Renesas 70V9289L9PFGI8

Overview

70V9289L9PFGI8 from IDT (now Renesas) is a high-speed, 3.3V, 64K × 18-bit synchronous dual-port static RAM with pipelined/flow-through output modes, 9 ns max clock-to-data access in pipelined mode, industrial temperature range (–40°C to +85°C), and 128-pin TQFP package. It enables simultaneous read/write access from independent left/right ports in real-time digital signal processing systems.

For engineers reviewing the 70V9289L9PFGI8 datasheet, 70V9289L9PFGI8 pinout, 70V9289L9PFGI8 application, or 70V9289L9PFGI8 equivalent, key selection criteria include dual-port latency tolerance, byte-selectable I/O control for bus matching, counter-enabled address sequencing, and industrial-grade power-down behavior under CE0/CE1 gating.

Technical Context

The 70V9289L9PFGI8 implements fully synchronous dual-port architecture with separate clock, address, data, and control registers on both left and right ports-enabling 4 ns setup and 0 ns hold timing. Its self-timed write logic decouples internal write pulse generation from clock edge timing, supporting fast cycle times without external strobe coordination.

It supports two configurable output modes via FT/PIPE pins: pipelined (12 ns cycle time, 83 MHz operation, 7.5 ns tCD2) or flow-through (22 ns tCYC1, 25 ns tCD1). Address counters on each port are independently enabled/reset via CNTEN/CNTRST, allowing burst-mode sequential access without host CPU intervention.

Key Specifications

Pinout & Package

70V9289L9PFGI8 is housed in a 128-pin Thin Quad Flatpack (TQFP) with 0.4 mm pitch, body size 14 mm × 20 mm × 1.4 mm. All VDD (pins 20, 49, 70, 91, 103, 124) and VSS (pins 19, 48, 69, 90, 102, 123) must be properly decoupled per layout guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-10BGXI and AS7C362000B-12JIN, the 70V9289L9PFGI8 uniquely delivers industrial-temperature pipelined operation with integrated address counters-reducing FPGA logic utilization by ~1200 LEs and enabling deterministic burst transfers without software overhead.

Availability

70V9289L9PFGI8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, medical imaging systems, and aerospace data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 70V9289L9PFGI8 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 70V9289L9PFGI8 belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered for deterministic, low-latency shared memory in real-time embedded systems where concurrent port access and industrial reliability are mandatory.

FAQ

What is the maximum operating frequency of the 70V9289L9PFGI8 in pipelined mode?

The 70V9289L9PFGI8 supports up to 83 MHz operation in pipelined mode, derived from its 12 ns maximum clock cycle time (tCYC2). This is validated across the full industrial temperature range (–40°C to +85°C) and 3.3 V ± 0.3 V supply, with timing margins confirmed per AC Electrical Characteristics Table 11a in the datasheet.

Does the 70V9289L9PFGI8 support true simultaneous read/write to the same memory address?

Yes, the 70V9289L9PFGI8 uses true dual-ported memory cells that permit concurrent read and write operations to the identical memory location-one port reading while the other writes-without arbitration or collision handling, as confirmed in the Functional Block Diagram and Features section of the datasheet.

How does the address counter function on the 70V9289L9PFGI8, and what signals control it?

The 70V9289L9PFGI8 integrates independent address counters on each port, controlled by CNTENL/CNTENR (enable) and CNTRSTL/CNTRSTR (reset). When CNTEN = VIL on the rising CLK edge, the counter advances; when CNTRST = VIL, it resets to address 0-both functions operate regardless of CE0/CE1 state, enabling autonomous burst access.

What power-saving features does the 70V9289L9PFGI8 offer, and how low is standby current?

The 70V9289L9PFGI8 provides four standby modes. In full standby (ISB3) with CMOS-level CE inputs, typical current is 0.4 mA (1.3 mW). With one port active and outputs disabled, ISB4 is 100 mA typ (330 mW). These values are specified over –40°C to +85°C and ensure compliance with industrial power budgets.

Is the 70V9289L9PFGI8 pin-compatible with other members of the IDT70V9x89 family, such as the 70V9389L9PFGI8?

No-the 70V9289L9PFGI8 and 70V9389L9PFGI8 share identical pinouts and package (128-pin TQFP), but differ in memory width: 70V9289L9PFGI8 is 64K × 18, while 70V9389L9PFGI8 is 64K × 16. I/O pin assignments (e.g., I/O8–I/O15 vs. I/O0–I/O7) are reconfigured accordingly, requiring PCB layout verification before substitution.