Technical Note
9/20
BH1730FVC
www.rohm.com
2012.02 - Rev.A
© 2012 ROHM Co., Ltd. All rights reserved.
○
INTERRUPT (02h)
7 6 5 4 3 2 1 0
RES
INT_
STOP
RES
INT_
EN
PERSIST
default value 00h
Field
Bit
Type Description
RES
7
RW Write
0.
INT_STOP
6
RW
0 : ADC measurement is continuous.
1 : ADC measurement is stopped and ADC becomes
power down state when interrupt becomes active.
RES
5
RW Write
0.
INT_EN
4
RW
0 : Interrupt function is invalid.
1 : Interrupt function is valid.
PERSIST
3 : 0
RW
Interrupt persistence function.
0000 : Interrupt becomes active at each measurement end.
0001 : Interrupt status is updated at each measurement end.
0010 : Interrupt status is updated if two consecutive threshold
judgments are the same.
When set 0011 or more, interrupt status is updated if threshold
judgments are the same over consecutive set times.
○
TH_LOW (03h,04h)
7 6 5 4 3 2 1 0
Lower threshold data
default value 00h
Register Address
Bit
Type
Description
TH lower LSBs
03h
7 : 0
RW
Lower byte
TH lower MSBs
04h
7 : 0
RW
Upper byte
○
TH_UP (05h,06h)
7 6 5 4 3 2 1 0
Upper threshold data
default value FFh
Register Address
Bit
Type
Description
TH upper LSBs
05h
7 : 0
RW
Lower byte
TH upper MSBs
06h
7 : 0
RW
Upper byte
○
GAIN (07h)
7 6 5 4 3 2 1 0
RES GAIN
default value 00h
Field
Bit
Type Description
RES
7 : 3
RW Write 00000.
GAIN
2 : 0
RW
Change ADC resolution.
X00 : X1 gain mode
X01 : X2 gain mode
X10 : X64 gain mode
X11 : X128 gain mode
