Renesas 70V3589S166BFG

Overview

70V3589S166BFG from IDT (now Renesas) is a high-speed 128K × 36-bit synchronous dual-port SRAM with true dual-port architecture enabling simultaneous read/write access to the same memory location from independent left and right ports. It operates at 166MHz with 3.6ns clock-to-data-out (pipelined), supports selectable 3.3V or 2.5V I/O interfaces per port, and delivers 12Gbps aggregate bandwidth. It is used in real-time packet buffering for telecom line cards and FPGA co-processor memory interfacing.

For engineers reviewing the 70V3589S166BFG datasheet, 70V3589S166BFG pinout, 70V3589S166BFG application, or 70V3589S166BFG equivalent, key selection criteria include pipelined vs. flow-through output timing, independent VDDQ voltage selection per port, JTAG IEEE 1149.1 compliance, dual chip enable depth expansion capability, and industrial-grade operation up to +85°C at 133MHz.

Technical Context

This device implements fully synchronous dual-port operation with register-controlled address, data, and control inputs on both ports-enabling minimal 1.7ns setup and 0.5ns hold times at 166MHz. Its dual-cycle deselect (DCD) feature in pipelined mode ensures deterministic bus release timing during multi-device depth expansion.

The memory integrates independent address counters per port with repeat and counter-enable logic, allowing burst-mode sequential addressing without external sequencers. Each port supports independent OPT-pin-configurable I/O voltage (3.3V or 2.5V), while the core VDD remains fixed at 3.3V ±150mV-enabling mixed-voltage system integration.

Key Specifications

Pinout & Package

208-pin fine-pitch Ball Grid Array (fpBGA), package code BFG208. Body size: 15mm × 15mm × 1.4mm, 0.8mm ball pitch. All VDD pins require 3.3V supply; VDDQ pins must match OPT pin logic level (3.3V if OPT = VIH, 2.5V if OPT = VIL).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-166AXC and AS7C33128A-166BIN, the 70V3589S166BFG uniquely supports per-port 2.5V/3.3V I/O selection and pipelined output mode-enabling tighter timing closure in FPGA-based systems and eliminating external level shifters in mixed-voltage architectures.

Availability

70V3589S166BFG is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, avionics data concentrators, and FPGA-accelerated embedded systems requiring stable component supply and long-term lifecycle support.

Supply support for 70V3589S166BFG 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

Renesas Electronics (formerly Integrated Device Technology) is a global semiconductor leader specializing in high-performance memory, timing, and analog solutions for communications, computing, and industrial markets.

The IDT70V3589 product line was designed for ultra-low-latency, high-bandwidth dual-port memory applications in real-time networking, test equipment, and digital signal processing systems requiring deterministic access and mixed-voltage interoperability.

FAQ

What is the maximum operating frequency of the 70V3589S166BFG and under what conditions?

The 70V3589S166BFG operates at up to 166MHz in commercial grade (0°C to +70°C) with pipelined output mode enabled. This requires VDD = 3.3V ±150mV, VDDQ = 3.3V or 2.5V per port (set by OPT pins), and all AC timing parameters met-including 1.7ns address setup and 3.6ns clock-to-data-out. Industrial-grade operation is rated at 133MHz (–40°C to +85°C).

Does the 70V3589S166BFG support independent I/O voltage selection on left and right ports?

Yes, the 70V3589S166BFG supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL = VIH configures left-port I/Os for 3.3V operation (requiring VDDQL = 3.3V), while OPTL = VIL configures them for 2.5V (requiring VDDQL = 2.5V). The same applies independently to the right port using OPTR and VDDQR. The core VDD remains fixed at 3.3V.

How does the pipelined versus flow-through output mode affect timing in the 70V3589S166BFG?

In pipelined mode (PL/FTL = VIH), the 70V3589S166BFG delivers data with 3.6ns clock-to-data-out and 6ns minimum cycle time. In flow-through mode (PL/FTL = VIL), it delivers data with 12ns clock-to-data-out and 20ns minimum cycle time. Pipelined mode adds one-cycle latency but enables higher throughput; flow-through offers zero-cycle latency for critical real-time reads.

Can the 70V3589S166BFG be used for depth expansion, and how is it implemented?

Yes, the 70V3589S166BFG supports depth expansion using dual chip enables (CE0X and CE1X) per port. By decoding address MSBs externally to drive CE0X/CE1X across multiple devices, designers can expand memory depth without additional logic gates. The dual-cycle deselect (DCD) feature ensures clean bus release timing during deselection in pipelined mode.

What JTAG features are supported by the 70V3589S166BFG and how are they accessed?

The 70V3589S166BFG supports full IEEE 1149.1 JTAG boundary-scan functionality via dedicated pins: TCK (10MHz test clock), TMS (test mode select), TDI (test data in), TDO (test data out), and TRST (reset). These signals are accessible on the 208-pin fpBGA package and enable in-system testing, interconnect verification, and debug visibility without requiring special programming hardware beyond standard JTAG adapters.