A63L83361
256K X 36 Bit Synchronous High Speed SRAM with
Burst Counter and Flow-through Data Output
Preliminary
Features
ꢀFast access times: 6.5/7.5/8.0 ns(153/133/117 MHz)
ꢀSingle 3.3V±5% power supply
ꢀSynchronous burst function
ꢀIndividual Byte Write control and Global Write
ꢀThree separate chip enables allow wide range of
options for CE control, address pipelining
ꢀSelectable BURST mode
ꢀSLEEP mode (ZZ pin) provided
ꢀAvailable in 100-pin LQFP package
ꢀIndustrial operating temperature range: -45°C to
+125°C for -I series
General Description
The A63L83361 is a high-speed SRAM containing 9M bits
of bit synchronous memory, organized as 256K words by
36 bits.
The A63L83361 combines advanced synchronous
peripheral circuitry, 2-bit burst control, input registers,
output buffer and a 256K X 36 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
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 A63L83361
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
enable ( CE ), two additional chip enables (CE2, CE2 ),
burst control inputs ( ADSC , ADSP , ADV ), byte write
enables ( BWE , BW1, BW2 , BW3 , BW4 ) and Global
Write ( GW ). Asynchronous inputs include output enable
condition that BWE is LOW. GW LOW causes all bytes
to be written.
( OE ), clock (CLK), BURST mode (MODE) and SLEEP
mode (ZZ).
PRELIMINARY
(July, 2005, Version 0.0)
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AMIC Technology, Corp.