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AK4161 Datasheet(PDF) 8 Page - Asahi Kasei Microsystems

Part # AK4161
Description  6-channel Capacitive Touch Sensor IC
Download  12 Pages
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Manufacturer  AKM [Asahi Kasei Microsystems]
Direct Link  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AK4161 Datasheet(HTML) 8 Page - Asahi Kasei Microsystems

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[AK4161]
MS1450-E-02-PB
2014/05
- 8 -
SWITCHING CHARACTERISTICS
(Ta = -40C ~ 85C, VDD = 1.6V ~ 3.6V; unless otherwise specified)
Parameter
Symbol
min
typ
max
Unit
Internal Oscillator
Fast Oscillator Period
FPRD
75
125
175
ns
Slow Oscillator Period
SPRD
21
32
43
us
Reset Timing
Reset Pulse Width (Note 15)
tRW
10
-
-
us
Reset Pin Pulse Width of Spike Noise
Suppressed by Input Filter (Note 16)
tRS
0.5
-
-
us
I2C
SCL clock frequency
fSCL
-
-
400
kHz
Bus Free Time Between Transmissions
tBUF
1.3
-
-
us
Start Condition Hold Time (prior to first Clock pulse)
tHD:STA
0.6
-
-
us
Clock Low Time
tLOW
1.3
-
-
us
Clock High Time
tHIGH
0.6
-
-
us
Setup Time for Repeated Start Condition
tSU:STA
0.6
-
-
us
SDA Hold Time from SCL Falling (Note 17)
tHD:DAT
0
-
-
us
SDA Setup Time from SCL Rising
tSU:DAT
0.1
-
-
us
Rise Time of Both SDA and SCL Lines
tR
-
-
0.3
us
Fall Time of Both SDA and SCL Lines
tF
-
-
0.3
us
Setup Time for Stop Condition
tSU:STO
0.6
-
-
us
Pulse Width of Spike Noise Suppressed By Input Filter
tSP
50
-
-
ns
Capacitive load on bus
Cb
-
-
400
pF
Note 15. The AK4161 can be reset by the RSTN pin = “L”. Keep “L” period for 10us or more for a certain reset.
Note 16. Pulse width of spike noise suppressed by input filter of the RSTN pin.
Note 17. Data must be held for sufficient time to bridge the 300ns transition time of SCL.
RSTN
tRW
tRS
50%VDD
Figure 2. Reset Timing Diagram
tHIGH
SCL
SDA
VIH
tLOW
tBUF
tHD:STA
tR
tF
tHD:DAT
tSU:DAT
tSU:STA
Stop
Start
Start
Stop
tSU:STO
VIL
VIH
VIL
tSP
Figure 3. I
2C Interface Timing Diagram


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