Datasheet

DS87C520/DS83C520 EPROM/ROM High-Speed Microcontrollers
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MOVX CHARACTERISTICS (continued)
M2 M1 M0 MOVX CYCLES t
MCS
0 0 0 2 machine cycles 0
0 0 1 3 machine cycles (default) 4 t
CLCL
0 1 0 4 machine cycles 8 t
CLCL
0 1 1 5 machine cycles 12 t
CLCL
1 0 0 6 machine cycles 16 t
CLCL
1 0 1 7 machine cycles 20 t
CLCL
1 1 0 8 machine cycles 24 t
CLCL
1 1 1 9 machine cycles 28 t
CLCL
EXTERNAL CLOCK CHARACTERISTICS
PARAMETER SYMBOL MIN TYP MAX UNITS
Clock High Time t
CHCX
10 ns
Clock Low Time t
CLCX
10 ns
Clock Rise Time t
CLCL
5 ns
Clock Fall Time t
CHCL
5 ns
SERIAL PORT MODE 0 TIMING CHARACTERISTICS
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SM2 = 0, 12 clocks per cycle 12t
CLCL
Serial Port Clock Cycle
Time
t
XLXL
SM2 = 1, 4 clocks per cycle 4t
CLCL
ns
SM2 = 0, 12 clocks per cycle 10t
CLCL
Output Data Setup to
Clock Rising
t
QVXH
SM2 = 1, 4 clocks per cycle 3t
CLCL
ns
SM2 = 0, 12 clocks per cycle 2t
CLCL
Output Data Hold from
Clock Rising
t
XHQX
SM2 = 1, 4 clocks per cycle t
CLCL
ns
SM2 = 0, 12 clocks per cycle t
CLCL
Input Data Hold after
Clock Rising
t
XHDX
SM2 = 1, 4 clocks per cycle t
CLCL
ns
SM2 = 0, 12 clocks per cycle 11t
CLCL
Clock Rising Edge to
Input Data Valid
t
XHDV
SM2 = 1, 4 clocks per cycle 3t
CLCL
ns