Functional Description

The Cypress Synchronous Burst SRAM family employs high-speed, low-power CMOS designs using advanced triple-layer polysilicon, double-layer metal technology. Each memory cell consists of four transistors and two high valued resistors.

The CY7C1340A/GVT71128C32 SRAM integrates 131,072 × 32 SRAM cells with advanced synchronous peripheral circuitry and a two-bit counter for internal burst operation.

特性 Features

? Fast access times: 5 and 7 ns

? Fast clock speed: 100 and 66 MHz

? Provides high-performance 3-1-1-1 access rate

? Fast OE access times: 5 and 7 ns

? Optimal for performance (two-cycle chip deselect, depth expansion without wait state)

? Single +3.3V –5 and +10power supply

? Supports +2.5V I/O

? 5V tolerant inputs except I/Os

? Clamp diodes to VSSQ at all outputs

? Common data inputs and outputs

? Byte Write Enable and Global Write control

? Three chip enables for depth expansion and address pipeline

? Address, control, input, and output pipeline registers

? Internally self-timed Write Cycle

? Burst control pins (interleaved or linear burst sequence)

? Automatic power-down for portable applications

? High-density, high-speed packages

? Low-capacitive bus loading

? High 30-pF output drive capability at rated access time