AT83EC5123 ATMEL Corporation, AT83EC5123 Datasheet - Page 170
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AT83EC5123
Manufacturer Part Number
AT83EC5123
Description
(AT8xx512x) Smart Card Reader ICs
Manufacturer
ATMEL Corporation
Datasheet
1.AT83EC5123.pdf
(187 pages)
- Current page: 170 of 187
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External Data Memory Write Cycle
170
AT8xC5122/23
PORT 0
PORT 2
PSEN
ALE
WR
OR SFR-P2
ADDRESS
Table 130. AC Parameters for a Variable Clock
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
WLWH
QVWH
WHQX
QVWX
WHLH
WHLH
RLRH
RLDV
RHDX
RHDZ
AVDV
AVWL
LLDV
LLWL
LLWL
RLAZ
A0-A7
T
T
LLAX
AVWL
T
LLWL
Type
Max
Max
Max
Max
Max
Max
Max
Min
Min
Min
Min
Min
Min
Min
Min
Min
ADDRESS A8-A15 OR SFR P2
T
QVWX
Standard
Clock
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
T + x
T - x
T - x
T - x
x
x
T
QVWH
T
DATA OUT
WLWH
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
x
x
T
WHLH
X parameter
20
20
25
20
40
60
25
25
25
15
25
10
15
15
T
0
0
WHQX
4202B–SCR–07/03
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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