EMC EKK8301

eKK8301
Keyboard Encoder
Product
Specification
DOC. VERSION 1.0
ELAN MICROELECTRONICS CORP.
August 2002
Trademark Acknowledgments:
IBM is a registered trademark and PS/2 is a trademark of IBM.
Windows is a trademark of Microsoft Corporation.
ELAN and ELAN logo
are trademarks of ELAN Microelectronics Corporation.
Copyright © 2005 by ELAN Microelectronics Corporation
All Rights Reserved
Printed in Taiwan
The contents of this specification are subject to change without further notice. ELAN Microelectronics assumes
no responsibility concerning the accuracy, adequacy, or completeness of this specification. ELAN
Microelectronics makes no commitment to update, or to keep current the information and material contained in
this specification. Such information and material may change to conform to each confirmed order.
In no event shall ELAN Microelectronics be made responsible for any claims attributed to errors, omissions, or
other inaccuracies in the information or material contained in this specification. ELAN Microelectronics shall
not be liable for direct, indirect, special incidental, or consequential damages arising from the use of such
information or material.
The software (if any) described in this specification is furnished under a license or nondisclosure agreement, and
may be used or copied only in accordance with the terms of such agreement.
ELAN Microelectronics products are not intended for use in life support appliances, devices, or systems. Use of
ELAN Microelectronics product in such applications is not supported and is prohibited.
NO PART OF THIS SPECIFICATION MAY BE REPRODUCED OR TRANSMITTED IN ANY FORM OR
BY ANY MEANS WITHOUT THE EXPRESSED WRITTEN PERMISSION OF ELAN
MICROELECTRONICS.
ELAN MICROELECTRONICS CORPORATION
Headquarters:
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Tel: +886 3 563-9977
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Elan (HK) Microelectronics
Corporation, Ltd.
Elan Information
Technology Group
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68 Mody Road, Tsimshatsui
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Elan Microelectronics Corp.
(Europe)
Elan Microelectronics
Shenzhen, Ltd.
Elan Microelectronics
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Contents
Contents
1
2
3
4
5
6
7
8
9
10
11
12
13
General Description .................................................................................................. 1
Features ..................................................................................................................... 1
Applications............................................................................................................... 1
Pin Configuration ...................................................................................................... 2
Pin Description.......................................................................................................... 3
Function Descriptions .............................................................................................. 4
6.1
Keyboard Buffer ................................................................................................. 4
6.2
Power-on Reset and Self Test ............................................................................ 4
6.3
Keyboard Data Output........................................................................................ 4
6.4
Keyboard Data Input .......................................................................................... 4
6.5
Command from the System................................................................................ 5
6.6
Command to the System.................................................................................... 9
6.7
Keyboard Scan Code Table................................................................................ 9
6.8
Internal-Multi Function...................................................................................... 19
6.9 Application Function ......................................................................................... 19
Absolute Maximum Ratings ................................................................................... 20
DC Electrical Characteristics ................................................................................. 20
AC Electrical Characteristics ................................................................................. 20
Timing Diagrams ..................................................................................................... 21
Application Circuit .................................................................................................. 22
Application Matrix ................................................................................................... 23
PAD Diagram............................................................................................................ 24
Product Specification (V1.0) 08.07.2002
• iii
Contents
Specification Revision History
Doc. Version
1.0
iv •
Revision Description
Date
2002/08/07
Product Specification (V1.0) 08.07.2002
eKK8301
Keyboard Encoder
1
General Description
The eKK8301 microcontroller is dedicated to a keyboard encoder, specially designed
for IBM PC AT and all compatible machines. The eKK8301 control all scan codes,
three LEDs status, scan timing and communications between the keyboard and PC.
It is easy to implement a high performance, low cost keyboard with the minimal
external components.
2
Features
Low cost - eliminate need external components.
Phantom key detects.
RC oscillator (1.8432MHz).
Support scan code set 1, 2 and 3.
Support PC AT and PS/2 keyboard.
Low power CMOS device technology.
Internal pull-up resistor.
Tri-state outputs for easy board application.
Built-in 4K ROM.
Support WINDOWS TM 95, 98, 2000, ME keys.
104/107 keys with multi-media or other special application keyboard encoder.
WINDOWS is registered trademarks of Microsoft corporation.
3
Applications
IBM PC AT or compatible machine keyboard.
IBM PS/2 model 30, 50, 60, 80 or compatible machine keyboard.
Japanese keyboard.
Korean keyboard.
Brazilian keyboard.
European keyboard.
