Renesas 70V9269S7PRFI8

Overview

70V9269S7PRFI8 from IDT (now part of Renesas) is a high-speed 32K x 16-bit synchronous dual-port SRAM 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 interprocessor communication, network packet buffering, and FPGA co-processor data exchange.

For engineers reviewing the 70V9269S7PRFI8 datasheet, 70V9269S7PRFI8 pinout, 70V9269S7PRFI8 application, or 70V9269S7PRFI8 equivalent, key selection considerations include pipelined vs. flow-through output mode timing, port-to-port delay (tCWDD ≤ 35ns), dual chip enable depth expansion capability, and industrial-grade reliability for embedded control systems.

Technical Context

This device implements fully synchronous dual-port architecture with independent clock inputs (CLKL/CLKR), separate address/data/control registers per port, and self-timed write logic enabling minimal cycle time. It supports both pipelined (10ns tCYC2, 6.5ns tCD2) and flow-through (19ns tCYC1, 15ns tCD1) output modes selected via FT/PIPE pin.

The memory includes address counter logic with ADS/CNTEN/CNTRST controls, separate upper-byte (UB/LB) and lower-byte enables for bus-matching, and dual CE0/CE1 per port for flexible power-down and depth expansion without external logic. All inputs meet 4ns setup / 1ns hold timing relative to clock.

Key Specifications

Pinout & Package

70V9269S7PRFI8 is housed in a 128-pin Thin Quad Flatpack (TQFP) package with exposed pad (PKG128), measuring 14 mm × 20 mm × 1.4 mm. All VDD pins require local 3.3V decoupling; all VSS pins must be connected to ground. Pin 1 is marked by a dot or beveled corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-15AXC and AS7C33256PFSIG, the 70V9269S7PRFI8 delivers superior throughput (100 MHz vs. ≤66 MHz), deterministic pipelined latency, and integrated address counter - making it optimal for real-time, clock-synchronized embedded systems requiring maximum bandwidth and minimal software overhead.

Availability

70V9269S7PRFI8 is available at Aetrix Electronics and suitable for network infrastructure, industrial automation, and automotive ADAS applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for 70V9269S7PRFI8 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 70V9269S7PRFI8 belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for real-time interprocessor communication, packet buffering, and FPGA co-processing where deterministic latency and concurrent access are mandatory.

FAQ

What is the maximum operating frequency of the 70V9269S7PRFI8 in pipelined mode?

The 70V9269S7PRFI8 supports up to 100 MHz operation in pipelined output mode, corresponding to a 10 ns clock cycle time (tCYC2). This specification is guaranteed over the full industrial temperature range (–40°C to +85°C) and 3.3V ±0.3V supply, with all AC parameters validated per the official IDT datasheet DSC3743.

Does the 70V9269S7PRFI8 support independent clock domains for left and right ports?

Yes, the 70V9269S7PRFI8 has fully independent clock inputs - CLKL for the left port and CLKR for the right port - enabling true asynchronous operation between two processing domains. Each port maintains its own register set, allowing reliable data exchange across clock boundaries without external synchronization logic.

What is the function of the FT/PIPE pin on the 70V9269S7PRFI8?

The FT/PIPE pin selects between flow-through (VIL) and pipelined (VIH) output modes on each port. In pipelined mode, data appears after one clock cycle (tCD2 = 6.5 ns max), enabling higher throughput (100 MHz); in flow-through mode, data appears combinatorially (tCD1 = 15 ns max), reducing latency for single-cycle reads. The pin is DC-controlled and must remain stable during operation.

How does the address counter feature work on the 70V9269S7PRFI8?

The 70V9269S7PRFI8 includes dedicated counter control signals (CNTENL/R and CNTRSTL/R) that enable automatic address incrementing on each clock cycle when CNTEN is asserted. CNTRST resets the counter to address 0x0000. This offloads address generation from the host processor, ideal for streaming applications like DMA or FIFO management.

Is the 70V9269S7PRFI8 pin-compatible with other members of the IDT70V92xx family?

No - the 70V9269S7PRFI8 is not pin-compatible with IDT70V9279 or IDT70V9289. While all share the same 128-pin TQFP package, the 70V9269 has A14X as No Connect (limiting to 32K×16), whereas 70V9279/9289 use A14 for full 64K/128K addressing. Pin functions and timing differ; migration requires PCB redesign and firmware validation.