MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA

33972

3

TERMINAL DEFINITIONS

A functional description of each terminal can be found in the System/Application Information section beginning on page 9.

Terminal

Terminal

Name

Formal Name

Definition

1

GND

Ground

Ground for logic, analog, and switch to battery inputs.

2

SI

SPI Slave In

SPI control data input terminal from MCU to 33972.

3

SCLK

Serial Clock

SPI control clock input terminal.

4

CS

Chip Select

SPI control chip select input terminal from MCU to 33972. Logic [0} allows data to be

transferred in.

5–8

25–28

SP0–3

SP4–7

Programmable Switches 0–7

Programmable switch-to-battery or switch-to-ground input terminals.

9–15,

18–24

SG0–6,

SG13–7

Switch-to-Ground Inputs 0–13

Switch-to-ground input terminals.

16

Battery Input

Battery supply input terminal. Terminal requires external reverse battery protection.

17

WAKE

Wake-Up

Open drain wake-up output. Designed to control a power supply enable terminal.

29

INT

Interrupt

Open-drain output to MCU. Used to indicate input switch change of state.

30

AMUX

Analog Multiplex Output

Analog multiplex output.

31

Voltage Drain Supply

3.3/5.0 V supply. Sets SPI communication level for SO driver.

32

SO

SPI Slave Out

Provides digital data from 33972 to MCU.

SO

1

SP7

SP6

SP5

SP4

SG7

SG8

SG9

SG10

SG11

SG13

WAKE

SG12

INT

AMUX

GND

SP0

SP1

SP2

SP3

SG0

SG1

SG2

SG3

SG4

SG6

SG5

CS

SI

SCLK

8

9

10

11

12

13

14

15

16

3

4

5

6

7

2

32

25

24

23

22

21

20

19

18

17

30

29

28

27

26

31

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com