eKM8025
USB & PS/2 Mouse Controller
◆eKM8025AC/eKM8025BC (20-Pin) for 3D5Key
□□□□□□□□
4 3 2 1 20191817
1z
2
20
19
18
17
16
15
14
13
12
11
M KEY□
L KEY□
Z1□
□X1
□X2
(0,0)
3
□Y1
+
4
Z2□
□Y2
5
R KEY□
P KEY/K_OP□
VSS□
□IR_C
□N KEY
□D+ / CLK
□D- / DATA
□VDD
□OSCO
6
□
□
□
□
7
5
6
8
16
□
8
15
VSS□
□
9
14
V3.3□
9
10111213
10
OSCI□
□
□□□□
eKM8025AC/eKM8025BC (20-Pin)
Bounding PAD
Symbol I/O PIN
Function
M
I
1
2
Middle Key Input
Left Key Input
L
I
Z1
I
3
4
Z axis Input 1
Z axis Input 2
Right Key Input
Z2
I
R
I/O
5
6
K_OP
P
I
This pin should be connected to GND with 1M Ω resistance.
I
6
7,8
9
Pre Key Input
VSS
-
GND
V3.3V
OSCI
OSCO
VDD
O
3.3V DC voltage output from internal regulator. This pin has to be tied to a 4.7μF capacitor.
I
10
11
12
13
14
15
16
6MHz ceramic resonator input.
Return path for 6-MHz ceramic resonator.
5 V Power Input
I/O
-
D- / DATA
D+ / CLK
N
I/O
USB D- or PS/2 Data I/O
USB D+ or PS/2 CLK I/O
Next Key Input
I/O
I
O
I
IR_C
Y2
IR(Sensor power) Control Pin. 1
17
Y axis Input 2
Y1
I
18
19
Y axis Input 1
X axis Input 2
X2
I
X1
I
20
X axis Input 1
4
This specification are subject to be changed without notice Revision1.00(2400/2500) 2006/7/11
ELAN [ ELAN MICROELECTRONICS CORP ]
