AK4182A Datasheet, PDF (6/18 Pages) Asahi Kasei Microsystems – Touch Screen Controller

ASAHI KASEI


DC ಛੑ(Logic I/O)
(Ta=-40°C to 85°C, IOVDD=1.5V to 3.6V)
Parameter
Symbol
min.
typ.
“H” level input voltage
VIH
0.8xIOVDD
-
“L” level input voltage
VIL
-
Input Leakage Current
IILK
-10
“H” level output voltage (@ Iout = -250μA)
VOH
IOVDD-0.4
-
“L” level output voltage (@ Iout = 250μA)
VOL
-
-
Tri-state Leakage Current
IOLK
All pins except for XP, YP, XN, YN pins
-10
XP, YP, XN, YN pins
-10
εΠονϯάಛੑ
(Ta=-40°C to 85°C, VCC=2.2V to 3.6V, IOVDD = 1.5V to VCC, CL=50pF)
Parameter
Symbol
min
typ
Touch Panel (A/D Converter)
Throughput Rate
DCLK
frequency
duty
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 Output Delay after DCLK “↓”
CSN “↑” to DCLK Ignored
CSN “↑” to BUSY Hi-Z state
CSN “↑” to DOUT Hi-Z state
fs
fDCLK
duty
tTRK
tCONV
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
t11
t12
10
40
50
1.428
100
190
190
100
10
0
Note 5. ࣮ࡍͷτϥοΩϯά࣌ؒ͸ɺ3tDCLKʹͳΓ·͢(tDCLK = 1/fDCLK)ɻ
CSN
t1
DCLK
DIN
t5
t4
t8
t7
t6
t6
t9
PD0
[AK4182A]
max.
0.2xIOVDD
10
0.4
10
10
Units
V
V
μA
V
V
μA
μA
max
125
2100
60
12
200
200
160
160
200
200
Units
kHz
kHz
%
μs
1/fDCLK
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
50%VCC
t10
50%VCC
50%VCC
t2
BUSY
t3
DOUT




D11
D10
Figure 1. Timing Diagram

t11
t12
D0
VOH
VOL
VOH
VOL
MS0482-J-01




2007/12