參數(shù)資料
型號(hào): HMS99C58S
廠商: Electronic Theatre Controls, Inc.
英文描述: 8-BIT SINGLE-CHIP MICROCONTROLLERS WITH EMBEDDED FLASH
中文描述: 8位單片機(jī)與嵌入式閃存微控制器
文件頁(yè)數(shù): 39/73頁(yè)
文件大小: 696K
代理商: HMS99C58S
HMS99C51S/52S/54S/56S/58S
Sep. 2004 Ver 1.01
35
AC Characteristics for HMS99C51S/52S/54S/56S/58S(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
132
-
6t
CLCL
-50
-
ns
WR pulse width
t
WLWH
132
-
6t
CLCL
-50
-
ns
Address hold after ALE
t
LLAX2
10
-
t
CLCL
-20
-
ns
RD to valid data in
t
RLDV
-
81
-
5t
CLCL
-70
ns
Data hold after RD
t
RHDX
0
-
0
-
ns
Data float after RD
t
RHDZ
-
46
-
2t
CLCL
-15
ns
ALE to valid data in
t
LLDV
-
153
-
8t
CLCL
-90
ns
Address to valid data in
t
AVDV
-
183
-
9t
CLCL
-90
ns
ALE to WR or RD
t
LLWL
71
111
3t
CLCL
-20
3t
CLCL
+20
ns
Address valid to WR or RD
t
AVWL
66
-
4t
CLCL
-55
-
ns
WR or RD high to ALE high
t
WHLH
10
40
t
CLCL
-20
t
CLCL
+20
ns
Data valid to WR transition
t
QVWX
5
-
t
CLCL
-25
-
ns
Data setup before WR
t
QVWH
142
-
7t
CLCL
-70
-
ns
Data hold after WR
t
WHQX
10
-
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
30.3
285.7
ns
High time
t
CHCX
11.5
t
CLCL
- t
CLCX
ns
Low time
t
CLCX
11.5
t
CLCL
- t
CHCX
ns
Rise time
t
CLCH
-
5
ns
Fall time
t
CHCL
-
5
ns
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