Renesas 70V3589S166DRG

Overview

70V3589S166DRG 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 subsystems.

For engineers reviewing the 70V3589S166DRG datasheet, 70V3589S166DRG pinout, 70V3589S166DRG application, or 70V3589S166DRG equivalent, key selection criteria include pipelined vs. flow-through output timing, independent VDDQ voltage selection per port, dual chip enable depth expansion capability, JTAG IEEE 1149.1 compliance, and industrial-grade operation up to 133MHz.

Technical Context

This device implements fully synchronous dual-port operation with registered address, data, and control inputs on both ports-enabling minimal setup/hold times (1.7ns setup, 0.5ns hold @166MHz). Its internal architecture includes dual address counters with repeat and enable features, separate byte enables for 9-bit-wide data segments, and Dual Cycle Deselect (DCD) logic for pipelined mode stability.

The core uses 3.3V ±150mV supply while each port's I/O interface is independently configurable via OPT pins for either 3.3V (±150mV) or 2.5V (±100mV) operation. JTAG boundary-scan support complies with IEEE 1149.1, and automatic power-down is controlled by CE0/CE1 signals per port.

Key Specifications

Pinout & Package

70V3589S166DRG is packaged in a 208-pin Plastic Quad Flatpack (PQFP) with 0.5mm lead pitch and body size 28mm × 28mm × 3.5mm. Pin functions are symmetrically distributed across left (L) and right (R) ports, with dedicated clocks, chip enables, address strobes, counter controls, and I/O banks.

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 70V3589S166DRG uniquely supports per-port I/O voltage selection, hardware address counters with repeat, and IEEE 1149.1 JTAG-making it optimal for heterogeneous, testable, and timing-deterministic embedded systems.

Availability

70V3589S166DRG is available at Aetrix Electronics and suitable for telecom infrastructure, FPGA acceleration, industrial motion control, and avionics data concentrators requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 70V3589S166DRG 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, IDT) is a global semiconductor leader specializing in high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.

The 70V3589S166DRG belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for real-time, low-latency inter-processor communication in systems demanding simultaneous access, deterministic timing, and robust testability.

FAQ

What is the maximum guaranteed operating frequency of the 70V3589S166DRG across temperature grades?

The 70V3589S166DRG is rated for 166MHz operation in the commercial temperature range (0°C to +70°C). For industrial applications (−40°C to +85°C), the maximum guaranteed frequency is 133MHz-verified by AC electrical specifications in Table 11 of the official datasheet.

Does the 70V3589S166DRG support independent I/O voltage selection on left and right ports?

Yes, the 70V3589S166DRG supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL/OPTR to VIH (3.3V) configures the corresponding port for 3.3V I/O operation; setting to VIL (0V) configures it for 2.5V I/O operation-enabling mixed-voltage system interfacing without external level shifters.

How does the Dual Cycle Deselect (DCD) feature function in pipelined output mode for the 70V3589S166DRG?

In pipelined output mode (PL/FT = VIH), chip enables CE0 and CE1 are double-buffered-requiring two clock cycles to fully deselect the port. This prevents metastability and ensures clean output disable transitions during rapid enable/disable sequences, improving signal integrity in high-speed depth-expanded memory configurations using the 70V3589S166DRG.

Can the 70V3589S166DRG be used in systems requiring IEEE 1149.1 JTAG boundary-scan testing?

Yes, the 70V3589S166DRG integrates a fully compliant IEEE 1149.1 JTAG TAP controller with dedicated TCK, TMS, TDI, TDO, and TRST pins. This enables boundary-scan testing, interconnect verification, and in-system programming support-critical for high-reliability telecom and avionics PCBs using the 70V3589S166DRG.

What memory organization and addressing scheme does the 70V3589S166DRG implement?

The 70V3589S166DRG implements a 128K × 36-bit organization (4.608 Mbit), addressed via A0–A16. Note that A16 is a no-connect (NC) for this variant-effectively limiting usable address space to 64K × 36 unless externally decoded. Address strobe (ADSL/ADSR) and counter enable (CNTENL/CNTENR) support hardware-managed sequential access within the 70V3589S166DRG.