General Description

The AMIC Zero Bus Latency (ZeBLTM) SRAM family employs high-speed, low-power CMOS designs using an advanced CMOS process.

The A67P83181, A67P73361 SRAMs integrate a 256K X 18, 128K 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.

Features

■ Fast access time: 6.5/7.5/8.5 ns (153, 133, 117 MHz)

■ 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