709079S15PFI

Memory IC Overview

The Renesas Electronics Corporation 709079S15PFI is a high-speed 32K x 8-bit synchronous dual-port static RAM. It features true dual-ported memory cells allowing simultaneous access to the same location from both ports. The device operates with a maximum clock-to-data access time of 15 ns and supports a 35 ns cycle time in flow-through mode or a 25 ns cycle time in pipelined mode. It utilizes a single 5V (±10%) TTL-compatible power supply and is available in a 100-pin Thin Quad Flatpack (TQFP) package.

Memory IC Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to any address from both ports.
• Configurable output modes selectable via the FT/PIPE pin, supporting either flow-through or pipelined data delivery on either port.
• Integrated address counter with enable and reset functions for automated sequential addressing without external logic.
• Dual chip enables per port facilitating depth expansion configurations without requiring additional decoding circuitry.

Memory IC Applications

• High-speed burst data transfer applications requiring unidirectional or bidirectional data flow
• Systems utilizing self-timed write cycles for fast interleaved memory operations
• Depth expansion memory banks controlled by multiple chip enables

Memory IC Procurement Notes

Verify component authenticity through authorized channels as this part originates from Integrated Device Technology, now part of Renesas Electronics. Confirm that the specific ordering suffix matches the required speed grade and temperature range. Ensure compatibility with existing system voltage levels and interface requirements before procurement.

Memory IC Selection Notes

Select this component when simultaneous read/write access to shared memory locations is required. Choose the S variant for standard power consumption or L for low-power standby needs. Verify that the 15 ns speed grade meets the system timing constraints for both flow-through and pipelined operation modes.

Memory IC Part Context

This device belongs to the IDT709089/79 family of synchronous dual-port SRAMs. It shares architectural similarities with the 64K x 8 variant but offers a 32K x 8 organization. The product line supports both commercial and industrial temperature ranges, providing flexibility for various embedded memory applications.

Memory IC Replacement Considerations

IDT709079S15PF serves as a direct equivalent part number for this component. Verify pinout and electrical specifications against current datasheets to ensure functional compatibility during replacement.

Memory IC FAQ

How does the FT/PIPE pin affect data output?

The FT/PIPE pin selects between flow-through and pipelined output modes. In flow-through mode, data appears immediately after the clock edge. In pipelined mode, data is delayed by one clock cycle, allowing for higher frequency operation.

What is the function of the CNTEN and CNTRST pins?

CNTEN enables the internal address counter to advance automatically on each clock cycle. CNTRST resets the internal address counter to zero, allowing the device to restart sequential access from the beginning of the memory array.