AT83EC5123 ATMEL Corporation, AT83EC5123 Datasheet - Page 171

• Manufacturer Part Number: AT83EC5123
• Description: (AT8xx512x) Smart Card Reader ICs
• Manufacturer: ATMEL Corporation

External Data Memory Read Cycle
Serial Port Timing - Shift
Register Mode
Shift Register Timing Waveform
4202B–SCR–07/03
PORT 0
PORT 2
ALE
PSEN
RD
OR SFR-P2
ADDRESS
Table 131. Symbol Description (F = 40 MHz)
Table 132. AC Parameters for a Fix Clock (F = 40 MHz)
Table 133. AC Parameters for a Variable Clock
Symbol
T
T
T
T
T
QVHX
XHQX
XHDX
XHDV
XLXL
A0-A7
Symbol
T
T
T
T
T
T
QVHX
XHQX
XHDX
XHDV
XLXL
LLAX
T
AVWL
T
LLWL
Symbol
T
T
T
T
T
QVHX
XHQX
XHDX
XHDV
XLXL
T
AVDV
T
Type
Max
Min
Min
Min
Min
LLDV
ADDRESS A8-A15 OR SFR P2
T
RLAZ
Standard
Min
TBD
TBD
TBD
TBD
10 T - x
10 T - x
Clock
2 T - x
12 T
x
T
RLRH
Parameter
Serial port clock cycle time
Output data set-up to clock rising edge
Output data hold after clock rising edge
Input data hold after clock rising edge
Clock rising edge to input data valid
X2 Clock
5 T - x
5 T- x
DATA IN
T - x
6 T
x
Max
TBD
T
T
WHLH
RHDX
X parameter
for -M range
AT8xC5122/23
133
T
50
20
0
RHDZ
Units
ns
ns
ns
ns
ns
Units
ns
ns
ns
ns
ns
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