MC34910BACR2(2008) Просмотр технического описания (PDF) - Freescale Semiconductor

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MC34910BACR2
(Rev.:2008)

LIN System Basis Chip with 2x60mA High Side Drivers

Freescale Semiconductor 

PIN CONNECTIONS

Table 1. 33910 Pin Definitions

A functional description of each pin can be found in the Functional Pin Description section beginning on page 20.

Pin

Pin Name

Formal Name

Definition

12

WDCONF

Watchdog

Configuration Pin

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

disabling of the watchdog.

13

LIN

LIN Bus

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

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

14

LGND

LIN Ground Pin

PGND pin.

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

18

PGND

Power Ground Pin the LGND pin.

This pin is a wake-up capable digital input(1). In addition, L1 can be sensed

23

L1

Wake-up Input

analog via the analog multiplexer.

24, 25

HS2, HS1

High Side Outputs High side switch outputs.

26, 27

29

VS2, VS1

VSENSE

Power Supply Pin

Voltage Sense Pin

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

HS1 driver while VS1 supplies the remaining blocks.(2)

Battery voltage sense input.(3)

30

HVDD

Hall Sensor Supply +5.0V switchable supply output pin.(4)

Output

31

VDD

Voltage Regulator

Output

+5.0V main voltage regulator output pin.(5)

32

AGND

Analog Ground Pin This pin is the device analog ground connection.

Notes

1. When used as digital input, a series 33kΩ resistor must be used to protect against automotive transients.

2. Reverse battery protection series diodes must be used externally to protect the internal circuitry.

3. 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.

4. External capacitor (1µF < C < 10µF; 0.1Ω < ESR < 5Ω) required.

5. External capacitor (2µF < C < 100µF; 0.1Ω < ESR < 10Ω) required.

33910

4

Analog Integrated Circuit Device Data

Freescale Semiconductor

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