Renesas 70V3389S5BCI

Overview

70V3389S5BCI from Integrated Device Technology is a high-speed 64K × 18-bit synchronous dual-port static RAM with pipelined output, 5 ns max clock-to-data access, 7.5 ns cycle time (133 MHz), and independent 3.3 V or 2.5 V I/O voltage selection per port. It enables simultaneous read/write access to the same memory location in real-time signal processing systems requiring deterministic latency and burst data flow.

For engineers reviewing the 70V3389S5BCI datasheet, 70V3389S5BCI pinout, 70V3389S5BCI application, or 70V3389S5BCI equivalent, key selection criteria include pipelined read timing, dual-voltage I/O flexibility, counter-enabled address sequencing, industrial temperature support (−40°C to +85°C), and TQFP-128 package compatibility for space-constrained embedded control designs.

Technical Context

The 70V3389S5BCI implements fully synchronous dual-port operation with registered address, data, and control inputs clocked on the rising edge of CLKL/CLKR. Its self-timed write pulse decouples internal write completion from clock edge timing, enabling minimal cycle time without external wait-state logic.

Each port supports independent voltage configuration via OPTL/OPTR pins-selecting either 3.3 V or 2.5 V I/O levels-and includes dedicated byte enables (UBL/LBL, UBR/LBR) for 9-bit granularity. The integrated address counter advances on CNTENL/CNTENR low, with asynchronous reset (CNTRSTL/CNTRSTR) and address strobe (ADSL/ADSR) for flexible burst addressing.

Key Specifications

Pinout & Package

70V3389S5BCI is housed in a 128-pin Thin Quad Plastic Flatpack (TQFP) with 0.4 mm pitch, body size 14 mm × 20 mm × 1.4 mm. All VDD pins require 3.3 V supply; VDDQL/VDDQR must match OPTL/OPTR logic level (3.3 V for VIH, 2.5 V for VIL); all VSS pins connect to ground.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1375BV33-5BC and AS7C361024B-5TIN, the 70V3389S5BCI uniquely delivers industrial-grade reliability, per-port voltage selection, and hardware address counter-making it optimal for FPGA-based embedded systems requiring deterministic burst access and voltage domain bridging.

Availability

70V3389S5BCI is available at Aetrix Electronics and suitable for digital signal processing buffers, FPGA-to-MCU shared memory interfaces, and industrial motion controller data logs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 70V3389S5BCI 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, specializes in high-performance timing, memory interface, and RF solutions for communications, computing, and industrial markets.

The 70V3389S5BCI belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered for real-time embedded systems demanding deterministic latency, burst data handling, and mixed-voltage interoperability between heterogeneous processors and FPGAs.

FAQ

What is the maximum operating frequency of the 70V3389S5BCI?

The 70V3389S5BCI supports a maximum clock frequency of 133 MHz, corresponding to a 7.5 ns clock cycle time (tCYC2). This is guaranteed across the full industrial temperature range (−40°C to +85°C) and applies to both left and right ports independently when configured for pipelined operation.

Does the 70V3389S5BCI support mixed-voltage operation between its two ports?

Yes, the 70V3389S5BCI supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL to VIH (3.3 V) configures the left port for 3.3 V signaling with VDDQL = 3.3 V, while setting OPTR to VIL (0 V) configures the right port for 2.5 V signaling with VDDQR = 2.5 V-enabling direct interfacing with heterogeneous logic families.

How does the address counter function in the 70V3389S5BCI?

The 70V3389S5BCI integrates an internal address counter per port controlled by CNTENL/CNTENR and CNTRSTL/CNTRSTR. When CNTENX is low, the counter advances on each CLKX rising edge, generating sequential addresses without external address bus activity-ideal for burst transfers in video frame buffers or FIFO implementations.

What package type is used for the 70V3389S5BCI?

The 70V3389S5BCI is packaged in a 128-pin Thin Quad Plastic Flatpack (TQFP) with 0.4 mm lead pitch and dimensions of 14 mm × 20 mm × 1.4 mm. This RoHS-compliant package provides thermal and mechanical stability for industrial PCB layouts while maintaining compatibility with standard surface-mount assembly processes.

Is the 70V3389S5BCI suitable for industrial temperature applications?

Yes, the 70V3389S5BCI is rated for industrial temperature operation from −40°C to +85°C, as confirmed by its "I" suffix in the ordering code and validation in the AC/DC electrical specifications tables. It maintains full timing compliance and power integrity across this range, making it suitable for factory automation, transportation, and outdoor infrastructure deployments.