Datasheet > ADT7519_15

ADT7519_15

更新时间： 2022-02-26 12:22:37

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
44页	3247K
描述
SPI-/IC-Compatible, Temperature Sensor, 4-Channel ADC and Quad Voltage Output

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数据手册

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ADT7519_15 数据手册

ADT7516/ADT7517/ADT7519

SCLK

DIN

START

WRITE COMMAND

CS (CONTINUED)

SCLK (CONTINUED)

DIN (CONTINUED)

STOP

DATA BYTE

Figure 63. SPI—Writing to the Address Pointer Register Followed by a Single Byte of Data to the Selected Register

Write Operation

Read Operation

Figure 63 shows the timing diagram for a write operation to the

ADT7516/ADT7517/ADT7519. Data is clocked into the

Figure 64 to Figure 66 show the timing diagrams necessary to

accomplish correct read operations. To read back from a

address of the register to be read from. This operation is shown

in Figure 64. Figure 65 shows the procedure for reading back a

single byte of data. The read command is first sent to the part

during the first eight clock cycles. As the read command is

being sent, irrelevant data is output onto the DOUT line.

During the following eight clock cycles, the data contained in

the register selected by the address pointer register is output

onto the DOUT line. Data is output onto the DOUT line on the

falling edge of SCLK. Figure 66 shows the procedure when

reading data from two sequential registers. Multiple data reads

are possible in the SPI interface mode as the address pointer

increments from 0x00 to 0x3F and loops back to start again at

0x00 when it reaches 0x3F.

registers on the rising edge of SCLK. When the

the DIN and DOUT lines are in three-state mode. Only when

line is high,

the

goes from a high to a low does the part accept any data

on the DIN line. In SPI mode, the address pointer register is

capable of auto-incrementing to the next register in the register

map without having to load the address pointer register each

time. In Figure 63, the register address portion gives the first

sequential writable registers. Thus, after each data byte has been

written into a register, the address pointer register auto-

increments its value to the next available register. The address

pointer register auto-increments from 0x00 to 0x3F and loops

back to start again at 0x00 when it reaches 0x3F.

Rev. B | Page 40 of 44

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