Renesas 70V9269L9PRFG8

Overview

70V9269L9PRFG8 from IDT (now part of Renesas) is a high-speed 32K x 16-bit synchronous dual-port static RAM with true dual-ported memory cells enabling simultaneous read/write access to the same address from left and right ports, 10ns pipelined cycle time at 100MHz, LVTTL-compatible 3.3V ±0.3V operation, and industrial temperature range (–40°C to +85°C). It is used in real-time inter-processor communication, FPGA co-processing buffers, and telecom packet buffering where deterministic latency and port independence are critical.

For engineers reviewing the 70V9269L9PRFG8 datasheet, 70V9269L9PRFG8 pinout, 70V9269L9PRFG8 application, or 70V9269L9PRFG8 equivalent, key selection considerations include pipelined vs. flow-through output mode timing, dual chip enable depth expansion capability, separate upper/lower byte controls for bus matching, counter-enable/counter-reset functionality, and low-power standby modes (1.32mW typ.) under CMOS-level input conditions.

Technical Context

This device implements fully synchronous dual-port architecture with independent clock inputs (CLKL/CLKR), register-staged address/data/control paths, and self-timed write logic enabling minimal setup/hold requirements (4ns setup, 1ns hold). Each port features dedicated R/W, CE0/CE1, OE, UB/LB, ADS, CNTEN, and CNTRST signals, allowing autonomous operation without arbitration logic.

The memory supports two configurable output modes via FT/PIPE pin: pipelined (6.5ns clock-to-data, 10ns cycle) for burst throughput, or flow-through (7.5ns max. access, 19ns cycle) for lowest latency. Address counter logic enables auto-incrementing reads/writes without external address generation, and dual chip enables permit seamless depth expansion across multiple devices.

Key Specifications

Pinout & Package

70V9269L9PRFG8 is housed in a 128-pin Thin Quad Flatpack (TQFP) package with exposed thermal pad (RoHS-compliant, green variant available). Pin assignment follows symmetric dual-port layout: left port (L) and right port (R) each have dedicated clocks, chip enables, read/write, output enables, upper/lower byte selects, address strobes, counter controls, and 16-bit I/O buses. A14 is no-connect per datasheet note.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1370D-133AXC and AS7C33128PFSIG, the 70V9269L9PRFG8 uniquely balances 100 MHz pipelined performance, industrial temperature resilience, integrated address counter, and 128-pin TQFP manufacturability - making it optimal for mid-density, latency-sensitive embedded dual-processor systems where ease of integration and feature completeness outweigh raw speed or capacity extremes.

Availability

70V9269L9PRFG8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and embedded DSP applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for 70V9269L9PRFG8 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

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

The 70V9269L9PRFG8 belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for deterministic, low-latency inter-processor communication in real-time embedded systems where concurrent access and predictable timing are non-negotiable.

FAQ

What is the maximum operating frequency of the 70V9269L9PRFG8 in pipelined mode?

The 70V9269L9PRFG8 supports up to 100 MHz operation in pipelined output mode, corresponding to a 10 ns clock cycle time (tCYC2). This specification applies across the full industrial temperature range (–40°C to +85°C) and 3.3 V ±0.3 V supply, as verified in AC Electrical Characteristics Table 11a for the X7 speed grade. The device achieves this using double-buffered control path logic and optimized internal timing.

Does the 70V9269L9PRFG8 support both flow-through and pipelined output modes simultaneously on different ports?

Yes, the 70V9269L9PRFG8 supports independent output mode selection per port via the FT/PIPEL and FT/PIPER pins. When FT/PIPEL = VIL and FT/PIPER = VIH, the left port operates in flow-through mode (7.5 ns access) while the right port runs in pipelined mode (6.5 ns clock-to-data). This enables heterogeneous timing optimization - for example, low-latency command reception on one port and high-throughput data streaming on the other.

How does the address counter function in the 70V9269L9PRFG8, and what signals control it?

The 70V9269L9PRFG8 integrates a programmable address counter per port, controlled by CNTENL/CNTENR (enable) and CNTRSTL/CNTRSTR (reset) signals. When CNTEN = VIL on the rising clock edge, the internal address increments automatically regardless of ADS state. CNTRST = VIL resets the counter to address 0. ADS remains functional to override counter output with external addresses - enabling hybrid sequential/burst access patterns without host CPU involvement.

What is the power consumption profile of the 70V9269L9PRFG8 in standby mode?

In full standby (ISB3), where both ports are disabled with CMOS-level inputs (CE0/CE1 > VDD – 0.2 V), the 70V9269L9PRFG8 draws just 1.32 mW typical (0.4 mA at 3.3 V). This ultra-low power state is achieved through aggressive internal gating and is specified across the industrial temperature range. Standby current rises to 130 mA (ISB2) when one port is active but outputs disabled - useful for rapid wake-up scenarios.

Is A14 connected or unused on the 70V9269L9PRFG8, and why?

A14 is a no-connect (NC) pin on the 70V9269L9PRFG8, as explicitly noted in the datasheet ("A14X is a NC for IDT70V9269"). This reflects its 32K × 16-bit organization (2¹⁵ = 32,768 addresses), requiring only A0–A14 for addressing - but A14 is internally unconnected. The device uses A0–A13 (14 bits) to address 16K locations, and the "32K" designation refers to total bit count (32,768 × 16 = 524,288 bits), not unique word count. Thus A14 serves no functional role and must be left floating or tied to ground per design guidelines.