Data Sheet

EM83053DH
KEYBOARD ENCODER
GENERAL DESCRIPTION
The EM83053DH microcontroller is dedicated to a keyboard encoder ,specially designed for
IBM PC AT and all compatible machines. The EM83053DH controll 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.
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.
APPLICATION
• 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.
PIN ASSIGNMENTS
*This specification are subject to be changed without notice.
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PIN DESCRIPTIONS
Symbol
I/O
Function
P50
P51
O
O
Column 3 Low output scan line, 3-state
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
I
Ground
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 ( 17ΚΩ... )
P61
I
Row 1 Input scan line, internal pull high ( 17ΚΩ... )
P62
I
Row 2 Input scan line, internal pull high ( 17ΚΩ... )
P63
I
Row 3 Input scan line, internal pull high ( 17ΚΩ... )
P64
I
Row 4 Input scan line, internal pull high ( 17ΚΩ... )
P65
I
Row 5 Input scan line, internal pull high ( 17ΚΩ... )
P66
I
Row 6 Input scan line, internal pull high ( 17ΚΩ... )
P67
I
Row 7 Input scan line, internal pull high ( 17ΚΩ... )
CLK
I/O
CLOCK line for IBM communication , internal pull high ( 2.2ΚΩ... )
DATA
I/O
DATA line for IBM communication , internal pull high ( 2.2ΚΩ... )
V DD
I
+5V Power Supply
OSCO
O
CLOCK output
R_OSCI
I
Connect 51K OHM resistor for 1.8432 MHz oscillation
*This specification are subject to be changed without notice.
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FUNCTION DESCRIPTIONS
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.
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.
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.
Keyboard data input
When the system is ready to send data to the keyboard, it 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.
*This specification are subject to be changed without notice.
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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.
*This specification are subject to be changed without notice.
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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.
bit 4~ bit 0
Typematic rate
±20%
bit 4~ bit 0
typematic rate
±20%
00000
00001
30.0
26.7
10000
10001
7.5
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
*This specification are subject to be changed without notice.
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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).
F7 : Typematic
F8 : Make/Break
F9 : Make
FA : Typematic/Make/Break
- Returns to previous scanning rate.
*This specification are subject to be changed without notice.
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Set Key Type ( Hex FB,FC,FD )
- Responds ACK.
- Clears output buffer.
- Receives key ID byte
- Responds ACK.
- Sets 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.
Command to the system
The following are the keyboard output commands.
Acknowledge ( Hex FA )
The keyboard sends an 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 83AB )
The 2 byte ID is issued to respond to READ ID command. The low byte is sent first, followed by the
high byte.
*This specification are subject to be changed without notice.
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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.
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.
The following table shows three scan code sets used in the keyboard.
scan code set 1
Key
Make code
Break code
Key
Make code
Break code
`(~)
1
29
02
A9
82
X
C
2D
2E
AD
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
*This specification are subject to be changed without notice.
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Key
Make code
Break code
Key
Make code
Break code
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
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
*This specification are subject to be changed without notice.
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Base Case,or
Key
Shift + Nun
Shift Case @3
Num Lock
Lock
Make/Break
Make/Break
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
E0 51 / E0 D1
E0 AA E0 51 / E0 D1 E0 2A
E0 2A E0 51 / E0 D1 E0 AA
DOWN
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
(/)
E0 35 / E0 B5
Shift Case
Make/Break @3
E0 AA E0 35 / E0 B5 E0 2A
Key
Scan Code Make/Break
PRINT
E0 2A E0 37 / E0 B7 E0 AA
Ctrl Case, Shift Case
Alt Case
Make/ Break
Make/Break
E0 37 / E0 B7
54 / D4
Key
Make Code
Ctrl Key Pressed
PAUSE @4
E1 1D 45 E1 9D C5
E0 46 E0 C6
Key
BASE Make Code
Num Lock Make Code
€ @5
38 52 D2 4F CF 50 D0 48 C8 45 C5 38 52 D2 4F CF 50 D0
B8
48 C8 B8 45 C5
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.
*This specification are subject to be changed without notice.
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@4 : This key is not typematic. All associated scan codes occur on the make of the key.
@5 : This Key is Make only. When the Num Lock is off, the encoder will send the code which is
the same as depressing Alt+0+1+2+8. When the Num Lock is on, the encoder will send the
code which is the same as depressing Num+Alt+0+1+2+8+Num, and user wll see the Num
Lock LED flash one time.
scan code set 2
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
*This specification are subject to be changed without notice.
