AKD4184-A Datasheet, PDF (9/24 Pages) Asahi Kasei Microsystems – Analog I/F IC which includes 4-wire resistive Touch Screen Controller

ASAHI KASEI
(3) GPIO Input/Output Circuits
VCC
1234 5678
---------OFF---------
S1
SW DIP-8
JP9
GP0
JP10
GP1
JP11
GP2
JP12
GP3
JP13
GP4
JP14
GP5
JP15
GP6
JP16
GP7
JP20
C10
PULL_UP
0.1u
U2
[AKD4184-A]
RN1
9
8
7
6
5
4
3
2
1
100k
GP7
GP6
GP5
GP4
GP3
GP2
GP1
GP0
9
8
7
6
5
4
3
2
1
RN2
100k
74AVC8T245
IFVCC
C11
0.1u
JP19
LED_EN
R55
100k
R34
R35
R36
R37
R38
R39
R40
R41
1k
1k
1k
1k
1k
1k
1k
1k
LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8
GP0 GP1 GP2 GP3 GP4 GP5 GP6 GP7
Figure 6. GPIO Input/Output Circuits
∗ AKM assumes no responsibility for the trouble when using the above circuit examples.
<KM085900>
-9-
2007/04