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AT80C51RA2-RLSIV Datasheet(PDF) 66 Page - ATMEL Corporation

Part # AT80C51RA2-RLSIV
Description  High Performance 8-bit Microcontroller
PDF  86 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT80C51RA2-RLSIV Datasheet(HTML) 66 Page - ATMEL Corporation

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66
4188F–8051–01/08
AT/TS8xC51Rx2
11.5.4
External Data Memory Characteristics
Table 11-8.
AC Parameters for a Fix Clock
Symbol
Parameter
TRLRH
RD Pulse Width
TWLWH
WR Pulse Width
TRLDV
RD to Valid Data In
TRHDX
Data Hold After RD
TRHDZ
Data Float After RD
TLLDV
ALE to Valid Data In
TAVDV
Address to Valid Data In
TLLWL
ALE to WR or RD
TAVWL
Address to WR or RD
TQVWX
Data Valid to WR Transition
TQVWH
Data set-up to WR High
TWHQX
Data Hold After WR
TRLAZ
RD Low to Address Float
TWHLH
RD or WR High to ALE high
Speed
-M
40 MHz
-V
X2 mode
30 MHz
60 MHz equiv.
-V
standard mode 40
MHz
-L
X2 mode
20 MHz
40 MHz equiv.
-L
standard mode
30 MHz
Units
Symbol
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
TRLRH
130
85
135
125
175
ns
TWLWH
130
85
135
125
175
ns
TRLDV
100
60
102
95
137
ns
TRHDX
0
0
0
0
0
ns
TRHDZ
30
18
35
25
42
ns
TLLDV
160
98
165
155
222
ns
TAVDV
165
100
175
160
235
ns
TLLWL
50
100
30
70
55
95
45
105
70
130
ns
TAVWL
75
47
80
70
103
ns
TQVWX
10
7
15
5
13
ns
TQVWH
160
107
165
155
213
ns
TWHQX
15
9
17
10
18
ns
TRLAZ
0
0
0
0
0
ns
TWHLH
10
40
7
27
15
35
5
45
13
53
ns



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