HYB514256B Datasheet, PDF (11/22 Pages) Siemens Semiconductor Group – 256 K x 4-Bit Dynamic RAM Low Power 256 K x 4-Bit Dynamic RAM

HYB 514256B/BL/BJ/BJL-50/-60/-70
256 K × 4-DRAM
Waveforms
V
RAS
IH
VIL
V
IH
CAS
VIL
V
IH
A0 - A8
VIL
V
IH
WE
VIL
V
IH
OE
VIL
V
I/O1-I/O4 ^IH
(Inputs) _VIL
V
I/O1-I/O4 ^OH
(Outputs) _VOL
tRC
tRAS
tRP
tCSH
tRCD
tRSH
tCAS
tASR
tRAD
tASC
tCAH
tRAL
Row
Address
Column
Address
t_{RAH tRCS}
tAA
tOEA
tCRP
tASR
tRCH
tRRH
Row
Address
tDZC
tDZO
tODD
tCDD
tCAC
tCLZ
tOEZ
tOFF
Hi Z
Valid Data Out
Hi Z
tRAC
“H” or “L”
Read Cycle
Semiconductor Group
65