ADT7320UCPZ-R2 datasheet(19/25 Pages) AD

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ADT7320

Data Sheet

Rev. 0 | Page 18 of 24

WRITING DATA

Data is written to the ADT7320 in 8 bits or 16 bits, depending on

the addressed register. The first byte written to the device is the

command byte, with the read/write bit set to 0. The master

then supplies the 8-bit or 16-bit input data on the DIN line.

The ADT7320 clocks the data into the register addressed in the

command byte on the rising edge of SCLK. The master finishes

the write transaction by pulling CS high.

Figure 15 shows a write to an 8-bit register, and Figure 16 shows

a write to a 16-bit register.

The master must begin a new write transaction on the bus for

every register write. Only one register is written to per bus

transaction.

DIN

8-BIT DATA

1213

1516

SCLK

R/W

8-BIT COMMAND BYTE

Figure 15. Writing to an 8-Bit Register

DIN

16-BIT DATA

SCLK

D14

D13

R/W

D12

D10

D11

D15

8-BIT COMMAND BYTE

Figure 16. Writing to a 16-Bit Register

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