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
•1
eKK8301
Keyboard Encoder
4
2•
Pin Configuration
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
eKK8301
Keyboard Encoder
5
Pin Description
Symbol
I/O
Function
P50
O
Column 3 Low output scan line, 3-state
P51
O
Column 4 Low output scan line, 3-state
P52
O
Column 5 Low output scan line, 3-state
P53
O
Column 6 Low output scan line, 3-state
P54
O
Column 7 Low output scan line, 3-state
P55
O
Column 14 Low output scan line, 3-state
P56
O
Column 13 Low output scan line, 3-state
P57
O
Column 12 Low output scan line, 3-state
P80
O
Column 11 Low output scan line, 3-state
P81
O
Column 15 Low output scan line, 3-state
P82
O
Column 10 Low output scan line, 3-state
P83
O
Column 8 Low output scan line, 3-state
P84
O
Column 9 Low output scan line, 3-state
P85
O
Column 0 Low output scan line, 3-state
P86
O
Column 16 Low output scan line, 3-state
P87
O
Column 17 Low output scan line, 3-state
P90
O
Column 1 Low output scan line, 3-state
P91
O
Column 2 Low output scan line, 3-state
VSS
PWR
SCROLL
O
Scroll Lock Indicator
NUM
O
NUM Lock Indicator
CAPS
O
Caps Lock Indicator
P60
I
Row 0 Input scan line, internal pull high ( 17KΩ)
P61
I
Row 1 Input scan line, internal pull high ( 17KΩ)
P62
I
Row 2 Input scan line, internal pull high ( 17KΩ)
P63
I
Row 3 Input scan line, internal pull high ( 17KΩ)
P64
I
Row 4 Input scan line, internal pull high ( 17KΩ)
P65
I
Row 5 Input scan line, internal pull high ( 17KΩ)
P66
I
Row 6 Input scan line, internal pull high ( 17KΩ)
P67
I
Row 7 Input scan line, internal pull high ( 17KΩ)
CLK
I/O
CLOCK line for IBM communication , imternal pull high (2.2 KΩ…)
DATA
I/O
DATA line for IBM communication , internal pull high (2.2 KΩ…)
VDD
I
+5V Power Supply
OSCO
O
CLOCK output
R_OSCI
I
Connect 51K OHM resistor for 1.8432 MHz oscillation
Ground
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
3
eKK8301
Keyboard Encoder
6
Function Descriptions
6.1 Keyboard Buffer
The keyboard will buffer 16 bytes in a first-in first-out order when the system is able to
receive scan codes from the keyboard. The response codes and repeated codes will
not be buffered. If keystrokes generate a multiple-byte sequence, the entire
sequence must fit into the buffer or the keystroke is discarded and a buffer-overrun
condition occurs.
6.2 Power-on Reset and Self Test
The duration of the keyboard Power-on Reset(POR) should be within 150
milliseconds and 2 seconds after the power is applied to the keyboard.
After executing POR, the keyboard executes a self test. The LEDs are turned on at
the beginning and off at the end of the self test. The self test takes a minimum 300
milliseconds and a maximum 500 milliseconds. If the self test is successful, a
completion code AA hex is sent to the system and the keyboard starts scanning. If
the self test fails, and error code is sent, the keyboard is disabled and waits for a
command from the system. The completion codes are sent between 450
milliseconds and 2.5 seconds after POR, and between 300 and 500 milliseconds after
a RESET command is acknowledged.
6.3 Keyboard Data Output
When the keyboard is ready to send data to the system, it first checks clock and data
lines. If either one is in the low state, data is stored in the keyboard buffer. If both
are in the high state, keyboard starts clocking data out. Data will be valid before the
trailing edge and after the leading edge of the clock pulse. During the transmission
the keyboard checks the clock line at least every 60 microseconds. If the system
lowers the clock lines before the leading edge of the 10th clock, the keyboard should
stop sending, then buffer the data and return clock and data lines to high state.
6.4 Keyboard Data Input
When the system is ready to send data to the keyboard, if first checks clock line to
see if keyboard is sending data. If keyboard is not sending data or it is sending data
but has not reached the 10th clock, the system can inhibit the interface by forcing the
clock line low for more than 60 microseconds and prepares to send data. The
keyboard checks clock line status at least every 5 milliseconds. If a system Request
to Send(RTS) is detected, the keyboard clocks 11 bits in. After the 10th bit, the
keyboard checks for a high state in data line then pulls it low and clocks one more bit
to signal the system that data has been received. If data is low after the 10th bit, it
indicates a frame error. The keyboard should continue to count until data line goes
high, then pulls it low and issues a RESEND to the system.
4•
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
eKK8301
Keyboard Encoder
6.5 Command from the System
The system can send commands to the keyboard at any time. The keyboard needs
to respond within 20 milliseconds, unless the system prevents keyboard output, when
doing self test or executing a RESET. The following are the keyboard input
commands and the actions that keyboard needs to take.
Set/Reset Status indicators (Hex ED)
- Responds ACK.
- Receives option byte.
- Responds ACK.
- Updates status indicators.
- Returns to previous scanning state.
Echo (Hex EEH)
- Responds with EE hex.
- Returns to previous scanning state.
Invalid commands (Hex EF and F1)
- Returns a RESEND command.
- Returns to previous scanning state.
Select Alternate Scan Codes (Hex F0)
- Responds ACK.
- Clears output buffer.
- Sets the default typematic rate/delay.
- Clears last typematic key.
- Receives option byte.
- Responds ACK.
- Option byte =
01 : selects scan code set 1
02 : selects scan code set 2
03 : selects scan code set 3
- Returns to previous scanning rate.
