UTRON
Rev 1.5
UT51C164
256K X 16 BIT EDO DRAM
UTRON
EDO Mode, X16 (2CAS) Device Timing Diagram
― Waveforms of CAS - before - RAS Refresh Counter Test Cycle
RAS
VIH-
V IL-
t CSR(47)
UCAS, VIH-
LCAS VIL-
Address
VIH-
V IL-
Read Cycle
WE
VIH-
V IL-
I/O
VOH-
V OL-
Write Cycle
WE
VIH-
V IL-
OE
VIH-
V IL-
DQ
VIH-
V IL -
t RAS(1)
t CHR(49)
t CP(43)
t RSH(12)
t CAS(5)
t RCS(7)
t LZ(21)
t RWL(31)
t WCS(27)
t WCH(28)
DOUT
t CWL(26)
t DS(32)
t DH(33)
DIN
t RP(3)
t RRH(15)
t RCH(14)
t HZ(22)
Don't Care Undefined
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