Renesas 70V3569S4BFG

Overview

70V3569S4BFG 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, 7.5 ns cycle time at 133 MHz, and selectable 3.3 V or 2.5 V I/O interface per port - used in high-bandwidth packet buffering and real-time DSP co-processor memory subsystems.

For engineers reviewing the 70V3569S4BFG datasheet, 70V3569S4BFG pinout, 70V3569S4BFG application, or 70V3569S4BFG equivalent, this device supports depth expansion via dual chip enables, offers counter-enabled burst addressing, and delivers 9.6 Gbps aggregate bandwidth with sub-5 ns clock-to-data timing in pipelined mode.

Technical Context

The 70V3569S4BFG implements fully synchronous operation on both ports using edge-triggered registers for address, data, and control inputs - achieving 1.8 ns setup and 0.7 ns hold times at 133 MHz. Its internal architecture includes independent address strobe (ADS), counter enable (CNTEN), and counter reset (CNTRST) logic per port, enabling flexible external-address or auto-incremented burst modes without external sequencing logic.

Each port features separate byte enables (BE0–BE3) for 9-bit granularity, self-timed write cycles, and independent OPT-pin-controlled I/O voltage selection (3.3 V or 2.5 V), while the 3.3 V core supply (VDD) remains fixed. Power management includes four standby current modes (ISB1–ISB4) activated by CE0/CE1 combinations, supporting dynamic power gating per port.

Key Specifications

Pinout & Package

70V3569S4BFG is packaged in a 208-ball fine-pitch BGA (fpBGA) with 0.8 mm ball pitch and 15 mm × 15 mm body size. Pin functions are symmetrically distributed across left (L) and right (R) ports, each with dedicated address, data, control, and power terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-133AXC and AS7C3316PFS-133BIN, the 70V3569S4BFG uniquely combines per-port I/O voltage flexibility, pipelined timing, and dual CE-based depth expansion - making it optimal for mixed-voltage, high-throughput embedded memory subsystems.

Availability

70V3569S4BFG is available at Aetrix Electronics and suitable for telecom packet buffering, DSP co-processor memory, and industrial motion control applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for 70V3569S4BFG 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 70V3569S4BFG belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered specifically for deterministic, low-latency shared-memory architectures in real-time networking and signal processing systems.

FAQ

What is the maximum operating frequency of the 70V3569S4BFG?

The 70V3569S4BFG supports up to 133 MHz operation with a guaranteed 7.5 ns clock cycle time in pipelined mode. This frequency is validated across the commercial temperature range (0°C to +70°C) and under specified 3.3 V ±150 mV supply conditions. The 70V3569S4BFG achieves this performance using registered inputs and self-timed write circuitry, ensuring timing closure without external delay compensation.

Does the 70V3569S4BFG support independent I/O voltage selection per port?

Yes, the 70V3569S4BFG supports independent 3.3 V or 2.5 V I/O interface levels on left and right ports via OPTL and OPTR pins. When OPTL = VIH (3.3 V), VDDQL must be 3.3 V; when OPTL = VIL (0 V), VDDQL must be 2.5 V - and similarly for OPTR/VDDQR. This capability allows the 70V3569S4BFG to interface directly with mixed-voltage SoCs or FPGAs without external level shifters.

How does the address counter function in the 70V3569S4BFG?

The 70V3569S4BFG implements an independent 14-bit address counter per port, controlled by CNTENL/CNTENR and CNTRSTL/CNTRSTR. When CNTEN = VIL on the rising CLK edge, the counter advances automatically - eliminating need for external address generation logic. ADS = VIH holds the counter; ADS = VIL loads an external address. This feature enables efficient burst-mode access in the 70V3569S4BFG for applications like FIFO emulation and pattern streaming.

What power-saving modes does the 70V3569S4BFG offer?

The 70V3569S4BFG provides four distinct standby modes: ISB1 (both ports disabled, TTL inputs), ISB2 (one port active), ISB3 (full standby, CMOS inputs), and ISB4 (one port in full standby). ISB3 draws only 6 mA typical - achieved when both CE0 and CE1 are held above VDDQ − 0.2 V. These modes are hardware-controlled and require no firmware intervention, making the 70V3569S4BFG suitable for energy-conscious embedded systems.

Is the 70V3569S4BFG pin-compatible with other members of the 70V3569 family?

The 70V3569S4BFG shares identical pinout and package (208-ball fpBGA) with 70V3569S5BFG and 70V3569S6BFG - differing only in speed grade and temperature rating. All variants use the same footprint, signal mapping, and power configuration. Therefore, the 70V3569S4BFG can be substituted for S5/S6 in commercial-temp designs without PCB changes, provided timing margins accommodate the 4.2 ns tCD2 specification.