Renesas 70V9289L9PFI

Overview

70V9289L9PFI from Integrated Device Technology is a high-speed 3.3V synchronous dual-port static RAM with 64K × 16-bit organization, true dual-ported memory cells enabling simultaneous access to the same address, 9ns max clock-to-data access in pipelined mode, and industrial temperature support (–40°C to +85°C). It serves as on-chip buffer or inter-processor communication memory in real-time embedded systems requiring deterministic latency.

For engineers reviewing the 70V9289L9PFI datasheet, 70V9289L9PFI pinout, 70V9289L9PFI application, or 70V9289L9PFI equivalent, key selection criteria include pipelined vs. flow-through output timing, dual-port depth/width expansion capability, byte-select control for bus matching, and low-power standby operation at 0.4mA typical in full CMOS standby mode.

Technical Context

The 70V9289L9PFI implements fully synchronous dual-port operation with independent left/right clock inputs (CLKL/CLKR), register-controlled address/data/control paths, and self-timed write cycles decoupled from clock edge timing. Its pipelined output mode achieves 10ns cycle time and 100MHz operation via registered data output path with 6.5ns clock-to-data delay.

It supports address counter functionality with dedicated CNTEN/CNTRST pins per port, ADS strobe enable for external address latching, and separate upper-byte (UB/UBR) and lower-byte (LB/LBR) controls-enabling multiplexed bus compatibility and flexible 16-bit data alignment without glue logic.

Key Specifications

Pinout & Package

70V9289L9PFI is housed in a 128-pin Thin Quad Flatpack (TQFP) package with 0.4mm lead pitch and 14mm × 20mm body dimensions. All VDD pins require connection to 3.3V supply; all VSS pins must be grounded.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-100AXI and IDT70V27L12PF, the 70V9289L9PFI uniquely combines industrial temperature rating, integrated address counter with ADS strobe, and pure 3.3V LVTTL compatibility-making it optimal for automotive and industrial real-time systems demanding deterministic timing and minimal external components.

Availability

70V9289L9PFI is available at Aetrix Electronics and suitable for real-time digital signal processing, industrial programmable logic controllers, and automotive engine control units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 70V9289L9PFI 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 sensor solutions for communications, computing, and industrial markets.

The 70V9289L9PFI belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered specifically for deterministic-latency inter-processor communication and real-time buffering in mission-critical embedded systems.

FAQ

What is the maximum operating frequency of the 70V9289L9PFI in pipelined mode?

The 70V9289L9PFI supports up to 100MHz operation in pipelined output mode, corresponding to a 10ns clock cycle time (tCYC2) as specified in the AC Electrical Characteristics table for the L9 speed grade. This performance is guaranteed over the full industrial temperature range (–40°C to +85°C) with 3.3V ±0.3V supply.

Does the 70V9289L9PFI support independent address counters on both ports?

Yes, the 70V9289L9PFI provides fully independent address counter functionality on both left and right ports, controlled by dedicated CNTENL/CNTRSTL and CNTENR/CNTRSTR pins. Each counter operates autonomously and can be enabled, reset, or held regardless of the other port's state.

How does the FT/PIPE pin affect timing behavior of the 70V9289L9PFI?

The FT/PIPE pin configures the output register behavior per port: when driven high (VIH), it enables pipelined mode with 1-cycle latency and 10ns minimum cycle time; when low (VIL), it selects flow-through mode with 0-cycle latency and 25ns minimum cycle time. Both modes are independently selectable per port via FT/PIPEL and FT/PIPER.

Can the 70V9289L9PFI be used for depth expansion without external logic?

Yes, the 70V9289L9PFI features dual chip enables (CE0X and CE1X) per port, allowing straightforward depth expansion. Two devices can be cascaded using A16 as the MSB select line-CE0 of the upper bank tied to A16, CE0 of the lower bank tied to NOT(A16)-with no additional decoding logic required.

What is the standby current consumption of the 70V9289L9PFI in full CMOS standby mode?

In full CMOS standby mode (both ports disabled with CE0X > VDD – 0.2V and CE1X < 0.2V, all inputs at rail), the 70V9289L9PFI consumes 0.4mA typical (ISB3), with a maximum of 2mA across the industrial temperature range-enabling ultra-low-power retention in battery-backed systems.