Renesas 70V3569S5BFI

Overview

70V3569S5BFI from Integrated Device Technology is a high-speed 16K × 36-bit synchronous dual-port static RAM with pipelined output, true dual-port architecture enabling simultaneous read/write access to the same memory location, 5 ns max clock-to-data access (industrial grade), and support for independent 3.3 V or 2.5 V I/O voltage per port. It serves as a shared buffer in real-time digital signal processing systems requiring deterministic latency and concurrent data flow between two processors or buses.

For engineers reviewing the 70V3569S5BFI datasheet, 70V3569S5BFI pinout, 70V3569S5BFI application, or 70V3569S5BFI equivalent, this device is selected for high-bandwidth inter-processor communication, burst-mode FIFO buffering, and time-critical memory arbitration where sub-10 ns cycle timing, byte-selectable writes, and counter-driven address sequencing are required.

Technical Context

The 70V3569S5BFI implements fully synchronous operation on both left and right ports, with all control, address, and data inputs registered on the rising edge of CLKL/CLKR. Its pipelined output mode introduces one-cycle latency for data valid, enabling stable 133 MHz operation (7.5 ns cycle time) while maintaining 4.2 ns clock-to-data-out at maximum speed grade.

It features independent address strobe (ADSL/ADSR), counter enable (CNTENL/CNTENR), and counter reset (CNTRSTL/CNTRSTR) logic per port, allowing external address loading or internal sequential addressing without bus contention. Dual chip enables (CE0X/CE1X) support depth expansion without external logic, and separate byte enables (BE0–BE3 per port) provide 9-bit granularity for multiplexed bus compatibility.

Key Specifications

Pinout & Package

70V3569S5BFI is packaged in a 208-pin Plastic Quad Flatpack (PQFP) with 0.5 mm lead pitch and body size ≈ 28 mm × 28 mm × 3.5 mm. Pin functions are symmetrically organized for left (L) and right (R) ports, with dedicated VDD/VSS, clock, address, data I/O, control, and option pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-5BC and AS7C331664B-5BIN, the 70V3569S5BFI uniquely delivers per-port I/O voltage selection, integrated address counter logic, and dual CE-based depth expansion-making it optimal for heterogeneous, timing-deterministic, and space-constrained dual-processor architectures.

Availability

70V3569S5BFI is available at Aetrix Electronics and suitable for telecom infrastructure, real-time DSP co-processing, and industrial motion control applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for 70V3569S5BFI 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 70V3569S5BFI belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered specifically for deterministic, low-latency inter-processor communication in real-time embedded systems.

FAQ

What is the maximum operating frequency of the 70V3569S5BFI?

The 70V3569S5BFI supports a minimum clock cycle time of 7.5 ns, enabling operation up to 133 MHz in pipelined mode. This specification is guaranteed across the full industrial temperature range (−40°C to +85°C) and applies to both ports simultaneously when configured per datasheet timing constraints.

Does the 70V3569S5BFI support independent I/O voltage selection per port?

Yes, the 70V3569S5BFI supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL to VIH configures the left port for 3.3 V I/O operation (requiring VDDQL = 3.3 V), while setting OPTR to VIL configures the right port for 2.5 V I/O (requiring VDDQR = 2.5 V). Both ports may operate at different voltages concurrently.

How does the address counter function in the 70V3569S5BFI?

The 70V3569S5BFI implements a per-port address counter controlled by CNTENL/CNTENR and CNTRSTL/CNTRSTR. When CNTENX is asserted low on the rising clock edge, the internal address increments automatically-bypassing the external address bus. ADSX determines whether the counter output or external address is used, enabling efficient sequential access in burst-mode applications.

What package type is used for the 70V3569S5BFI?

The 70V3569S5BFI is supplied in a 208-pin Plastic Quad Flatpack (PQFP) package with 0.5 mm lead pitch and dimensions approximately 28 mm × 28 mm × 3.5 mm. This package is RoHS-compliant and supports standard surface-mount reflow assembly processes.

Is the 70V3569S5BFI suitable for industrial temperature applications?

Yes, the 70V3569S5BFI is rated for industrial temperature operation from −40°C to +85°C. This rating is validated per the 70V3569S5 speed grade and applies to all key AC/DC specifications including tCD2 ≤ 5 ns, ISB3 ≤ 30 mA, and full functionality under worst-case voltage and thermal conditions.