Renesas 70V3389S6BC8

Overview

70V3389S6BC8 from Integrated Device Technology is a high-speed 64K × 18-bit synchronous dual-port static RAM with pipelined output, true dual-port architecture enabling simultaneous read/write access to the same memory location, 133 MHz operation (7.5 ns cycle time), and selectable 3.3 V or 2.5 V I/O interface per port - used in high-bandwidth inter-processor communication and real-time DSP buffering.

For engineers reviewing the 70V3389S6BC8 datasheet, 70V3389S6BC8 pinout, 70V3389S6BC8 application, or 70V3389S6BC8 equivalent, this page delivers verified timing parameters, validated dual-port counter control behavior, confirmed TQFP-128 and BGA package mappings, and precise voltage domain separation between core (3.3 V) and I/O (3.3 V/2.5 V) supplies.

Technical Context

The 70V3389S6BC8 implements fully synchronous dual-port operation with independent clock domains (CLKL/CLKR), register-controlled address/data/control inputs on both ports, and pipelined output mode delivering 4.2 ns clock-to-data (max) at 133 MHz. Its self-timed write pulse decouples internal write latency from clock edge timing.

Each port supports independent voltage selection via OPTL/OPTR pins, enabling mixed-voltage system interfacing - e.g., left port at 3.3 V LVTTL and right port at 2.5 V - with dedicated VDDQL/VDDQR supplies. Address counter logic (CNTENL/CNTRSTL and CNTENR/CNTRSTR) allows burst-mode sequential access without external address generation.

Key Specifications

Pinout & Package

70V3389S6BC8 is packaged in a 128-pin Thin Quad Flatpack (TQFP), body size 14 mm × 20 mm × 1.4 mm, with 0.5 mm lead pitch. All VDD pins require 3.3 V supply; VDDQL/VDDQR must match OPTL/OPTR logic level (3.3 V if VIH, 2.5 V if VIL).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-100AXC and AS7C362000B-12JIN, the 70V3389S6BC8 uniquely combines 18-bit width, 12 ns cycle time, per-port 2.5 V/3.3 V I/O selection, and integrated address counter - making it optimal for heterogeneous, high-throughput embedded memory bridges.

Availability

70V3389S6BC8 is available at Aetrix Electronics and suitable for telecom line card buffering, DSP co-processor interfacing, and industrial PLC motion control requiring stable component supply across extended production lifecycles.

Supply support for 70V3389S6BC8 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, designs high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.

The 70V3389 product line delivers synchronous dual-port SRAMs optimized for low-latency, deterministic inter-processor communication in real-time embedded systems - emphasizing pipelined timing, voltage flexibility, and counter-assisted burst access.

FAQ

What is the maximum operating frequency of the 70V3389S6BC8?

The 70V3389S6BC8 supports a minimum clock cycle time of 12 ns, corresponding to a maximum operating frequency of 83.3 MHz in pipelined mode. This is specified for the S6 speed grade under commercial temperature conditions (0°C to +70°C) and is validated with 1.8 ns setup and 0.7 ns hold timing margins on all control inputs.

Does the 70V3389S6BC8 support independent voltage operation on its two ports?

Yes, the 70V3389S6BC8 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 LVTTL operation with VDDQL = 3.3 V; setting OPTR to VIL (0 V) configures the right port for 2.5 V operation with VDDQR = 2.5 V - enabling direct connection to mixed-voltage FPGAs or ASICs.

How does the address counter function in the 70V3389S6BC8?

The 70V3389S6BC8 integrates independent address counters on each port, controlled by CNTENL/CNTRSTL (left) and CNTENR/CNTRSTR (right). When CNTEN = VIL, the counter advances on each CLK rising edge, generating sequential addresses without external logic. CNTRST asynchronously resets the counter to address 0 - useful for initializing burst transfers in DSP or imaging pipelines.

What package options are available for the 70V3389S6BC8?

The 70V3389S6BC8 is offered in three package variants: 128-pin TQFP (PKG128), 208-pin fine-pitch BGA (BF208), and 256-pin BGA (BC256/BCG256). The "BC8" suffix in 70V3389S6BC8 specifically denotes the 128-pin TQFP package with commercial temperature range and S6 speed grade.

Can the 70V3389S6BC8 be used for depth expansion without external logic?

Yes, the 70V3389S6BC8 features dual chip enables (CE0 and CE1) per port, allowing straightforward depth expansion of multiple devices using only shared address/data buses and dedicated CE lines - no external address decoders or glue logic required. Truth Table I in the datasheet defines the exact CE0/CE1 combinations needed for enable/disable sequencing.