|
|
PDF EC3648 Data sheet ( Hoja de datos )
| Número de pieza | EC3648 | |
| Descripción | PS2 KEYBOARD CONTROLLER | |
| Fabricantes | E-Cmos | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de EC3648 (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
PS2 KEYBOARD CONTROLLER
FEATURE
zLow cost - eliminate need external components.
zPhantom key detects.
zSupport scan code set 1 ,2 and 3.
zSupport PC AT and PS/2 keyboard .
zLow power CMOS device technology.
zInternal pull-up resistor.
zTri-state outputs for easy board application.
zBuilt-in 8-bit’s CPU.
z5K bytes of ROM.
z128 bytes of RAM.
zSupport WINDOWS TM 95, 98, 2000, ME, XP keys.
zNormal operation frequency is 4 MHz.
zBuilt-in RC type oscillator with external resister
zOn chip general 8 bit preload timer
EC3648
Preliminary
DESCRIPTION
The EC3648 is a single chip CMOS micro-controller for keyboard application,
specially for IBM PC AT and all compatible machines. It incorporate a 8-bit’s CPU
core, 5K bytes of ROM, and 128 bytes of RAM used as working RAM and stack area.
The EC3648 control all scan codes, 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.
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.
Page 1 of 21
Rev 01
1 page  
PS2 KEYBOARD CONTROLLER
EC3648
Preliminary
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
3. default rate = 10.9 chars/sec ± 20%
Default delay = 500 mS ± 20%
11111
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
Enable (Hex F4)
- Responds with ACK.
- Clears output buffer.
- Clears last typematic key.
- Start scanning.
Default Disable ( Hex F5)
- Responds with ACK.
- Reset 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.
- Clear output buffer.
- Set all key type (affect only code set 3 operation).
F7 : Typematic
F8 : Make/Break
F9 : Make
FA : Typematic/Make/Break
- Returns to previous scanning rate.
Page 5 of 21
Rev 01
5 Page 
Key Number
And Symbol
PS2 KEYBOARD CONTROLLER
EC3648
Preliminary
scan code set 2
Make/Break code
Key Number
and Symbol
Make/Break code
1
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
40
41
**42
~`
!1
@2
#3
$4
%5
^6
&7
*8
(9
)0
_-
+=
Back Space
Tab
Q
W
E
R
T
Y
U
I
O
P
{[
}]
|\
Caps Lock
A
S
D
F
G
H
J
K
L
:;
“‘
|\
0E/F0 0E
16/F0 16
1E/F0 1E
26/F0 26
25/F0 25
2E/F0 2E
36/F0 36
3D/F0 3D
3E/F0 3E
46/F0 46
45/F0 45
4E/F0 4E
55/F0 55
6A/F0 6A
66/F0 66
0D/F0 0D
15/F0 15
1D/F0 1D
24/F0 24
2D/F0 2D
2C/F0 2C
35/F0 35
3C/F0 3C
43/F0 43
44/F0 44
4D/F0 4D
54/F0 54
5B/F0 5B
5D/F0 5D
58/F0 58
1C/F0 1C
1B/F0 1B
23/F0 23
2B/F0 2B
34/F0 34
33/F0 33
3B/F0 3B
42/F0 42
4B/F0 4B
4C/F0 4C
52/F0 52
5D/F0 5D
47 X
48 C
49 V
50 B
51 N
52 M
53 <
,
54 >
.
55 ?
/
57 Shift(R)
58 Ctrl(L)
60 Alt(L)
61 Space
62 Alt(R)
64 Ctrl(R)
90 Num Lock
91 7 Home
92 4
93 1
←
End
96 8
↑
97 5
98 2
99 0
↓
Ins
100 *
101 9 PgUp
102 6
→
103 3 PgDn
104 . Del
105 -
106 +
107
108 Enter
110 ESC
112 F1
113 F2
114 F3
115 F4
116 F5
117 F6
118 F7
119 F8
120 F9
Page 11 of 21
22/F0 22
21/F0 21
2A/F0 2A
32/F0 32
31/F0 31
3A/F0 3A
41/F0 41
49/F0 49
4A/F0 4A
59/F0 59
14/F0 14
11/F0 11
29/F0 29
E0 11/E0 F0 11
E0 14/E0 F0 14
77/F0 77
6C/F0 6C
6B/F0 6B
69/F0 69
75/F0 75
73/F0 73
72/F0 72
70/F0 70
7C/F0 7C
7D/F0 7D
74/F0 74
7A/F0 7A
71/F0 71
7B/F0 7B
79/F0 79
6D/F0 6D
E0 5A/E0 F0 5A
76/F0 76
05/F0 05
06/F0 06
04/F0 04
0C/F0 0C
03/F0 03
0B/F0 0B
83/F0 83
0A/F0 0A
01/F0 01
Rev 01
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet EC3648.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| EC3648 | PS2 KEYBOARD CONTROLLER | E-Cmos |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |