Renesas 709079S12PFI8

Overview

IDT709079S12PFI8 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 - used in real-time DSP co-processing and high-speed buffer applications.

For engineers reviewing the IDT709079S12PFI8 datasheet, IDT709079S12PFI8 pinout, IDT709079S12PFI8 application, or IDT709079S12PFI8 equivalent, key selection criteria include pipelined vs. flow-through output timing, dual chip enable depth expansion capability, counter-enabled burst addressing, synchronous dual-clock domain operation, and industrial-grade power-down current (1mA standby).

Technical Context

This device implements fully synchronous dual-port architecture with independent clock inputs (CLKL/CLKR), registered address/data/control inputs, and self-timed write cycles. Both ports support pipelined (9ns tCD2) or flow-through (25ns tCD1) output modes selected per port via FT/PIPE pins.

It integrates on-chip address counters with CNTEN/CNTRST control per port, enabling automatic sequential addressing during burst transfers. Dual CE0/CE1 enables allow depth expansion without external logic, while asynchronous OE supports mixed synchronous/asynchronous bus interfacing.

Key Specifications

Pinout & Package

100-pin Thin Quad Flatpack (TQFP), PN100 package. Body dimensions: 14mm × 14mm × 1.4mm. All VCC and GND pins require proper decoupling per datasheet layout guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT709079S12PFI8, CY7C028V-15AC offers wider data bus but mandates 3.3V operation, while R1EX24032AS0C-12 matches voltage and density but omits pipelined timing and on-chip counter - making IDT709079S12PFI8 uniquely suited for high-efficiency burst-oriented industrial control.

Availability

IDT709079S12PFI8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motor drives, real-time DSP systems, and embedded control applications requiring stable component supply and long-term industrial temperature support.

Supply support for IDT709079S12PFI8 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.

IDT709079S12PFI8 belongs to the IDT709089/79 family of synchronous dual-port SRAMs designed specifically for high-reliability, low-latency inter-processor communication in industrial and telecom equipment.

FAQ

What is the memory capacity and organization of IDT709079S12PFI8?

IDT709079S12PFI8 provides 32K × 8-bit (256Kb) of true dual-port static RAM. Its address space uses A0–A14 (15 bits), with A15 designated as No Connect (NC) per the IDT709079 datasheet - confirming it is the 32K variant, distinct from the 64K IDT709089. This configuration supports byte-wide data transfers on both left and right ports simultaneously.

Does IDT709079S12PFI8 support both pipelined and flow-through output modes?

Yes, IDT709079S12PFI8 supports both modes per port via dedicated FT/PIPEL and FT/PIPER inputs. When driven low (VIL), the port operates in flow-through mode (25ns tCD1 max); when high (VIH), it enters pipelined mode (12ns tCD2 max). The datasheet confirms this behavior applies independently to each port, enabling mixed-mode system architectures.

What is the industrial temperature rating and power consumption of IDT709079S12PFI8?

IDT709079S12PFI8 is rated for –40°C to +85°C operation and consumes 1mA typical standby current (ISB3) with both ports in full CMOS standby. Active power is 950mW typical (950mW = 190mA @ 5V), verified across the industrial temperature range - making it suitable for fanless industrial enclosures and outdoor telecom cabinets.

How does the dual chip enable scheme work on IDT709079S12PFI8?

IDT709079S12PFI8 uses two independent chip enables per port (CE0L/CE1L and CE0R/CE1R). Activation requires CE0X = VIL and CE1X = VIH (X = L/R). This dual-enable logic allows depth expansion: one device's CE0 can be tied to a bank-select signal while CE1 remains high, enabling/disabling entire memory banks without external gating logic.

Is IDT709079S12PFI8 compatible with 5V TTL logic families?

Yes, IDT709079S12PFI8 is fully TTL-compatible with 5V ±10% supply (4.5V–5.5V), VIH = 2.2V min, VIL = 0.8V max, and VOH = 2.4V min at –4mA. Its input thresholds and output drive meet standard TTL specifications, allowing direct interface with legacy 5V microcontrollers, FPGAs, and ASICs without level shifters.