Renesas 70V9089L12PFGI

Overview

70V9089L12PFGI from IDT (now Renesas) is a high-speed 64K × 8-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, 12 ns max clock-to-data access in industrial temperature range (–40°C to +85°C), LVTTL-compatible 3.3 V ±0.3 V supply, and pipelined/flow-through output mode selection via FT/PIPE pin - used in real-time DSP co-processing buffers and FPGA-based protocol bridging.

For engineers reviewing the 70V9089L12PFGI datasheet, 70V9089L12PFGI pinout, 70V9089L12PFGI application, or 70V9089L12PFGI equivalent, key selection criteria include guaranteed 12 ns industrial-grade timing, dual independent clock domains (CLKL/CLKR), on-chip address counter with CNTEN/CNTRST control, and 100-pin TQFP packaging for space-constrained embedded systems requiring deterministic latency.

Technical Context

This device implements fully synchronous operation on both ports with 4 ns setup / 1 ns hold on all inputs, register-controlled address/data/control paths, and self-timed write enabling minimal cycle time. It supports two distinct output modes: pipelined (7.5 ns clock-to-data, 12 ns cycle time, 83 MHz operation) and flow-through (12 ns clock-to-data, 30 ns cycle time).

The dual chip-enable architecture (CE0X/CE1X per port) enables seamless depth expansion without external logic, while independent ADSL/ADSR strobes and dedicated counter enable/reset pins (CNTENL/CNTRSTL, CNTENR/CNTRSTR) allow precise control of internal address generation for burst transfers in telecom frame buffers and video line memories.

Key Specifications

Pinout & Package

100-pin Thin Quad Flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm. All VDD pins require local 3.3 V decoupling; all VSS pins must be connected to ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-12AXC and IS61WV102416BLL-12MLI, the 70V9089L12PFGI uniquely combines industrial-grade 12 ns timing, per-port clocking, integrated address counter, and configurable pipelined/flow-through latency - making it optimal for tightly coupled, latency-sensitive embedded systems where firmware overhead and PCB area must be minimized.

Availability

70V9089L12PFGI is available at Aetrix Electronics and suitable for telecom infrastructure, aerospace data acquisition, and industrial motion control applications requiring stable component supply across extended product lifecycles.

Supply support for 70V9089L12PFGI 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 70V9089L12PFGI belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for deterministic, low-latency inter-processor communication and real-time data buffering in systems demanding concurrent access and strict timing predictability.

FAQ

What is the guaranteed maximum access time for 70V9089L12PFGI over its full operating temperature range?

The 70V9089L12PFGI guarantees a maximum clock-to-data access time of 12 ns across the industrial temperature range (–40°C to +85°C) in pipelined output mode, as specified in the AC Electrical Characteristics table (70V9089/79X12). This value is production-tested and applies to both left and right ports under VDD = 3.3 V ±0.3 V conditions.

Does 70V9089L12PFGI support independent clock domains for left and right ports?

Yes, the 70V9089L12PFGI provides fully independent clock inputs CLKL and CLKR, each governing synchronous operation for its respective port. All control, address, and data registers on each port are clocked on the rising edge of its dedicated clock, enabling true asynchronous timing between ports - essential for FPGA-DSP or processor-to-processor bridging.

How does the address counter function in 70V9089L12PFGI, and what pins control it?

The 70V9089L12PFGI integrates a 16-bit address counter per port, controlled by CNTENL/CNTRSTL (left) and CNTENR/CNTRSTR (right). When CNTEN = low on a rising clock edge, the counter advances; CNTRST = low resets it to address 0. ADS assertion overrides the counter with external address - enabling hybrid burst/sequential access patterns in video or packet processing.

What is the power consumption profile of 70V9089L12PFGI in active and standby modes?

The 70V9089L12PFGI consumes 429 mW typical in active mode (both ports enabled, outputs disabled, f = fMAX) and 1.32 mW typical in full standby mode (both ports disabled with CMOS-level inputs). Standby current drops to <5 µA when powered down via CE0/CE1 - verified in Table 9b for industrial-grade operation at VDD = 3.3 V.

Is 70V9089L12PFGI pin-compatible with other members of the IDT70V9089/79 family, such as the 70V9089L15PFGI?

Yes, all IDT70V9089/79 variants including 70V9089L12PFGI and 70V9089L15PFGI share identical 100-pin TQFP pinouts and electrical interfaces. The suffix '12' denotes 12 ns industrial speed grade, while '15' indicates 15 ns - both use the same footprint, signal mapping, and DC/AC timing structure, allowing drop-in replacement where timing margin permits.