IDT7027L

HIGH-SPEED 32K x 16 DUAL-PORT STATIC RAM IDT7027S/L Features ◆ True Dual-Ported memory cells which allow simultaneous access of the same memory location ◆ High-speed access – Commercial: 15/20/25/35/55ns (max.) – Industrial: 20/25ns (max.) ◆ Low-power operation – IDT7027S Active: 750mW (typ.) Standby: 5mW (typ.) – IDT7027L Active: 750mW (typ.) Standby: 1mW (typ.) ◆ Separate upper-byte and lower-byte control for bus matching capability. ◆ Dual chip enables allow for depth expansion without external logic Functional Block Diagram R/WL UBL CE0L CE1L OEL LBL ◆ IDT7027 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 ◆ TTL-compatible, single...