BS802C(8SOP-A) [HOLTEK]

Micro Peripheral IC;
BS802C(8SOP-A)
型号: BS802C(8SOP-A)
厂家: HOLTEK SEMICONDUCTOR INC    HOLTEK SEMICONDUCTOR INC
描述:

Micro Peripheral IC

文件: 总21页 (文件大小:175K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
BS801C/02C/04C/06C/08C  
Touch Key  
Features  
·
·
·
·
·
·
·
·
·
·
Operating voltage: 2.2V~5.5V  
Ultra low current: 3.0mA at 3V  
Auto-calibration  
Output type: Level-hold or Toggle  
One-key or Any-key State  
Key State Mode set by pins or serial command  
Open drain NMOS output  
High reliability touch detections  
High PSRR  
Key status monitored using pins or serial bus  
General Description  
The BS801C/02C/04C/06C/08C are a range of 1 to 8  
key touch key devices which can detect human body  
contact using external touch pads. The high level of de-  
vice integration enable applications to be implemented  
with a minimum number of external components.  
Special internal circuitry is also employed to ensure  
excellent power noise rejection to reduce the possibility  
of false detections, increasing the touch switch applica-  
tion reliability under adverse environmental conditions.  
With auto-calibration, low operating current and a low  
power one-key operating state, this range of touch key  
devices provides a simple and effective means of imple-  
menting touch switches in a wide variety of applications.  
The BS804C and BS808C are equipped with a One-line  
serial interface to allow easy communication with an exter-  
nal MCU for device setup and for touch pin monitoring pur-  
poses.  
Selection Table  
Operating Current at 3V  
Key  
Output  
Type  
Touch  
Serial  
Auto  
Part. No.  
Package  
One-Key  
State  
Any-key  
State  
Keys  
Interface  
Calibration  
Level-Hold  
or Toggle  
BS801C  
BS802C  
1-Key  
2-Key  
SOT23-6  
3.0mA  
¾
¾
¾
Level-Hold  
or Toggle  
8SOP  
8SOP  
¾
5.0mA  
¾
BS804C  
4-Key  
3.0mA  
8.0mA  
Ö
Ö
Level-Hold  
or Toggle  
16NSOP  
BS806C  
BS808C  
6-Key  
8-Key  
Level-Hold  
16NSOP  
16NSOP  
3.0mA  
3.0mA  
14.0mA  
18.0mA  
¾
Ö
¾
Level-Hold 20SOP/SSOP  
¾
Rev. 1.00  
1
December 2, 2009  
BS801C/02C/04C/06C/08C  
Pin Assignment  
K
K
K
K
e
e
e
e
y
y
y
y
0
1
2
3
K
K
K
K
S
V
O
L
o
o
o
o
C
D
u
u
u
u
t
t
t
t
0
1
2
3
1
2
3
4
5
6
7
8
1
1
1
1
1
1
1
6
5
4
3
2
1
0
V
F
D
C
D
r
e
f
L
H
5
6
4
K
e
y
0
C
K
V
L
r
e
f
K
K
K
e
e
e
y
y
y
1
2
3
K
S
V
V
e
C
D
S
y
0
C
r
e
f
D
D
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
T
o
p
V
i
e
w
K
K
o
o
u
u
t
t
1
0
e
D
y
1
D
D
V
S
S
D
N
N
C
C
K
W
2
3
1
V
S
S
H
F
C
r
e
f
S
H
F
9
K e  
S
y
V
S
t
K
o
u
B
S
8
0
1
C
B
S
8
0
2
C
B
S
8
0
4
C
B
S
8
0
4
C
S
O
T
2
3
-
6
-
A
8
S
O
P
-
A
8
S
O
P
-
A
1
6
N
S
O
P
-
A
K
K
K
K
K
K
K
K
e
e
e
e
e
e
e
e
y
y
y
y
y
y
y
y
0
1
2
3
4
5
6
7
2
1
1
1
1
1
1
1
1
1
0
9
8
7
6
5
4
3
2
1
K
K
K
K
K
K
K
K
V
O
o
o
o
o
o
o
o
o
u
u
u
u
u
u
u
u
t
t
t
t
t
t
t
t
0
1
2
3
4
5
6
7
1
2
3
4
5
6
7
8
9
1
K
K
K
K
K
K
e
e
e
e
e
e
y
y
y
y
y
y
0
1
2
3
4
5
K
K
K
K
K
K
V
O
o
o
o
o
o
o
D
u
u
u
u
u
u
t
t
t
t
t
t
0
1
2
3
4
5
K
K
K
K
K
K
e
e
e
e
e
e
y
y
y
y
y
y
0
1
4
5
6
7
K
K
N
N
N
S
V
V
e
e
y
y
2
3
1
2
3
4
5
6
7
8
1
1
1
1
1
1
1
6
5
4
3
2
1
0
1
2
3
4
5
6
7
8
1
1
1
1
1
1
1
6
5
4
3
2
1
0
C
C
C
C
D
S
D
D
C
r
e
f
D
C
r
e
f
C
r
e
f
D
D
V
S
S
K
W
N
C
S
V
S
S
K
W
9
9
0
B
S
8
0
6
C
B
S
8
0
8
C
B
S
8
0
8
C
1
6
N
S
O
P
-
A
1
6
N
S
O
P
-
A
2
0
S
O
P
-
A
/
S
S
O
P
-
A
Pin Description  
The pins in the following table are common to all devices.  
