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PDF EM83053DH Data sheet ( Hoja de datos )
| Número de pieza | EM83053DH | |
| Descripción | KEYBOARD ENCODER | |
| Fabricantes | ELAN Microelectronics | |
| Logotipo |  |
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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.
3,28, 2003 11
1 page  
EM83053DH
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.
bit 4~ bit 0
Typematic rate
±20%
bit 4~ bit 0
00000 30.0 10000
00001 26.7 10001
00010 24.0 10010
00011 21.8 10011
00100 20.0 10100
00101 18.5 10101
00110 17.1 10110
00111 16.0 10111
01000 15.0 11000
01001 13.3 11001
01010 12.0 11010
01011 10.9 11011
01100 10.0 11100
01101 9.2 11101
01110 8.6 11110
01111 8.0 11111
*This specification are subject to be changed without notice.
typematic rate
±20%
7.5
6.7
6.0
5.5
5.0
4.6
4.3
4.0
3.7
3.3
3.0
2.7
2.5
2.3
2.1
2.0
3,28, 2003 55
5 Page 
EM83053DH
KEYBOARD ENCODER
@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
`(~) OE
1 16
2 1E
3 26
4 25
5 2E
6 36
7 3D
8 3E
9 46
0
-(-)
=(+)
BACK SPACE
45
4E
55
66
TAB
Q
W
0D
15
1D
E 24
R 2D
T 2C
Y 35
Break code
F0 OE
F0 16
F0 1E
F0 26
F0 25
F0 2E
F0 36
F0 3D
F0 3E
F0 46
F0 45
F0 4E
F0 55
F0 66
F0 0D
F0 15
F0 1D
F0 24
F0 2D
F0 2C
F0 35
Key
X
C
V
B
N
M
,(<)
.(>)
/(?)
SHIFT_R
CTRL_L
ALT_L
SPACE
ALT_R
CTRL_R
NUM
(7)
(4)
(1)
(8)
(5)
Make code
22
21
2A
32
31
3A
41
49
4A
59
14
11
29
E0 11
E0 14
77
6C
6B
69
75
73
Break code
F0 22
F0 21
F0 2A
F0 32
F0 31
F0 3A
F0 41
F0 49
F0 4A
F0 59
F0 14
F0 11
F0 29
E0 F0 11
E0 F0 14
F0 77
F0 6C
F0 6B
F0 69
F0 75
F0 73
*This specification are subject to be changed without notice.
3,28, 2003 1111
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet EM83053DH.PDF ] | |
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