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
5
eKK8301
Keyboard Encoder
Read ID (F2)
- Responds with ACK.
- Discontinues scanning.
- Sends two ID bytes. The second byte will be sent within 500 us after first byte.
- Resumes scanning.
Set Typematic Rate/Delay (Hex F3)
- Responds ACK.
- Receives rate/delay value byte.
- Responds ACK.
- Set rate/delay ( * Note 1)
- Returns to previous scanning state.
* Note 1
1. Repeat period = (8 + A) x (2 ^ B) x 0.00417 seconds
A : binary value of bits 2, 1, and 0.
B : binary value of bits 4 and 3.
2. Delay = ( C + 1 ) x 250 milliseconds
C : binary value of bits 6 and 5. Bit 7 is always 0.
6•
bit 4~ bit 0
Typematic rate ±20%
bit 4~ bit 0
typematic rate ±20%
00000
30.0
10000
7.5
00001
26.7
10001
6.7
00010
24.0
10010
6.0
00011
21.8
10011
5.5
00100
20.0
10100
5.0
00101
18.5
10101
4.6
00110
17.1
10110
4.3
00111
16.0
10111
4.0
01000
15.0
11000
3.7
01001
13.3
11001
3.3
01010
12.0
11010
3.0
01011
10.9
11011
2.7
01100
10.0
11100
2.5
01101
9.2
11101
2.3
01110
8.6
11110
2.1
01111
8.0
11111
2.0
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
eKK8301
Keyboard Encoder
3. Default rate = 10.9 chars/sec + 20%
Default delay = 500 ms ± 20%
Enable (Hex F4)
- Responds with ACK.
- Clears output buffer.
- Clears last typematic key.
- Start scanning.
Default Disable (Hex F5)
- Responds with ACK.
- Resets all conditions to power-on state.
- Clears output buffer.
- Sets the default key type (scan code set 3 only).
- Set the default typematic rate/delay.
- Clears last typematic key.
- Stops scanning.
Set Default (Hex F6)
- Responds with ACK.
- Resets all conditions to power-on state.
- Clears output buffer.
- Sets the default key type (scan code set 3 only)
- Set the default typematic rate/delay.
- Clears last typematic key.
- Continues scanning.
Set All Keys (Hex F7, F8, F9, FA)
- Responds ACK.
- Clears output buffer.
- Sets all key type (affect only scan code set 3 operation).
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
7
eKK8301
Keyboard Encoder
F7 : Typematic
F8 : Make / Break
F9 : Make
FA : Typematic / Make / Break
- Returns to previous scanning rate.
Set Key Type (Hex FB, FC, FD)
- Responds ACK.
- Clears output buffer.
- Receives key ID byte.
- Responds ACK.
- Set key ID type (affect only scan code set 3 operation).
FB : Typematic
FC : Make / Break
FD : Make
- Returns to previous scanning rate.
Resend (Hex FE)
- Sends the previous output again. If the previous byte is RESEND, the last byte
before RESEND shall be sent.
Reset (Hex FF)
- Responds ACK.
- Checks clock and data lines – Reset in the high state for at least 500 microseconds
or receives another command.
- Default to scan code set 2.
8•
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
eKK8301
Keyboard Encoder
6.6 Command to the System
The following are the keyboard output commands.
Acknowledge (Hex FA)
The keyboard sends and acknowledge in response to any valid command from the
system except for RESEND and ECHO.
BAT Completion Code (Hex AA)
This command is issued after successful completion of keyboard self test.
Echo (Hex EE)
The keyboard sends this code in response to an ECHO command.
Keyboards ID (Hex 83 AB)
The 2 byte ID is issued to respond to READ ID command. The low byte is sent first,
followed by the high byte.
Keyboard buffer Overrun (Hex 00 or FF)
If keyboard buffer overflows, the overrun code will replace the last byte in the buffer.
If the keyboard is using scan code set 1, the code is hex FF. For sets 2 and 3, the
code is hex 00.
Resend (Hex FE)
When the keyboard receives an invalid input or any input with incorrect parity, the
RESEND command is sent.
6.7 Keyboard Scan Code Table
The keyboard contains 3 scan code sets. The system defaults to scan code set 2,
but can be switched to set 1 or set 3. The following tables show the key numbers and
three scan code sets in hexadecimal values. All the keys are typematics except for
the pause key. When a key is pressed down, the make scan code is sent to the
system. When the key is released, its break code is sent. If two or more keys are
held down, only the last key pressed repeats at the typematic rate. Typematic
operation stops when the last pressed key is released, even if other keys are being
released or some other keys are still held down.
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
9
eKK8301
Keyboard Encoder
The following table shows three scan code sets used in the keyboard.
Scan code set 1
10 •
Key
Make code
Break code
Key
Make code
Break code
`(~)
29
A9
X
2D
AD
1
02
82
C
2E
AE
2
03
83
V
2F
AF
3
04
84
B
30
B0
4
05
85
N
31
B1
5
06
86
M
32
B2
6
07
87
,(<)
33
B3
7
08
88
.(>)
34
B4
8
09
89
/(?)
