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A67P9318 Datasheet Preview

A67P9318 Datasheet

(A67P8336 / A67P9318) Pipelined ZeBL SRAM

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A67P9318/A67P8336
Preliminary
512K X 18, 256K X 36 LVTTL, Pipelined ZeBLTM SRAM
Document Title
512K X 18, 256K X 36 LVTTL, Pipelined ZeBLTM SRAM
Revision History
Rev. No. History
0.0 Initial issue
Issue Date
July 13, 2005
Remark
Preliminary
PRELIMINARY (July, 2005, Version 0.0)
AMIC Technology, Corp.




AMIC Technology

A67P9318 Datasheet Preview

A67P9318 Datasheet

(A67P8336 / A67P9318) Pipelined ZeBL SRAM

No Preview Available !

A67P9318/A67P8336
Preliminary
512K X 18, 256K X 36 LVTTL, Pipelined ZeBLTM SRAM
Features
Fast access time:
2.6/2.8/3.2/3.5/3.8/4.2 (250/227/200/166/150/133MHz)
Zero Bus Latency between READ and WRITE cycles
allows 100% bus utilization
Signal +2.5V ± 5% power supply
Individual Byte Write control capability
Clock enable ( CEN) pin to enable clock and suspend
operations
Clock-controlled and registered address, data and
control signals
Registered output for pipelined applications
Three separate chip enables allow wide range of
options for CE control, address pipelining
Internally self-timed write cycle
Selectable BURST mode (Linear or Interleaved)
SLEEP mode (ZZ pin) provided
Available in 100 pin LQFP package
General Description
The AMIC Zero Bus Latency (ZeBLTM) SRAM family
employs high-speed, low-power CMOS designs using an
advanced CMOS process.
The A67P9318, A67P8336 SRAMs integrate a 512K X 18,
256K X 36 SRAM core with advanced synchronous
peripheral circuitry and a 2-bit burst counter. These SRAMs
are optimized for 100 percent bus utilization without the
insertion of any wait cycles during Write-Read alternation.
The positive edge triggered single clock input (CLK) controls
all synchronous inputs passing through the registers. The
synchronous inputs include all address, all data inputs,
active low chip enable ( CE), two additional chip enables for
easy depth expansion (CE2, CE2 ), cycle start input
(ADV/ LD ), synchronous clock enable ( CEN ), byte write
enables (BW1,BW2 ,BW3 ,BW4 ) and read/write (R/ W ).
Asynchronous inputs include the output enable ( OE ), clock
(CLK), SLEEP mode (ZZ, tied LOW if unused) and burst
mode (MODE). Burst Mode can provide either interleaved or
linear operation, burst operation can be initiated by
synchronous address Advance/Load (ADV/LD ) pin in Low
state. Subsequent burst address can be internally
generated by the chip and controlled by the same input pin
ADV/LD in High state.
Write cycles are internally self-time and synchronous with
the rising edge of the clock input and when R/ W is Low.
The feature simplified the write interface. Individual Byte
enables allow individual bytes to be written. BW1 controls
I/Oa pins; BW2 controls I/Ob pins; BW3 controls I/Oc pins;
and BW4 controls I/Od pins. Cycle types can only be
defined when an address is loaded.
The SRAM operates from a +2.5V power supply, and all
inputs and outputs are LVTTL-compatible. The device is
ideally suited for high bandwidth utilization systems.
PRELIMINARY (July, 2005, Version 0.0)
2
AMIC Technology, Corp.


Part Number A67P9318
Description (A67P8336 / A67P9318) Pipelined ZeBL SRAM
Maker AMIC Technology
Total Page 18 Pages
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