70P249数据手册集成电路（IC）的存储器规格书PDF

描述 Description

The IDT70P249 is a very low power 4K x 16 Dual-Port Static RAM. The IDT70P249 is designed to be used as a stand-alone 64K-bit Dual-Port SRAM. This device provides two independent ports with separate control, address, and I/O pins that permit independent, asynchronous access for reads or writes to any location in memory. An automatic power down feature controlled by CS permits the on-chip circuitry of each port to enter a very low standby power mode.

Fabricated using IDT's CMOS high-performance technology, these devices typically operate on only 27mW of power.

特性 Features

• True Dual-Ported memory cells which allow simultaneous reads of the same memory location
• Both ports configurable to standard SRAM or timemultiplexed address/data interface
• High-speed access (65ns max. ADM mode, 40ns max. Standard SRAM mode)
• Low-power operation, Active: 27mW (typ.), Standby: 3.6?W (typ.)
• Power supply isolation functionality to aid system power management
• Separate upper-byte and lower-byte control
• Supports 3.0V, 2.5V and 1.8V I/O's
• Input Read Register
• Output Drive Register
• BUSY and Interrupt Flag
• On-chip port arbitration logic
• Fully asynchronous operation from either port
• Available in 100 Ball 0.5mm-pitch BGA
• Industrial temperature range (-40°C to +85°C)
• Green parts available