參數(shù)資料
型號: HPC467064EL20
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 微控制器/微處理器
英文描述: High-Performance microController with a 16k UV Erasable CMOS EPROM
中文描述: UVPROM, MICROCONTROLLER, CQCC68
封裝: WINDOWED, LDCC-68
文件頁數(shù): 4/34頁
文件大小: 415K
代理商: HPC467064EL20
20 MHz
AC Electrical Characteristics
(Continued)
(See Notes 1 and 4 andFigures 1 thru5 .) V
CC
e
5V
g
5%
*
, T
A
e b
55
§
C to
a
125
§
C for HPC167064 and V
CC
e
5V
g
10%,
T
A
e
0
§
C to
a
70
§
C for HPC467064 (Continued)
Symbol and Formula
Parameter
Min
Max
Units
Notes
t
DC1ALER
t
DC1ALEF
t
DC2ALER
e
(/4
t
C
a
20
t
DC2ALEF
e
(/4
t
C
a
20
t
LL
e
(/2
t
C
b
9
t
ST
e
(/4
t
C
b
7
t
VP
e
(/4
t
C
b
5
Delay from CKI Rising Edge to ALE Rising Edge
Delay from CKI Rising Edge to ALE Falling Edge
Delay from CK2 Rising Edge to ALE Rising Edge
Delay from CK2 Falling Edge to ALE Falling Edge
ALE Pulse Width
Setup of Address Valid before ALE Falling Edge
Hold of Address Valid after ALE Falling Edge
0
0
35
35
45
45
ns
ns
ns
ns
ns
ns
ns
(Notes 1, 2)
(Notes 1, 2)
41
18
20
t
ARR
e
(/4
t
C
b
5
ALE Falling Edge to RD Falling Edge
20
ns
t
ACC
e
t
C
a
WS
b
55
Data Input Valid after Address Output Valid
145
ns
t
RD
e
(/2
t
C
a
WS
b
65
Data Input Valid after RD Falling Edge
85
ns
t
RW
e
(/2
t
C
a
WS
b
10
RD Pulse Width
140
ns
t
DR
e
*/4
t
C
b
15
Hold of Data Input Valid after RD Rising Edge
0
60
ns
t
RDA
e
t
C
b
15
Bus Enable after RD Rising Edge
85
ns
t
ARW
e
(/2
t
C
b
5
ALE Falling Edge to WR Falling Edge
45
ns
t
WW
e
*/4
t
C
a
WS
b
15
WR Pulse Width
160
ns
t
V
e
(/2
t
C
a
WS
b
5
Data Output Valid before WR Rising Edge
145
ns
t
HW
e
(/4
t
C
b
5
Hold of Data Valid after WR Rising Edge
20
ns
t
DAR
e
(/4
t
C
a
WS
b
50
Falling Edge of ALE to Falling Edge of RDY
75
ns
t
RWR
e
t
C
RDY Pulse Width
100
ns
A
R
W
R
I
4
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