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.

特性 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