35
B5
9
0A
8A
SHIFT_R
36
B6
0
0B
8B
CTRL_L
1D
9D
-(-)
0C
8C
ALT_L
38
B8
=(+)
0D
8D
SPACE
39
B9
BACK SPACE
0E
8E
ALT_R
E0 38
E0 B8
TAB
0F
8F
CTRL_R
E0 1D
E0 9D
Q
10
90
NUM
45
C5
W
11
91
(7)
47
C7
E
12
92
(4)
4B
CB
R
13
93
(1)
4F
CF
T
14
94
(8)
48
C8
Y
15
95
(5)
4C
CC
U
16
96
(2)
50
D0
I
17
97
(˜)
52
D2
O
18
98
(*)
37
B7
P
19
99
(9)
49
C9
[({}
1A
9A
(6)
4D
CD
](})
1B
9B
(3)
51
D1
\(¦)@1
2B
AB
(DEL)
53
D3
CAPS
3A
BA
(-)
4A
CA
A
1E
9E
(+)
4E
CE
S
1F
9F
(ENTER)
E0 1C
E0 9C
D
20
A0
ESC
01
81
F
21
A1
F1
3B
BB
G
22
A2
F2
3C
BC
H
23
A3
F3
3D
BD
J
24
A4
F4
3E
BE
K
25
A5
F5
3F
BF
L
26
A6
F6
40
C0
;(:)
27
A7
F7
41
C1
'(")
28
A8
F8
42
C2
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
eKK8301
Keyboard Encoder
Key
Make code
Break code
Key
Make code
Break code
K42 @2
2B
AB
F9
43
C3
ENTER
1C
9C
F10
44
C4
SHIFT_L
2A
AA
F11
57
D7
K45 @2
56
D6
F12
58
D8
Z
2C
AC
SCROLL
46
C6
Key
Base Case,or
Shift + Nun
Lock
Make/Break
Shift Case @3
Make/Break
Num Lock
Make/Break
INS
E0 52 / E0 D2
E0 AA E0 52 / E0 D2 E0 2A
E0 2A E0 52 / E0 D2 E0 AA
DEL
E0 53 / E0 D3
E0 AA E0 53 / E0 D3 E0 2A
E0 2A E0 53 / E0 D3 E0 AA
LEFT
E0 4B / E0 CB
E0 AA E0 4B / E0 CB E0 2A
E0 2A E0 4B / E0 CB E0 AA
HOME
E0 47 / E0 C7
E0 AA E0 47 / E0 C7 E0 2A
E0 2A E0 47 / E0 C7 E0 AA
END
E0 4F / E0 CF
E0 AA E0 4F / E0 CF E0 2A
E0 2A E0 4F / E0 CF E0 AA
UP
E0 48 / E0 C8
E0 AA E0 48 / E0 C8 E0 2A
E0 2A E0 48 / E0 C8 E0 AA
DOWN
E0 50 / E0 D0
E0 AA E0 50 / E0 D0 E0 2A
E0 2A E0 50 / E0 D0 E0 AA
PAGE UP
E0 49 / E0 C9
E0 AA E0 49 / E0 C9 E0 2A
E0 2A E0 49 / E0 C9 E0 AA
PAGE
DOWN
E0 51 / E0 D1
E0 AA E0 51 / E0 D1 E0 2A
E0 2A E0 51 / E0 D1 E0 AA
RIGHT
E0 4D / ED CD
E0 AA E0 4D / E0 CD E0 2A
E0 2A E0 4D / E0 CD E0 AA
Key
Scan Code Make/Break
Shift Case Make/Break @3
(/)
E0 35 / E0 B5
E0 AA E0 35 / E0 B5 E0 2A
Key
Scan Code Make/Break
Ctrl Case, Shift Case Make/ Break
Alt Case
Make/Break
PRINT
E0 2A E0 37 / E0 B7 E0 AA
E0 37 / E0 B7
54 / D4
Key
Make Code
Ctrl Key Pressed
PAUSE @4
E1 1D 45 E1 9D C5
E0 46 E0 C6
Note :
@1 : 101-key keyboard only.
@2 : 102-key keyboard only.
@3 : If the left Shift key is held down, the AA/2A shift make and break is sent with the
other scan codes. If the right Shift key is held down, B6/36 is sent. If both Shift
keys are down, both sets of codes are sent with the other scan code.
@4 : This key is not typematic. All associated scan codes occur on the make of the
key.
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
11
eKK8301
Keyboard Encoder
scan code set 2
12 •
Key
Make code
Break code
Key
Make code
Break code
`(~)
OE
F0 OE
X
22
F0 22
1
16
F0 16
C
21
F0 21
2
1E
F0 1E
V
2A
F0 2A
3
26
F0 26
B
32
F0 32
4
25
F0 25
N
31
F0 31
5
2E
F0 2E
M
3A
F0 3A
6
36
F0 36
,(<)
41
F0 41
7
3D
F0 3D
.(>)
49
F0 49
8
3E
F0 3E
/(?)
