AT80C51RD2_08 Datasheet, PDF (73/86 Pages) ATMEL Corporation – 80C51 High Performance ROM 8-bit Microcontroller

AT8xc51Rx2
19.4.6 External Data Memory Read Cycle
ALE
T_LLDV
T_WHLH
PSEN
RD
PORT 0
PORT 2
ADDRESS
OR SFR-P2
T_LLWL
T_RLRH
T_LLAX
A0-A7
T_AVWL
T_AVDV
T_RLAZ
T_RHDX
DATA IN
ADDRESS A8-A15 OR SFR P2
T_RHDZ
19.4.7
Serial Port Timing - Shift Register Mode
Table 19-7. Symbol Description
Symbol
T_XLXL
T_QVHX
T_XHQX
T_XHDX
T_XHDV
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
Table 19-8. AC Parameters for a Fix Clock
Symbol
T_XLXL
T_QVHX
T_XHQX
T_XHDX
T_XHDV
-M
Min
300
200
30
0
Max
Min
300
200
30
0
117
-L
Max
117
Units
ns
ns
ns
ns
ns
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4113C–8051–01/08