33975A_08 查看數據表（PDF） - Freescale Semiconductor

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33975A_08

Multiple Switch Detection Interface with Suppressed Wake-up and 32mA Wetting Current

Freescale Semiconductor 

SP0

SP1

SP2

SP3

SP4

SP5

SP6

SP7

SG0

SG1

SG2

SG3

SG4

SG5

SG6

SG7

SG8

SG9

SG10

SG11

SG12

SG13

INTERNAL BLOCK DIAGRAM

INTERNAL BLOCK DIAGRAM

VPWR VPWR

32.0

4.0

mA

mA

SP0

5.0 V

VPWR

16.0

mA

2.0

mA

4.0 V

Ref

–+

To

SPI

Comparator

VPWR, VDD, 5.0V

POR

Bandgap

Sleep PWR

VPWR

VDD

GND

VPWR VPWR

32.0

4.0

mA

mA

SP7

16.0

mA

2.0

mA

4.0 V

Ref

–+

To

SPI

Comparator

VPWR VPWR

32.0

4.0

mA

mA

SG0

5.0 V

VPWR

4.0 V

Ref

–+

To

SPI

Comparator

VPWR VPWR

32.0

4.0

mA

mA

SG13

4.0 V

Ref

–+

To

SPI

Comparator

Oscillator

and

Clock Control

Temperature

Monitor and

Control

5.0 V

5.0 V

VPWR

5.0 V

5.0 V

125 kΩ

WAKE Control

SPI Interface

and Control

VDD

125 kΩ

INT Control

MUX Interface

VDD

VDD

40 μA

VDD

+

–

Analog Mux

Output

WAKE

INT

CS

SCLK

SI

SO

AMUX

Figure 2. 33975 Simplified Internal Block Diagram

Analog Integrated Circuit Device Data

Freescale Semiconductor

33975

3

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