32K x 18 3.3V Dual-Port RAM

The IDT70V37 is a high-speed 32K x 18 Dual-Port Static RAM. The IDT70V37 is designed to be used as a stand-alone 576K-bit Dual-Port RAM or as a combination MASTER/SLAVE Dual-Port RAM for 36-bit-or-more word system. Using the IDT MASTER/SLAVE Dual-Port RAM approach in 36-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 the chip enables (either CE0 or CE1) permit 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 440mW of power. The IDT70V37 is packaged in a 100-pin Thin Quad Flatpack (TQFP).

• True Dual-Ported memory cells which allow simultaneous access of the same memory location
• High-speed access
  • Commercial: 15/20ns (max.)
  • Industrial: 20ns (max.)
• Low-power operation
  • IDT70V37L Active: 440mW (typ.) Standby: 660µW (typ.)
• Dual chip enables allow for depth expansion without external logic
• IDT70V37 easily expands data bus width to 36 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 Flags
• On-chip port arbitration logic
• Full on-chip hardware support of semaphore signaling between ports
• Fully asynchronous operation from either port
• Separate upper-byte and lower-byte controls for multiplexed bus and bus matching compatibility
• LVTTL-compatible, single 3.3V (±0.3V) power supply
• Available in a 100-pin TQFP
• Industrial temperature range (-40°C to +85°C) is available for selected speeds