QST108 STMicroelectronics, QST108 Datasheet - Page 40

• Manufacturer Part Number: QST108
• Description: Capacitive Touch Sensor Device 8 Keys With Individual Key State Outputs Or I2c Interface
• Manufacturer: STMicroelectronics

Electrical characteristics
40/47
Figure 20. Typical application with I
SDA
SCL
I
2
t
C BUS
f(SDA)
t
h(STA)
START
4.7kΩ
t
w(SCKH)
t
r(SDA)
V
DD
t
w(SCKL)
4.7kΩ
V
DD
t
su(SDA)
t
r(SCK)
100Ω
100Ω
2
C bus and timing diagram
t
h(SDA)
t
f(SCK)
SDA
SCL
QST device
t
su(STA)
t
su(STO)
t
w(STO:STA)
REPEATED START
STOP
QST108
START