參數(shù)資料
型號(hào): GMS90L320
英文描述: 8-Bit Single-Chip Microcontrollers(低電壓,8位單片微控制器)
中文描述: 8位單芯片微控制器(低電壓,8位單片微控制器)
文件頁(yè)數(shù): 37/46頁(yè)
文件大?。?/td> 683K
代理商: GMS90L320
GMS90C320
OCT. 2000 Ver 1.2
33
AC Characteristics for 40MHz
External Data Memory Characteristics
Advance Information (40MHz)
External Clock Drive
Parameter
Symbol
at 40 MHz Clock
Variable Clock
1/t
CLCL
= 3.5 to 40MHz
Unit
Min.
Max.
Min.
Max.
RD pulse width
t
RLRH
120
-
6t
CLCL
-30
-
ns
WR pulse width
t
WLWH
120
-
6t
CLCL
-30
-
ns
Address hold after ALE
t
LLAX2
10
-
t
CLCL
-15
-
ns
RD to valid data in
t
RLDV
-
75
-
5t
CLCL
-50
ns
Data hold after RD
t
RHDX
0
-
0
-
ns
Data float after RD
t
RHDZ
-
38
-
2t
CLCL
-12
ns
ALE to valid data in
t
LLDV
-
150
-
8t
CLCL
-50
ns
Address to valid data in
t
AVDV
-
150
-
9t
CLCL
-75
ns
ALE to WR or RD
t
LLWL
60
90
3t
CLCL
-15
3t
CLCL
+15
ns
Address valid to WR or RD
t
AVWL
70
-
4t
CLCL
-30
-
ns
WR or RD high to ALE high
t
WHLH
10
40
t
CLCL
-15
t
CLCL
+15
ns
Data valid to WR transition
t
QVWX
5
-
t
CLCL
-20
-
ns
Data setup before WR
t
QVWH
125
-
7t
CLCL
-50
-
ns
Data hold after WR
t
WHQX
5
-
t
CLCL
-20
-
ns
Address float after RD
t
RLAZ
-
0
-
0
ns
Parameter
Symbol
Variable Oscillator
(Freq. = 3.5 to 40MHz)
Unit
Min.
Max.
Oscillator period
t
CLCL
25
285.7
ns
High time
t
CHCX
10
t
CLCL
- t
CLCX
ns
Low time
t
CLCX
10
t
CLCL
- t
CHCX
ns
Rise time
t
CLCH
-
10
ns
Fall time
t
CHCL
-
10
ns
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