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Key
Make code
Break code
Key
Make code
Break code
U
3C
F0 3C
(2)
72
F0 72
I
43
F0 43
(0)
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
\(¦)@7
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
L
4B
F0 4B
F6
0B
F0 0B
;(:)
4C
F0 4C
F7
83
F0 83
'(")
52
F0 52
F8
0A
F0 0A
K42 @8
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 @8
61
F0 61
F12
07
F0 07
Z
1A
F0 1A
SCROLL
7E
F0 7E
Key
INS
Base Case,or Shift + Nun Lock
Shift Case @9
Num Lock
Make/Break
Make/Break
Make/Break
E0 70 / E0 F0 70
E0 F0 12 E0 70
E0 12 E0 70
/ E0 F0 70 E0 12
DEL
LEFT
E0 71 / E0 F0 71
E0 6B / E0 F0 6B
*This specification are subject to be changed without notice.
/ 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
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Key
Base Case,or Shift + Nun Lock
Shift Case @9
Num Lock
Make/Break
Make/Break
Make/Break
E0 6C / E0 F0 6C
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
HOME
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
E0 7A / E0 F0 7A
DOWN
RIGHT
E0 74 / E0 F0 74
Key
Scan Code Make/Break
Shift Case Make/Break @9
(/)
E0 4A / E0 F0 4A
E0 F0 12 E0 4A/E0 F0 4A E0 12
Key
Scan Code Make/Break
PRINT
E0 12 E0 7C / E0 F0 7C E0 F0 12
Ctrl Case, Shift Case
Alt Case
Make/ Break
Make/Break
E0 7C /E0 F0 7C
84/ F0 84
Key
Make Code
Ctrl Key Pressed
PAUSE @10
E1 14 77 E1 F0 14 F0 77
E0 7E E0 F0 7E
Key
BASE Make Code
Num Lock Make Code
€ @11
11 70 F0 70 69 F0 69 72 F0 77 F0 77 11 70 F0 70 69 F0
72 75 F0 75 F0 11
69 72 F0 72 75 F0 75 F0 11
77 F0 77
*This specification are subject to be changed without notice.
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Note .
@7 : 101-key keyboard only.
@8 : 102-key keyboard only.
@9 : 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.
@10 : This key is not typematic. All associated scan codes occur on the make of the key.
@11 : This Key is Make only. When the Num Lock is off, the encoder will send the code which is
the same as depressing Alt+0+1+2+8. When the Num Lock is on, the encoder will send the
code which is the same as depressing Num+Alt+0+1+2+8+Num, and user will see the Num
Lock LED flash one time.
scan code set 3
Key
Make code
Break code
Default Key State
`(~)
1
OE
16
F0 OE
F0 16
Typematic
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
*This specification are subject to be changed without notice.
3,28, 2003
1144
EM83053DH
KEYBOARD ENCODER
Key
Make code
Break code
Default Key State
T
Y
2C
35
F0 2C
F0 35
Typematic
Typematic
U
3C
F0
3C
Typematic
I
43
F0
43
Typematic
O
44
F0
44
Typematic
P
4D
F0
4D
Typematic
[({}
54
F0
54
Typematic
]())
5B
F0
5B
Typematic
\(¦)@13
5C
F0
5C
Typematic
CAPS
14
F0
14
Make/Break
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 @14
53
F0
53
Typematic
ENTER
5A
F0
5A
Typematic
SHIFT_L
12
F0
12
Make/Break
K45 @14
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
*This specification are subject to be changed without notice.
3,28, 2003
1155
EM83053DH
KEYBOARD ENCODER
Key
Make code
CTRL L
ALT_L
11
19
F0
F0
11
19
Make/Break
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
(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
(0)
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
*This specification are subject to be changed without notice.
Break code
Default Key State
3,28, 2003
1166
EM83053DH
KEYBOARD ENCODER
Key
Make code
Break code
Default Key State
F4
F5
1F
27
F0 1F
F0 27
Make only
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
Key
BASE Make Code
Num Lock Make Code
Euro
X
X
Note .
@13 : 101-key keyboard only
@14 : 102-key keyboard only
*This specification are subject to be changed without notice.
3,28, 2003
1177
EM83053DH
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 codes for scan set 2:
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
*This specification are subject to be changed without notice.
