EKK8011E ELAN Microelectronics Corp, EKK8011E Datasheet - Page 33

• Manufacturer Part Number: EKK8011E
• Description: Usb And Ps/2 Keyboard Encoder
• Manufacturer: ELAN Microelectronics Corp

11 Application Circuits
Product Specification (V1.2) 07.09.2009
(This specification is subject to change without further notice)
For EMC issue:
For EMC issue:
PORT
D- / DATA
The USB shielding connect to the GND,and the ground grid on the membrane
D+ / CLK
Option1&Option2
for ESD part.
The USB shielding connect to the GND,and the ground grid on the membrane
PORT
Option1&Option2
for ESD part.
SHLD
D- / DATA
VDD
D+ / CLK
VSS
Ground Grid
Ground Grid
-Option2
SHLD
VDD
VSS
SMD Bead
-Option2
The capacitance C6&C7 have to close to micro-controller
D+/D- signal line have the short
The capacitance C6&C7 have to close to micro-controller
D+/D- signal line have the short
Recommand to have ground grid on the membrane
Internal Func.1
Recommand to have ground grid on the membrane
SMD Bead
R2 33 Ohm
R3 33 Ohm
SW1
R2 33 Ohm
R3 33 Ohm
USB Cable have the shielding
USB Cable have the shielding
SMD Bead
-Option1
Figure 11-1 eKK8011E QFP (or Chip Form) Application Circuit
0.1uF
SW2
Internal Func.2
C1
Figure 11-2 eKK8011E DIP Form Application Circuit
C1
C2
C3
C4
C5
C6
C7
C14
C13
C12
C11
C15
SW1
trace to the MCU
SW1: Internal Function 1
SW2: Internal Function 2
R1 10 Ohm
trace to the MCU
0.1uF
C1
R1 10 Ohm
SW2
0.1uF
C2
C3
10uF
C2
C7
0.1uF
4.7uF
MODE
44
10
11
C1
C2
C3
C4
C5
C6
C7
C14
C13
C12
C11
C15
1
2
3
4
5
6
7
8
9
C3
10uF
P90
P91
P92
P93
P94
P95
P96
P97
P50
P51
P52
P53
U3
4.7uF
C7
eKK8011E
Mode LED
30p
10
11
12
13
14
15
16
17
18
19
20
C4
1
2
3
4
5
6
7
8
9
U1
Resonator
VSS
V3.3
D+/CLK/P74
D-/DATA/P75
P90
P91
P92
P93
P94
P95
P50
P51
P52
P53
P54
P55
P56
P57
P80
P81
eKK8011E
6MHz
OSCO
Title
Size
Date:
P70
P71
P72
P67
P66
P65
P64
P63
P62
P61
P60
P87
30p
OSCI
VDD
C5
P70
P71
P72
P67
P66
P65
P64
P63
P62
P61
P60
P87
P86
P85
P84
P83
P82
A
34
33
32
31
30
29
28
27
26
25
24
23
Title
Size
Date:
C6
10uF
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
<Title>
Document Number
<Doc>
A
Tuesday , June 23, 2009
eKK8011E Application Circuit
Document Number
<Doc>
Tuesday , June 23, 2009
6MHz
Resonator
USB & PS/2 Keyboard Encoder
R7
R6
R5
R4
R3
R2
R1
R0
C17
C16
C0
C9
C8
C10
R7
R6
R5
R4
R3
R2
R1
R0
C17
C16
C0
C9
C8
C10
C4
30p
30p
C5
C6
10uF
Sheet
Sheet
CAPS
1
CAPS
of
1
NUM
NUM
1
of
Rev
<Rev Code>
eKK8011E
SCROLL
SCROLL
1
Rev
V1.0
• 29