參數資料
型號: GMS97C54
英文描述: 8-Bit CMOS Microcontroller(8位CMOS 微控制器)
中文描述: 8位CMOS微控制器(8位的CMOS微控制器)
文件頁數: 37/59頁
文件大小: 812K
代理商: GMS97C54
AC characteristics for GMS90 series (24MHz version)
External Data Memory Characteristics
Parameter
Symbol
Limit Values
Unit
24 MHz
Clock
Variable Clock
1/
t
CLCL
= 3.5 MHz to 24 MHz
min.
max.
min.
max.
RD pulse width
t
RLRH
180
-
6
t
CLCL
- 70
-
ns
WR pulse width
t
WLWH
180
-
6
t
CLCL
- 70
-
ns
Address hold after ALE
t
LLAX2
15
-
t
CLCL
- 27
-
ns
RD to valid data in
t
RLDV
-
118
-
5
t
CLCL
- 90
ns
Data hold after RD
t
RHDX
0
-
0
-
ns
Data float after RD
t
RHDZ
-
63
-
2
t
CLCL
- 20
ns
ALE to valid data in
t
LLDV
-
200
-
8
t
CLCL
- 133
ns
Address to valid data in
t
AVDV
-
220
-
9
t
CLCL
- 155
ns
ALE to WR or RD
t
LLWL
75
175
3
t
CLCL
- 50
3
t
CLCL
+ 50
ns
Address valid to WR or RD
t
AVWL
67
-
4
t
CLCL
- 97
-
ns
WR or RD high to ALE high
t
WHLH
17
67
t
CLCL
- 25
t
CLCL
+ 25
ns
Data valid to WR transition
t
QVWX
5
-
t
CLCL
- 37
-
ns
Data setup before WR
t
QVWH
170
-
7
t
CLCL
- 122
-
ns
Data hold after WR
t
WHQX
15
-
t
CLCL
- 27
-
ns
Address float after RD
t
RLAZ
-
0
-
0
ns
8-Bit CMOS Microcontroller
GMS90 Series
MAY. 1998
37
LG Semicon MCU
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