Pin Name  
I/O  
Description  
Key0~Keyn  
Input Touch key n input. These pins are connected to the external touch key.  
Kout0~Koutn Output Touch key n output pin.  
Touch key reference capacitor input - value range of 0pF to 10pF - higher capacitance val-  
ues result in higher sensitivities.  
Cref  
Input  
VSS  
VDD  
Negative power supply, ground  
Positive power supply  
¾
¾
The following table shows device specific pins.  
Pin Name  
I/O  
Device  
Description  
Selects One-key State or Any-key State.  
Pin condition is read during power-up. The logic status of this pin must not be  
changed after power-on. After power-on this pin¢s function can be overridden  
by a serial command on relevant devices. Pin connected to an internal  
pull-high resistor. Internal circuitry ensures that this pull high resistor will not  
consume current even if the input is low.  
BS804C  
BS806C  
BS808C  
OKW  
Input  
Open: One-key State using key0 only  
Low: Any-Key State  
Serial bus pin used to communicate with an external MCU. The external MCU  
can read the BS804C or BS808C touch key status and also send commands  
to the device via this pin.  
Input/  
BS804C  
BS808C  
SCD  
LHF  
Output  
Selects Key Output Type  
Pin condition is read during power-up. The logic status of this pin must not be  
changed after power-on. After power-on this pin¢s function can be overridden  
by a serial command on relevant devices. Pin connected to an internal  
pull-high resistor. Internal circuitry ensures that this pull high resistor will not  
consume current even if the input is low.  
BS801C  
BS802C  
BS804C  
Input  
Open: Level-Hold output  
Low: Toggle output  
Note: It is important that the logic level of the OKW and LHF pins do not change state after power-on.  
Rev. 1.00  
2
December 2, 2009  
BS801C/02C/04C/06C/08C  
Absolute Maximum Ratings  
Supply Voltage ..........................VSS-0.3V to VSS+6.0V  
Input Voltage .............................VSS-0.3V to VDD+0.3V  
Storage Temperature ...........................-50°C to 125°C  
Operating Temperature ..........................-40°C to 85°C  
I
OL Total ................................................................80mA  
I
OH Total..............................................................-80mA  
Total Power Dissipation .....................................500mW  
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may  
cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed  
in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.  
D.C. Characteristics  
BS801C  
Ta=25°C  
Test Conditions  
Symbol  
Parameter  
Min.  
Typ.  
Max.  
Unit  
VDD  
Conditions  
VDD  
IDD  
VIH  
VIL  
Operating Voltage  
Operating Current  
Input High Voltage  
Input Low Voltage  
Sink Current  
2.2  
5.5  
6
V
mA  
V
¾
¾
¾
3
3V No load  
¾
0.7VDD  
VDD  
¾
¾
¾
¾
¾
¾
8
0.3VDD  
0
4
V
IOL  
V
OL=0.1VDD  
3V  
3V  
mA  
kW  
¾
RPH  
Pull-high Resistance  
20  
60  
100  
¾
BS802C  
Symbol  
Ta=25°C  
Test Conditions  
Conditions  
¾
Parameter  
Min.  
Typ.  
Max.  
Unit  
VDD  
VDD  
IDD  
VIH  
VIL  
Operating Voltage  
Operating Current  
Input High Voltage  
Input Low Voltage  
Sink Current  
2.2  
5.5  
10  
V
mA  
V
¾
¾
5
3V No load  
¾
0.7VDD  
VDD  
¾
¾
¾
¾
¾
¾
8
0.3VDD  
0
4
V
IOL  
VOL=0.1VDD  
3V  
3V  
mA  
kW  
¾
RPH  
Pull-high Resistance  
20  
60  
100  
¾
Rev. 1.00  
3
December 2, 2009  
BS801C/02C/04C/06C/08C  
BS804C  
Symbol  
Ta=25°C  
Test Conditions  
Conditions  
¾
Parameter  
Min.  
Typ.  
Max.  
