A63L8336
256K X 36 Bit Synchronous High Speed SRAM
with Burst Counter and Pipelined Data Output
Preliminary
Features
Fast access times: 2.6/2.8/3.2/3.5/3.8/4.2 ns
(250/227/200/166/150/133 MHZ)
Single +3.3V+10% or +3.3V-5% power supply
Synchronous burst function
Three separate chip enables allow wide range of
options for CE control, address pipelining
Selectable BURST mode
SLEEP mode (ZZ pin) provided
Individual Byte Write control and Global Write
Registered output for pipelined applications
Available in 100-pin LQFP package
General Description
The A63L8336 is a high-speed SRAM containing 9M bits
of bit synchronous memory, organized as 256K words by
36 bits.
The A63L8336 combines advanced synchronous
peripheral circuitry, 2-bit burst control, input registers,
output registers and a 256KX36 SRAM core to provide a
wide range of data RAM applications.
The positive edge triggered single clock input (CLK)
controls all synchronous inputs passing through the
registers. Synchronous inputs include all addresses (A0 -
A17), all data inputs (I/O1 - I/O36), active LOW chip enable
Burst operations can be initiated with either the address
status processor ( ADSP ) or address status controller
( ADSC ) input pin. Subsequent burst sequence burst
addresses can be internally generated by the A63L8336
and controlled by the burst advance ( ADV ) pin. Write
cycles are internally self-timed and synchronous with the
rising edge of the clock (CLK).
This feature simplifies the write interface. Individual Byte
enables allow individual bytes to be written. BW1 controls
I/O1 - I/O9, BW2 controls I/O10 - I/O18, BW3 controls
I/O19 - I/O27, and BW4 controls I/O28 - I/O36, all on the
( CE ), two additional chip enables (CE2, CE2 ), burst
control inputs ( ADSC , ADSP , ADV ), byte write enables
( BWE , BW1 , BW2 , BW3 , BW4 ) and Global Write
condition that BWE is LOW. GW LOW causes all bytes
to be written.
( GW ). Asynchronous inputs include output enable ( OE ),
clock (CLK), BURST mode (MODE) and SLEEP mode
(ZZ).
PRELIMINARY
(July, 2005, Version 0.0)
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AMIC Technology, Corp.