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Features

◆ 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

– IDT70V28L

Active: 440mW (typ.)

Standby: 660μW (typ.)

◆ Dual chip enables allow for depth expansion without

external logic

◆ IDT70V28 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

◆ 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

◆ Green parts available, see ordering information