Functional Description

The CY7C1325H is a 256 K × 18 synchronous cache RAM designed to interface with high speed microprocessors with minimum glue logic. Maximum access delay from clock rise is 6.5 ns (133 MHz version). A 2 bit on-chip counter captures the first address in a burst and increments the address automatically for the rest of the burst access.

Features

■ 256 K × 18 common I/O

■ 3.3 V core power supply (VDD)

■ 2.5 V or 3.3 V I/O power supply (VDDQ)

■ Fast clock-to-output times

■ 6.5 ns (133 MHz version)

■ Provide high performance 2-1-1-1 access rate

■ User selectable burst counter supporting Intel Pentium interleaved or linear burst sequences

■ Separate processor and controller address strobes

■ Synchronous self timed write

■ Asynchronous output enable

■ Available in Pb-free 100-pin TQFP package

■ “ZZ” sleep mode option