UTRON
Rev 1.5
UT51C164
256K X 16 BIT EDO DRAM
UTRON EDO Mode, X16 (2CAS) Device Timing Diagram
― Waveforms of Hidden Refresh Cycle (Read)
RAS VIH -
VIL -
t CRP(13)
t RAS(1)
t RC(2)
t AR(23)
t RCD(6)
t RSH(12)
UCAS, VIH -
LCAS VIL -
t ASR(8)
t RAD(24)
t ASC(10)
t RAH(9)
t CAH(11)
Address
V IH
V IL
-
-
ROW
ADD
COLUMN
ADDRESS
WE
VIH -
VIL -
t RCS(7)
t CAA(20)
t RP(3)
t RRH(15)
t RAS(1)
t RC(2)
t CHR(49)
t RP(3)
t CRP(13)
OE VIH -
VIL -
DQ VOH -
V OL -
t RAC(19)
t CAC(18)
t LZ(21)
t OAC(17)
VALID DATA
t HZ(22)
t HZ(22)
Don't Care Undefined
UTRON TECHNOLOGY INC.
1F, No. 11, R&D Rd. II, Science-Based Industrial Park, Hsinchu, Taiwan, R. O. C.
TEL: 886-3-5777882 FAX: 886-3-5777919
21
P90005