IDT71V321S Datasheet | Integrated Device Technology

HIGH-SPEED 3.3V 2K x 8 DUAL-PORT STATIC RAM WITH INTERRUPT Integrated Device Technology, Inc. IDT71V321S/L Features : - High-speed access - mercial: 25/35/55ns (max.) - Low-power operation - IDT71V321S - Active: 250m W (typ.) - Standby: 3.3m W (typ.) - IDT71V321L - Active: 250m W (typ.) - Standby: 660µW (typ.) - Two INT flags for port-to-port munications - On-chip port arbitration logic - BUSY output flag - Fully asynchronous operation from either port - Battery backup operation- 2V data retention - TTL-patible, single 3.3V ± 0.3V power supply - Available in popular plastic packages DESCRIPTION: The IDT71V321 is a high-speed 2K x 8 Dual-Port Static RAMs with internal interrupt logic for interprocessor munications. The IDT71V321 is designed to be used as a stand-alone 8-bit Dual-Port RAM. The 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 CE, permits 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 250m W of power. Low-power (L) versions offer battery backup data retention capability, with each Dual-Port typically consuming 200µW from a 2V battery. The IDT71V321 devices are packaged in a 52-pin PLCC and a 64-pin TQFP (thin plastic quad flatpack). FUNCTIONAL BLOCK DIAGRAM R/ R/ I/O0L- I/O7L I/O Control I/O Control I/O0R-I/O7R BUSYL (1,2)...