ATWEBDVK-02VOIP Atmel, ATWEBDVK-02VOIP Datasheet - Page 121

• Manufacturer Part Number: ATWEBDVK-02VOIP
• Description: KIT DEV TCP/IP AT89C51RD2 VOIP
• Manufacturer: Atmel
• Series: @Webr

Specifications of ATWEBDVK-02VOIP

• Main Purpose: *
• Embedded: *
• Utilized Ic / Part: AT89C51RD2
• Primary Attributes: *
• Secondary Attributes: *
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

25.3.5
4235K–8051–05/08
External Data Memory Write Cycle
PORT 0
PORT 2
PSEN
ALE
WR
OR SFR-P2
ADDRESS
Table 25-6.
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
WLWH
QVWX
QVWH
WHQX
RHDX
RHDZ
AVWL
WHLH
WHLH
RLRH
RLDV
AVDV
LLWL
LLWL
RLAZ
LLDV
AC Parameters for a Variable Clock
A0-A7
T
Type
T
Max
Max
Max
Max
Max
Max
Max
LLAX
Min
Min
Min
Min
Min
Min
Min
Min
Min
AVWL
T
LLWL
Standard
3 T + x
6 T - x
6 T - x
5 T - x
2 T - x
8 T - x
9 T - x
3 T - x
4 T - x
7 T - x
Clock
T + x
T - x
T - x
T - x
ADDRESS A8-A15 OR SFR P2
x
x
T
QVWX
X2 Clock
1.5 T + x
0.5 T + x
2.5 T - x
4.5 T - x
1.5 T - x
0.5 T - x
3.5 T - x
0.5 T - x
0.5 T - x
3 T - x
3 T - x
2 T - x
4T -x
T - x
T
QVWH
x
x
T
DATA OUT
WLWH
AT89C51RD2/ED2
X parameter for
T
-M range
WHLH
25
25
30
25
45
65
30
30
30
20
20
15
20
20
0
0
T
WHQX
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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