Renesas 70V3569S5BCI8

Overview

70V3569S5BCI8 from Integrated Device Technology is a high-speed 16K × 36-bit synchronous dual-port static RAM with pipelined output, 7.5 ns cycle time (133 MHz), true dual-port architecture enabling simultaneous access to the same memory location, and industrial temperature support (–40°C to +85°C). It serves as a shared buffer in real-time DSP systems requiring deterministic latency between two independent processors or data paths.

For engineers reviewing the 70V3569S5BCI8 datasheet, 70V3569S5BCI8 pinout, 70V3569S5BCI8 application, or 70V3569S5BCI8 equivalent, this device is selected for high-bandwidth bidirectional data exchange in telecom line cards, packet switching engines, and FPGA co-processor interfaces where clock-to-data timing (≤5 ns max), byte-selectable I/O voltage (2.5 V/3.3 V per port), and counter-enabled burst addressing are critical design requirements.

Technical Context

The 70V3569S5BCI8 implements fully synchronous operation on both ports using edge-triggered registers for address, data, and control inputs-enabling minimal setup (1.8 ns) and hold (0.7 ns) times at 133 MHz. Its pipelined output mode introduces one-cycle latency but guarantees deterministic tCD2 ≤ 5 ns across industrial temperature range.

It features independent OPTL/OPTR pins to configure each port's I/O voltage (2.5 V or 3.3 V), separate byte enables (BE0–BE3 per port) for 9-bit granularity, and an address counter with CNTEN/CNTRST controls-allowing automatic sequential addressing without external logic during burst transfers.

Key Specifications

Pinout & Package

70V3569S5BCI8 is packaged in a 208-pin Plastic Quad Flatpack (PQFP) with 0.5 mm pitch, body size 28 mm × 28 mm × 3.5 mm. Pin functions are symmetrically distributed across left (L) and right (R) ports, with dedicated power/ground balls per I/O bank and independent OPT pins for voltage selection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-100AXC and AS7C331636B-10BIN, the 70V3569S5BCI8 delivers higher bandwidth (133 MHz vs. 100 MHz), industrial temperature support, and integrated address counter-making it uniquely suited for deterministic real-time systems where timing predictability and environmental robustness are mandatory.

Availability

70V3569S5BCI8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, FPGA co-processing, and network switching applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for 70V3569S5BCI8 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, is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions for communications, computing, and industrial markets.

The 70V3569S5BCI8 belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for deterministic, low-latency data sharing between independent processors, FPGAs, and ASICs in real-time embedded systems.

FAQ

What is the maximum operating frequency of the 70V3569S5BCI8?

The 70V3569S5BCI8 supports a maximum operating frequency of 133 MHz, derived from its guaranteed 7.5 ns pipelined clock cycle time (tCYC2). This specification is validated across the full industrial temperature range (–40°C to +85°C) and applies to both ports independently when configured per datasheet timing conditions.

Does the 70V3569S5BCI8 support mixed I/O voltage operation between its two ports?

Yes, the 70V3569S5BCI8 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 operation (requiring VDDQR = 2.5 V)-enabling direct interfacing with heterogeneous logic families without external level shifters.

How does the address counter function in the 70V3569S5BCI8?

The 70V3569S5BCI8 includes an internal 14-bit address counter per port, controlled by CNTEN and CNTRST signals. When CNTEN = VIL and ADS = VIH, the counter increments on each CLK rising edge, generating sequential addresses. CNTRST = VIL asynchronously resets the counter to 0. This eliminates external address generation logic in burst-transfer applications such as packet header processing or waveform streaming.

What package type is used for the 70V3569S5BCI8?

The 70V3569S5BCI8 is supplied in a 208-pin Plastic Quad Flatpack (PQFP) package with 0.5 mm lead pitch and dimensions of 28 mm × 28 mm × 3.5 mm. This package is RoHS-compliant and supports standard surface-mount reflow assembly processes, with dedicated VDD, VDDQ, and VSS pins distributed to minimize noise coupling between core and I/O domains.

Is the 70V3569S5BCI8 suitable for industrial temperature applications?

Yes, the 70V3569S5BCI8 is explicitly qualified for industrial temperature operation from –40°C to +85°C, as confirmed by its "I" speed grade suffix and validation in datasheet Table 4 and Table 9. All AC and DC specifications-including 5 ns max tCD2, 7.5 ns min tCYC2, and ISB3 standby current-are guaranteed across this range, making it appropriate for deployment in uncooled industrial controllers and outdoor telecom equipment.