Cypress Switching Waveforms, Read Cycle No. 2 OE Controlled 17, MoBL CY62148EV30, + Feedback

MoBL® CY62148EV30

Switching Waveforms

Figure 1. Read Cycle No. 1 (Address Transition Controlled) [16, 17]

tRC

ADDRESS

tAA

tOHA

DATA OUT PREVIOUS DATA VALID DATA VALID

	Figure 2. Read Cycle No. 2 (OE Controlled) [17, 18]
ADDRESS
	tRC
CE
	tACE
OE		tHZOE
	tDOE
		tHZCE
	tLZOE		HIGH
	HIGH IMPEDANCE		IMPEDANCE
DATA OUT	DATA VALID
	tLZCE
		tPD
V	tPU		ICC
CC	50%		50%
SUPPLY
CURRENT			ISB
	Figure 3. Write Cycle No. 1 (WE Controlled, OE HIGH During Write) [19, 20]

		tWC
ADDRESS
		tSCE
CE
	tAW		tHA
	tSA	tPWE
WE
OE
		tSD	t
			HD
DATA IO	NOTE 21	DATA VALID
	tHZOE

Notes

16.Device is continuously selected. OE, CE = VIL.

17.WE is HIGH for read cycles.

18.Address valid before or similar to CE transition LOW.

19.Data IO is high impedance if OE = VIH.

20.If CE goes HIGH simultaneously with WE HIGH, the output remains in high impedance state.

21.During this period, the IOs are in output state. Do not apply input signals.

Document #: 38-05576 Rev. *G Page 6 of 12

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