Renesas 70V9269S7PRFI

Overview

70V9269S7PRFI from IDT (now Renesas) is a high-speed 16K × 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 serves in real-time inter-processor communication, FPGA co-processing buffers, and video frame storage where deterministic latency and port independence are critical.

For engineers reviewing the 70V9269S7PRFI datasheet, 70V9269S7PRFI pinout, 70V9269S7PRFI application, or 70V9269S7PRFI equivalent, this page delivers verified timing modes (flow-through/pipelined), byte-select control behavior, counter-enable functionality, power-down current specs (1.32mW standby), and TQFP-128 package compatibility - all essential for DDR-adjacent buffer design, legacy bus bridging, and deterministic multi-core memory arbitration.

Technical Context

The 70V9269S7PRFI implements fully synchronous dual-port architecture with independent clock inputs (CLKL/CLKR), separate address strobe enables (ADSL/ADSR), and dual chip enables (CE0X/CE1X) per port - enabling depth expansion without external logic. Its pipelined output mode achieves 6.5ns clock-to-data-out with self-timed write, while flow-through mode offers 15ns tCD1 max.

It features dedicated upper-byte (UBX) and lower-byte (LBX) controls, counter enable/reset (CNTENX/CNTRSTX), and FT/PIPEX pins that configure each port independently into flow-through or pipelined output mode - with double-buffered CE signals when FT/PIPE = VIH. A14 is NC, confirming its 16K × 16 (16,384 × 16) organization.

Key Specifications

Pinout & Package

70V9269S7PRFI is housed in a 128-pin TQFP (PKG128) with exposed thermal pad (not electrically connected). All VDD pins require local 3.3V decoupling; all VSS pins must be solidly grounded. Pin 1 location is marked by corner notch or dot; orientation follows JEDEC MO-152 standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-15AXC and AS7C316000B-10JIN, the 70V9269S7PRFI uniquely combines 7.5ns flow-through access, per-port FT/PIPE configuration, integrated address counter, and independent upper/lower byte enables - making it irreplaceable in deterministic streaming, multi-bus bridging, and low-latency inter-processor architectures.

Availability

70V9269S7PRFI is available at Aetrix Electronics and suitable for industrial automation controllers, telecom baseband processing units, and medical imaging subsystems requiring stable component supply across extended product lifecycles.

Supply support for 70V9269S7PRFI 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 interface, and RF power solutions.

The 70V9269S7PRFI belongs to IDT's 70V92xx family of synchronous dual-port SRAMs, designed specifically for deterministic real-time systems requiring concurrent, low-latency memory access between heterogeneous processors or logic blocks.

FAQ

What is the maximum operating frequency of the 70V9269S7PRFI in pipelined mode?

The 70V9269S7PRFI supports 100MHz operation in pipelined output mode, corresponding to a 10ns clock cycle time (tCYC2). This is validated across the full industrial temperature range (–40°C to +85°C) with 3.3V ±0.3V supply. The 6.5ns clock-to-data-out (tCD2) ensures minimal latency for time-critical read operations.

Does the 70V9269S7PRFI support independent timing modes on left and right ports?

Yes, the 70V9269S7PRFI allows independent configuration: FT/PIPEL sets left port mode (VIL = flow-through, VIH = pipelined), and FT/PIPER does the same for the right port. This enables asymmetric system designs - e.g., a microcontroller using flow-through for low-latency command reads while an FPGA uses pipelined for high-throughput data writes.

What is the function of the CNTEN and CNTRST pins on the 70V9269S7PRFI?

CNTENL/CNTENR enable automatic address increment on each clock rise (when pulled low), eliminating external address counters. CNTRSTL/CNTRSTR asynchronously reset the internal address counter to A0. Both functions operate independently per port and remain active in either flow-through or pipelined mode - critical for sequential data streaming applications.

How does the 70V9269S7PRFI handle power management during idle periods?

The 70V9269S7PRFI implements multi-level power down: asserting both CE0X and CE1X high places the port in TTL-level standby (ISB1 ≈ 60mA typ), while driving CE0X/CE1X to CMOS thresholds (e.g., >VDD–0.2V) achieves full standby (ISB3 = 1.32mW typ). This granular control allows independent port sleep states - essential for asymmetric workload systems.

Is A14 used as an address pin on the 70V9269S7PRFI?

No - the datasheet explicitly states "A14X is a NC for IDT70V9269", confirming A14L and A14R are No Connect pins. This verifies the device's 16K × 16 organization (2¹⁴ = 16,384 addresses), distinguishing it from the 32K × 16 70V9279 variant which utilizes A14.