The IDT71V632 is a 3.3V high-speed SRAM organized as 64K x 32 with full support of the Pentium and PowerPC processor interfaces. The pipelined burst architecture provides cost-effective 3-1-1-1 secondary cache performance for processors up to 117MHz. The IDT71V632 SRAM contains write, data, address, and control registers. Internal logic allows the SRAM to generate a self-timed write based upon a decision which can be left until the extreme end of the write cycle. The burst mode feature offers the highest level of performance to the system designer, as the IDT71V632 can provide four cycles of data for a single address presented to the SRAM. An internal burst address counter accepts the first cycle address from the processor, initiating the access sequence. The first cycle of output data will be pipelined for one cycle before it is available on the next rising clock edge. If burst mode operation is selected (ADV=LOW), the subsequent three cycles of output data will be available to the user on the next three rising clock edges. The order of these three addresses will be defined by the internal burst counter and the LBO input pin. The IDT71V632 SRAM utilizes IDT's high-performance, high-volume 3.3V CMOS process, and is packaged in a JEDEC Standard 14mm x 20mm 100-pin thin plastic quad flatpack (TQFP) for optimum board density in both desktop and notebook applications.
64K x 32 memory configuration
Supports high system speed:
Commercial: - A4 4.5ns clock access time (117 MHz)
Commercial and Industrial: - 5 5ns clock access time (100 MHz) - 6 6ns clock access time (83 MHz) - 7 7ns clock access time (66 MHz)
Single-cycle deselect functionality
LBO input selects interleaved or linear burst mode
Self-timed write cycle with global write control (GW), byte write enable (BWE), and byte writes (BWx)
Power down controlled by ZZ input
Operates with a single 3.3V power supply (+10/-5%)
Packaged in a JEDEC Standard 100-pin rectangular plastic thin quad flatpack (TQFP).