Renesas 70V3579S5BCGI

Overview

70V3579S5BCGI from Integrated Device Technology is a high-speed 32K × 36-bit synchronous dual-port static RAM with pipelined output, 5 ns max clock-to-data access (industrial grade), 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 networking and packet buffering systems.

For engineers reviewing the 70V3579S5BCGI datasheet, 70V3579S5BCGI pinout, 70V3579S5BCGI application, or 70V3579S5BCGI equivalent, key selection criteria include dual-port timing coordination, byte-selectable 36-bit I/O width, counter-enabled burst addressing, industrial temperature support (–40°C to +85°C), and PQFP-208 package compatibility with depth-expansion logic.

Technical Context

The 70V3579S5BCGI implements full synchronous operation on both ports using edge-triggered registers for address, data, and all control inputs-including CE0/CE1, R/W, OE, BE0–BE3, ADS, CNTEN, and CNTRST-ensuring deterministic setup/hold timing at 133 MHz. Its pipelined output mode introduces one-cycle latency but enables sustained 9.6 Gbps bandwidth.

Each port supports independent I/O voltage selection (3.3 V or 2.5 V) via dedicated OPTL/OPTR pins and corresponding VDDQL/VDDQR supplies, while the core VDD remains fixed at 3.3 V. The internal address counter operates independently per port and advances on CLK rising edge when CNTEN = VIL, regardless of chip enable state.

Key Specifications

Pinout & Package

70V3579S5BCGI is housed in a 208-pin Plastic Quad Flatpack (PQFP) with 0.5 mm lead pitch and 28 mm × 28 mm body size. All VDD pins require 3.3 V supply; VDDQL/VDDQR must match OPTL/OPTR logic levels (3.3 V if VIH, 2.5 V if 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 CY7C1362BV33-133AXC and AS7C33256B-133JCIN, the 70V3579S5BCGI uniquely delivers per-port 2.5 V/3.3 V I/O selection and integrated address counter-enabling mixed-voltage SoC interfacing and burst-mode efficiency without external logic or package trade-offs.

Availability

70V3579S5BCGI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and test equipment requiring stable component supply, long-term lifecycle assurance, and industrial temperature compliance.

Supply support for 70V3579S5BCGI 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 70V3579S5BCGI belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered for deterministic, low-latency memory sharing in real-time systems requiring concurrent access and burst data transfer.

FAQ

What is the maximum operating frequency and access time specification for the 70V3579S5BCGI?

The 70V3579S5BCGI supports a maximum clock frequency of 133 MHz with a 7.5 ns cycle time. Its clock-to-data valid time (tCD2) is guaranteed at 5 ns maximum under industrial temperature conditions (–40°C to +85°C), enabling deterministic timing in high-throughput packet processing applications.

Does the 70V3579S5BCGI support mixed I/O voltage operation between its two ports?

Yes-the 70V3579S5BCGI supports independent I/O voltage selection per port: OPTL configures the left port for either 3.3 V or 2.5 V operation, and OPTR does the same for the right port. This allows one port to interface with a 3.3 V FPGA while the other connects to a 2.5 V ASIC without external level shifters.

How does the address counter function work in the 70V3579S5BCGI?

The 70V3579S5BCGI includes independent address counters on each port, enabled by CNTENL/CNTENR. When CNTEN = VIL, the internal address increments automatically on every CLK rising edge-regardless of CE0/CE1 state-supporting burst transfers without external address generation logic or sequential bus cycles.

What package type and pin count does the 70V3579S5BCGI use?

The 70V3579S5BCGI is packaged in a 208-pin Plastic Quad Flatpack (PQFP) with 0.5 mm lead pitch and a 28 mm × 28 mm body size. This package provides robust thermal performance and straightforward routing for high-density industrial PCBs, unlike BGA alternatives that require microvias and controlled impedance stacks.

Is the 70V3579S5BCGI rated for industrial temperature operation?

Yes-the 70V3579S5BCGI is fully specified for industrial temperature operation from –40°C to +85°C, with validated AC and DC parameters across this range. Its ISB3 full-standby current remains ≤30 mA max at +85°C, ensuring reliable low-power operation in uncooled base station or factory-floor environments.