4A
F0 4A
9
46
F0 46
SHIFT_R
59
F0 59
0
45
F0 45
CTRL_L
14
F0 14
-(-)
4E
F0 4E
ALT_L
11
F0 11
=(+)
55
F0 55
SPACE
29
F0 29
BACK SPACE
66
F0 66
ALT_R
E0 11
E0 F0 11
TAB
0D
F0 0D
CTRL_R
E0 14
E0 F0 14
Q
15
F0 15
NUM
77
F0 77
W
1D
F0 1D
(7)
6C
F0 6C
E
24
F0 24
(4)
6B
F0 6B
R
2D
F0 2D
(1)
69
F0 69
T
2C
F0 2C
(8)
75
F0 75
Y
35
F0 35
(5)
73
F0 73
U
3C
F0 3C
(2)
72
F0 72
I
43
F0 43
()
70
F0 70
O
44
F0 44
(*)
7C
F0 7C
P
4D
F0 4D
(9)
7D
F0 7D
[({)
54
F0 54
(6)
74
F0 74
](})
5B
F0 5B
(3)
7A
F0 7A
\(¦)@6
5D
F0 5D
(DEL)
71
F0 71
CAPS
58
F0 58
(-)
7B
F0 7B
A
1C
F0 1C
(+)
79
F0 79
S
1B
F0 1B
(ENTER)
E0 5A
E0 F0 5A
D
23
F0 23
ESC
76
F0 76
F
2B
F0 2B
F1
05
F0 05
G
34
F0 34
F2
06
F0 06
H
33
F0 33
F3
04
F0 04
J
3B
F0 3B
F4
0C
F0 0C
K
42
F0 42
F5
03
F0 03
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
eKK8301
Keyboard Encoder
Key
Make code
Break code
Key
Make code
Break code
L
4B
F0 4B
F6
0B
F0 0B
;(:)
4C
F0 4C
F7
83
F0 83
'(")
52
F0 52
F8
0A
F0 0A
K42 @7
5D
F0 5D
F9
01
F0 01
ENTER
5A
F0 5A
F10
09
F0 09
SHIFT_L
12
F0 12
F11
78
F0 78
K45 @7
61
F0 61
F12
07
F0 07
Z
1A
F0 1A
SCROLL
7E
F0 7E
Key
Base Case,or Shift + Nun Lock
Make/Break
INS
E0 70 / E0 F0 70
DEL
E0 71 / E0 F0 71
LEFT
E0 6B / E0 F0 6B
HOME
E0 6C / E0 F0 6C
END
E0 69 / E0 F0 69
UP
E0 75 / E0 F0 75
DOWN
E0 72 / E0 F0 72
PAGE UP
E0 7D / E0 F0 7D
PAGE DOWN
E0 7A / E0 F0 7A
RIGHT
E0 74 / E0 F0 74
Shift Case @7
Make/Break
Num Lock
Make/Break
E0 F0 12 E0 70
E0 12 E0 70
/ E0 F0 70 E0 12
/ E0 F0 70 E0 F0 12
E0 F0 12 E0 71
E0 12 E0 71
/ E0 F0 71 E0 12
/ E0 F0 71 E0 F0 12
E0 F0 12 E0 6B
E0 12 E0 6B
/ E0 F0 6B E0 12
/ E0 F0 6B E0 F0 12
E0 F0 12 E0 6C
E0 12 E0 6C
/ E0 F0 6C E0 12
/ E0 F0 6C E0 F0 12
E0 F0 12 E0 69
E0 12 E0 69
/ E0 F0 69 E0 12
/ E0 F0 69 E0 F0 12
E0 F0 12 E0 75
E0 12 E0 75
/ E0 F0 75 E0 12
/ E0 F0 75 E0 F0 12
E0 F0 12 E0 72
E0 12 E0 72
/ E0 F0 72 E0 12
/ E0 F0 72 E0 F0 12
E0 F0 12 E0 7D
E0 12 E0 7D
/ E0 F0 7D E0 12
/ E0 F0 7D E0 F0 12
E0 F0 12 E0 7A
E0 12 E0 7A
/ E0 F0 7A E0 12
/ E0 F0 7A E0 F0 12
E0 F0 12 E0 74
E0 12 E0 74
/ E0 F0 74 E0 12
/ E0 F0 74 E0 F0 12
Key
Scan Code Make/Break
Shift Case Make/Break @3
(/)
E0 4A / E0 F0 4A
E0 F0 12 E0 4A/E0 F0 4A E0 12
Key
Scan Code Make/Break
Ctrl Case, Shift Case
Make/ Break
Alt Case
Make/Break
PRINT
E0 12 E0 7C / E0 F0 7C E0 F0 12
E0 7C /E0 F0 7C
84/ F0 84
Key
Make Code
Ctrl Key Pressed
PAUSE @8
E1 14 77 E1 F0 14 F0 77
E0 7E E0 F0 7E
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
13
eKK8301
Keyboard Encoder
Note :
@5 : 101-key keyboard only.
@6 : 102-key keyboard only.
