

68.

When used as digital input, a series 33k

Ω 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 10k

Ω 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.

Table 31. 33910 Pin Definitions

A functional description of each pin can be found in the Functional Pin Description.

Pin Name

Formal Name

Definition

33910 Datasheet(PDF) 50 Page - Freescale Semiconductor, Inc

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