3,28, 2003
1188
EM83053DH
KEYBOARD ENCODER
New key codes for scan set 3:
New key
Make
Break
LWIN
RWIN
8B
8C
F0
F0
8B
8C
MAKE/BREAK
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
Windows 2000 Multi-Media key Code.
SET1
K130 : WWW Back
K131 : WWWForward
K132 : WWWstop
K133 : WWWRefresh
K134 : WWWSearch
K135 : WWWFavorites
K136 : WWWWeb/Home
K137 : Mail
K138 : Mute
K139 : VolumeK140 : Volume+
K141 : Play/Pause
K142 : Stop
K143 : PreTrack
K144 : Nexttrack
K145 : Media Select
K146 : MyComputer
K147 : Calculator
SET2
MAKE
BREAK MAKE
BREAK
E06A
E069
E068
E067
E065
E066
E032
E06C
E020
E02E
E030
E022
E024
E010
E019
E06D
E06B
E021
E0EA
E0E9
E0E8
E0E7
E0E5
E0E6
E0B2
E0EC
E0A0
E0AE
E0B0
E0A2
E0A4
E090
E099
E0ED
E0EB
E0A1
E0F038
E0F030
E0F028
E0F020
E0F010
E0F018
E0F03A
E0F048
E0F023
E0F021
E0F032
E0F034
E0F03B
E0F015
E0F04D
E0F050
E0F040
E0F02B
*This specification are subject to be changed without notice.
E038
E030
E028
E020
E010
E018
E03A
E048
E023
E021
E032
E034
E03B
E015
E04D
E050
E040
E02B
3,28, 2003
1199
EM83053DH
KEYBOARD ENCODER
Turbo Function:
Fn+
F1
2.1hz
F6
30hz
F2
4.2hz
F7
46hz
F3
7.2hz
F11
key lock
F4
16.3hz
F5
21hz
Internal Function
O.S. Function
Internal-Multikey Function:
Multi-Media Function
Fn+
Pad_2
Volume-
Pad_Enter Web/Home Pad_0
MyComputer
(M/Mode)
Pad_3
Play/Pause
Pad_+
Mail
Calculator
Pad_4
PreTrack
Pad_-
Favorites
Pad_5
Media
Pad_.
Search
Pad_6
NextTrack
Right Arrow Forward
Pad_7
Mute
left Arrow
Pad_8
Volume+
Down Arrow
Pad_9
Stop
Up Arrow Refresh
*This specification are subject to be changed without notice.
Pad_1
E
Eur Key
Back
Stop
3,28, 2003
2200
EM83053DH
KEYBOARD ENCODER
ABSOLUTE MAXIMUM RATINGS
Parameter
Sym.
Ratings
Supply Voltage
V CC
-0.5V to +7V
Input Voltage
V IN
-0.3V to +6V
Output Voltage
V OUT
-0.3V to +6V
Temperature under bias
TB
0
Storage temperature
TS
-65
to 70
to 150
DC ELECTRICAL CHARACTERISTICS
Parameter
Sym. Min. Typ. Max. Unit
Operating voltage
V CC
Operating supply current
4.5
5.5
V
I CCI
3
mA
Fosc=1.8432MHz
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
2.0
Internal Pull-high resistance ( port 6,9 ) R PH1
12
Internal Pull-high resistance for
1.5
R PH2
5
Condition
V
2.2
23 Kohm
V PH1 = 0V
3
Kohm
V PH2 = 0V
0.4
V
I OL3 = 2 mA
DATA, CLK
Output low voltage for DATA CLK
V OL3
AC ELECTRICAL CHARACTERISTICS
Parameter
Sym. Min. Typ. Max. Unit
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
Time to auxiliary device inhibit after clock 11 to ensure
T5
50
µS
25
µS
the auxiliary device does not start another transmission
Time from inactive to active CLK transition, used to time
T6
5
when auxiliary device samples DATA
System clock
*This specification are subject to be changed without notice.
FCLK
1.843
MHz
3,28, 2003
2211
EM83053DH
KEYBOARD ENCODER
TIMING DIAGRAMS
Fig 3. Keyboard output data timings
Fig 4. Keyboard input data timings
*This specification are subject to be changed without notice.
3,28, 2003
2222
EM83053DH
KEYBOARD ENCODER
APPLICATION CIRCUIT
VCC
C1
10uF
VCC
R1
D1
CAPS
51Kohm
D2
NUM
D3
SCROLL
R2
300ohm
Turbo Func.
