參數(shù)資料
型號: SAB-C504-2R40M
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, MROM, 40 MHz, MICROCONTROLLER, PQFP44
文件頁數(shù): 40/49頁
文件大小: 962K
代理商: SAB-C504-2R40M
C504
Semiconductor Group
40
AC Characteristics for C504-L / C504-2R
(cont’d)
External Data Memory Characteristics
External Clock Drive
Parameter
Symbol
Limit Values
Unit
12-MHz clock
Variable Clock
1/
t
CLCL
= 3.5 MHz to
12 MHz
min.
400
max.
min.
6
t
CLCL
– 100 –
6
t
CLCL
– 100 –
2
t
CLCL
– 53
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
400
ns
Address hold after ALE
114
5
t
CLCL
– 165 ns
2
t
CLCL
– 70
8
t
CLCL
– 150 ns
9
t
CLCL
– 165 ns
3
t
CLCL
+ 50
ns
RD to valid data in
252
Data hold after RD
0
0
ns
Data float after RD
97
ns
ALE to valid data in
517
Address to valid data in
585
3
t
CLCL
– 50
4
t
CLCL
– 130 –
t
CLCL
– 40
t
CLCL
– 50
7
t
CLCL
– 150 –
t
CLCL
– 50
ALE to WR or RD
200
300
ns
Address valid to WR or RD
203
ns
WR or RD high to ALE high
43
123
t
CLCL
+ 40
ns
Data valid to WR transition
33
ns
Data setup before WR
433
ns
Data hold after WR
33
ns
Address float after RD
0
0
ns
Parameter
Symbol
Limit Values
Unit
Variable Clock
Freq. = 3.5 MHz to 12 MHz
min.
max.
Oscillator period
t
CLCL
t
CHCX
t
CLCX
t
CLCH
t
CHCL
83.3
294
t
CLCL
t
CLCX
t
CLCL
t
CHCX
20
ns
High time
20
ns
Low time
20
ns
Rise time
ns
Fall time
20
ns
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