Maxim DS87C530 manual 37

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock

MOVX CHARACTERISTICS USING STRETCH MEMORY CYCLES (continued)

M2	M1	M0	MOVX CYCLES	tMCS
0	0	0	2 machine cycles	0
0	0	1	3 machine cycles (default)	4 tCLCL
0	1	0	4 machine cycles	8 tCLCL
0	1	1	5 machine cycles	12 tCLCL
1	0	0	6 machine cycles	16 tCLCL
1	0	1	7 machine cycles	20 tCLCL
1	1	0	8 machine cycles	24 tCLCL
1	1	1	9 machine cycles	28 tCLCL

EXTERNAL CLOCK CHARACTERISTICS

PARAMETER	SYMBOL	MIN	TYP MAX	UNITS
Clock High Time	tCHCX	10		ns
Clock Low Time	tCLCX	10		ns
Clock Rise Time	tCLCL		5	ns
Clock Fall Time	tCHCL		5	ns

SERIAL PORT MODE 0 TIMING CHARACTERISTICS

PARAMETER	SYMBOL	CONDITIONS	MIN TYP MAX	UNITS
Serial Port Clock Cycle	tXLXL	SM2 = 0, 12 clocks per cycle	12tCLCL	ns
Time		SM2 = 1, 4 clocks per cycle	4tCLCL
Output Data Setup to	tQVXH	SM2 = 0, 12 clocks per cycle	10tCLCL	ns
Clock Rising		SM2 = 1, 4 clocks per cycle	3tCLCL
Output Data Hold from	tXHQX	SM2 = 0, 12 clocks per cycle	2tCLCL	ns
Clock Rising		SM2 = 1, 4 clocks per cycle	tCLCL
Input Data Hold after	tXHDX	SM2 = 0, 12 clocks per cycle	tCLCL	ns
Clock Rising		SM2 = 1, 4 clocks per cycle	tCLCL
Clock Rising Edge to	tXHDV	SM2 = 0, 12 clocks per cycle	11tCLCL	ns
Input Data Valid		SM2 = 1, 4 clocks per cycle	3tCLCL

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