Unit  
VDD  
VDD  
IDD1  
Operating Voltage  
2.2  
5.5  
6.0  
V
¾
¾
Operating Current -  
One-key State  
3V No load  
3V No load  
3.0  
¾
mA  
Operating Current -  
Any-Key State  
IDD2  
8.0  
16.0  
mA  
VIH  
VIL  
0.7VDD  
VDD  
Input High Voltage  
Input Low Voltage  
Sink Current  
V
V
¾
¾
¾
¾
¾
¾
8
0.3VDD  
0
4
IOL  
VOL=0.1VDD  
3V  
3V  
mA  
kW  
¾
RPH  
Pull-high Resistance  
20  
60  
100  
¾
BS806C  
Symbol  
Ta=25°C  
Test Conditions  
Conditions  
¾
Parameter  
Min.  
Typ.  
Max.  
Unit  
VDD  
VDD  
IDD1  
Operating Voltage  
2.2  
5.5  
6.0  
V
¾
¾
Operating Current -  
One-key State  
3V No load  
3V No load  
3.0  
¾
mA  
Operating Current -  
Any-Key State  
IDD2  
14.0  
28.0  
mA  
VIH  
VIL  
0.7VDD  
VDD  
Input High Voltage  
Input Low Voltage  
Sink Current  
V
V
¾
¾
¾
¾
¾
¾
8
0.3VDD  
0
4
IOL  
VOL=0.1VDD  
3V  
3V  
mA  
kW  
¾
RPH  
Pull-high Resistance  
20  
60  
100  
¾
BS808C  
Symbol  
Ta=25°C  
Test Conditions  
Conditions  
¾
Parameter  
Min.  
Typ.  
Max.  
Unit  
VDD  
VDD  
IDD1  
Operating Voltage  
2.2  
5.5  
6.0  
V
¾
¾
Operating Current -  
One-key State  
3V No load  
3V No load  
3.0  
¾
mA  
Operating Current -  
Any-Key State  
IDD2  
18.0  
36.0  
mA  
VIH  
VIL  
0.7VDD  
VDD  
Input High Voltage  
Input Low Voltage  
Sink Current  
V
V
¾
¾
¾
¾
¾
¾
8
0.3VDD  
0
4
IOL  
VOL=0.1VDD  
3V  
3V  
mA  
kW  
¾
RPH  
Pull-high Resistance  
20  
60  
100  
¾
Rev. 1.00  
4
December 2, 2009  
BS801C/02C/04C/06C/08C  
A.C. Characteristics  
Ta=25°C  
Test Conditions  
Symbol  
Parameter  
Min.  
Typ.  
Max.  
Unit  
VDD  
3V  
3V  
3V  
3V  
Conditions  
fSCD  
fKRT  
tKH  
SCD Clock  
10.4  
75  
13.0  
100  
40  
15.6  
125  
50  
kHz  
ms  
s
¾
¾
¾
¾
Key Response Time  
Maximum Key Hold Time  
Auto-Calibration Period  
30  
tCAL  
1.8  
2.5  
3.2  
s
Functional Description  
Introduction  
actions are detected on any Key input, then the device  
will revert to the One-key State.  
This range of BS80xC touch key devices offer an easy  
and reliable means of implementing touch switch func-  
tions in a range of applications. A single external capaci-  
tor is the only external component required for most  
applications while a single line serial bus offers conve-  
nient communication with an external MCU.  
The advantage of choosing the One-key State over the  
Any-key State is that it will result in lower power con-  
sumption as only one key remains active. The logic sta-  
tus of the OKW pin is only read when the device powers  
up and will determine the operating state of the device  
after power-on. For the BS804C and BS808C devices,  
this power-on state can be overridden later by sending  
the appropriate command to the device on its SCD pin.  
The logic level on the OKW pin must not be changed af-  
ter power on. Internal circuitry ensures that the internal  
pull-high resistor on the OKW pin will not consume cur-  
rent after power-on.  
Device Operation State  
There are two operating states known as the One-key  
State and the Any-key State. Devices with an OKW pin,  
namely the BS804C, BS806C and BS808C, can oper-  
ate in either the One-key State or the Any-key State.  
When these devices are powered up, the condition of  
the OKW pin will be automatically read. If the OKW pin is  
low then the device will enter the Any-key State and if  
the pin is floating the device will enter the One-key  
State. As the BS801C and BS802C devices do not have  
an OKW pin they will always operate in the Any-key  
State.  
Part No.  
OKW Open  
OKW Low  
BS804C  
BS806C  
BS808C  
One-key  
State  
Any-key  
State  
The logic status of the OKW pin is read when the device  
powers up. The logic level on this pin must not be  
changed after power on. Internal circuitry ensures that  
the internal pull-high resistor on the OKW pin will not  
consume current.  
In the Any-key State, as the name suggests all of the  
Keyn touch inputs will be active, however in the One-key  
State only Key0 will be active. After power up if the  
BS804C, BS806C and BS808C device enters the  
One-key State then touching any Key other than Key0  
will have no effect. If a touch action is however detected  
on Key0, then the device will enter the Any-key State  
and operate normally with all keys active. However,  
within a timer period of around 20 seconds, if no touch  
Any-key On Time in  
Part No.  
