參數(shù)資料
型號(hào): HMS99C51
廠商: Hynix Semiconductor Inc.
元件分類(lèi): 8位微控制器
英文描述: 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 8位單晶片微控制器
文件頁(yè)數(shù): 34/43頁(yè)
文件大小: 533K
代理商: HMS99C51
HMS99C5X Series
30
Jan. 2003 Ver 1.0
AC Characteristics for HMS99C5X series (24MHz)
External Data Memory Characteristics
Advance Information (24MHz)
External Clock Drive
Parameter
Symbol
24 MHz Oscillator
Variable Oscillator
1/t
CLCL
= 3.5 to 24MHz
Unit
Min.
Max.
Min.
Max.
RD pulse width
t
RLRH
180
-
6t
CLCL
-70
-
ns
WR pulse width
t
WLWH
180
-
6t
CLCL
-70
-
ns
Address hold after ALE
t
LLAX2
15
-
t
CLCL
-27
-
ns
RD to valid data in
t
RLDV
-
118
-
5t
CLCL
-90
ns
Data hold after RD
t
RHDX
0
-
0
-
ns
Data float after RD
t
RHDZ
-
63
-
2t
CLCL
-20
ns
ALE to valid data in
t
LLDV
-
200
-
8t
CLCL
-133
ns
Address to valid data in
t
AVDV
-
220
-
9t
CLCL
-155
ns
ALE to WR or RD
t
LLWL
75
175
3t
CLCL
-50
3t
CLCL
+50
ns
Address valid to WR or RD
t
AVWL
67
-
4t
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
-
7t
CLCL
-122
-
ns
Data hold after WR
t
WHQX
15
-
t
CLCL
-27
-
ns
Address float after RD
t
RLAZ
-
0
-
0
ns
Parameter
Symbol
Variable Oscillator
(Freq. = 3.5 to 24MHz)
Unit
Min.
Max.
Oscillator period
t
CLCL
41.7
285.7
ns
High time
t
CHCX
12
t
CLCL
- t
CLCX
ns
Low time
t
CLCX
12
t
CLCL
- t
CHCX
ns
Rise time
t
CLCH
-
12
ns
Fall time
t
CHCL
-
12
ns
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