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參數(shù)資料
| 型號： | W83C43 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Keyboard Controller(鍵盤控制器) |
| 中文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PDIP40 |
| 封裝： | DIP-40 |
| 文件頁數(shù)： | 6/21頁 |
| 文件大小： | 240K |
| 代理商： | W83C43 |
W83C43
- 6 -
ELECTRICAL CHARACTERISTICS & CAPACITANCE
(Ta = 0
°
C to + 70
°
C, V
DD
= +5V
±
5%)
SYMBOL
DESCRIPTION
MIN.
TYP.
MAX.
UNIT
NOTE
V
DD
Power Supply
4.75
5.0
5.25
V
V
IL
Input Low Voltage (except RESET, T0,
T1)
0.8
V
V
IL1
Input Low Voltage (RESET, T0, T1)
0.6
V
V
IH1
Input High Voltage (except RESET, T0,
T1, P10, P11)
2.0
V
V
IH2
Input High Voltage (P10, P11)
3.0
V
V
IH3
Input High Voltage (T0, T1, RESET)
3.5
V
V
OH1
Output High Voltage (P10
P13, P20
P27)
2.4
V
I
OH
= -2
mA
V
OH2
Output High Voltage (D0
D7)
2.4
V
I
OH
= -4
mA
V
OL1
Output Low Voltage (P10
P13, P20
P27)
0.4
V
I
OL
= 2 mA
V
OL2
Output Low Voltage (D0
D7)
Min. I/P Resist
0.4
V
I
OL
= 4 mA
R
IP
10K
μ
A
I
OFL
O/P Leakage Current (D0
D7, High Z
State)
-10
10
I
IH
I/P Leakage Current
-10
10
μ
A
V
DD
= 5.5V,
V
IN
= V
DD
I
IL
I/P Leakage Current (Except P10, P11,
P14, P15, P16, P17)
-10
10
μ
A
V
DD
= 5.5V,
V
IN
= V
SS
I
IL1
I/P Leakage Current (P10, P11, P14,
P15, P16, P17)
-10
550
μ
A
V
DD
= 5.5V,
V
IN
= V
SS
C
L
O/P Load Capacity
15
50
pF
STATUS REGISTER (AT MODE)
The status register is an 8-bit read-only register at I/O address hex 64 that holds information about the
status of the keyboard controller and interface. It may be read at any time.
BIT
BIT FUNCTION
DESCRIPTION
0
Output Buffer Full
0: Output buffer empty
1: Output buffer full
1
Input Buffer Full
0: Input buffer empty
1: Input buffer full
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