Serial Controlled, 8-Channel SPST Switch

8

_______________________________________________________________________________________

X

D6

D5

0

X

X

1

X

X

0

X

X

D7

1

X

X

X

X

X

X

X

X

X

1

X

X

0

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

D0

X

X

X

X

X

X

X

X

X

X

X

X

X

D3

X

X

X

X

X

X

X

X

X

X

X

1

0

D4

X

X

X

X

1

0

X

X

X

X

X

X

X

D2

X

X

X

X

X

X

X

X

X

1

0

X

X

Switch 7 open (off)

Switch 7 closed (on)

Switch 6 open

Switch 6 closed

Switch 4 closed

Switch 4 open

Switch 5 closed

Switch 5 open

Switch 1 open

Switch 2 closed

Switch 2 open

Switch 3 closed

Switch 3 open

D1

X

X

X

X

X

X

X

X

0

X

X

X

X

X

X

X

X

X

X

1

X

Switch 1 closed

X

X

X

X

X

X

X

0

Switch 0 open

X

X

X

X

X

X

X

1

Switch 0 closed

Table 1. Serial-Interface Switch Programming

X = Don't care

SCLK

DIN

DOUT

CS

SK

SO

SI

I/0

MICROWIRE

PORT

MAX335

THE DOUT-SI CONNECTION IS NOT REQUIRED FOR WRITING TO THE

MAX335, BUT MAY BE USED FOR DATA-ECHO PURPOSES.

DOUT

DIN

SCLK

CS

MISO

MOSI

SCK

I/0

SPI

PORT

MAX335

THE DOUT-MISO CONNECTION IS NOT REQUIRED FOR WRITING TO THE

MAX335, BUT MAY BE USED FOR DATA-ECHO PURPOSES.

CPOL = 0, CPHA = 0

Figure 3. Connections for Microwire

Figure 4. Connections for SPI

DATA BITS

FUNCTION