ADT7517ARQ-REEL Ver la hoja de datos (PDF) - Analog Devices

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ADT7517ARQ-REEL

SPI-/I2C-Compatible, Temperature Sensor, 4-Channel ADC and Quad Voltage Output

Analog Devices 

ADT7516/ADT7517/ADT7519

CS

1

8

1

8

SCLK

DIN

D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0

START

WRITE COMMAND

REGISTER ADDRESS

STOP

Figure 64. SPI—Writing to the Address Pointer Register to Select a Register for a Subsequent Read Operation

CS

1

8

1

8

SCLK

DIN

D7 D6 D5 D4 D3 D2 D1 D0

X

X

X

X

X

X

X

X

DOUT

CS

SCLK

X

X

X

X

X

X

X

X

D7 D6 D5 D4 D3 D2 D1

START

READ COMMAND

DATA BYTE 1

Figure 65. SPI—Reading a Single Byte of Data From a Selected Register

D0

STOP

1

8

1

8

DIN

DOUT

D7 D6 D5 D4 D3 D2 D1 D0

X

X

X

X

X

X

X

X

X

X

START

X

X

X

X

READ COMMAND

X

X

D7 D6 D5 D4 D3 D2 D1 D0

DATA BYTE 1

CS (CONTINUED)

1

8

SCLK (CONTINUED)

DIN (CONTINUED)

X

X

X

X

X

X

X

X

DOUT (CONTINUED)

D7 D6 D5 D4 D3 D2 D1

DATA BYTE 2

Figure 66. SPI—Reading Two Bytes of Data from Two Sequential Registers

D0

STOP

CS

SPI

READ OPERATION

WRITE OPERATION

Figure 67. SPI—Correct Use of CS during SPI Communication

Rev. B | Page 41 of 44

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