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AS7000 データシート(PDF) 74 Page - ams AG

部品番号 AS7000
部品情報  The AS7000 device provides a flexible analog front end for light sensing applications
PDF  92 Pages
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メーカー  AMSCO [ams AG]
ホームページ  http://www.ams.com
Logo AMSCO - ams AG

AS7000 データシート(HTML) 74 Page - ams AG

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ams Datasheet
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[v1-12] 2018-Feb-26
AS7000 − Detailed Description
I²C Read Access
Random, Sequential and Current Address Read are used to read
data from the slave.
Figure 94:
I²C Random Read
I²C Random Read: Shows the format of an I²C random read access.
Random Read and Sequential Read are combined formats. The
repeated START condition is used to change the direction after
the data transfer from the master.
The word address transfer is initiated with a START condition
issued by the master while the bus is idle. The START condition
is followed by the device-write address and the word address.
In order to change the data direction a repeated START
condition is issued on the 1st SCL pulse after the acknowledge
bit of the word address transfer. After the reception of the
device-read address, the slave becomes the transmitter. In this
state the slave transmits register data located by the previous
received word address vector. The master responds to the data
byte with a not-acknowledge, and issues a STOP condition on
the bus.
Figure 95:
I²C Sequential Read
I²C Sequential Read: Shows the format of an I²C sequential read access.
S
DW
A
WA
A
N
A
read register
WA++
data
Sr
DR
P
WA++
S
DW
A
WA
A
N
A
read register
WA++
data
Sr
DR
P
WA++



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