ak4181a AKM Semiconductor, Inc., ak4181a Datasheet - Page 6

• Manufacturer Part Number: ak4181a
• Description: Touch Screen Controller
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Ta=-20 to 70°C, VCC=2.7V to 3.6V
Parameter
“H” level input voltage
“L” level input voltage
Input Leakage Current
“H” level output voltage
“L” level output voltage
Tri-state Leakage Current
PENIRQN “L” level output voltage (100KΩ Pull-Up)
Ta=-20°C to 70°C, VCC=2.7V to 3.6V
Parameter
Touch Panel (A/D Converter)
Throughput Rate
DCLK
Tracking Time (Rin=600Ω) (Note 5)
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
Note 5. The actual tracking periods are 3tDCLK. (tDCLK=1/fDCLK)
MS0313-E-00
frequency
duty
DOUT
BUSY
DCLK
CSN
DIN
All pins except for XP, YP, XN, YN pins
t1
t3
t2
(@ Iout = -250uA)
(@ Iout= 250uA)
XP, YP, XN, YN pins
t7
t4
t8
DC Characteristics (Logic I/O)
Figure 1 AK4181A Timing Diagram
Switching Characteristics
t5
Symbol
tCONV
fDCLK
tTRK
duty
t10
t11
t12
Fs
t4
t1
t2
t3
t5
t6
t7
t8
t9
Symbol
VOLP
IOLK
VOH
IILK
VOL
VIH
VIL
PD0
6
t6
0.8xVCC
VCC-0.4
1.428
min
min
100
190
190
100
-10
-10
-50
10
40
10
t6
0
-
D11
t9
typ
typ
D10
50
-
-
-
-
0.2xVCC
2100
max
max
125
200
200
160
160
200
200
0.4
0.8
10
10
50
60
12
D0
[AK4181A]
2004/06
t10
t11
1/fDCLK
Units
Units
kHz
kHz
µA
µA
µA
µs
%
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t12
V
V
V
V
V
50%VCC
VOL
50%VCC
50%VCC
VOH
VOH
VOL