AK4180 Datasheet, PDF (6/17 Pages) Asahi Kasei Microsystems – Touch Screen Controller

[ASAHI KASEI]
[AK4180]
DC Characteristics (Logic I/O)
Ta=-20 to 70°C,VCC=2.7V to 3.6V
Parameter
Symbol
min
Typ
max
Units
“H” level input voltage
VIH
-
0.8xVCC
V
“L” level input voltage
VIL
-
0.2xVCC
V
Input Leakage Current
IILK
-10
10
uA
“H” level output voltage (@ Iout = -250uA)
VOH
VCC-0.4
-
V
“L” level output voltage (@ Iout= 250uA)
VOL
-
-
0.4
V
Tri-state Leakage Current
IOLK
All pins except for XP, YP, XN, YN pins
-10
XP, YP, XN, YN pins
-50
10
uA
50
uA
PENIRQN “L” level output voltage (100KΩ Pull-Up)
VOLP
0.8
V
Ta=-20°C to 70°C, VCC=2.7V to 3.6V
Parameter
Touch Panel (A/D Converter)
Throughput Rate
DCLK
frequency
duty
Tracking Time (Rin=600Ω)
Conversion Time
CSN “↓” to First DCLK “↑”
CSN “↓” to BUSY Tri-State Disabled
CSN “↓” to DOUT Tri-State Disabled
DCLK High Pulse Width
DCLK Low Pulse Width
DCLK “↓” to BUSY “↑”
Data Setup Time
Data Valid to DCLK Hold Time
Data Access Time after DCLK “↓”
CSN “↑” to DCLK Ignored
CSN “↑” to BUSY High-Z state
CSN “↑” to DOUT High-Z state
Switching Characteristics
Symbol
min
fDCLK
10
duty
40
tTRK
1.5
tCONV
t1
100
t2
t3
t4
200
t5
200
t6
t7
100
t8
10
t9
t10
0
t11
t12
Typ
max
Units
125
kHz
2000
kHz
50
60
%
us
12
1/fDCLK
ns
200
ns
200
ns
ns
ns
200
ns
ns
ns
200
ns
ns
200
ns
200
ns
CSN
DCLK
DIN
BUSY
DOUT
t1
t2
t3
t5
t4
t8
t7
t6
t6
t9
P0
D11
D10
AK4180 Timing Diagram
t10
t11
t12
D0
<MS0195-E-01>
6
2003/02