One-key State  
BS804C  
BS806C  
BS808C  
Approx 20 secs  
Rev. 1.00  
5
December 2, 2009  
BS801C/02C/04C/06C/08C  
Touch Key Outputs  
mands to the touch key device. The serial interface al-  
lows three functions to be implemented, two are initiated  
by the external MCU and one by the BS80xC.  
All Kout pins have NMOS structures to allow easy inter-  
facing to external devices with different operating volt-  
ages. The BS801C, BS802 and BS804C devices can  
have their outputs configured to operate with either  
Level-Hold or Toggle type. The output type is deter-  
mined by the status of the LHF pin which is read during  
power-on. The logic level on this pin must not be  
changed after power on. Internal circuitry ensures that  
the internal pull-high resistor on the LHF pin will not  
consume current. The BS806C and BS808C only have  
Level-Hold output types.  
SCD Command  
Direction  
Wake-up or Interrupt  
MCU  
BS804C/BS808C ® MCU  
Step1: MCU send command  
MCU ® BS804C/BS808C  
Read Touch Key  
Status  
Step2: MCU read key status  
BS804C/BS808C ® MCU  
Send command to  
BS804C/BS808C  
MCU ® BS804C/BS808C  
Part No.  
LHF  
Open  
Low  
Kout Type  
Level-Hold  
SCD Function Summary  
BS801C  
BS802C  
BS804C  
·
BS804C/BS808C Wakes-up or Interrupts MCU  
Toggle  
When any of the touch keys change state, a pulse will  
be generated by the BS804C/BS808C device which  
can be used to wake up or to interrupt an external  
MCU. The MCU must ensure that its pin connected to  
the SCD pin is setup as an input to receive this pulse.  
The pulse width generated by the device is equal to a  
BS806C  
BS808C  
Level-Hold  
¾
Serial Interface - SCD  
Both the BS804C and BS808C are equipped with a sin-  
gle line serial interface on the SCD pin, allowing for easy  
interfacing to an external MCU.  
t
SCD/2 period where tSCD is about 76ms.  
t
S
C
D
This single line interface allows communication in both  
directions between the touch key device and the external  
MCU. Using this interface, the external MCU can serially  
read the status of the touch keys at any time. The Serial  
interface also allows the external MCU to send com-  
I
P
N
T
O
C
/
P
I
/
B
S
8
0
4
S
C
D
o
r
M
C
U
B
S
8
0
8
C
I
/
O
Wake-up/Interrupt Pulse to MCU  
P
o
w
e
r
O
n
O
n
e
-
K
e
y
S
t
a
t
e
O
K
W
l
o
w
A
n
y
-
K
e
y
O
K
W
O
p
e
n
?
Y
N
N
K
e
y
0
O
n
?
A
n
y
-
K
e
y
N
O
n
?
R
e
t
u
r
n
t
o
O
n
e
-
K
e
y
S
t
a
t
e
Y
E
n
a
b
l
e
K
e
y
0
O
u
t
p
u
t
E
n
a
b
l
e
K
e
y
n
O
u
t
p
u
t
Y
A
n
y
-
K
e
y
o
n
N
w
i
t
h
i
n
2
0
s
e
c
.
?
Y
E
n
a
b
l
e
K
e
y
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p
u
t
BS804C, BS806C and BS808C Operating Flow  
Rev. 1.00  
6
December 2, 2009  
BS801C/02C/04C/06C/08C  
·
MCU reads the touch key status  
command from the MCU. Any command sent to the  
device from the MCU will override the original power  
on configuration setup.  
The MCU can send a command to the BS804C/  
BS808C device to request the touch key status. The  
protocol for reading the touch key status is as follows:  
N
u
m
b
e
r
o
f
p
¨
w
i
t
h
S
i
C
n
D
4
t
The external MCU takes control of the SCD line and  
first sends three rising edge pulses or more to the  
BS804C/BS808C within a time of about 152ms.  
s
e
t
s
o
p
e
r
a
t
i
S
C
D
L
i
n
e
1
2
n
f
r
o
m
M
C
U
¨
¨
The MCU then changes its I/O pin to an input.  
T
A
4
S
C
D
The BS804C/BS808C device will then pull the SCD  
line low, then high, the timings are given by syn-  
chronise period. This allows the MCU to synchro-  
nise itself for the data transfer.  
N
o
t
e
:
S
C
T
D
P
A
e
>
r
i
o
8
d
t
s
SCD Device Setup  
¨
The BS804C/BS808C device will then transmit its  
key status, given by D0~Dn  
The desired Operating Mode to be setup depends  
upon the number of pulses received by BS804C/  
BS808C within a time period, 4 tSCD, as shown in the  
table. After the programming clock cycles have been  
transmitted and the SCD line returns high, the device  
will return to normal operation.  
