BU21010MUV-E2 Rohm Semiconductor, BU21010MUV-E2 Datasheet - Page 9

• Manufacturer Part Number: BU21010MUV-E2
• Description: IC CTLR CAP SENSOR 8CH 16VQFN
• Manufacturer: Rohm Semiconductor
• Type: Capacitive Sensor Controllerr

Specifications of BU21010MUV-E2

• Input Type: Logic
• Output Type: Logic
• Interface: 2-Wire Serial
• Current - Supply: 300µA
• Mounting Type: Surface Mount
• Package / Case: 16-VQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

© 2009 ROHM Co., Ltd. All rights reserved.
BU21010MUV
www.rohm.com
【E4h : Gesture Clock Setting】
【E5h : Gesture Timeout Data Setting】
【EEh : Soft Calibration】
【EFh : Setting Done, Detect Start】
Initial val.
Initial val.
Initial val.
Initial val.
Name:
Address:
Description:
Name:
Address:
Description: The maximum judgment time of the gesture is set.
Name:
Address:
Description:
Name:
Address:
Description:
R/W
R/W
EEh
R/W
R/W
E4h
E5h
EFh
G_DIV
0
1
2
3
TO[7]
It sets a divide ratio of the clock used.
The maximum judgment time and the sampling interval of the gesture can be set by changing this clock.
A key sequence which exceeds this time is not recognized.
Gesture Maximum Judgment Time＝（Gesture sampling interval） * TO * 16 [sec]
This forces a chip re-calibration when a 1 is written and returns to 0 afterward automatically.
Please note that one should always re-calibrate after changing the gain adjustment value.
This register should be written to following register updates.
Gesture sampling interval =
Gesture maximum judgment time＝（Gesture sampling interval） * TO * 16 [sec]
Bit7
Bit7
Bit7
Bit7
GES_CLK
E4h
GES_TIMEOUT
E5h
CALIB
EEh
DONE
EFh
For example with an internal clock of 1.1MHz
W
This register allows setting of the time base for the gesture detection.
1
-
-
-
-
-
-
-
-
-
1 / ( ( Internal oscillation frequency) / ( 2 * 16 * 16 ) * 1 [sec]
1 / ( ( Internal oscillation frequency) / ( 2 * 16 * 16 ) * 2 [sec]
1 / ( ( Internal oscillation frequency) / ( 2 * 16 * 16 ) * 4 [sec]
1 / ( ( Internal oscillation frequency) / ( 2 * 16 * 16 ) * 8 [sec]
Gesture sampling interval[msec]
TO[6]
Bit6
Bit6
Bit6
Bit6
W
1
-
-
-
-
-
-
-
-
-
0.46
0.93
1.86
3.72
TO[5]
Bit5
Bit5
Bit5
Bit5
W
1
-
-
-
-
-
-
-
-
-
TO[4]
Bit4
Bit4
Bit4
Bit4
W
9/14
1
-
-
-
-
-
-
-
-
-
Gesture maximum judgment time [sec]
TO[3]
Bit3
Bit3
Bit3
Bit3
W
1
-
-
-
-
-
-
-
-
-
… G_DIV = 0
… G_DIV = 1
… G_DIV = 2
… G_DIV = 3
TO[2]
Bit2
Bit2
Bit2
Bit2
W
1
-
-
-
-
-
-
-
-
-
1.90
3.81
7.62
15.2
G_DIV[1]
TO[1]
Bit1
Bit1
Bit1
Bit1
W
W
1
1
-
-
-
-
-
-
2009.04 - Rev.B
Technical Note
G_DIV[0]
CALIB
DONE
TO[0]
Bit0
Bit0
Bit0
Bit0
W
W
W
W
0
1
0
0