Renesas 70V9099L9PFG8

Overview

70V9099L9PFG8 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 buffers.

For engineers reviewing the 70V9099L9PFG8 datasheet, 70V9099L9PFG8 pinout, 70V9099L9PFG8 application, or 70V9099L9PFG8 equivalent, key selection criteria include pipelined vs. flow-through output timing, dual chip-enable depth expansion capability, address counter support for burst transfers, LVTTL-compatible 3.3V I/O, and TQFP-100 packaging for high-density PCB layouts.

Technical Context

The 70V9099L9PFG8 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 clock. Its self-timed write pulse decouples internal write completion from clock edge timing, enabling 15 ns cycle time at 66 MHz in pipelined mode.

Each port features independent FT/PIPE control, dual chip enables (CE0/CE1), address strobe (ADS), counter enable (CNTEN), and counter reset (CNTRST) signals. The device supports depth expansion without external logic and provides asynchronous output enable (OE) for flexible bus interfacing.

Key Specifications

Pinout & Package

70V9099L9PFG8 is housed in a 100-pin TQFP (PNG100) package with exposed thermal pad. All VDD pins require local 3.3V decoupling; all VSS pins must connect to ground. Pin 1 is located at top-left corner (notch-marked side).

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-15JIN, the 70V9099L9PFG8 uniquely delivers 9 ns pipelined access, integrated address counter, and dual chip enables - making it optimal for high-frequency, burst-oriented, expandable dual-port memory systems where latency and scalability are design-critical.

Availability

70V9099L9PFG8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, medical imaging subsystems, and real-time DSP systems requiring stable component supply, long-lifecycle support, and guaranteed industrial temperature performance.

Supply support for 70V9099L9PFG8 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 delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, infrastructure, and IoT applications.

The 70V9099L9PFG8 belongs to Renesas' legacy IDT dual-port SRAM product line, engineered specifically for high-bandwidth, low-latency, deterministic memory sharing in telecom switching, real-time control, and digital signal processing systems.

FAQ

What is the maximum operating frequency of the 70V9099L9PFG8 in pipelined mode?

The 70V9099L9PFG8 achieves a 15 ns clock cycle time in pipelined output mode, supporting a maximum operating frequency of 66 MHz. This is confirmed by AC Electrical Characteristics Table 11 (tCYC2 = 15 ns max for commercial/industrial grades), and applies when FT/PIPE = VIH on the active port. The device sustains this rate with full 8-bit data throughput per cycle on both ports simultaneously.

Does the 70V9099L9PFG8 support depth expansion without external logic?

Yes, the 70V9099L9PFG8 supports seamless depth expansion using its dual chip enables (CE0 and CE1 per port). As detailed in Truth Table I and Figure 4 of the datasheet, configuring CE0 = VIL and CE1 = VIH enables a port, while other CE combinations place it in low-power standby. This allows stacking multiple 70V9099L9PFG8 devices to increase memory depth without additional address decoding logic.

What is the function of the ADS pin on the 70V9099L9PFG8?

The ADS (Address Strobe) pin on the 70V9099L9PFG8 controls whether the external address is loaded into the internal latch on the rising clock edge. When ADS = VIL, the current address inputs are captured; when ADS = VIH, the internal address counter (if enabled) continues incrementing. This enables flexible addressing modes - direct external addressing or automatic burst increments - both synchronized to CLK.

Can the 70V9099L9PFG8 operate in both pipelined and flow-through output modes?

Yes, the 70V9099L9PFG8 supports both output modes via dedicated FT/PIPEL and FT/PIPER pins per port. Setting FT/PIPE = VIH configures pipelined mode (9 ns tCD2, 15 ns tCYC2); setting FT/PIPE = VIL selects flow-through mode (20 ns tCD1, 25 ns tCYC1). Each port can be independently configured, allowing mixed-mode operation for optimized latency vs. timing margin trade-offs.

Is the 70V9099L9PFG8 pin-compatible with the 70V9199L9PFG8?

Yes, the 70V9099L9PFG8 and 70V9199L9PFG8 share identical pinout, package (100-pin TQFP), and electrical specifications. The sole functional difference is memory organization: 70V9099L9PFG8 is 128K × 8-bit, while 70V9199L9PFG8 is 128K × 9-bit (with parity bit). Both support identical timing, control logic, and feature set - enabling drop-in replacement where 8-bit data width suffices.