AK4186 Datasheet, PDF (24/33 Pages) Asahi Kasei Microsystems – Low Power Touch Screen Controller with I2C Interface

[AK4186]
PENIRQN
SCL
SDA ^{S Slave Address W}
Su b Addre ss (02H )
W=0
OSCLK
Internal Sequence
(SEQM2-0 bits=“001”, X-Y Scan)
PEN Touch
Data (10H)
P
Tracking, Conversion
(X-axis 1st)
Wait
20 / fosc
Tracking, Conversion
(X-axis nth)
Tracking, Conversion
(Y-axis 1st)
20 / fosc
Wait
20 / fosc
Tracking, Conversion
(Y-axis nth)
PE NIRQ N
20 / fosc
Ena bl e
DAV
Figure 30. Sequence Mode Control Sequence (X-Y Scan: SEQM bits = “001”)
(Sequence Mode Start → Internal Sequence Processing → Data Available)
PENIRQN
SCL
SDA ^S
DAV
Slave Address W
Sub Address (11H)
S
W=0
A K4 186
ACK
AK4186
ACK
Slave Address R
ADC Data (11H)
ADC Data (12H)
ADC Data (13H)
ADC Data (14H)
P
R=1
AK4186
ACK
MASTER
ACK
MASTER
ACK
MASTER
ACK
MASTER
NAC K
Figure 31. Sequence Mode Control Sequence (X-Y Scan: SEQM bits = “001”)
(Data Available → A/D Data Read)
D11
(MSB)
D10
D9
D8
D7
D6
D5
D4
Figure 32. ADC Data (High Byte)
D3
D2
D1
D0
(LSB)
0
0
0
0
Figure 33. ADC Data (Low Byte)
MS1068-E-04
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2011/03