Renesas 70V9079S9PF8

Overview

70V9079S9PF8 from Integrated Device Technology (IDT) is a high-speed 32K × 8-bit synchronous dual-port static RAM with true dual-ported memory cells enabling simultaneous read/write access to the same address from independent left and right ports, 12ns max clock-to-data access in pipelined mode, LVTTL-compatible 3.3V ±0.3V operation, and integrated address counter with enable/reset-used in real-time DSP co-processing buffers and FPGA-based protocol bridging.

For engineers reviewing the 70V9079S9PF8 datasheet, 70V9079S9PF8 pinout, 70V9079S9PF8 application, or 70V9079S9PF8 equivalent, key selection criteria include pipelined vs. flow-through output timing modes, dual-port depth expansion capability via CE0/CE1 control, industrial temperature support (–40°C to +85°C), and low-power standby current of 0.4mA (typ.) under CMOS-level inputs.

Technical Context

This device implements fully synchronous dual-port architecture with registered address, data, and control inputs on both ports-ensuring 4ns setup and 1ns hold times relative to rising clock edges. Each port features independent clock (CLKL/CLKR), chip enables (CE0L/CE1L and CE0R/CE1R), and output enable (OEL/OER), with asynchronous OE allowing flexible bus interfacing.

The integrated address counter supports automatic sequential addressing via CNTEN/CNTRST signals, and FT/PIPE pin configures per-port output latency: pipelined mode delivers 7.5ns clock-to-data (commercial) or 12ns (industrial), while flow-through mode provides immediate output with longer cycle time. A15 is NC for 70V9079, confirming its 32K × 8 (not 64K × 8) density.

Key Specifications

Pinout & Package

70V9079S9PF8 is housed in a 100-pin Thin Quad Flatpack (TQFP) package with exposed pad (non-thermal), body dimensions 14mm × 14mm × 1.4mm. All VDD pins require local 3.3V decoupling; all VSS pins must be connected to ground. Pin 1 is located at top-left corner (marking dot adjacent).

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 AS7C33256P-12JIN, 70V9079S9PF8 uniquely combines industrial temperature support, integrated address counter, dual chip enables per port, and 100-pin TQFP packaging-making it optimal for new designs requiring compact, low-power, high-reliability dual-port buffering.

Availability

70V9079S9PF8 is available at Aetrix Electronics and suitable for real-time DSP co-processing buffers, FPGA-based protocol bridges, and multi-channel data acquisition controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 70V9079S9PF8 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 sensor signal conditioning ICs for communications, computing, and industrial markets.

The IDT70V90xx family was designed specifically for high-performance, low-latency dual-port memory applications in FPGA, DSP, and ASIC-based systems requiring deterministic, simultaneous access to shared data structures.

FAQ

What is the memory density and organization of the 70V9079S9PF8?

The 70V9079S9PF8 is a 32K × 8-bit synchronous dual-port SRAM, meaning it provides 32,768 words of 8-bit data. Its address range spans A0–A14; A15 is designated No Connect per the datasheet, confirming the 32K (not 64K) capacity. This organization supports byte-wide data transfers on both left and right ports independently, ideal for 8-bit microcontroller or peripheral interfacing.

Does the 70V9079S9PF8 support industrial temperature operation?

Yes, the 70V9079S9PF8 is rated for industrial temperature operation from –40°C to +85°C. This is explicitly confirmed in the "Recommended Operating Temperature and Supply Voltage" table (Table 4), where the Industrial grade lists this exact range. It is not limited to commercial grade (0°C to +70°C), making it suitable for harsh-environment applications including factory automation and outdoor infrastructure.

How does the FT/PIPE pin affect timing performance of the 70V9079S9PF8?

The FT/PIPE pin configures per-port output latency: when driven LOW, the 70V9079S9PF8 operates in flow-through mode (tCD1 = 25ns max, tCYC1 = 30ns min for industrial grade); when HIGH, it uses pipelined mode (tCD2 = 12ns max, tCYC2 = 20ns min). The mode is set statically per port-FT/PIPEL controls left port, FT/PIPER controls right port-enabling mixed-mode operation if needed.

Can the 70V9079S9PF8 perform depth expansion without external logic?

Yes, the 70V9079S9PF8 supports depth expansion using its dual chip enables (CE0X and CE1X per port) without additional logic. As shown in Figure 4 of the datasheet, cascading multiple devices requires only routing A15 (or higher) to CE0/CE1 of downstream units. This native capability eliminates address decoding ICs and reduces PCB complexity, especially in memory-intensive FPGA or DSP subsystems.

What is the standby current consumption of the 70V9079S9PF8 under full power-down conditions?

Under full standby conditions-where both ports have CMOS-level inputs (CE0X > VDD − 0.2V and CE1X < 0.2V), and no signals toggle-the 70V9079S9PF8 draws just 0.4mA typical (ISB3, Table 9b). This ultra-low quiescent current is critical for battery-backed systems or energy-harvesting applications where minimizing leakage during idle periods directly extends operational lifetime.