HYB514256B Datasheet, PDF (21/22 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
V
IH
RAS
VIL
tRC
tRP
tRAS
tRCD
tRSH
CAS
A0-A8
WE
V
IH
VIL
tRAD
tRAH
tASC
tASR
tCAH
V
IH
Row
Column
VIL
Addr
Address
tWCS
tWCH
V
tWP
IH
VIL
V
IH
OE
VIL
V
I/O1-I/O4 ^IH
(Inputs) _VIL
V
I/O1-I/O4 ^OH
(Outputs) _VOL
tDS
tDH
Valid Data
HI-Z
tRC
tRP
tRAS
tCHR
tCRP
tASR
Row
Address
“H” or “L”
Hidden Refresh Cycle (Early Write)
Semiconductor Group
75