BU21009MUV Datasheet, PDF (7/14 Pages) Rohm – Capacitive Sensor Switch Control IC

BU21009MUV
Technical Note
●Register map
Address
Register name
1*h
SENS_DATA
30h
POSX
31h
POSY
32h, 33h
BTN
4*h
OFFSET
ECh
POS_MODE
EDh
RESET
EEh
CALIB
EFh
DONE
F0h, F1h
SENS_CH
F2h
LED_CH
F3h, F4h
IDLE_CH
F5h
LED_LINK
F6h
TIMES
F7h
TH_ON2
F8h, F9h
TH_ON2_CH
FAh
CMD
FBh
GAIN_FILTER
FCh
TH_ON
FDh
TH_OFF
FEh
DLED
R/W
Length
Explanation
R
1byte / channel Sensor output data. One for each channel.
R
1byte
X positional value axially.
R
1byte
Y positional value axially.
R
2byte
Button On/Off.
R
1byte / channel Offset correction data. One for each channel.
W
1byte
XY matrix setting.
W
1byte
Soft reset execution.
W
1byte
Soft calibration execution.
W
1byte
Setting done command.
W
2byte
Sensor channel enables.
W
1byte
LED channel enables.
W
2byte
Idle mode release control.
W
1byte
LED linkage to sensor input.
W
1byte
Defines the sampling interval and number of samples
required to recognize a button press.
W
1byte
A second threshold value in the detection of a button going
from OFF state to ON state.
W
2byte
Per channel selection of whether to use TH_ON or TH_ON2.
W
1byte
Simultaneous press and idle mode entry.
W
1byte
Gain setting, filter function.
W
1byte
A threshold value in the detection of a button going from OFF
state to ON state.
W
1byte
A threshold value in the detection of a button going from ON
state to OFF state.
W
1byte
Register to allow simple writing to LEDs.
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7/13
2009.04 - Rev.B