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PDF BU21009MUV Data sheet ( Hoja de datos )
| Número de pieza | BU21009MUV | |
| Descripción | Capacitive Sensor Switch Control IC | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Capacitive Sensor Control IC Series
Capacitive Sensor Switch
Control IC
BU21009MUV
No.09048EBT03
●Description
BU21009MUV is the capacitive sensor controller for the switch function and slider function with 16 channels sensors.
All channels are calibrated for the slider functions. So this is useful for 16 switches application, too.
LED driver is available (No PWM function).
●Features
1) Slider function
2) LED driver available
www.Data3Sh) ee2t4wUir.ecosmerial interface
4) Power supply = 2.5V to 3.3V, I/O power supply = 1.7V to 3.3V
5) Integrated 10bit AD converter, clock and reset
6) Package VQFN032V5050
●Applications
It is possible to use it widely as a switch/slider such as a Mobile phone, Portable equipment, and Audiovisual apparatuses.
●Absolute Maximum Ratings (Ta=25℃)
PARAMETER
SYMBOL
RATING
MIN MAX
APPLIED VOLTAGE
AVDD
DVDD
-0.3
-0.3
4.5
4.5
INPUT VOLTAGE
VAIN
VDIN
-0.3
-0.3
AVDD+0.3
DVDD+0.3
STORAGE TEMPERATURE RANGE
Tstg
-55
125
POWER DISSIPATION
Pd
304
Ambient temperature reduces a permission loss by 3.1mW per case more than 25 degrees Celsius, 1 degree Celsius.
UNIT
V
V
℃
mW
●Recommended Operating conditions
PARAMETER
APPLIED VOLTAGE
OPERATINGTEMPERATURE RANGE
SYMBOL
AVDD
DVDD
Topr
MIN
2.5
1.7
-40
RATING
TYP
3.0
3.0
25
MAX
3.3
3.3
85
UNIT
V
V
℃
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/13
2009.04 - Rev.B
1 page  
BU21009MUV
●I/O Circuit
①CMOS INPUT
②CMOS Schmitt INPUT
Technical Note
③CMOS OUTPUT
I
CIN PAD CIN PAD
④CMOS 3stute OUTPUT
with ANALOG-SW
ASW
AIN
I
www.DataSheet4U.com
OE
PAD
⑤CMOS Schmitt INOUT
CIN
I PAD
OEN
PAD
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
5/13
2009.04 - Rev.B
5 Page 
BU21009MUV
Technical Note
【FAh : Simultaneous Press and Idle Mode Entry】
Name:
CMD
Address:
FAh
Description:
INTERMIT_EN : Intermittent and the drive are enable. ：
Whether intermittent is driven at the idol mode is selected.
1：Intermittent is driven. 0：Intermittent is not driven. Initial state：Intermittent is driven.
IDLE_T[3:0] : non-detect time-out setting ：
This sets the time the chip takes to go from normal mode to idle mode in a period key inactivity.
Duration = system clock x 219 x IDLE_T (Example of system clock 1[MHz]time : About 520[msec])
FAh
R/W
Initial val.
Bit7
-
-
-
Bit6 Bit5
Bit4
Bit3
Bit2
Bit1
-
- INTERMIT_EN IDLE_T[3]
IDLE_T[2]
IDLE_T[1]
--
W
W
W
W
--
1
0
1
1
Bit0
IDLE_T[0]
W
1
【FBh : Gain Setting, Filter Function】
www.DataNShaemeet4: U.com GAIN_FILTER
Address:
FBh
Description: Gain adjustment and setting of noise filter function.
GAIN[2:0] : gain setting：
It uses it for the gain adjustment in eight stages. Initial adjustment value：x1
GAIN[2:0]
000 001 010 011 100 101 110 111
Adjustment value
x1
x 4.22
x 8.4
x 16.5
x 23
x 46
x 69
x 92
FILTER_EN : Filter enable ：
Enables/disables setting of noise filter function
1 : enabled 0 : disabled Initial state : disabled
DELTA[3:0] : Filter follow count setting ：
The follow count to which the noise filter function is effective is set.
FBh
R/W
Initial val.
Bit7
GAIN[2]
W
0
Bit6
GAIN [1]
W
0
Bit5
GAIN[0]
W
0
Bit4
FILTER_EN
W
0
Bit3
DELTA[3]
W
0
Bit2
DELTA[2]
W
0
Bit1
DELTA[1]
W
1
Bit0
DELTA[0]
W
0
【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.
FCh
R/W
Initial val.
Bit7
-
-
-
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
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
11/13
2009.04 - Rev.B
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet BU21009MUV.PDF ] | |
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