BU21010MUV Datasheet, PDF (12/15 Pages) Rohm – Capacitive Sensor Switch Control IC

BU21010MUV
Technical Note
【FCh: Switch OFF -> ON Threshold】
Name:
TH_ON
Address:
FCh
Description: This register provides a threshold value for determining if a sensor has transitioned from OFF to ON.
This is relative value from reference value (128d). So the absolute value of threshold is 128d + ON[6:0].
It makes a threshold value between TH_ON and TH_OFF.
TH_ON must be bigger than TH_OFF (TH_ON >= TH_OFF)
Maximum threshold is 256d and minimum value is 128d.
Bit7
FCh
-
R/W
-
Initial val.
-
Bit6
ON[6]
W
0
Bit5
ON[5]
W
0
Bit4
ON[4]
W
1
Bit3
ON[3]
W
0
Bit2
ON[2]
W
0
Bit1
ON[1]
W
0
Bit0
ON[0]
W
0
【FDh: Switch ON -> OFF Threshold Value】
Name:
TH_OFF
Address:
FDh
Description: This register provides a threshold value for transitioning from ON to OFF.
This is relative value from reference value (128d). So absolute value of threshold is
128d + OFF[6:0]. It makes a threshold value between TH_ON and TH_OFF.
TH_OFF must be smaller than TH_ON (TH_OFF =< TH_ON)
Maximum value is 256d and minimum value is 128d.
Bit7
FDh
-
R/W
-
Initial val.
-
Bit6
OFF[6]
W
0
Bit5
OFF[5]
W
0
Bit4
OFF[4]
W
0
Bit3
OFF[3]
W
0
Bit2
OFF[2]
W
0
Bit1
OFF[1]
W
0
Bit0
OFF[0]
W
1
【FEh: LED Port Data】
Name:
DLED
Address:
FEh
Description: When LED is not linked with the sensor, it becomes a simple digital output that controls the LED.
1 : Light. 0 : Turned off.
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
FEh
-
-
-
-
D3
D2
D1
D0
R/W
-
-
-
-
W
W
W
W
Initial val.
-
-
-
-
0
0
0
0
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12/14
2009.04 - Rev.B