Cypress manual Software Controlled STORE/RECALL Cycle, Preliminary, CY14B108L, CY14B108N

PRELIMINARY CY14B108L, CY14B108N

Software Controlled STORE/RECALL Cycle

In the following table, the software controlled STORE and RECALL cycle parameters are listed.[22, 23]

Parameters	Description		20 ns			25 ns			45 ns		Unit
		Min		Max	Min		Max	Min		Max
tRC	STORE/RECALL Initiation Cycle Time	20			25			45			ns
tSA	Address Setup Time	0			0			0			ns
tCW	Clock Pulse Width	15			20			30			ns
tHA	Address Hold Time	0			0			0			ns
tRECALL	RECALL Duration			200			200			200	μs

Switching Waveforms

Figure 11. CE and OE Controlled Software STORE/RECALL Cycle[23]

		tRC	tRC
Address		Address #1	Address #6
	tSA	tCW	tCW
CE		tHA	tHA
t
	SA	tHA		t
				HA
OE
			tDELAY	tHHHD
HSB (STORE only)	tLZCE	tHZCE		tLZHSB
DQ (DATA)				High Impedance
				tSTORE/tRECALL
RWI

Figure 12. Autostore Enable/Disable Cycle

	tRC
Address	Address #1
tSA	tCW
CE
tSA
OE
tLZCE
DQ (DATA)

	tRC
	Address #6
	tCW
tHA	tHA
tHA
	t
	HA
tHZCE	tSS
	tDELAY

Notes

22.The software sequence is clocked with CE controlled or OE controlled reads.

23.The six consecutive addresses must be read in the order listed in Table 2 on page 6. WE must be HIGH during all six consecutive cycles.

Document #: 001-45523 Rev. *B Page 14 of 24

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