IDT7028L

` True Dual-Ported memory cells which allow simultaneous reads of the same memory location
` High-speed access Commercial: 15/20ns (max.)
` Low-power operation IDT7028L Active: 1W (typ.) Standby: 1mW (typ.)
` Dual chip enables allow for depth expansion without external logic
` IDT7028 easily expands data bus width to 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
` Interrupt Flag
` 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
` TTL-compatible, single 5V (±10%) power supply
` Available in a 100-pin TQFP
` Industrial temperature range (40°C to +85°C) is available for selected speeds

The IDT7028L is a high-speed 64K x 16 Dual-Port Static RAM. The IDT7028 is designed to be used as a stand-alone 1024K-bit Dual-Port RAM or as a combination MASTER/SLAVE Dual-Port RAM for 32-bit-ormore word systems. Using the IDT MASTER/SLAVE Dual-Port RAM approach in 32-bit or wider memory system applications results in fullspeed, error-free operation without the need for additional discrete logic.

This IDT7028L 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 (CE0 and CE1) permit 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 1W of power.

The IDT7028L is packaged in a 100-pin Thin Quad Flatpack (TQFP).