EVAL-ADT7410EBZ Просмотр технического описания (PDF) - Analog Devices

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производитель

EVAL-ADT7410EBZ

±0.5°C Accurate, 16-Bit Digital I²C Temperature Sensor

Analog Devices 

ADT7410

WRITING DATA

It is possible to write either a single byte of data or two bytes to

the ADT7410, depending on which registers are to be written.

Writing a single byte of data requires the serial bus address, the

data register address written to the address pointer register,

followed by the data byte written to the selected data register.

This is shown in Figure 15.

For the THIGH setpoint, TLOW setpoint, and TCRIT setpoint registers,

it is possible to write to both the MSB and the LSB registers in

the same write transaction. Writing two bytes of data to these

registers requires the serial bus address, the data register address

of the MSB register written to the address pointer register,

followed by the two data bytes written to the selected data

register. This is shown in Figure 16.

If more than the required number of data bytes is written to a

register, the register ignores these extra data bytes. To write to

a different register, a start or repeated start is required.

1

9

1

9

SCL

SDA

1

START BY

MASTER

0

0

1

0

A1 A0 R/W

P7

FRAME 1

SERIAL BUS ADDRESS BYTE

ACK. BY

ADT7410

1

SCL (CONTINUED)

P6 P5 P4 P3 P2 P1 P0

FRAME 2

ADDRESS POINTER REGISTER BYTE

9

ACK. BY

ADT7410

SDA (CONTINUED)

D7 D6 D5 D4 D3 D2 D1 D0

ACK. BY STOP BY

ADT7410 MASTER

FRAME 3

DATA BYTE

Figure 15. Writing to a Register Followed by a Single Byte of Data

1

9

1

9

SCL

SDA

1

0

0

1

0

A1 A0 R/W

P7 P6 P5 P4 P3 P2 P1 P0

START BY

MASTER

FRAME 1

SERIAL BUS ADDRESS BYTE

ACK. BY

ADT7410

FRAME 2

ADDRESS POINTER REGISTER BYTE

ACK. BY

ADT7410

1

9

1

9

SCL (CONTINUED)

SDA (CONTINUED)

D15 D14 D13 D12 D11 D10 D9 D8

D7 D6 D5 D4 D3 D2 D1 D0

ACK. BY

ADT7410

ACK. BY STOP BY

ADT7410 MASTER

FRAME 3

DATA BYTE

FRAME 4

DATA BYTE

Figure 16. Writing to a Register Followed by Two Bytes of Data

Rev. 0 | Page 18 of 24

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