-
For the BS804C, the data format is D0~D3.  
-
For the BS808C, the data format is D0~D7.  
¨
¨
The MCU can then read the key status taking care  
to read the data in the centre of the transmitted data  
pulse.  
Clock Pulses  
0~2  
Operating Mode  
Set by external pin  
After the last data bit is transferred the BS804C/  
BS808C device will return its SCD pin to an input  
state.  
3~6  
For test purposes  
One-Key state  
The timings associated with the above protocol can be  
described in multiples of the SCD clock periods. The  
SCD clock period is about about 76ms.  
7~10  
11~14  
>15  
For test purposes  
Any-Key state  
A certain time is required for the MCU to transmit three  
or more pulses to inform the device that it desires to  
read the key status. After this time has elapsed the de-  
vice will then transmit the data bits, D0~Dn.  
BS804C and BS808C SCD Commands  
Note that the MCU must transmits these pulses within 4  
tSCD  
.
Device  
BS804C  
BS808C  
Time  
Maximum Key On Duration Time  
22 tSCD  
38 tSCD  
To minimise the possibility of unintentional switch detec-  
tions, such as undesired objects covering the sense  
electrodes, the devices includes a Maximum Key-On  
duration time function. To implement this function the  
devices include an internal timer, which starts running  
after each switch detection. If the key on time of a touch  
key exceeds a value of about 40 seconds, then the de-  
vice will be reset to its power-on condition and initiate a  
new auto calibration. The output will then remain inac-  
tive until the next switch detection.  
Key Status Read Total Time  
Each bit of transmitted data corresponds directly to a  
touch input key. Therefore the status of touch key Key0  
is represented by D0, Key1 by D1 and so on. A ²low² bit  
means that a touch has been detected, a ²high² bit  
means no touch has been detected.  
Pin  
Data Bit  
D0  
Dn Value  
Key0  
Key1  
Auto-calibration Function  
D1  
1: Key Off  
0: Key On  
The devices include a full auto-calibration function  
which will be initiated after the device is powered-on. In  
addition to the power-on calibration, if no switch detec-  
tion has been made for more than about 2.5 seconds  
then a further calibration procedure will be carried out.  
The calibration is applied independently to each chan-  
nel on the devices. By implementing this feature,  
changes in the touch key environmental conditions are  
automatically catered for dynamically.  
:
:
:
:
Keyn  
Dn  
·
MCU sends commands to BS804C/BS808C device  
The MCU can send commands along the SCD line to  
setup the device in different Operating State. To do  
this the externally connected MCU takes control of the  
SCD line, first forcing it low and holding it low for a  
time of greater than 8 tSCD cycles. This action will tem-  
porarily disable the device and enable it to receive the  
Rev. 1.00  
7
December 2, 2009  
BS801C/02C/04C/06C/08C  
M
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SCD Pin Touch Key Status Request  
Sensitivity Adjustment  
·
The sensitivity of the switch is a very important consider-  
ation in most applications whose requirements will vary  
according to the user application. The user should  
therefore be aware of the factors which will affect the  
overall sensitivity of their touch key application. Factors  
to take into consideration include the electrode size and  
the capacitance of the connection lines from the elec-  
trode to the BS80xC device. Therefore the sensitivity  
will vary according to the actual PCB layout and design.  
An external capacitor, Cs, connected to the Cref pin, is  
used to set the overall sensitivity of all pins. Some of the  
most important factors affecting sensitivity are the fol-  
lowing:  
Touch key pad size  
Larger touch key sizes will increase sensitivity and of  
course vice-versa, small electrode sizes will decrease  
sensitivity.  
·
·
Touch key pad insulating panel thickness  
A thinner panel will result in higher sensitivity and of  
course thicker panels will result in a lower sensitivities.  
Touch key pad insulating panel material  
The choice of the dielectric material for the panel will in-  
fluence the sensitivity. Materials with higher dielectric  
constants will result in higher sensitivities and lower di-  
electric constants will result in lower sensitivities.  
Touch  
Key  
·
Cref capacitor value - Cs  
Key  
The purpose of the Cs capacitor is to allow for adjust-  
ment of touch key sensitivity and power noise rejec-  
tion. The optimal choice of sensitivity and power noise  
rejection will be obtained when the value of the Cs ca-  
pacitor is equivalent to the touch pad capacitance,  
however the value can still be changed to obtain the  
required sensitivity value. Higher Cs values will result  
in higher levels of sensitivity. Recommended values  
for Cs are between 0pF and 10pF.  
