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AS7331 数据表(PDF) 19 Page - OSRAM GmbH

部件名 AS7331
功能描述  Spectral UVA/B/C Sensor
PDF  72 Pages
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制造商  OSRAM [OSRAM GmbH]
网页  http://www.osram.com
标志 OSRAM - OSRAM GmbH

AS7331 数据表(HTML) 19 Page - OSRAM GmbH

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AS7331
Functional Description
Datasheet
• PUBLIC
DS001047
• v4-00 • 2023-Mar-24
71
│ 18
Figure 12:
State Machine of CONT Mode
The conversion time (TCONV) is determined by the content of the register CREG1:TIME (see
Figure 48). The rising edge of READY signalizes the end of each conversion and its available valid
results. Figure 48 shows the principle sequence for a measurement starting in CONT mode, while
waiting in the Measurement state shows IDLE:
1.
OSR programming: 83h, start of conti
nuous measurement via OSR:SS = “1”, while the device is
already in measurement mode (OSR:DOS = 011b),
2.
OSR programming: 03h, abortion of conti
nuous measurement via OSR:SS = “0” while pause
time (TBREAK) is already activated to get the last measurement results.
It is recommended to read the measurement results during the break between two consecutive
conversions. This pause time (TBREAK) can be configured in steps of 8
μs up to 2040 μs (Figure 53).
CONT
PAUSE
CONFIG
POWDOWN
PD = 0
MMODE = 0
SB = 0
PD = 0
MMODE = 0
SB = 0
M_IDLE
STANDBY
PD = 0
SS = 1
MMODE = 1
SB = 1
PD = 0
MMODE = 0
SB = 0
PD = 0
MMODE = 1
SB = 1
PD = 0
SS = 1
MMODE = 1
SB = 0
PD = 0
MMODE = 1
SB = 0
PD = 1
PD = 0
SS = 1
MMODE = 1
SB = 0
PD = 0
SS = 1
MMODE = 1
SB = 1
PD = 1
PD = 1
PD = 0
MMODE = 0
PD = 1
PD = 0
MMODE = 0
SB = 1
SS = 1
SB = 0
PD = 1
PD = 0
SS = 0
MMODE = 1
SB = 0
MMODE = 1
PD = 1
Power-up
PD = 0
MMODE = 0
SB = 0



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