Renesas 70V9289L9PFGI

Overview

70V9289L9PFGI from IDT (Integrated Device Technology) is a high-speed, 3.3V, 64K × 18-bit synchronous dual-port static RAM with pipelined and flow-through output modes, 9ns max clock-to-data access in pipelined mode, industrial temperature range (–40°C to +85°C), and 128-pin TQFP packaging. It enables simultaneous read/write access from independent left and right ports in real-time digital signal processing systems.

For engineers reviewing the 70V9289L9PFGI datasheet, 70V9289L9PFGI pinout, 70V9289L9PFGI application, or 70V9289L9PFGI equivalent, key selection criteria include synchronous dual-port timing compliance, 3.3V LVTTL compatibility, industrial-grade reliability, depth/width expansion support via dual chip enables, and pipelined vs. flow-through output mode configuration.

Technical Context

The 70V9289L9PFGI implements fully synchronous operation on both ports with registered address, data, and control inputs-requiring only 4ns setup and 0ns hold time relative to CLK. Its self-timed write architecture decouples internal write pulse generation from clock edge timing, enabling fast cycle times without external timing constraints.

It supports two distinct output architectures: pipelined (12ns cycle time, 83MHz operation, 7.5ns clock-to-data) and flow-through (22ns cycle time, 45MHz operation, 18ns clock-to-data), selected per port via dedicated FT/PIPE pins. Address counter logic with CNTEN/CNTRST enables burst-mode sequential addressing without external increment logic.

Key Specifications

Pinout & Package

70V9289L9PFGI is housed in a 128-pin Thin Quad Flatpack (TQFP) with 0.4mm pitch, body size 14mm × 20mm × 1.4mm. All VDD (pins 20, 48, 70, 91, 100, 122) and VSS (pins 19, 47, 69, 90, 99, 121) must be properly decoupled. NC pins (e.g., 1–4, 15, 31–34, 65–68, 92–95, 115–118) are not internally connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-100BZXI and IS61WV6418BLL-10MLI, the 70V9289L9PFGI uniquely combines industrial temperature rating, per-port output mode selection, integrated address counter, and synchronous timing with minimal setup/hold-making it optimal for deterministic embedded systems where firmware overhead and PCB area are critical constraints.

Availability

70V9289L9PFGI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, avionics data acquisition, and real-time DSP subsystems requiring stable component supply, long-term lifecycle support, and guaranteed industrial-grade performance.

Supply support for 70V9289L9PFGI 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

Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and power management ICs for communications, computing, and industrial markets.

The 70V9289L9PFGI belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered for deterministic, low-latency shared-memory applications in telecom infrastructure, test equipment, and real-time embedded systems.

FAQ

What is the maximum operating frequency of the 70V9289L9PFGI in pipelined mode?

The 70V9289L9PFGI supports up to 67MHz operation in pipelined mode, derived from its 15ns maximum clock cycle time (tCYC2). This is verified under industrial conditions (–40°C to +85°C) with 3.3V ±0.3V supply. The device achieves 7.5ns clock-to-data (tCD2) at this speed, making it suitable for high-bandwidth buffering in line-rate packet processing applications.

Does the 70V9289L9PFGI support independent output modes on left and right ports?

Yes, the 70V9289L9PFGI provides independent output mode control via FT/PIPEL (left port) and FT/PIPER (right port) pins. Each can be configured for pipelined (VIH) or flow-through (VIL) operation, allowing asymmetric timing behavior-for example, pipelined read on the right port for low-latency host access while using flow-through on the left port for predictable FPGA write timing.

How does the address counter function in the 70V9289L9PFGI, and what signals control it?

The 70V9289L9PFGI integrates a hardware address counter per port controlled by CNTENL/CNTENR (enable) and CNTRSTL/CNTRSTR (reset) inputs. When CNTEN = VIL on the rising CLK edge, the counter advances automatically. ADSL/ADSR loads external addresses. This eliminates software-based address incrementing, reducing CPU load in burst-oriented applications like video frame buffering or sensor data streaming.

What is the power consumption profile of the 70V9289L9PFGI in full standby mode?

In full standby mode (both ports disabled with CMOS-level inputs: CE0/CE1 > VDD–0.2V, all inputs at rail), the 70V9289L9PFGI draws 0.4mA typical (1.3mW at 3.3V), with a maximum of 2mA. This ultra-low quiescent current is enabled by dual chip enables and internal power-gating-critical for battery-backed or energy-sensitive industrial systems where memory must retain state with minimal leakage.

Can the 70V9289L9PFGI be used for depth expansion, and how is it implemented?

Yes, the 70V9289L9PFGI supports depth expansion using its dual chip enables (CE0 and CE1 per port). For two-device expansion, A16 selects bank: one device uses CE0L = A16, CE1L = VDD; the other uses CE0L = /A16, CE1L = VDD. No external logic is needed-this is confirmed in the datasheet's Figure 4 and Truth Table I, enabling scalable memory arrays in telecom and test equipment without added gate count.