Cs  
Cref  
0pF~  
10pF  
Rev. 1.00  
8
December 2, 2009  
BS801C/02C/04C/06C/08C  
Application Circuit  
VDD  
Touch  
Key  
VDD  
Key  
0.1uF  
Cref  
Cs  
0pF~  
10pF  
R
VDD  
Kout  
LHF  
VSS  
BS801C  
VDD  
Touch  
Key0  
VDD  
Key0  
0.1uF  
Touch  
Key1  
Key1  
Cref  
R
VDD  
VDD  
Cs  
0pF~  
10pF  
Kout0  
Kout1  
R
LHF  
VSS  
BS802C  
VDD  
Touch  
Key0  
VDD  
Key0  
.
.
.
.
0.1uF  
.
.
MCU  
Touch  
Key3  
Key3  
INTB or  
Port  
Cref  
Cs  
0pF~  
10pF  
SCD  
R
R
VDD  
VDD  
Kout0  
LHF  
.
.
.
OKW  
VSS  
Kout3  
BS804C  
Note: If the output is connected to an MCU input with an internal pull high resistor then the pull high resistor on the ap-  
plication circuit is not required.  
Rev. 1.00  
9
December 2, 2009  
BS801C/02C/04C/06C/08C  
VDD  
Touch  
Key0  
VDD  
Key0  
.
.
.
.
0.1uF  
.
.
Touch  
Key5  
R
R
Key5  
VDD  
Kout0  
.
Cref  
Cs  
0pF~  
10pF  
.
.
VDD  
Kout5  
OKW  
VSS  
BS806C  
VDD  
Touch  
Key0  
VDD  
SCD  
Key0  
.
MCU  
.
.
.
0.1uF  
.
.
INTB or  
Port  
Touch  
Key7  
Key7  
R
R
VDD  
VDD  
Cref  
Cs  
0pF~  
10pF  
Kout0  
.
.
Kout7  
OKW  
VSS  
BS808C  
Note: If the output is connected to an MCU input with an internal pull high resistor then the pull high resistor on the ap-  
plication circuit is not required.  
Rev. 1.00  
10  
December 2, 2009  
BS801C/02C/04C/06C/08C  
Package Information  
8-pin SOP (150mil) Outline Dimensions  
8
1
5
A
B
4
C
C
'
G
H
D
a
E
F
·
MS-012  
Dimensions in mil  
Symbol  
Min.  
228  
150  
12  
188  
¾
Nom.  
¾
Max.  
244  
157  
20  
A
B
C
C¢  
D
E
F
¾
¾
197  
69  
¾
¾
50  
¾
¾
4
10  
¾
¾
¾
¾
G
H
a
16  
7
50  
10  
0°  
8°  
Rev. 1.00  
11  
December 2, 2009  
BS801C/02C/04C/06C/08C  
16-pin NSOP (150mil) Outline Dimensions  
1
6
9
8
A
B
1
C
C
'
G
H
D
a
F
E
·
MS-012  
Dimensions in mil  
Symbol  
Min.  
228  
150  
12  
386  
¾
Nom.  
¾
Max.  
244  
157  
20  
A
B
C
C¢  
D
E
F
¾
¾
394  
69  
¾
¾
50  
¾
¾
4
10  
¾
¾
¾
¾
G
H
a
16  
7
50  
10  
0°  
8°  
Rev. 1.00  
12  
December 2, 2009  
BS801C/02C/04C/06C/08C  
20-pin SOP (300mil) Outline Dimensions  
2
0
1
1
A
B
1
1
0
C
C
'
G
H
D
a
E
F
·
MS-013  
Dimensions in mil  
Symbol  
Min.  
393  
256  
12  
496  
¾
Nom.  
¾
Max.  
419  
300  
20  
A
B
C
C¢  
D
E
F
¾
¾
512  
104  
¾
¾
¾
50  
¾
4
12  
¾
¾
¾
¾
G
H
a
16  
8
50  
13  
0°  
8°  
Rev. 1.00  
13  
December 2, 2009  
BS801C/02C/04C/06C/08C  
20-pin SSOP (150mil) Outline Dimensions  
2
0
1
1
0
A
B
1
1
C
C
'
G
H
D
a
E
F
Dimensions in mil  
Symbol  
Min.  
228  
150  
8
Nom.  
¾
Max.  
244  
158  
12  
A
B
C
C¢  
D
E
F
¾
¾
335  
49  
¾
347  
65  
¾
¾
25  
¾
¾
4
10  
G
H
a
15  
7
50  
¾
10  
¾
0°  
¾
8°  
Rev. 1.00  
14  
December 2, 2009  
BS801C/02C/04C/06C/08C  
6-pin SOT23-6 Outline Dimensions  
D
C
L
E
H
q
e
A
A
2
b
A
1
Dimensions in mm  
Symbol  
Min.  
1.0  
¾
Nom.  
¾
Max.  
