Renesas 70V9099L9PFG

Overview

70V9099L9PFG from Renesas Electronics (formerly IDT) is a high-speed, synchronous, pipelined dual-port static RAM with true dual-ported 128K × 8-bit organization, 3.3V single-supply operation, 9 ns clock-to-data access in pipelined mode, and industrial-grade temperature support (–40°C to +85°C). It enables simultaneous read/write access from independent left and right ports in telecom switching fabric and real-time DSP buffer applications.

For engineers reviewing the 70V9099L9PFG datasheet, 70V9099L9PFG pinout, 70V9099L9PFG application, or 70V9099L9PFG equivalent, key selection criteria include pipelined vs. flow-through output timing, dual chip-enable depth expansion capability, address counter control for burst transfers, LVTTL-compatible I/O, and TQFP-100 package thermal and layout constraints.

Technical Context

The 70V9099L9PFG implements fully synchronous dual-port architecture with registered address, data, and control inputs on both ports-requiring only 4 ns setup and 1 ns hold relative to CLK. Its self-timed internal write pulse decouples write completion from clock edge timing, enabling minimal cycle time.

Each port supports independent configuration of pipelined (FT/PIPE = VIH) or flow-through (FT/PIPE = VIL) output modes, with pipelined mode delivering 9 ns tCD2 and 15 ns tCYC2, while flow-through yields 20 ns tCD1 and 25 ns tCYC1. Dual CE0/CE1 enables per-port power-down and depth expansion without external logic.

Key Specifications

Pinout & Package

70V9099L9PFG is housed in a 100-pin Thin Quad Flatpack (TQFP, package code PNG100) with exposed pad thermal design and 0.5 mm pitch. All VDD pins must be connected to 3.3 V supply; all VSS pins tied to ground. Package body measures 14 mm × 14 mm × 1.4 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-15AXC and AS7C3128B-12JIN, the 70V9099L9PFG uniquely delivers pipelined 9 ns access with integrated address counter and dual CE-based power management-making it optimal for deterministic, high-throughput, low-power dual-port memory tasks.

Availability

70V9099L9PFG is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, and test equipment applications requiring stable component supply, long-term lifecycle assurance, and industrial-temperature qualification.

Supply support for 70V9099L9PFG 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

Renesas Electronics Corporation is a global semiconductor leader formed from the merger of IDT and Renesas, specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and communications markets.

The 70V9099L9PFG belongs to Renesas' legacy IDT dual-port SRAM product line, engineered specifically for high-speed, low-latency, deterministic memory interfacing in real-time embedded systems with strict timing budgets.

FAQ

What is the maximum operating frequency of the 70V9099L9PFG in pipelined mode?

The 70V9099L9PFG supports up to 66 MHz operation in pipelined mode, derived from its 15 ns maximum clock cycle time (tCYC2). This frequency is guaranteed across the full industrial temperature range (–40°C to +85°C) and 3.3 V ± 0.3 V supply, making the 70V9099L9PFG suitable for high-throughput real-time systems where deterministic timing is critical.

Does the 70V9099L9PFG support independent power-down of each port?

Yes, the 70V9099L9PFG supports per-port power-down via dual chip enables (CE0X and CE1X). When CE0X = VIL and CE1X = VIH for one clock cycle, the corresponding port enters low-power standby consuming only 0.4 mA typ. The 70V9099L9PFG allows asymmetric operation-e.g., left port active while right port is in full standby-reducing total system power in burst-mode applications.

How does the address counter function in the 70V9099L9PFG?

The 70V9099L9PFG integrates a synchronous 17-bit address counter per port, controlled by CNTENX and CNTRSTX inputs. When CNTENX = VIL on the rising CLK edge, the counter advances automatically; CNTRSTX = VIL resets it to address 0. This eliminates external address sequencers in applications like packet header parsing or waveform generation, and is fully supported in both pipelined and flow-through output modes of the 70V9099L9PFG.

Can the 70V9099L9PFG be used for depth expansion without external logic?

Yes, the 70V9099L9PFG features dual chip enables (CE0X/CE1X) per port explicitly designed for logic-free depth expansion. By cascading CE signals across multiple devices-e.g., using CE0 of device N+1 driven by CE1 of device N-designers achieve seamless 256K, 384K, or larger memory maps. This capability is documented in the 70V9099L9PFG datasheet Figure 4 and requires no additional gates or CPLDs.

What is the difference between pipelined and flow-through output modes in the 70V9099L9PFG?

In pipelined mode (FT/PIPEX = VIH), output data is registered, yielding 9 ns tCD2 and 15 ns tCYC2-ideal for high-frequency, burst-oriented transfers. In flow-through mode (FT/PIPEX = VIL), outputs reflect combinatorial memory content with 20 ns tCD1 and 25 ns tCYC1-better suited for low-latency, single-cycle handshakes. Both modes are independently configurable per port on the 70V9099L9PFG, enabling hybrid system architectures.