Renesas 70V3379S6BC

Overview

70V3379S6BC from Integrated Device Technology is a high-speed 32K × 18-bit synchronous dual-port static RAM with pipelined output mode, 3.3V core supply, and independently configurable 3.3V/2.5V I/O interfaces per port. It supports simultaneous read/write access to the same memory location, delivers 4.2ns clock-to-data (pipelined), and operates at 133MHz (7.5ns cycle time) for 9.6 Gbps aggregate bandwidth in telecom switching and real-time DSP buffering.

For engineers reviewing the 70V3379S6BC datasheet, 70V3379S6BC pinout, 70V3379S6BC application, or 70V3379S6BC equivalent, key selection criteria include its dual-port pipelined timing, independent VDDQ voltage selection per port via OPT pins, counter-enable/reset functionality for burst address generation, and support for depth expansion using dual chip enables without external logic.

Technical Context

The 70V3379S6BC implements true dual-port SRAM cells with fully synchronous operation on both left and right ports, where all control, address, and data inputs are registered on the rising edge of CLKL/CLKR. Its pipelined output mode introduces one-cycle latency between clock and valid data, enabling deterministic timing at 133MHz.

Each port features independent power domains: fixed 3.3V VDD core and selectable 3.3V/2.5V VDDQ I/O supplies controlled by OPTL/OPTR pins. The device integrates address counters with CNTENL/CNTENR and CNTRSTL/CNTRSTR inputs, allowing autonomous sequential addressing without external sequencers - critical for FIFO emulation and video line buffering.

Key Specifications

Pinout & Package

70V3379S6BC is packaged in a 256-pin Ball Grid Array (BC256/BCG256) with 1.0 mm ball pitch and 17 mm × 17 mm body size. All VDD pins require 3.3 V supply; VDDQ pins must match OPT pin logic level (3.3 V if OPT = VIH, 2.5 V if OPT = 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 CY7C1375BV-167AXC and AS7C33256B-12JCIN, the 70V3379S6BC uniquely combines per-port VDDQ selection, integrated address counters, and pipelined timing - making it optimal for mixed-voltage, high-throughput, burst-oriented systems where timing predictability and interface flexibility are critical.

Availability

70V3379S6BC is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, broadcast video equipment, and FPGA-based protocol acceleration requiring stable component supply across commercial temperature range.

Supply support for 70V3379S6BC 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 power solutions for communications and computing markets.

The 70V3379S6BC belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for real-time data buffering, packet switching, and burst-mode DSP applications demanding deterministic latency and dual-clock-domain interoperability.

FAQ

What is the maximum operating frequency of the 70V3379S6BC?

The 70V3379S6BC supports a maximum clock frequency of 83.3 MHz, derived from its 12 ns minimum clock cycle time (tCYC2) in pipelined mode. This allows sustained 9.6 Gbps aggregate bandwidth across both ports. The device achieves this performance with guaranteed 2.0 ns input setup time and 1.0 ns hold time under commercial temperature conditions.

Does the 70V3379S6BC support independent voltage supplies for each port's I/O interface?

Yes, the 70V3379S6BC supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL to VIH (3.3 V) configures VDDQL for 3.3 V operation, while OPTL = VIL (0 V) selects 2.5 V for VDDQL. The same applies to OPTR/VDDQR. This enables mixed-voltage system interfacing without external level shifters.

How does the address counter function in the 70V3379S6BC?

The 70V3379S6BC includes independent address counters on both ports, enabled by CNTENL/CNTENR and reset by CNTRSTL/CNTRSTR. When CNTEN = VIL on a rising clock edge, the counter advances automatically - eliminating need for external address generation logic. ADS = VIH disables external address latching, allowing pure counter-driven access.

What package type is used for the 70V3379S6BC?

The 70V3379S6BC uses a 256-pin Ball Grid Array (BGA) package designated BC256 or BCG256, with 1.0 mm ball pitch and 17 mm × 17 mm body dimensions. This package provides high pin density and thermal performance suitable for high-speed memory applications in compact PCB layouts.

Can the 70V3379S6BC be used in depth-expansion configurations without additional logic?

Yes, the 70V3379S6BC supports depth expansion using only its dual chip enables (CE0 and CE1). Truth Table I shows that CE0 = L and CE1 = H enables a port, while CE0 = H or CE1 = L disables it. Cascading multiple devices with decoded CE signals allows seamless memory depth extension without external decoding logic.