LH5P1632
CE
VIH
VIL
A0 - A7
VIH
VIL
LOE/RFSH VIH
UOE
VIL
LWR VIH
UWR VIL
I/O1 - I/O16 VOH
VOL
NOTE: A8 - A14 = Don't Care
tP
tAS
tAH
ADDRESS
INPUT
tOES
tRCS
CMOS 512K (32K × 16) Pseudo-Static RAM
tRC
tCE
tP
tOEH
tRCH
HIGH - Z
Figure 7. CE Only Refresh Cycle
5P1632-6
CE
VIH
VIL
LOE/RFSH
VIH
VIL
tRFD
tFC
tFAP
tFP
tFAP
tFCE
I/O1 - I/O16 VOH
VOL
HIGH - Z
NOTE: A0 - A14, LWR, UWR, UOE = Don't Care
Figure 8. Auto Refresh Cycle
5P1632-7
8