1.3  
0.1  
0.9  
0.50  
0.25  
3.1  
1.8  
¾
A
A1  
A2  
b
¾
0.7  
0.35  
0.1  
2.7  
1.4  
¾
¾
¾
C
D
E
¾
¾
¾
e
1.9  
¾
H
L
2.6  
0.37  
1°  
3.0  
¾
¾
q
¾
9°  
Rev. 1.00  
15  
December 2, 2009  
BS801C/02C/04C/06C/08C  
Product Tape and Reel Specifications  
Reel Dimensions  
D
T
2
C
A
B
T
1
SOP 8N  
Symbol  
Description  
Dimensions in mm  
330.0±1.0  
A
B
Reel Outer Diameter  
Reel Inner Diameter  
Spindle Hole Diameter  
Key Slit Width  
100.0±1.5  
+0.5/-0.2  
13.0  
C
D
2.0±0.5  
+0.3/-0.2  
12.8  
T1  
T2  
Space Between Flange  
Reel Thickness  
18.2±0.2  
SOP 16N (150mil)  
Symbol  
Description  
Dimensions in mm  
330.0±1.0  
A
B
Reel Outer Diameter  
Reel Inner Diameter  
Spindle Hole Diameter  
Key Slit Width  
100.0±1.5  
+0.5/-0.2  
13.0  
C
D
2.0±0.5  
+0.3/-0.2  
16.8  
T1  
T2  
Space Between Flange  
Reel Thickness  
22.2±0.2  
Rev. 1.00  
16  
December 2, 2009  
BS801C/02C/04C/06C/08C  
SOP 20W  
Symbol  
Description  
Reel Outer Diameter  
Dimensions in mm  
330.0±1.0  
A
B
Reel Inner Diameter  
Spindle Hole Diameter  
Key Slit Width  
100.0±1.5  
+0.5/-0.2  
13.0  
C
D
2.0±0.5  
+0.3/-0.2  
24.8  
T1  
T2  
Space Between Flange  
Reel Thickness  
30.2±0.2  
SSOP 20S (150mil)  
Symbol  
Description  
Reel Outer Diameter  
Reel Inner Diameter  
Dimensions in mm  
330.0±1.0  
A
B
100.0±1.5  
+0.5/-0.2  
13.0  
C
Spindle Hole Diameter  
Key Slit Width  
D
2.0±0.5  
+0.3/-0.2  
16.8  
T1  
T2  
Space Between Flange  
Reel Thickness  
22.2±0.2  
SOT23-6  
Symbol  
Description  
Dimensions in mm  
178.0±1.0  
A
B
Reel Outer Diameter  
Reel Inner Diameter  
Spindle Hole Diameter  
Key Slit Width  
62.0±1.0  
C
13.0±0.2  
D
2.50±0.25  
+1.5/-0.0  
8.4  
T1  
T2  
Space Between Flange  
Reel Thickness  
+1.5/-0.0  
11.4  
Rev. 1.00  
17  
December 2, 2009  
BS801C/02C/04C/06C/08C  
Carrier Tape Dimensions  
P
0
P
1
t
D
E
F
W
B
0
C
D
1
P
K
0
A
0
R
e
e
l
H
o
l
e
I
C
p
a
c
k
a
g
e
p
i
n
1
a
n
d
a
r
e
l
o
c
a
t
e
d
o
n
t
h
e
s
a
SOP 8N  
Symbol  
Description  
Dimensions in mm  
+0.3/-0.1  
12.0  
W
P
Carrier Tape Width  
Cavity Pitch  
8.0±0.1  
1.75±0.1  
5.5±0.1  
E
Perforation Position  
F
Cavity to Perforation (Width Direction)  
Perforation Diameter  
Cavity Hole Diameter  
Perforation Pitch  
D
1.55±0.1  
+0.25/-0.00  
D1  
P0  
P1  
A0  
B0  
K0  
t
1.50  
4.0±0.1  
2.0±0.1  
6.4±0.1  
5.2±0.1  
2.1±0.1  
0.30±0.05  
9.3±0.1  
Cavity to Perforation (Length Direction)  
Cavity Length  
Cavity Width  
Cavity Depth  
Carrier Tape Thickness  
Cover Tape Width  
C
SOP 16N (150mil)  
Symbol  
Description  
Carrier Tape Width  
Dimensions in mm  
16.0±0.3  
W
P
Cavity Pitch  
8.0±0.1  
E
Perforation Position  
Cavity to Perforation (Width Direction)  
Perforation Diameter  
Cavity Hole Diameter  
Perforation Pitch  
1.75±0.1  
F
7.5±0.1  
+0.10/-0.00  
D
1.55  
+0.25/-0.00  
D1  
P0  
P1  
A0  
B0  
K0  
t
1.50  
4.0±0.1  
2.0±0.1  
Cavity to Perforation (Length Direction)  
Cavity Length  
6.5±0.1  
Cavity Width  
10.3±0.1  
2.1±0.1  
Cavity Depth  
Carrier Tape Thickness  
Cover Tape Width  
0.30±0.05  
13.3±0.1  
C
Rev. 1.00  
18  
December 2, 2009  
BS801C/02C/04C/06C/08C  
SOP 20W  
Symbol  
Description  
Carrier Tape Width  
Dimensions in mm  
+0.3/-0.1  
24.0  
W
P
Cavity Pitch  
12.0±0.1  
1.75±0.10  
11.5±0.1  
E
