AT83EC5123 ATMEL Corporation, AT83EC5123 Datasheet - Page 169
AT83EC5123
Manufacturer Part Number
AT83EC5123
Description
(AT8xx512x) Smart Card Reader ICs
Manufacturer
ATMEL Corporation
Datasheet
1.AT83EC5123.pdf
(187 pages)
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External Data Memory
Characteristics
4202B–SCR–07/03
Table 128. Symbol Description
Table 129. AC Parameters for a Variable Clock (F = 40 MHz)
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
WLWH
QVWX
QVWH
WHQX
WHLH
RLRH
RHDX
RHDZ
AVDV
AVWL
RLDV
LLWL
RLAZ
LLDV
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
WLWH
QVWX
QVWH
WHQX
RHDX
AVWL
WHLH
RLRH
RLDV
RHDZ
AVDV
LLDV
LLWL
RLAZ
Parameter
RD Pulse Width
WR Pulse Width
RD to Valid Data In
Data Hold After RD
Data Float After RD
ALE to Valid Data In
Address to Valid Data In
ALE to WR or RD
Address to WR or RD
Data Valid to WR Transition
Data set-up to WR High
Data Hold After WR
RD Low to Address Float
RD or WR High to ALE high
Min
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
Max
TBD
TBD
TBD
TBD
TBD
TBD
TBD
AT8xC5122/23
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
169
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