@7 : If the left Shift key is held down, the F0 12/12 shift make and break is sent with
the other scan codes. If the right Shift key is held down, F0 59/59 is sent. If
both Shift keys are down, both sets of codesare sent with the other scan code.
@8 : This key is not typematic. All associated scan codes occur on the make of the
key.
scan code set 3
14 •
Key
Make code
Break code
Default Key State
`(~)
OE
F0 OE
Typematic
1
16
F0 16
Typematic
2
1E
F0 1E
Typematic
3
26
F0 26
Typematic
4
25
F0 25
Typematic
5
2E
F0 2E
Typematic
6
36
F0 36
Typematic
7
3D
F0 3D
Typematic
8
3E
F0 3E
Typematic
9
46
F0 46
Typematic
0
45
F0 45
Typematic
-(_)
4E
F0 4E
Typematic
=(+)
55
F0 55
Typematic
BACK SPACE
66
F0 66
Typematic
TAB
0D
F0 0D
Typematic
Q
15
F0 15
Typematic
W
1D
F0 1D
Typematic
E
24
F0 24
Typematic
R
2D
F0 2D
Typematic
T
2C
F0 2C
Typematic
Y
35
F0 35
Typematic
U
3C
F0 3C
Typematic
I
43
F0 43
Typematic
O
44
F0 44
Typematic
Key
Make code
Break code
Default Key State
P
4D
F0 4D
Typematic
[({}
54
F0 54
Typematic
]())
5B
F0 5B
Typematic
\(¦)@11
5C
F0 5C
Typematic
CAPS
14
F0 14
Make/Break
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
eKK8301
Keyboard Encoder
Key
Make code
Break code
Default Key State
A
1C
F0 1C
Typematic
S
1B
F0 1B
Typematic
D
23
F0 23
Typematic
F
2B
F0 2B
Typematic
G
34
F0 34
Typematic
H
33
F0 33
Typematic
J
3B
F0 3B
Typematic
K
42
F0 42
Typematic
L
4B
F0 4B
Typematic
;(:)
4C
F0 4C
Typematic
'(")
52
F0 52
Typematic
K42 @12
53
F0 53
Typematic
ENTER
5A
F0 5A
Typematic
SHIFT_L
12
F0 12
Make/Break
K45 @12
13
F0 13
Typematic
Z
1A
F0 1A
Typematic
X
22
F0 22
Typematic
C
21
F0 21
Typematic
V
2A
F0 2A
Typematic
B
32
F0 32
Typematic
N
31
F0 31
Typematic
M
3A
F0 3A
Typematic
,(<)
41
F0 41
Typematic
.(>)
49
F0 49
Typematic
/(?)
4A
F0 4A
Typematic
SHIFT_R
59
F0 59
Make/Break
CTRL_L
11
F0 11
Make/Break
ALT_L
19
F0 19
Make/Break
SPACE
29
F0 29
Typematic
ALT_R
39
F0 39
Make only
CTRL_R
58
F0 58
Make only
INS
67
F0 67
Make only
DEL
64
F0 64
Typematic
LEFT
61
F0 61
Typematic
HOME
6E
F0 6E
Make only
END
65
F0 65
Make only
UP
63
F0 63
Typematic
DOWN
60
F0 60
Typematic
PAGE UP
6F
F0 6F
Make only
PAGE DOWN
6D
F0 6D
Make only
RIGHT
6A
F0 6A
Typematic
NUM
76
F0 76
Make only
(7)
6C
F0 6C
Make only
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
15
eKK8301
Keyboard Encoder
Key
Make code
Break code
Default Key State
(4)
6B
F0 6B
Make only
(1)
69
F0 69
Make only
(/)
77
F0 77
Make only
(8)
75
F0 75
Make only
(5)
73
F0 73
Make only
(2)
72
F0 72
Make only
()
70
F0 70
Make only
(*)
7E
F0 7E
Make only
(9)
7D
F0 7D
Make only
(6)
74
F0 74
Make only
(3)
7A
F0 7A
Make only
(DEL)
71
F0 71
Make only
(-)
84
F0 84
Make only
(+)
7C
F0 7C
Typematic
(ENTER)
79
F0 79
Make only
ESC
08
F0 08
Make only
F1
07
F0 07
Make only
F2
0F
F0 0F
Make only
F3
17
F0 17
Make only
F4
1F
F0 1F
Make only
F5
27
F0 27
Make only
F6
2F
F0 2F
Make only
F7
37
F0 37
Make only
F8
3F
F0 3F
Make only
F9
47
F0 47
Make only
F10
4F
F0 4F
Make only
F11
56
F0 56
Make only
F12
5E
F0 5E
Make only
PRINT
57
F0 57
Make only
SCROLL
5F
F0 5F
Make only
PAUSE
62
F0 62
Make only
Note :
@ 9 : 101-key keyboard only
@10 : 102-key keyboard only
16 •
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
