33972 Просмотр технического описания (PDF) - Motorola => Freescale

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Компоненты Описание

производитель

33972

MULTIPLE SWITCH DETECTION INTERFACE WITH SUPPRESSED WAKE-UP

Motorola => Freescale 

Freescale Semiconductor, Inc.

GND

1

SI

2

SCLK

3

CS

4

SP0

5

SP1

6

SP2

7

SP3

8

SG0

9

SG1

10

SG2

11

SG3

12

SG4

13

SG5

14

SG6

15

VPWR

16

32

SO

31

VDD

30

AMUX

29

INT

28

SP7

27

SP6

26

SP5

25

SP4

24

SG7

23

SG8

22

SG9

21

SG10

20

SG11

19

SG12

18

SG13

17

WAKE

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, Switch-to-Ground Inputs 0–13 Switch-to-ground input terminals.

SG13 – 7

16

VPWR

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

VDD

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.

MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA

For More Information On This Product,

Go to: www.freescale.com

33972

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