HYB514256B Datasheet, PDF (19/22 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
RAS
IH
VIL
V
IH
CAS
VIL
V
WE
IH
VIL
V
OE
IH
VIL
V
I/O1-I/O4 ^IH
(Inputs) _VIL
V
I/O1-I/O4 ^OH
(Outputs)VOL
tRC
tRP
tRAS
tRPC
tCP
tCSR
tCHR
tWRP
tWRH
tOEZ
tCDD
tODD
tOFF
HI-Z
“H” or “L”
CAS-Before-RAS Refresh Cycle
Semiconductor Group
73
tRP
tRPC
tCRP