SRAM Chip Async Dual 3.3V 256K-Bit 32K x 8 35ns 68-Pin PLCC T/R

The IDT70V07 is a high-speed 32K x 8 Dual-Port Static RAM. The IDT70V07 is designed to be used as a stand-alone 256K-bit Dual-Port RAM or as a combination MASTER/SLAVE Dual-Port RAM for 16-bitor-more word systems. Using the IDT MASTER/SLAVE Dual-Port RAM approach in 16-bit or wider memory system applications results in full speed, error-free operation without the need for additional discrete logic. 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 CE permits the on-chip circuitry of each port to enter a very low standby power mode. Fabricated using CMOS high-performance technology, these devices typically operate on only 300mW of power. The IDT70V07 is packaged in a ceramic 68-pin PGA and PLCC and a 80-pin thin quad flatpack (TQFP).

• True Dual-Ported memory cells which allow simultaneous access of the same memory location
• High-speed access
  • Commercial: 25/35/55ns (max.)
  • Industrial: 25/35ns (max.)
• Low-power operation
  • IDT70V07L Active: 300mW (typ.) Standby: 660µW (typ.)
• Interrupt Flag
• IDT70V07 easily expands data bus width to 16 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
• On-chip port arbitration logic
• Full on-chip hardware support of semaphore signaling between ports
• Fully asynchronous operation from either port
• TTL-compatible, single 3.3V (±0.3V) power supply
• Available in 68-pin PGA and PLCC, and a 80-pin TQFP
• Industrial temperature range (-40°C to +85°C) is available for selected speeds