Epson S1D13504 manual EDO-DRAM Self-Refresh Timing

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7.3.5 EDO-DRAM Self-Refresh Timing

	Stopped for	Restarted for
t1	suspend mode	active mode
Memory
Clock	t5
	t2
RAS#
CAS#
t3	t4

Figure 7-11: EDO-DRAM Self-Refresh Timing

Table 7-11: EDO-DRAM Self-Refresh Timing

Symbol	Parameter	Min	Typ	Max	Units
t1	Memory clock period	25			ns
t2	RAS# to CAS# precharge time (REG[22h] bits [3:2] = 00)	1.45 t1			ns
	RAS# to CAS# precharge time (REG[22h] bits [3:2] = 01 or 10)	0.45 t1			ns
t3	CAS# precharge time (REG[22h] bits [3:2] = 00)	2 t1			ns
	CAS# precharge time (REG[22h] bits [3:2] = 01 or 10)	1 t1			ns
t4	CAS# setup time (REG[22h] bits [3:2] = 00 or 10)	0.45 t1 - 2			ns
	CAS# setup time (REG[22h] bits [3:2] = 01)	1 t1 - 2			ns
	RAS# precharge time (REG[22h] bits [3:2] = 00)	2 t1 - 1			ns
t5	RAS# precharge time (REG[22h] bits [3:2] = 01)	1.45 t1 - 1			ns
	RAS# precharge time (REG[22h] bits [3:2] = 10)	1 t1 - 1			ns

S1D13504	Hardware Functional Specification
X19A-A-002-18	Issue Date: 01/01/30