Renesas 709079L12PFI

Overview

IDT709079L12PFI from Integrated Device Technology is a 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, 12ns max clock-to-data access in pipelined mode, industrial temperature range (–40°C to +85°C), and TTL-compatible 5V ±10% supply - deployed in high-throughput packet buffering and real-time DSP co-processing systems.

For engineers reviewing the IDT709079L12PFI datasheet, IDT709079L12PFI pinout, IDT709079L12PFI application, or IDT709079L12PFI equivalent, key selection criteria include pipelined vs. flow-through output mode configuration via FT/PIPE pin, dual chip enable architecture for depth expansion without external logic, synchronous 4ns setup / 1ns hold timing, and low-power standby current of 1mA (typ.) in L-grade operation.

Technical Context

The IDT709079L12PFI implements fully synchronous dual-port operation with independent clock inputs (CLKL/CLKR), registered address/data/control inputs on both ports, and self-timed write cycles enabling minimal cycle time. Its internal address counter supports automatic incrementing via CNTEN and reset via CNTRST, decoupled from CE0/CE1 states.

It supports two output modes: pipelined (FT/PIPE = VIH, 9ns tCD2, 20ns tCYC2) and flow-through (FT/PIPE = VIL, 25ns tCD1, 30ns tCYC1), with asynchronous OE per port and independent chip enables (CE0X/CE1X) enabling selective port power-down to 1mA standby. A15 is NC, confirming 32K × 8 (256Kb) density.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flatpack (TQFP), PN100, 14mm × 14mm × 1.4mm body, lead-free and RoHS-compliant (Green part).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-15AC and IDT70V9079L12PFI, the IDT709079L12PFI uniquely delivers 5V-only operation, industrial temperature support, and proven integration in legacy telecom and industrial control systems - making it the optimal choice when maintaining compatibility with existing 5V synchronous bus designs.

Availability

IDT709079L12PFI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and avionics sensor hubs requiring stable component supply, long-lifecycle assurance, and guaranteed industrial temperature performance.

Supply support for IDT709079L12PFI 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, and RF solutions for communications and computing markets.

The IDT709079L12PFI belongs to IDT's synchronous dual-port SRAM product line, engineered for deterministic, low-latency inter-processor communication in real-time embedded systems where concurrent access and industrial reliability are mandatory.

FAQ

What is the memory density and organization of the IDT709079L12PFI?

The IDT709079L12PFI is a 32K × 8-bit synchronous dual-port static RAM, providing 256Kb total capacity. A15 is designated NC (no connect) per datasheet Note 1, confirming the 32K addressing limit. It supports independent 8-bit data paths on left and right ports, enabling true concurrent access without arbitration overhead.

Does the IDT709079L12PFI support both pipelined and flow-through output modes?

Yes, the IDT709079L12PFI supports both modes via the FT/PIPE pin on each port. When FT/PIPE = VIH, it operates in pipelined mode with 12ns max clock-to-data (tCD2) and 20ns min cycle time (tCYC2). When FT/PIPE = VIL, it uses flow-through mode with 25ns tCD1 and 30ns tCYC1 - allowing system designers to optimize for latency or determinism.

What is the standby current specification for the IDT709079L12PFI?

The IDT709079L12PFI "L" grade delivers 1mA typical full standby current (ISB3) when both ports are disabled with CMOS-level inputs (CE0/CE1 > VCC − 0.2V). This ultra-low standby power is achieved through optimized CMOS design and is validated across the full –40°C to +85°C industrial temperature range.

How does the dual chip enable architecture simplify memory expansion with the IDT709079L12PFI?

The IDT709079L12PFI provides two independent chip enables per port (CE0X and CE1X). Per Truth Table I, asserting CE0X = VIL and CE1X = VIH activates the port; asserting both VIH places it in 1mA standby. This allows depth expansion of multiple devices using only CE logic - no external address decoding or gating is required.

Is the IDT709079L12PFI qualified for industrial temperature operation?

Yes, the "I" suffix in IDT709079L12PFI explicitly denotes industrial temperature qualification. It is fully specified and tested from –40°C to +85°C, including all AC timing parameters (e.g., 12ns tCD2 max), DC characteristics, and power consumption - meeting requirements for deployment in harsh-environment industrial and transportation systems.