Perforation Position  
Cavity to Perforation (Width Direction)  
Perforation Diameter  
Cavity Hole Diameter  
Perforation Pitch  
F
+0.1/-0.0  
D
1.5  
+0.25/-0.00  
D1  
P0  
P1  
A0  
B0  
K0  
t
1.50  
4.0±0.1  
2.0±0.1  
Cavity to Perforation (Length Direction)  
Cavity Length  
10.8±0.1  
13.3±0.1  
3.2±0.1  
Cavity Width  
Cavity Depth  
Carrier Tape Thickness  
Cover Tape Width  
0.30±0.05  
21.3±0.1  
C
SSOP 20S (150mil)  
Symbol  
Description  
Carrier Tape Width  
Dimensions in mm  
+0.3/-0.1  
16.0  
W
P
Cavity Pitch  
8.0±0.1  
1.75±0.10  
7.5±0.1  
E
Perforation Position  
Cavity to Perforation (Width Direction)  
Perforation Diameter  
Cavity Hole Diameter  
Perforation Pitch  
F
+0.1/-0.0  
D
1.5  
+0.25/-0.00  
D1  
P0  
P1  
A0  
B0  
K0  
t
1.50  
4.0±0.1  
2.0±0.1  
6.5±0.1  
9.0±0.1  
2.3±0.1  
0.30±0.05  
13.3±0.1  
Cavity to Perforation (Length Direction)  
Cavity Length  
Cavity Width  
Cavity Depth  
Carrier Tape Thickness  
Cover Tape Width  
C
Rev. 1.00  
19  
December 2, 2009  
BS801C/02C/04C/06C/08C  
SOT23-6  
Symbol  
Description  
Carrier Tape Width  
Dimensions in mm  
8.0±0.3  
W
P
Cavity Pitch  
4.0±0.1  
E
Perforation Position  
Cavity to Perforation (Width Direction)  
Perforation Diameter  
Cavity Hole Diameter  
Perforation Pitch  
1.75±0.10  
F
3.50±0.05  
+0.1/-0.0  
D
1.5  
+0.1/-0.0  
D1  
P0  
P1  
A0  
B0  
K0  
t
1.5  
4.0±0.1  
2.00±0.05  
3.15±0.10  
3.2±0.1  
Cavity to Perforation (Length Direction)  
Cavity Length  
Cavity Width  
Cavity Depth  
1.4±0.1  
Carrier Tape Thickness  
Cover Tape Width  
0.20±0.03  
5.3±0.1  
C
Rev. 1.00  
20  
December 2, 2009  
BS801C/02C/04C/06C/08C  
Holtek Semiconductor Inc. (Headquarters)  
No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan  
Tel: 886-3-563-1999  
Fax: 886-3-563-1189  
http://www.holtek.com.tw  
Holtek Semiconductor Inc. (Taipei Sales Office)  
4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan  
Tel: 886-2-2655-7070  
Fax: 886-2-2655-7373  
Fax: 886-2-2655-7383 (International sales hotline)  
Holtek Semiconductor Inc. (Shenzhen Sales Office)  
5F, Unit A, Productivity Building, No.5 Gaoxin M 2nd Road, Nanshan District, Shenzhen, China 518057  
Tel: 86-755-8616-9908, 86-755-8616-9308  
Fax: 86-755-8616-9722  
Holtek Semiconductor (USA), Inc. (North America Sales Office)  
46729 Fremont Blvd., Fremont, CA 94538, USA  
Tel: 1-510-252-9880  
Fax: 1-510-252-9885  
http://www.holtek.com  
Copyright Ó 2009 by HOLTEK SEMICONDUCTOR INC.  
The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek as-  
sumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used  
solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable  
without further modification, nor recommends the use of its products for application that may present a risk to human life  
due to malfunction or otherwise. Holtek¢s products are not authorized for use as critical components in life support devices  
or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information,  
please visit our web site at http://www.holtek.com.tw.  
Rev. 1.00  
21  
December 2, 2009  

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Touch Key
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BS808C(16NSOP-A)

Micro Peripheral IC
HOLTEK

BS808C(20SOP-A)

Micro Peripheral IC
HOLTEK