參數(shù)資料
型號: SAB80C517A-N18
廠商: SIEMENS A G
元件分類: 微控制器/微處理器
英文描述: 8-Bit CMOS Single-Chip Microcontroller
中文描述: 8-BIT, 18 MHz, MICROCONTROLLER, PQCC84
文件頁數(shù): 67/77頁
文件大小: 1358K
代理商: SAB80C517A-N18
SAB 80C517A/83C517A-5
Semiconductor Group
66
1994-05-01
AC Characteristics
(cont’d)
Parameter
Symbol
Limit Values
Unit
18 MHz Clock
Variable Clock
1/
t
CLCL
= 3.5 MHz to 18 MHz
min.
max.
min.
max.
External Data Memory Characteristics
RD pulse width
t
RLRH
233
6
t
CLCL
– 100
6
t
CLCL
– 100
2
t
CLCL
– 30
ns
WR pulse width
t
WLWH
233
ns
Address hold after ALE
t
LLAX2
81
ns
RD to valid data in
t
RLDV
128
5
t
CLCL
– 150
ns
Data hold after RD
t
RHDX
0
0
ns
Data float after RD
t
RHDZ
51
2
t
CLCL
– 60
ns
ALE to valid data in
t
LLDV
294
8
t
CLCL
– 150
9
t
CLCL
– 165
ns
Address to valid data in
t
AVDV
335
ns
ALE to WR or RD
t
LLWL
117
217
3
t
CLCL
– 50
3
t
CLCL
+50
ns
WR or RD high to ALE
high
t
WHLH
16
96
t
CLCL
– 40
t
CLCL
+40
ns
Address valid to WR
t
AVWL
92
4
t
CLCL
– 130
t
CLCL
– 45
ns
Data valid to WR
transition
t
QVWX
11
ns
Data setup before WR
t
QVWH
239
7
t
CLCL
– 150
t
CLCL
– 40
ns
Data hold after WR
t
WHQX
16
ns
Address float after RD
t
RLAZ
0
0
ns
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