eKK8301
Keyboard Encoder
New key codes for scan set 1:
New key
Make
Break
LWIN
E0 5B
E0 DB
RWIN
E0 5C
E0 DC
APP
E0 5D
E0 DD
N-CHG (131)
7B
FB
CHG (132)
79
F9
ROMA (133)
70
F0
K14
7D
FD
K56
73
F3
K107
7E
FE
KL
F1
X
KR
F0
X
POWER
E0 5E
E0 DE
SLEEP
E0 5F
E0 DF
WAKE UP
E0 63
E0 E3
New key
Make
Break
LWIN
E0 1F
E0 F0 1F
RWIN
E0 27
E0 F0 27
APP
E0 2F
E0 F0 2F
N-CHG (131)
67
F0 67
CHG (132)
64
F0 64
ROMA (133)
13
F0 13
K14
6A
F0 6A
K56
51
F0 51
K107
6D
F0 6D
KL
F1
X
KR
F2
X
POWER
E0 37
E0 F0 37
SLEEP
E0 3F
E0 F0 3F
WAKE UP
E0 5E
E0 F0 5E
New key codes for scan set 2:
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
17
eKK8301
Keyboard Encoder
New key codes for scan set 3:
New key
Make
Break
LWIN
8B
F0 8B
MAKE/BREAK
RWIN
8C
F0 8C
MAKE/BREAK
APP
8D
F0 8D
MAKE/BREAK
N-CHG (131)
85
F0 85
MAKE
CHG (132)
86
F0 86
MAKE
ROMA (133)
87
F0 87
MAKE
K14
5D
F0 5D
TYPEMATIC
K56
51
F0 51
TYPEMATIC
K107
7B
F0 7B
TYPEMATIC
KL
F1
X
KR
F2
X
POWER
X
X
SLEEP
X
X
WAKE UP
X
X
Key Function
18 •
SET1
SET2
MAKE
BREAK
MAKE
BREAK
K130 : WWWBack
E06A
E0EA
E038
E0F038
K131 : WWWForward
E069
E0E9
E030
E0F030
K132 : WWWstop
E068
E0E8
E028
E0F028
K133 : WWWRefresh
E067
E0E7
E020
E0F020
K134 : WWWSearch
E065
E0E5
E010
E0F010
K135 : WWWFavorites
E066
E0E6
E018
E0F018
K136 : WWWWeb/Home
E032
E0B2
E03A
E0F03A
K137 : Mail
E06C
E0EC
E048
E0F048
K138 : Mute
E020
E0A0
E023
E0F023
K139 : Volume-
E02E
E0AE
E021
E0F021
K140 : Volume+
E030
E0B0
E032
E0F032
K141 : Play/Pause
E022
E0A2
E034
E0F034
K142 : Stop
E024
E0A4
E03B
E0F03B
K143 : PreTrack
E010
E090
E015
E0F015
K144 : Nexttrack
E019
E099
E04D
E0F04D
K145 : Media Select
E06D
E0ED
E050
E0F050
K146 : MyComputer
E06B
E0EB
E040
E0F040
K147 : Calculator
E021
E0A1
E02B
E0F02B
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
eKK8301
Keyboard Encoder
6.8 Internal-Multi Function
Multi-Media Function
Fn+
Internal Function
O.S. Function
Pad_2 = Volume-
Pad_Enter = Web/Home
Pad_0 = MyComputer
Pad_3 = Play/Pause
Pad_+
= Mail
Pad_1 = Calculator
Pad_4 = PreTrack
Pad_-
= Favorites
Pad_5 = Media
Pad_.
= Search
Pad_6 = NextTrack
Right
= Forward
Pad_7 = Mute
Left
= Back
Pad_8 = Volume+
Down
= Stop
Pad_9 = Stop
Up
= Refresh
E
= Eur Key
6.9 Application Function
Default State
F Lock (LED ON)
App1
F1
App2
F2
App3
F3
App4
F4
App5
F5
App6
F6
App7
F7
App8
F8
App9
F9
App10
F10
App11
F11
App12
F12
App13
INS
App14
PrtScr
App15
ScrLk
App16
Pause
Tab
Num
SET2
Scroll Up
E045, E024, E01D, E01B
Scroll Down
E08B, E092, E091, E09F
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
19
eKK8301
Keyboard Encoder
7
Absolute Maximum Ratings
Parameter
Sym.
Supply Voltage
V CC
-0.5V to +7V
Input Voltage
V IN
-0.3V to +6V
V OUT
-0.3V to +6V
Output Voltage
Temperature under bias
Storage temperature
8
TB
0℃to 70℃
TS
-65℃ to 150℃
DC Electrical Characteristics
Parameter
Sym.
Min.
Typ.
Max.
Unit
Operating voltage
V CC
4.5
5
5.5
V
Operating supply current
I CCI
3
mA
Fosc = 6MHz
Input leakage
I IN
±1
µA
V IN =V CC ,V SS
Input high voltage
V IH
Input low voltage
V IL
0.8
V
Output low voltage
V OL1
0.4
V
I OL1 = 3.0 mA
Output low voltage for LEDS
V OL2
3.2
V
I OL2 = 10 mA
23
Kohm
V PH1 = 0V
3
Kohm
V PH2 = 0V
0.4
V
I OL3 = 5 mA
Typ.
Max.
