Functional Description[1]

The CY7C1481V25/CY7C1483V25/CY7C1487V25 is a 2.5V, 2M x 36/4M x 18/1M x 72 Synchronous Flow-through SRAM 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

• Supports 133 MHz bus operations

• 2M x 36/4M x 18/1M x 72 common IO

• 2.5V core power supply (VDD)

• 2.5V or 1.8V IO supply (VDDQ)

• Fast clock-to-output time

— 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

• CY7C1481V25, CY7C1483V25 available in JEDEC-standard Pb-free 100-pin TQFP, Pb-free and non-Pb-free 165-ball FBGA package. CY7C1487V25 available in Pb-free and non-Pb-free 209-ball FBGA package

• IEEE 1149.1 JTAG-Compatible Boundary Scan

• “ZZ” Sleep Mode option