39
38
R-OSCI
VDD
CLK
DATA
OSCO
VSS
P90
P91
P92
P93
P94
P95
P50
P51
P52
P53
P54
EM78448D
P70
P71
P72
P67
P66
P65
P64
P63
P62
P61
P60
P87
37
36
35
34
33
32
31
30
29
28
27
26
R7
R6
R5
R4
R3
R2
R1
R0
C17
P55
P56
P57
P80
P81
P82
P83
P84
P85
P86
5
6
7
8
9
10
11
12
13
14
15
1
SW2
1
1
SW1
C3
C4
C5
C6
C7
C14
SW3
C13
C12
C11
C15
2
2
2
C1
C2
16
17
18
19
20
21
22
23
24
25
U5
D4
M/Mode LED
4
3
2
1
DATA
CLK
C16
C0
C9
C8
C10
Internal Func. Special Func.
*EM78448D is the body of EM83053D
*This specification are subject to be changed without notice.
3,28, 2003
2233
EM83053DH
KEYBOARD ENCODER
APPLICATION MATRIX
C0
R0,P60,27
R1,P61,28
R2,P62,29
R3,P63,30
R4,P64,31
R5,P65,32
R6,P66,33
R7,P67,34
PAUSE
POWER
€
SLEEP
CTRL-R
WAKE UP
CTRL-L
F5
Q
TAB
A
ESC
Z
N-CHG
`(~)
1(!)
W
CAP
S
K45
X
CHG
F1
2(@)
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 ( '(' )
P
[({)
;(:)
'(")
K42
/(?)
_(-)
0 ( ')' )
Fn
ALT-L
M/Mode
ALT-R
F12
P85,24
C1
P90,5
C2
P91,6
C3
P50,11
C4
P51,12
C5
P52,13
C6
P53,14
C7
P54,15
C8
P83,22
C9
SCROLL
PRINT
P84,23
C10
K14
BACK
\(|)
F11
ENTER
F9
F10
C11
7
4
1
SPACE
NUM
DEL
Power
P80,19
(K)
(K)
(K)
C12
8
5
2
0
/
INS
Sleep
P57,18
(K)
(K)
(K)
(K)
(K)
C13
9
6
3
.
*
-
PAGE
PAGE
P56,17
(K)
(K)
(K)
(K)
(K)
(K)
UP
DOWN
C14
+
K107
ENTER
HOME
END
P55,16
(K)
C15
Wake Up
SHIFT-L
SHIFT-R
Mail
WIN-L
WWWForwar
C17
K150
WWWFavorit
WIN-R
P87,26
(KC-L)
P82,21
Play/Pause
(K)
Volume-
Volume+
NextTrack PrevTrack
Media
P81,20
C16
WWWStop WWWBack WWWRefresh
Mute
WWWSearc
P86,25
MyComputer
*This specification are subject to be changed without notice.
Stop
Calculator Web/Home
K151
(KC-R)
3,28, 2003
2244
EM83053DH
KEYBOARD ENCODER
PAD Diagram
*This specification are subject to be changed without notice.
3,28, 2003
2255
EM83053DH
KEYBOARD ENCODER
Pad No.
Symbol
X
Y
1
GND
-16.5
760.0
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
OSCO
DATAIO
CLKIO
P90
P91
P92
P93
P94
P95
P50
P51
P52
P53
P54
P55
P56
P57
P80
P81
P82
P83
P84
P85
P86
P87
P60
P61
P62
P63
P64
P65
P66
P67
P72
P71
P70
VDD
OSCI
-131.5
-246.5
-366.5
-635.0
-635.0
-635.0
-635.0
-635.0
-635.0
-635.0
-635.0
-635.0
-635.0
-635.0
-599.0
-489.0
-379.0
-269.0
-159.0
-49.0
61.0
171.0
281.0
391.0
501.0
635.0
635.0
635.0
635.0
635.0
635.0
635.0
635.0
635.0
635.0
635.0
220.5
105.5
760.0
760.0
760.0
717.8
607.8
497.8
387.8
277.8
167.8
57.8
-52.2
-162.2
-272.2
-382.2
-760.0
-760.0
-760.0
-760.0
-760.0
-760.0
-760.0
-760.0
-760.0
-760.0
-760.0
-500.5
-390.5
-280.5
-170.5
-60.5
49.5
159.5
269.5
379.5
489.5
599.5
760.0
760.0
Chip size : 1510 * 1760 um
*This specification are subject to be changed without notice.
3,28, 2003
2266