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BH1771GLC データシート(PDF) 16 Page - Rohm

部品番号 BH1771GLC
部品情報  1 Chip Optical Proximity Sensor Ambient Light Sensor IC
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メーカー  ROHM [Rohm]
ホームページ  http://www.rohm.com
Logo ROHM - Rohm

BH1771GLC データシート(HTML) 16 Page - Rohm

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Technical Note
16/32
BH1771GLC
www.rohm.com
2011.06 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
ex3 ) Ambient light sensor interrupt function
In case of unlatch mode if the measurement value is within the range set by ALS interrupt threshold ‘H’ and “L” value, the
interrupt becomes inactive. And if the measurement value is out of the range set by threshold ‘H’ and ”L” value, the
interrupt becomes active.
In case of latch mode once the interrupt becomes active, it keeps the status until end of measurement after INTERRUPT
register is read.
In case that persistence function is set to active, if the interrupt is inactive, it keeps inactive status until the measurement
value is continuously out of the range set by threshold ‘H’ and “L” value. If the interrupt is active, it keeps active status until
the measurement value is continuously within the range set by threshold ‘H’ and ”L” value or until end of measurement
after INTERRUPT register is read.
Master reads INTERRUPT register
Unlatch mode
ALS interrupt threshold ‘H’ level
ALS interrupt threshold ‘L’ level
Sequential measurement result
time
Latch mode
Unlatch mode
persistence = 2
active
inactive
Sequential measurement result


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