Technical Note
13/20
BH1730FVC
www.rohm.com
2012.02 - Rev.A
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Interrupt threshold H level
time
persistence = 1
Master writes “Interrupt output reset” command.
sequential measurement results
persistence = 2
Interrupt threshold L level
DATA0
INT Terminal
H
L
H
L
●
Interrupt function
Interrupt function compares measurement result to preset interrupt threshold level. BH1730FVC uses two threshold level
(upper and lower ). If measurement result is outside of two threshold, INT pin outputs ’L’. Interrupt threshold is defined at
Interrupt threshold registers ( 03h - 06h ).
Interrupt function is able to control by Interrupt opecode. Interrupt persistence is defined at Interrupt opecode lower 4 bits.
INT pin is Nch open drain terminal so this terminal should be pull-up to some kind of voltage source by an external resister.
Maximum sink current rating of this terminal is 7mA.
INT terminal is high impedance when VCC is supplied.
INT terminal becomes inactive by setting “Interrupt output reset” special command. VCC current (approximately 30uA at
VCC=3.0V ) is consumed during INT terminal is ‘L’. So it is recommended to reset INT terminal at once when interrupt is
detected.
