Renesas 70V9269S9PRFI8

Overview

70V9269S9PRFI8 from IDT (now part of Renesas) is a high-speed 32K × 16-bit synchronous dual-port SRAM with true dual-ported memory cells enabling simultaneous read/write access to the same address from independent left and right ports, 10 ns pipelined cycle time at 100 MHz, LVTTL-compatible 3.3 V ±0.3 V operation, and industrial temperature range (–40°C to +85°C). It serves as on-chip buffer memory in real-time digital signal processors, network packet switches, and FPGA-based communication controllers.

For engineers reviewing the 70V9269S9PRFI8 datasheet, 70V9269S9PRFI8 pinout, 70V9269S9PRFI8 application, or 70V9269S9PRFI8 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 address auto-increment functionality, and low-power standby current (1.32 mW typ.) under CMOS-level input conditions.

Technical Context

This device implements fully synchronous dual-port architecture with registered address, data, and control inputs-requiring only 4 ns setup and 1 ns hold relative to clock edges. Both ports support independent pipelined (tCYC2 = 10 ns) or flow-through (tCYC1 = 19 ns) output modes selected via FT/PIPE pin, with self-timed write enabling minimal cycle time.

It integrates dual address counters with independent CNTEN/CNTRST per port, ADS-controlled external address latching, and dual CE0/CE1 enables allowing power-down of either port without affecting the other. All I/Os are LVTTL-compatible, and the memory array uses true dual-ported SRAM cells-not pseudo-dual-port or multiplexed architectures.

Key Specifications

Pinout & Package

70V9269S9PRFI8 is housed in a 128-pin Thin Quad Flatpack (TQFP) package with exposed thermal pad (not electrically connected), 0.4 mm lead pitch, and JEDEC-standard footprint. All VDD pins must be decoupled locally; all VSS pins require low-inductance ground connections.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-100AXC and AS7C33256B-10JCN, the 70V9269S9PRFI8 uniquely combines full 32K × 16 depth, dual independent address counters, pipelined+flow-through mode flexibility, and industrial temperature qualification-making it irreplaceable in high-reliability, high-throughput synchronous designs.

Availability

70V9269S9PRFI8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and FPGA-based test equipment requiring stable component supply across extended product lifecycles.

Supply support for 70V9269S9PRFI8 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 70V9269S9PRFI8 belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for real-time, low-latency inter-processor communication and packet buffering in carrier-grade networking and deterministic control systems.

FAQ

What is the maximum operating frequency of the 70V9269S9PRFI8 in pipelined mode?

The 70V9269S9PRFI8 supports up to 100 MHz operation in pipelined output mode, corresponding to a 10 ns clock cycle time (tCYC2). This is guaranteed over the full industrial temperature range (–40°C to +85°C) and 3.3 V ±0.3 V supply, with all timing parameters-including tCD2 (clock-to-data valid) at 6.5 ns max-specified under these conditions.

Does the 70V9269S9PRFI8 support independent clock domains on left and right ports?

Yes, the 70V9269S9PRFI8 has fully independent CLKL and CLKR inputs, allowing asynchronous clocking of left and right ports. Each port operates synchronously within its own domain, with no requirement for phase alignment or frequency matching-enabling seamless bridging between disparate clock domains in FPGA-to-ASIC or processor-to-peripheral interfaces.

How does the address counter function work on the 70V9269S9PRFI8?

The 70V9269S9PRFI8 provides independent CNTENL/CNTRSTL and CNTENR/CNTRSTR pins per port. When CNTEN = VIL on the rising clock edge, the internal address counter increments automatically, eliminating the need for external address sequencing logic. CNTRST resets the counter to address 0, and ADS remains inactive during counter operation-verified in Truth Table II and Figure 3743 tbl 03.

Is A14 connected or unused on the 70V9269S9PRFI8?

A14 is a No Connect (NC) pin on the 70V9269S9PRFI8, as explicitly noted in the datasheet footnote: "A14X is a NC for IDT70V9269." The device implements 32K × 16 organization (2¹⁵ = 32,768 addresses), so only A0–A13 are functional address inputs; A14L and A14R must be left unconnected and not tied to any voltage.

What power-saving modes does the 70V9269S9PRFI8 support?

The 70V9269S9PRFI8 offers four distinct standby modes: ISB1 (both ports TTL-disabled, 50 mA typ.), ISB2 (one port active, 110 mA typ.), ISB3 (full CMOS standby, 0.4 mA typ. = 1.32 mW), and ISB4 (one port CMOS-standby, 80 mA typ.). ISB3 is enabled when both CE0 and CE1 exceed VDD − 0.2 V and all inputs are at valid CMOS levels-ideal for energy-constrained industrial gateways.