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AS7331 数据表(PDF) 48 Page - ams-OSRAM AG

部件名 AS7331
功能描述  Spectral UVA/B/C Sensor
PDF  72 Pages
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制造商  AMSOSRAM [ams-OSRAM AG]
网页  https://ams-osram.com/
标志 AMSOSRAM - ams-OSRAM AG

AS7331 数据表(HTML) 48 Page - ams-OSRAM AG

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AS7331
Functional Description
Datasheet
• PUBLIC
DS001047
• v4-00 • 2023-Mar-24
71
│ 47
Figure 42:
Example of Addressing the AS7331 to Read the Configuration Registers
Figure 43:
Example of Addressing the AS7331 to Read the Measurement Result Registers Starting at
Address 4h
The access of the result register bank with 2 byte addresses each (starting with the low byte), which is
only possible within the measurement state, has a special feature (see Figure 43). After reaching the
last valid result register address (4h or 6h if SYND mode is activated with CREG2:EN_TM =
“1”) the
next result register address is the default one, 2h, during read on. The setback of the result register
address 2h in the measurement mode does not take place if an address was set above the valid
addressable space.
S
A
0
06h
A
9Ch
A
CBh
SLAVE
ADDR.
R/W
1 1 1 0 1 0 0
E8h
address CREG1
A
write EDGES
write BREAK
6h
7h
P
10h
A
8h
52h
A
9h
01h
A
Ah
register address:
data transferred from slave to master
data transferred from master to slave
A: acknowledge
NA: not acknowledge
write CREG1
write CREG2
write CREG3
S: START cond.
Sr: repeated START condition
P: STOP cond.
S
A
0
A
SLAVE
ADDR.
R/W
1 1 1 0 1 0 0
E8h
04h
address MRES3
Sr
SLAVE
ADDR.
1 1 1 0 1 0 0
E9h
MRES1
A
MRES1
2h
read low byte
read high byte
1
R/W
MRES3
A
A
MRES3
A
reg. addr.:
4h
read low byte
read high byte
. . . NA P
A
data transferred from slave to master
data transferred from master to slave
A: acknowledge
NA: not acknowledge
P: STOP cond.



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