Renesas 709079S15PF

Overview

IDT709079S15PF from Integrated Device Technology is a high-speed 32K × 8-bit synchronous dual-port static RAM with true dual-ported memory cells enabling simultaneous access to the same address from left and right ports, 15 ns pipelined clock-to-data access (tCD2), 25 ns flow-through cycle time (tCYC1), and industrial temperature support (–40°C to +85°C). It serves in real-time embedded systems requiring concurrent read/write operations across independent bus domains, such as digital signal processors interfacing with FPGA-based peripherals.

For engineers reviewing the IDT709079S15PF datasheet, IDT709079S15PF pinout, IDT709079S15PF application, or IDT709079S15PF equivalent, key selection considerations include its 100-pin TQFP package, dual chip enable architecture for depth expansion, TTL-compatible 5V ±10% supply, synchronous pipelined/flow-through output mode selection via FT/PIPE pin, and integrated address counter with enable/reset functionality.

Technical Context

The IDT709079S15PF implements fully synchronous operation on both ports with 4 ns setup and 1 ns hold times for all control, address, and data inputs. Its internal architecture includes dedicated input registers for address, data, and control signals, enabling minimal timing latitude and short system cycle times.

It supports two distinct output modes-flow-through (FT/PIPE = VIL) and pipelined (FT/PIPE = VIH)-with separate timing specifications: pipelined mode achieves 15 ns cycle time (66.7 MHz) and 9 ns clock-to-data (tCD2), while flow-through mode delivers 25 ns cycle time (tCYC1) and 30 ns tCD1. The device integrates an address counter with CNTEN/CNTRST controls and dual chip enables (CE0/CE1 per port) for seamless depth expansion without external logic.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, PN100 footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous dual-port SRAM applications.

Compared with CY7C028V-15AXC and IDT70V9279S15PF, the IDT709079S15PF offers native 5 V operation without level shifters or dual supplies, making it optimal for legacy 5 V bus architectures where voltage translation adds cost and timing uncertainty.

Availability

IDT709079S15PF is available at Aetrix Electronics and suitable for telecom infrastructure, test equipment, industrial motion control, and FPGA co-processing applications requiring stable component supply, long-term lifecycle assurance, and industrial-grade reliability.

Supply support for IDT709079S15PF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and real-time interconnect solutions for communications, computing, and industrial markets.

IDT709079S15PF belongs to IDT's synchronous dual-port SRAM product line, engineered for deterministic, low-latency memory sharing between asynchronous processing domains - particularly targeting DSP-FPGA interfaces, telecom buffering, and real-time control systems.

FAQ

What is the memory capacity and organization of the IDT709079S15PF?

The IDT709079S15PF provides 32K × 8-bit (256 Kbit) of synchronous dual-port SRAM. Addressing uses A0–A14 (15 address lines); A15 is designated No Connect per the datasheet for this variant. Each port has independent 8-bit bidirectional I/O (I/O0–I/O7), supporting concurrent access without contention.

Does the IDT709079S15PF support both pipelined and flow-through output modes?

Yes, the IDT709079S15PF supports both modes via the FT/PIPE pin on each port. When FT/PIPE = VIH, the port operates in pipelined mode (15 ns cycle time, 9 ns clock-to-data). When FT/PIPE = VIL, it operates in flow-through mode (25 ns cycle time, 30 ns clock-to-data). Modes can be set independently per port.

What is the operating temperature range and supply voltage for the IDT709079S15PF?

IDT709079S15PF is rated for industrial temperature operation from –40°C to +85°C. It requires a single 5.0 V ±10% supply (4.5 V to 5.5 V), with multiple VCC and GND pins distributed across the 100-pin TQFP package to ensure stable power delivery and noise immunity.

How does the dual chip enable (CE0/CE1) architecture benefit system design?

The dual CE per port (CE0L/CE1L and CE0R/CE1R) enables independent port power-down: setting CE0 = VIH or CE1 = VIL disables that port and reduces standby power to 5 mW (typ.). For depth expansion, multiple IDT709079S15PF devices can be cascaded using CE logic without external decoding, simplifying memory bank design.

Can the IDT709079S15PF perform simultaneous read and write operations on the same memory location?

Yes, the IDT709079S15PF uses true dual-ported memory cells, allowing simultaneous read from one port and write to the same address on the other port. This capability is fundamental to its role in real-time systems like DSP-FPGA interfaces, where deterministic data handoff is critical without arbitration overhead.