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