描述 Description

The IDT70P35/34L (IDT70P25/24L) is a high-speed 8/4K x 18 (8/4K x 16) Dual-Port Static RAM. The IDT70P35/34L (IDT70P25/24L) is designed to be used as a stand-alone Dual-Port RAM or as a combination MASTER/SLAVE Dual-Port RAM for 36-bit (32-bit) or wider memory system applications results in full-speed, error-free operation without the need for additional discrete logic.

特性 Features

◆ True Dual-Ported memory cells which allow simultaneous reads of the same memory location

◆ High-speed access

IDT70P35/34L (IDT70P25/24L)

– Commercial: 20/25ns (max.)

– Industrial: 25ns (max.)

◆ Low-power operation

IDT70P35/34L (IDT70P25/24L)

Active: 30.6mW (typ.)

Standby: 5.4mW (typ.)

◆ Separate upper-byte and lower-byte control for multiplexed bus compatibility

◆ IDT70P35/34L (IDT70P25/24L) easily expands data bus width to 36 bits (32 bits) or more using the Master/Slave select when cascading more than one device

◆ M/S = VIH for BUSY output flag on Master M/S = VIL for BUSY input on Slave

◆ BUSY and Interrupt Flag

◆ On-chip port arbitration logic

◆ Full on-chip hardware support of semaphore signaling between ports

◆ Fully asynchronous operation from either port

◆ LVTTL-compatible, single 1.8V (±100mV) power supply

◆ Available in a 100-pin Thin Quad Flatpack (TQFP) package, 100-pin 0.8mm pitch Ball Grid Array (fpBGA), and 100-pin 0.5mm pitch BGA (fpBGA)

◆ Industrial temperature range (-40°C to +85°C) is available for selected speeds