ADM1029ARQZ-R7 Ver la hoja de datos (PDF) - ON Semiconductor

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ADM1029ARQZ-R7

Dual PWM Fan Controller and Temperature Monitor for High Availability Systems

ON Semiconductor 

ADM1029

1

9

1

9

SCL

SDA

0

START BY

MASTER

1

0

1

A2 A1 A0 R/W

D7

FRAME 1

SERIAL BUS ADDRESS BYTE

ACK. BY

ADM1029

D6 D5 D4 D3 D2 D1 D0

FRAME 2

ADDRESS POINTER REGISTER BYTE

ACK. BY

ADM1029

1

9

SCL (CONTINUED)

SDA (CONTINUED)

D7 D6 D5 D4 D3 D2 D1 D0

FRAME 3

DATA BYTE

ACK. BY STOP BY

ADM1029 MASTER

Figure 4a. Writing a Register Address to the Address Pointer Register, then Writing Data to the Selected Register

1

9

1

9

SCL

SDA

0

START BY

MASTER

1

SCL

1

0

1

A2 A1 A0 R/W

D7 D6 D5 D4 D3 D2 D1 D0

FRAME 1

SERIAL BUS ADDRESS BYTE

ACK. BY

ADM1029

FRAME 2

ADDRESS POINTER REGISTER BYTE

ACK. BY

ADM1029

Figure 4b. Writing to the Address Pointer Register Only

STOP BY

MASTER

9

1

9

SDA

0

START BY

MASTER

1

0

1

A2 A1 A0 R/W

D7 D6 D5 D4 D3 D2 D1

FRAME 1

SERIAL BUS ADDRESS BYTE

ACK. BY

ADM1029

FRAME 2

DATA BYTE FROM ADM1029

Figure 4c. Reading Data from a Previously Selected Register

D0

NO ACK. STOP BY

BY MASTER MASTER

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