Renesas 70V3569S5BF8

Overview

70V3569S5BF8 from Integrated Device Technology is a high-speed 16K × 36-bit synchronous dual-port static RAM with pipelined output mode, 7.5 ns cycle time (133 MHz), and true simultaneous access capability on independent left/right ports. It supports selectable 3.3 V or 2.5 V I/O interfaces per port via OPT pins, operates across industrial temperature range (–40°C to +85°C), and delivers 9.6 Gbps aggregate bandwidth - used in real-time packet buffering for telecom line cards and FPGA co-processor memory subsystems.

For engineers reviewing the 70V3569S5BF8 datasheet, 70V3569S5BF8 pinout, 70V3569S5BF8 application, or 70V3569S5BF8 equivalent, key selection criteria include pipelined read latency, dual-port depth expansion support via dual chip enables, byte-selectable write control (BE0–BE3), counter-enable/counter-reset functionality for burst address generation, and independent VDDQ voltage selection per port.

Technical Context

The 70V3569S5BF8 implements fully synchronous operation on both ports with clocked address, data, and control registers - enabling minimal setup (1.8 ns) and hold (0.7 ns) times at 133 MHz. Its pipelined output mode introduces one-cycle latency between clock edge and valid data output, while self-timed write logic maintains fast cycle time without external timing constraints.

Each port features independent power domains: fixed 3.3 V ±150 mV core supply (VDD) and selectable 3.3 V or 2.5 V ± tolerance I/O supply (VDDQ) controlled by OPTL/OPTR pins. The device integrates dual chip enables (CE0/CE1 per port) for seamless depth expansion and separate byte enables (BE0–BE3) supporting 9-bit byte masking on 36-bit data buses.

Key Specifications

Pinout & Package

70V3569S5BF8 is housed in a 208-pin Plastic Quad Flatpack (PQFP) package with 28 mm × 28 mm body and 0.65 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); 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 AS7C331664B-133BIN, the 70V3569S5BF8 uniquely combines per-port I/O voltage selection, pipelined latency control, and integrated address counter - enabling tighter system-level timing budgets and eliminating external voltage translation in heterogeneous SoC interfaces.

Availability

70V3569S5BF8 is available at Aetrix Electronics and suitable for telecom infrastructure, FPGA-accelerated computing, and industrial motion control applications requiring stable component supply, long-term lifecycle assurance, and industrial temperature compliance.

Supply support for 70V3569S5BF8 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 70V3569S5BF8 belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for real-time data exchange between heterogeneous processors, FPGAs, and ASICs in bandwidth-constrained, low-latency systems.

FAQ

What is the maximum operating frequency supported by the 70V3569S5BF8?

The 70V3569S5BF8 supports a guaranteed 133 MHz operation with a 7.5 ns clock cycle time under industrial temperature conditions (–40°C to +85°C). This frequency is achievable with pipelined read mode and meets all AC timing specifications including 1.8 ns address setup and 0.7 ns hold times. The device does not support overclocking beyond this rated speed.

Does the 70V3569S5BF8 support independent voltage supplies for each port's I/O interface?

Yes, the 70V3569S5BF8 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 setting it to VIL (0 V) configures VDDQL for 2.5 V. The same applies to OPTR and VDDQR. Core supply VDD remains fixed at 3.3 V ±150 mV for both configurations.

How does the address counter function in the 70V3569S5BF8, and what signals control it?

The 70V3569S5BF8 includes independent address counters for each port, controlled by CNTENL/CNTENR (enable) and CNTRSTL/CNTRSTR (reset) signals. When CNTENX is asserted low on the rising CLK edge, the internal address increments automatically. CNTRSTX resets the counter to address 0. ADSX must be high to allow counter operation; when ADSX is low, external addresses take precedence.

What package type and dimensions does the 70V3569S5BF8 use?

The 70V3569S5BF8 uses a 208-pin Plastic Quad Flatpack (PQFP) package with a 28 mm × 28 mm body size and 0.65 mm lead pitch. Pin layout follows standard PQFP conventions with dedicated power/ground distribution and symmetrical I/O grouping per port. Thermal pad is not present; thermal dissipation relies on PCB copper area and airflow.

Can the 70V3569S5BF8 perform simultaneous read and write operations on the same memory location?

Yes, the 70V3569S5BF8 uses true dual-port memory cells that permit simultaneous read and write access to the same memory address - one operation on the left port and the other on the right port. This behavior is guaranteed across the full industrial temperature range and does not require arbitration logic or conflict resolution circuitry.