®
LY6125616
5V 256K X 16 BIT HIGH SPEED CMOS SRAM
Rev. 2.1
WRITE CYCLE 3 (LB#,UB# Controlled)
(1,2,5,6)
tWC
Address
tAW
tWR
CE#
tAS
tCW
tBW
LB#,UB#
WE#
tWP
tWHZ
High-Z
Dout
Din
(4)
tDW
tDH
Data Valid
Notes :
1.WE#,CE#, LB#, UB# must be high during all address transitions.
2.A write occurs during the overlap of a low CE#, low WE#, LB# or UB# = low.
3.During a WE# controlled write cycle with OE# low, tWP must be greater than tWHZ + tDW to allow the drivers to turn off and data to be
placed on the bus.
4.During this period, I/O pins are in the output state, and input signals must not be applied.
5.If the CE#, LB#, UB# low transition occurs simultaneously with or after WE# low transition, the outputs remain in a high impedance
state.
6.tOW and tWHZ are specified with CL = 5pF. Transition is measured ±500mV from steady state.
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, Industry E. Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan.
TEL: 886-3-6668838
FAX: 886-3-6668836
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