Renesas 70V5388S100BG

Overview

70V5388S100BG from Integrated Device Technology is a 3.3V, 64K × 18-bit synchronous four-ported static RAM with true simultaneous access across all four ports, 100 MHz maximum clock frequency, LVTTL I/O interface, and 272-ball BGA (27 mm × 27 mm, 1.27 mm pitch) packaging. It enables high-bandwidth inter-processor communication in real-time embedded systems requiring deterministic memory arbitration.

For engineers reviewing the 70V5388S100BG datasheet, 70V5388S100BG pinout, 70V5388S100BG application, or 70V5388S100BG equivalent, key selection criteria include its pipelined 3.6 ns clock-to-data timing, per-port counter/mask register readback via address lines, JTAG boundary scan support, MBIST controller, and dual chip enable architecture for depth expansion.

Technical Context

The 70V5388S100BG implements a synchronous pipelined FourPort™ architecture with independent clock, reset, and control inputs per port. Each port features dedicated address counters with maskable wrap-around, mailbox interrupt flags (INTPn/CNTINTPn), and configurable byte-select (UBPn/LBPn) and output-enable (OEPn) logic.

It supports concurrent read/write operations across all four ports to the same memory location using true four-ported SRAM cells. Control is synchronized to rising CLK edges, while MRST, OE, and interrupt outputs operate asynchronously. JTAG (TMS/TCK/TDI/TDO/TRST) and MBIST (CLKMBIST) interfaces are fully compliant with IEEE 1149.1.

Key Specifications

Pinout & Package

70V5388S100BG uses a 272-pin BGA package (IDT package code BG-272) measuring 27 mm × 27 mm × 2.33 mm with 1.27 mm ball pitch. Central thermal balls connect to VSS for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous multi-port memory applications.

Compared with 70V5388S100BG, the 133 MHz and 166 MHz variants deliver progressively lower tCD2 and higher fMAX but increase supply noise sensitivity and power consumption-making the 100 MHz version optimal for thermally constrained or cost-sensitive industrial deployments where 1.4 Gbps aggregate bandwidth suffices.

Availability

70V5388S100BG is available at Aetrix Electronics and suitable for industrial PLC backplanes, avionics data concentrators, and multi-core DSP subsystems requiring stable component supply across extended product lifecycles.

Supply support for 70V5388S100BG 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 signal conditioning ICs for communications and industrial markets.

The IDT70V5388/78 family was designed specifically for deterministic, high-bandwidth inter-processor communication in real-time embedded systems-emphasizing simultaneous access, hardware mailboxing, and built-in testability.

FAQ

What is the maximum operating frequency of the 70V5388S100BG?

The 70V5388S100BG is rated for a maximum clock frequency of 100 MHz across all four ports under industrial temperature conditions (–40 °C to +85 °C). This corresponds to a minimum clock cycle time of 10 ns and guarantees 3.6 ns maximum clock-to-data valid delay (tCD2) with 3.3 V ±150 mV supply.

Does the 70V5388S100BG support JTAG boundary scan and memory BIST?

Yes, the 70V5388S100BG integrates full IEEE 1149.1-compliant JTAG (TMS/TCK/TDI/TDO/TRST) and an on-chip Memory Built-In Self-Test (MBIST) controller driven by CLKMBIST. Both are production-tested and documented in the functional description starting on page 21 of the datasheet.

How does the counter readback function work on the 70V5388S100BG?

Asserting CNTRDPn LOW causes the 70V5388S100BG to drive the current value of that port's internal address counter onto its A0Pn–A15Pn pins-regardless of CE0/CE1 state. This provides real-time visibility into buffer pointers without halting memory operations or consuming CPU cycles.

What package type and dimensions does the 70V5388S100BG use?

The 70V5388S100BG uses a 272-ball BGA package (IDT code BG-272) measuring 27 mm × 27 mm × 2.33 mm with 1.27 mm ball pitch. Thermal balls in the center array are internally connected to VSS to enhance heat dissipation in high-power-density layouts.

Can the 70V5388S100BG be used in depth-expanded memory configurations?

Yes, the 70V5388S100BG supports depth expansion using dual chip enables (CE0Pn/CE1Pn) per port. Multiple devices can be cascaded with shared address/data buses and individual CE control-enabling scalable memory capacity without external decoding logic.