- 您現在的位置：買賣IC網 > PDF目錄363903 > W83C45 (WINBOND ELECTRONICS CORP) Keyboard Controller(鍵盤控制器) PDF資料下載
參數資料
| 型號： | W83C45 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | Keyboard Controller(鍵盤控制器) |
| 中文描述： | 鍵盤控制器（鍵盤控制器） |
| 文件頁數： | 6/21頁 |
| 文件大小： | 245K |
| 代理商： | W83C45 |
W83C45
Publication Release Date: November 1996
Preliminary Revision 0.9
- 6 -
4.0 ELECTRICAL CHARACTERISTICS
(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
0.8
V
V
IH
Input High Voltage
3.5
V
V
OH
Output High Voltage
4
V
I
OH
= - 8 mA
V
OL
Output Low Voltage
0.4
V
I
OH
= - 16 mA
R
IP
Min. I/P Resist
10K
μ
A
μ
A
μ
A
I
OL
= 8 mA
I
OFL
O/P Leakage Current
-10
10
I
IH
I/P Leakage Current
-10
10
I
IL
I/P Leakage Current (Except P10, P11,
P12, P13, P14, P15, P16, P17)
-10
10
V
DD
= 5.5V,
V
IN
= V
DD
I
IL1
I/P Leakage Current (P10, P11, P12,
P13, 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
V
DD
= 5.5V,
V
IN
= V
SS
5.0 OUTPUT BUFFER
The output buffer is an 8-bit read-only register at I/O address hex 60. The keyboard controller uses
the output buffer to send the scan code received from the keyboard and data bytes required by
commands to the system. The output buffer should be read only when the output buffer full bit in the
register is 1.
6.0 INPUT BUFFER
The input buffer is an 8-bit write-only register at I/O address hex 60 or 64. Writing to address hex 60
sets a flag that indicates a data write; writing to address hex 64 sets a flag that indicates a command
write. Data written to I/O address hex 60 are sent to the keyboard (unless the keyboard controller is
expecting a data byte) following the controller's input buffer only if the input buffer full bit in the status
register is set to 0.
相關PDF資料 |
PDF描述 |
|---|---|
| W83C553F | SYSTEM I/O CONTROLLER WITH PCI ARBITER |
| W83L177R | 100MHZ 2-DIMM SDRAM BUFFER FOR NOTEBOOK |
| W83L518D | Integrated Media Reader |
| W83L784AR | WINBOND H/W MONITORING IC |
| W83L784 | Monitoring IC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W83C45P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Keyboard Controller |
| W83C553F | 制造商:WINBOND 制造商全稱:Winbond 功能描述:SYSTEM I/O CONTROLLER WITH PCI ARBITER |
| W83C553FG | 制造商:Winbond Electronics Corp 功能描述: |
| W83C553F-G | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:W83C553F-G Highly Integrated System I/O Controller for Power PCTM (South Bridge) QFP 208 |
| W83C553FY-G | 制造商:Nuvoton Technology Corp 功能描述:I/O Controller Phase Controller 208-Pin PQFP 制造商:Winbond Electronics 功能描述:I/O CONTROLLER 制造商:Nuvoton Technology 功能描述:I/O Controller Phase Controller 208-Pin PQFP |
發布緊急采購，3分鐘左右您將得到回復。