參數(shù)資料
型號: SAB-C504-L40M
廠商: SIEMENS A G
元件分類: 微控制器/微處理器
英文描述: 8-Bit CMOS Microcontroller
中文描述: 8-BIT, 40 MHz, MICROCONTROLLER, PQFP44
文件頁數(shù): 42/49頁
文件大小: 962K
代理商: SAB-C504-L40M
C504
Semiconductor Group
42
AC Characteristics for C504-L24 / C504-2R24
(cont’d)
External Data Memory Characteristics
External Clock Drive
Parameter
Symbol
Limit Values
Unit
24-MHz clock
Variable Clock
1/
t
CLCL
= 3.5 MHz to
24 MHz
min.
180
max.
min.
6
t
CLCL
– 70
6
t
CLCL
– 70
2
t
CLCL
– 27
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
ns
WR pulse width
180
ns
Address hold after ALE
56
5
t
CLCL
– 90
2
t
CLCL
– 20
8
t
CLCL
– 133 ns
9
t
CLCL
– 155 ns
3
t
CLCL
+ 50
t
CLCL
+ 25
ns
RD to valid data in
118
ns
Data hold after RD
0
0
ns
Data float after RD
63
ns
ALE to valid data in
200
Address to valid data in
220
3
t
CLCL
– 50
4
t
CLCL
– 97
t
CLCL
– 25
t
CLCL
– 37
7
t
CLCL
– 122 –
t
CLCL
– 27
ALE to WR or RD
75
175
ns
Address valid to WR
67
ns
WR or RD high to ALE high
17
67
ns
Data valid to WR transition
5
ns
Data setup before WR
170
ns
Data hold after WR
15
ns
Address float after RD
0
0
ns
Parameter
Symbol
Limit Values
Unit
Variable Clock
Freq. = 3.5 MHz to 24 MHz
min.
max.
Oscillator period
t
CLCL
t
CHCX
t
CLCX
t
CLCH
t
CHCL
41.7
294
t
CLCL
t
CLCX
t
CLCL
t
CHCX
12
ns
High time
12
ns
Low time
12
ns
Rise time
ns
Fall time
12
ns
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