參數(shù)資料
型號: C517
廠商: INFINEON TECHNOLOGIES AG
元件分類: 8位微控制器
英文描述: 8-bit CMOS MICROCONTROLLER
中文描述: 8位CMOS單片機(jī)
文件頁數(shù): 61/72頁
文件大小: 845K
代理商: C517
Semiconductor Group
59
C517A
AC Characteristics (18 MHz, cont’d)
External Data Memory Characteristics
External Clock Drive Characteristics
Parameter
Symbol
Limit Values
Unit
18 MHz
Clock
Variable Clock
1/
t
CLCL
= 3.5 MHz to 18 MHz
min.
6
t
CLCL
– 100
6
t
CLCL
– 100
2
t
CLCL
– 30
min.
max.
max.
RD pulse width
t
RLRH
t
WLWH
t
LLAX2
t
RLDV
t
RHDX
t
RHDZ
t
LLDV
t
AVDV
t
LLWL
t
AVWL
t
WHLH
t
QVWX
t
QVWH
t
WHQX
t
RLAZ
233
ns
WR pulse width
233
ns
Address hold after ALE
81
5
t
CLCL
– 150
2
t
CLCL
– 60
8
t
CLCL
– 150
9
t
CLCL
– 165
3
t
CLCL
+ 50
t
CLCL
+ 40
ns
RD to valid data in
128
ns
Data hold after RD
0
0
ns
Data float after RD
51
ns
ALE to valid data in
294
ns
Address to valid data in
335
3
t
CLCL
– 50
4
t
CLCL
– 130
t
CLCL
– 40
t
CLCL
– 45
7
t
CLCL
– 150
t
CLCL
– 40
ns
ALE to WR or RD
117
217
ns
Address valid to WR or RD
92
ns
WR or RD high to ALE high
16
96
ns
Data valid to WR transition
11
ns
Data setup before WR
239
ns
Data hold after WR
16
ns
Address float after RD
0
0
ns
Parameter
Symbol
Limit Values
Unit
Variable Clock
Freq. = 3.5 MHz to 18 MHz
min.
max.
Oscillator period
t
CLCL
t
CHCX
t
CLCX
t
CLCH
t
CHCL
55.6
285.7
t
CLCL
t
CLCX
t
CLCL
t
CHCX
15
ns
High time
15
ns
Low time
15
ns
Rise time
ns
Fall time
15
ns
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