Renesas 70V9269S15PRFI8

Overview

70V9269S15PRFI8 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. It operates at 3.3V ±0.3V, supports pipelined output mode with 15ns clock-to-data (tCD2), and delivers 100MHz operation in pipelined mode - ideal for real-time inter-processor communication in telecom line cards and packet buffering systems.

For engineers reviewing the 70V9269S15PRFI8 datasheet, 70V9269S15PRFI8 pinout, 70V9269S15PRFI8 application, or 70V9269S15PRFI8 equivalent, key selection criteria include its industrial-grade temperature range (–40°C to +85°C), 128-pin TQFP package, dual chip-enable architecture for seamless depth expansion, and support for both flow-through and pipelined output modes with configurable latency.

Technical Context

This device implements fully synchronous operation on both ports with 4ns setup and 1ns hold times for all control, address, and data inputs. Its internal address counter, enabled via CNTEN and reset via CNTRST, allows burst-mode sequential access without external address generation logic.

The memory features separate upper-byte (UB/UBR) and lower-byte (LB/LBR) controls for multiplexed bus compatibility, and dual chip enables (CE0/CE1 per port) that permit depth expansion without additional decoding logic. Power management includes four standby current modes (ISB1–ISB4), with full CMOS-level standby drawing only 1.0mA typical.

Key Specifications

Pinout & Package

70V9269S15PRFI8 is housed in a 128-pin TQFP package (JEDEC MO-152AC). All VDD pins must be connected to 3.3 V supply; all VSS pins require solid ground connection. Pin 1 is located at top-left corner when marking is upright and notch is oriented upward.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-15AXC and AS7C33256P-15JCIN, the 70V9269S15PRFI8 uniquely combines industrial temperature rating, integrated address counter, and selectable pipelined/flow-through output modes - delivering superior timing flexibility and reduced BOM count in demanding embedded systems.

Availability

70V9269S15PRFI8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and aerospace avionics requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for 70V9269S15PRFI8 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 70V9269S15PRFI8 belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for deterministic, low-latency inter-processor and inter-ASIC data exchange in real-time embedded systems.

FAQ

What is the maximum operating frequency of the 70V9269S15PRFI8 in pipelined mode?

The 70V9269S15PRFI8 supports a clock cycle time of 15 ns maximum in pipelined output mode (tCYC2), corresponding to a guaranteed 66.7 MHz operation. With timing margin, it achieves 100 MHz nominal performance - confirmed by AC electrical characteristics in the datasheet under industrial temperature conditions.

Does the 70V9269S15PRFI8 support simultaneous read and write to the same memory address?

Yes, the 70V9269S15PRFI8 uses true dual-ported memory cells that allow concurrent read and write operations to the exact same memory location - one port reading while the other writes - without data corruption or arbitration delay, a core feature validated in the functional block diagram and truth tables.

What is the function of the FT/PIPE pin on the 70V9269S15PRFI8?

The FT/PIPE pin on the 70V9269S15PRFI8 selects output register behavior: VIH configures pipelined mode (1-cycle latency, tCD2 ≤ 9 ns), while VIL enables flow-through mode (0-cycle latency, tCD1 ≤ 20 ns). This DC-level control allows runtime adaptation to system timing budgets without hardware changes.

How does the address counter in the 70V9269S15PRFI8 operate?

The 70V9269S15PRFI8 integrates a synchronous address counter per port. When ADS is held high (VIH) and CNTEN is low (VIL), the counter advances on each rising clock edge. CNTRST asynchronously resets the counter to address 0 - eliminating need for external address generators in burst-access applications.

Is the 70V9269S15PRFI8 compatible with 5V-tolerant I/O interfaces?

No, the 70V9269S15PRFI8 is strictly LVTTL-compatible and requires a 3.3 V ±0.3 V supply. Its absolute maximum input voltage is VDD + 0.3 V (≤ 3.6 V), and VIH minimum is 2.2 V - it is not 5V-tolerant. Direct connection to 5V logic without level translation will exceed absolute maximum ratings and risk damage.