ADM1191-2ARMZ-R7 datasheet(10/16 Pages) AD

10 / 16 page

ADM1191

Rev. B | Page 10 of 16

Base Address

A1 Pin State

A0 Pin State

A1 Pin Logic State

A0 Pin Logic State

Address in Binary1

Address in Hex

Floating

0111010X

0x74

Floating

High

0111011X

0x76

High

Ground

0111100X

0x78

High

Resistor to ground

0111101X

0x7A

High

Floating

0111110X

0x7C

High

0111111X

0x7E

1 X = don’t care.

ACKNOWLEDGE BY

SLAVE

ACKNOWLEDGE BY

SLAVE

SCL

(CONTINUED)

STOP

MASTER

SDA

(CONTINUED)

FRAME 3

DATA BYTE

FRAME N

DATA BYTE

SCL

START BY MASTER

ACKNOWLEDGE BY

SLAVE

ACKNOWLEDGE BY

SLAVE

FRAME 1

SLAVE ADDRESS

FRAME 2

COMMAND CODE

SDA

A0A

A0B

R/W

A1B

A1A

Figure 16. General I2C Write Timing Diagram

SCL

START BY MASTER

ACKNOWLEDGE BY

SLAVE

ACKNOWLEDGE BY

MASTER

NO ACKNOWLEDGE

ACKNOWLEDGE BY

MASTER

FRAME 1

SLAVE ADDRESS

FRAME 2

DATA BYTE

SCL

(CONTINUED)

STOP

MASTER

SDA

(CONTINUED)

FRAME 3

DATA BYTE

FRAME N

DATA BYTE

SDA

A0A

A0B

R/W

A1B

A1A

Figure 17. General I2C Read Timing Diagram

SCL

SDA

tHD;STA

tHD;DAT

tHIGH

tSU;DAT

tSU;STA

tHD;STA

tLOW

tBUF

tSU;STO

Figure 18. Serial Bus Timing Diagram

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