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SC83053 の電気的特性と機能

SC83053のメーカーはSilan Microelectronicsです、この部品の機能は「KEYBOARD ENCODER」です。


製品の詳細 ( Datasheet PDF )

部品番号 SC83053
部品説明 KEYBOARD ENCODER
メーカ Silan Microelectronics
ロゴ Silan Microelectronics ロゴ 




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SC83053 Datasheet, SC83053 PDF,ピン配置, 機能
Silan
Semiconductors
SC83053
KEYBOARD ENCODER
DESCRIPTION
The SC83053 is dedicated to a keyboard encoder, specially
designed for IBM PC AT and all compatible machines. The
SC83053 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.
FEATURES
4 32
5
6
7
8
9
1 39
38
37
36
35
34
33
32
10 31
11 30
12 29
13 28
14 27
15
16 17 18 19 20 21 22 23 24 25 26
• Low cost - eliminate need external components.
• Phantom key detects.
Chip Topography
• 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 WINDOWSTM 95, 98, 2000 keys.
• 104/107 keys with multi-media or other special application
keyboard encoder.
• WINDOWS is registered trademarks of Microsoft corperation.
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.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2001.11.8.
1

1 Page





SC83053 pdf, ピン配列
Silan
Semiconductors
DC ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Test condition
Operating Voltage
VCC
Operating Supply Current
ICC1 FOSC=1.8432MHz
Input Leakage
IIN VIN=VCC, VSS
Input High Voltage
VIH
Input Low Voltage
VIL
Output Low Voltage
VOL1 IOL1=3.0mA
Output Low Voltage for LEDS
VOL2 IOL2=10mA
Internal Pull-high Resistance (port 6,9) RPH1 VPH1=0V
Internal Pull-high Resistance for
RPH2 VPH2=0V
DATA, CLK
Output Low Voltage for DATA CLK
VOL3 IOL3=5mA
SC83053
Min.
4.5
2.0
12
Typ.
5
Max.
5.5
3
±1
0.8
0.4
3.2
23
Unit
V
mA
µA
V
V
V
V
K
1.5 2.2
3 K
0.4 V
AC ELECTRICAL CHARACTERISTICS
Parameter
Time from DATA transition to falling edge of CLK
Time from rising edge of CLK to DATA transition
Duration of CLK inactive
Duration of CLK active
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
Symbol
T1
T2
T3
T4
T5
T6
FCLK
Min.
5
5
30
30
Typ.
40
40
Max.
25
T4-5
50
50
Unit
µs
µs
µs
µs
50 µs
5 25 µs
1.8432
MHz
PIN DESCRIPTION
Pin no. Symbol
11 P50
12 P51
I/O
O
O
Function
Column 3 low output scan line, 3-state
Column 4 low output scan line, 3-state
(To be continued)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2001.11.8.
3


3Pages


SC83053 電子部品, 半導体
Silan
Semiconductors
SC83053
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
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2001.11.8.
6

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
SC83053

KEYBOARD ENCODER

Silan Microelectronics
Silan Microelectronics


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