Unit
Internal Pull-high resistance ( port
6,9 )
Internal Pull-high resistance for
DATA, CLK
Output low voltage for DATA CLK
9
2.0
R PH1
12
R PH2
1.5
Condition
V
2.2
V OL3
AC Electrical Characteristics
Parameter
Sym.
Min.
Time from DATA transition to falling edge of CLK
T1
5
25
µS
Time from rising edge of CLK to DATA transition
T2
5
T4 - 5
µS
Duration of CLK inactive
T3
30
40
50
µS
Duration of CLK active
T4
30
40
50
µS
50
µS
25
µS
Time to auxiliary device inhibit after clock 11 to
ensure
the auxiliary device does not start another
transmission
Time from inactive to active CLK transition, used to
time
when auxiliary device samples DATA
System clock
20 •
Ratings
T5
T6
FCLK
5
1.843
MHz
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
eKK8301
Keyboard Encoder
10 Timing Diagrams
Fig 3. Keyboard output data timings
Fig 4. Keyboard input data timings
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
21
eKK8301
Keyboard Encoder
11 Application Circuit
* EM78448D is the body of eKK8301
22 •
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
eKK8301
Keyboard Encoder
12 Application Matrix
R0,R60,27 R1,P61,28 R2,P62,29 R3,P63,30 R4,P64,31 R5,P65,32 R6,P66,33 R7,P67,34
C3
P50,11
C4
P51,12
C5
P52,13
C6
P53,14
C7
P54,15
C14
P55,16
C13
P56,17
C12
P57,18
C11
P80,19
E
F3
D
F4
C
ROMA
F2
3(#)
R
T
F
G
V
B
5(%)
4( $ )
U
Y
J
H
M
N
6(^)
7( & )
I
] (﹛)
K
F6
,(<)
K56
+’( = )
8(*)
O
F7
L
.(>)
APP
F8
9 ( ‘(‘ )
HOME
END
PAGE
UP
PAGE
DOWN
INS
SLEEP
DEL
POWER
+
(K)
9
(K)
8
(K)
7
(K)
K107
6
(K)
5
(K)
4
(K)
ENTER
(K)
3
(K)
2
(K)
1
(K)
C15 WAKEUP SHIFT-L SHIFT-R
P81,20
C10
P82,21
C8
P83,22
HOT11
HOT12
.
(K)
0
(K)
*
(K)
/
(K)
(K)
SPACE
NUM
HOT9
HOT10
EXT6
EXT7
Media
K14
BACK
\(|)
F11
ENTER
F12
F9
F10
P
[({}
；(：)
‘(“)
K42
/(?)
_(-)
0 ( ‘)’ )
HOT1
FN
ALT-L
F Lock
ALT-R
HOT2
PRINT
CTRL-L
F5
SCROLL
C9
P84,23
C0
P85,24
PAUSE
China yen
Eur yen
SLEEP
C16
P86,25
HOT4
WIN-L
EXT2
EXT3
EXT1
EXT4
HOT8
EXT5
C17
P87,26
C1
P90,5
C2
P91,6
K150
(KC-L)
HOT6
WIN-R
HOT5
HOT13
HOT7
HOT3
K151
(KC-R)
Q
TAB
A
ESC
Z
N-CHG
‘(~)
1( ! )
W
CAP
S
K45
X
CHG
F1
2 (@)
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
CTRL-R WAKE UP
23
eKK8301
Keyboard Encoder
13 PAD Diagram
24 •
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
eKK8301
Keyboard Encoder
Pad No.
Symbol
X
Y
1
GND
-16.5
760.0
2
OSCO
-131.5
760.0
3
DATAIO
-246.5
760.0
4
CLKIO
-366.5
760.0
5
P90
-635.0
717.8
6
P91
-635.0
607.8
7
P92
-635.0
497.8
8
P93
-635.0
387.8
9
P94
-635.0
277.8
10
P95
-635.0
167.8
11
P50
-635.0
57.8
12
P51
-635.0
-52.2
13
P52
-635.0
-162.2
14
P53
-635.0
-272.2
15
P54
-635.0
-382.2
16
P55
-599.0
-760.0
17
P56
-489.0
-760.0
18
P57
-379.0
-760.0
19
P80
-269.0
-760.0
20
P81
-159.0
-760.0
21
P82
-49.0
-760.0
22
P83
61.0
-760.0
23
P84
171.0
-760.0
24
P85
281.0
-760.0
25
P86
391.0
-760.0
26
P87
501.0
-760.0
27
P60
635.0
-500.5
28
P61
635.0
-390.5
29
P62
635.0
-280.5
30
P63
635.0
-170.5
31
P64
635.0
-60.5
32
P65
635.0
49.5
33
P66
635.0
159.5
34
P67
635.0
269.5
35
P72
635.0
379.5
36
P71
635.0
489.5
37
P70
635.0
599.5
38
VDD
220.5
760.0
39
OSCI
105.5
760.0
Chip Size : 1510 * 1760 um
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)
25
eKK8301
Keyboard Encoder
26 •
Product Specification (V1.0) 08.07.2002
(This specification is subject to change without further notice)