Holtek BS806B User Manual
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盛群半導體股份有限公司
HOLTEK SEMICONDUCTOR INC.
HOLTEK Touch Key IC Demo Board
BS806B
User Manual
● Demo Board–Top Side
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●
Demo Board–Bottom Side
OKW Pin
Description
Touch PAD
Sensitivity Adjust
Connection
CR2032
Battery
Holder
Cref PAD
Sensitivity Adjust
Connection
VDD
KOUT0
KOUT1
KOUT2
KOUT3
OKW
KOUT3
KOUT2
KOUT1
KOUT0
VSS
OKW
VSS
VDD
VDD
KOUT4
KOUT5
KOUT4
KOUT5
LED1
R1 2.7K
Key0
.
IC1
BS806B_16NSOP
1
2
3
4
10
11
7
8
5
6
9
12
16
15
14
13
Key0
Key1
Key2
Key3
VDD
KOUT5
Cref
VSS
Key4
Key5
OKW
KOUT4
KOUT0
KOUT1
KOUT2
KOUT3
OKW
BAT1
CR2032
C1
0.1uF
Key2
.
Key1
.
R2
2.7K
LED2
CS
4pF
R7
N.C.
Cref
.
Key3
.
R3 2.7K
R4 2.7K
JP1
CON3
1
2
3
LED4
LED3
Key5
.
Key4
.
R6 2.7K
R5 2.7K
LED5
LED6
JP2
CON6
1
2
3
4
5
6
<OKW Option>
Open: One K e y Wak e up.
Short: Any Key Wake up.
+
-
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● Pull out the insulator between battery and battery holder to power up
the Demo Board. (Ensure that not touching any component when
doing this.)
● Touch Key0 to wake up the Touch IC. (Default is in One-Key
wakeup mode after power on.).
● After a key touch action has been verified then the output indicator
LED1~6 and the KOUT0~5 pins will be activated with a LEVEL
HOLD output.
Touch Key Condition LED n
KOUT x pin status when
connected to pull-high
Key x is touched On 0V
Key x is not touched Off 3.0V
Note: “x” means 0, 1, 2, 3, 4 or 5; “n” means 1, 2, 3, 4, 5 or 6
● The OKW pin wake up control is described as following table:
OKW pin condition One Key wake up Any Key wake up
Ground -----
ˇ
Floating
ˇ
-----
● Using "Touch PAD sensitivity adjust connections" to modify the
sensitivity of each key.
● Verify the Touch Key sensitivity and response time.
● Determine the Sense PAD external casing material thickness.
● Determine the sense PAD area.
● Test the Touch Key IC Specification Characteristics.
● Provide the customer with a Touch Key related PCB Layout for consultation.
● Provide the customer with a demonstration and evaluation.
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When in use the following problems may be encountered:
Problem Potential Solution
No actions after
battery is installed
Check that whether the battery is not inserted correctly
or with the wrong polarity, has poor contacts or has no
power.
Abnormal LED
action
When a touch action results in abnormal LED
illumination, re-install the battery to re-activate or wait
for about 40 seconds after which the LED will
automatically extinguish.
LED uneven The CR2032 is low on power and should be replaced.
● Accessories
BS806B Touch Key IC Demo Board (includes a BS806B 16NSOP IC) x 1
CR2032 Battery x 1
User Manual x 1
● Specifications
Model : BS806B_DemoV100
Keys : 6 KEY
Battery : CR2032 Lithium Battery
Power Consumption : 1.5μA ( One Key wakeup standby )
4.0μA ( Any Key wakeup standby )
14μA ( Normal Mode )
Size : 64mm (H) x 50mm (W) x 11mm (D)
For more information about the touch Key IC, please visit our web site at
http://www.holtek.com.tw/touchkey
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