參數(shù)資料
型號(hào)： HT82K28
廠商： Holtek Semiconductor Inc.
英文描述： Win98 Keyboard Encoder
中文描述： Win98鍵盤(pán)編碼器
文件頁(yè)數(shù)： 2/20頁(yè)
文件大?。?/td> 143K
代理商： HT82K28
Pin Description
Pin No.
Pin Name
I/O
Description
1
OSC1
I
System clock input
2, 4
VSS
Negative power supply, ground
3
VDD
Positive power supply
5, 6
IO0~IO1
O
Customer defined optional output lines
39, 40,
7~12
C0~C7
I
Keyboard matrix scanning input pins
16~23, 28,
29, 13~15
24, 26, 27
33, 35
R0~R18
O
Keyboard matrix scanning output pins
25, 34
NC
No connection
30
SCRL
O
LED pin
31
NUM
O
LED pin
32
CAP
O
LED pin
37
CLOCK
I/O
Synchronous clock signal. Used to clock the transmission data
38
DATA
I/O
Bidirectional data transmission line
Absolute Maximum Ratings
Supply Voltage............................4.75V to 5.25V
Input Voltage.................V
SS
0.3V to V
DD
+0.3V
Storage Temperature................. 55 C to 125 C
Operating Temperature ..................0 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.
HT82K28A
2
February 16, 2000
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