參數(shù)資料
型號(hào)： HT82K628A
廠商： Holtek Semiconductor Inc.
英文描述： Windows 2000 Keyboard Encoder(Windows 2000操作系統(tǒng)鍵盤編碼器)
中文描述： Windows 2000的鍵盤編碼器（Windows 2000的操作系統(tǒng)鍵盤編碼器）
文件頁(yè)數(shù)： 3/25頁(yè)
文件大?。?/td> 174K
代理商： HT82K628A
Pin No.
Pin Name
I/O
Description
31
RESET
I
Chip reset input. Active low. Built-in power-on reset
circuit to reset the entire chip. Chip can also be exter-
nally reset via RESET pin.
32
VDD
5.0V positive power supply
33
OSC1
I
System clock input; 110k
OSC
resistor connected for RC
34
NC
No connection
Absolute Maximum Ratings
Supply Voltage ............................. 0.3V to 5.5V
Storage Temperature ................ 50 C to 125 C
Input Voltage ................V
SS
0
.
3V to V
DD
+0.3V
Operating Temperature ............. 25 C to 70 C
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maxi-
mumRatings maycausesubstantialdamagetothedevice.Functionaloperationofthisdevice
at other conditions beyond those listed in the specification is not implied and prolonged expo-
sure to extreme conditions may affect device reliability.
Electrical Characteristics
Ta=25 C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max. Unit
V
DD
Conditions
V
DD
Operating Voltage
4
5
5.5
V
I
DD
Operating Current
(RC OSC)
5V
No load, f
SYS
= 2MHz
2
5
mA
V
IL
V
IH
I
OL
I
OH
Input Low Voltage
5V
0
1.5
V
Input High Voltage
5V
3.5
5
V
Sink Current
5V
V
OL
= 0.5V
V
OH
= 4.5V
7
12
mA
Source Current
5V
2.5
4.5
mA
I
LED
LED Sink Current
(Scroll, Num, Caps)
5V
V
OL
=3.2V
10
14
18
mA
R
ph
Internal Pull-high
Resistance
(C0~C7, R0~R19)
5V
5
12
20
k
R
ph1
Internal Pull-high
Resistance
(DATA, CLOCK)
5V
2
4.7
8
k
R
ph2
Internal Pull-high
Resistance (RESET)
5V
25
50
75
k
f
SYS
System Clock (RC OSC)
5V
2
MHz
HT82K628A
3
December 8, 2000
相關(guān)PDF資料
PDF描述
HT82K628 Windows 2000 Keyboard Encoder
HT82K629A Windows 2000 USB+PS/2 Keyboard Encoder
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