Renesas 70V3589S166BF8

Overview

70V3589S166BF8 from IDT (now Renesas) is a high-speed 128K × 36-bit synchronous dual-port static RAM with true dual-port architecture enabling simultaneous read/write access to the same memory location from independent left and right ports. It operates at 166 MHz with 3.6 ns clock-to-data-out (pipelined mode), supports selectable 3.3 V or 2.5 V I/O interfaces per port, and delivers 12 Gbps aggregate bandwidth. It is used in high-throughput packet buffering, FPGA co-processor memory, and real-time digital signal processing systems requiring deterministic low-latency inter-port data exchange.

For engineers reviewing the 70V3589S166BF8 datasheet, 70V3589S166BF8 pinout, 70V3589S166BF8 application, or 70V3589S166BF8 equivalent, this device is selected for designs demanding concurrent bidirectional memory access, JTAG-compliant testability, industrial-grade temperature operation (–40°C to +85°C at 133 MHz), and flexible voltage scaling across independent ports without external level shifters.

Technical Context

The 70V3589S166BF8 implements fully synchronous dual-port operation with separate clock domains (CLKL/CLKR), pipelined or flow-through output modes controlled by PL/FTL and PL/FTR pins, and dual chip enables (CE0X/CE1X) supporting depth expansion without external logic. Its internal address counter-enabled via CNTENX and resettable via REPEATX-supports burst-mode sequential addressing independent of ADSX strobes.

Each port features double-buffered chip and byte enables (BE0X–BE3X), asynchronous output enable (OEX), and independent I/O voltage selection (3.3 V or 2.5 V) via OPTX pins tied to VDDQX supplies. JTAG boundary-scan (IEEE 1149.1) is integrated for production test and system-level diagnostics.

Key Specifications

Pinout & Package

70V3589S166BF8 is housed in a 208-pin fine-pitch Ball Grid Array (fpBGA) package with 1.0 mm ball pitch, 17 mm × 17 mm footprint, and 1.4 mm height. Power and ground balls are distributed across the array to minimize noise and support high-speed switching.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-166AXC and AS7C33128P36A-166BIN, the 70V3589S166BF8 uniquely combines per-port I/O voltage selection, integrated JTAG, and hardware address counter/repeat-enabling smaller BOMs, higher test coverage, and simplified burst-mode firmware in mixed-voltage, latency-critical systems.

Availability

70V3589S166BF8 is available at Aetrix Electronics and suitable for telecom infrastructure, FPGA acceleration, industrial motion control, and real-time DSP applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for 70V3589S166BF8 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

IDT (Integrated Device Technology), now part of Renesas Electronics, is a semiconductor company specializing in high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.

The 70V3589S166BF8 belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for applications demanding concurrent, deterministic, low-latency memory access between independent processing elements.

FAQ

What is the maximum guaranteed operating frequency of the 70V3589S166BF8?

The 70V3589S166BF8 is rated for 166 MHz operation in commercial temperature range (0°C to +70°C) with 3.6 ns clock-to-data-out in pipelined mode. At industrial temperatures (–40°C to +85°C), it is guaranteed up to 133 MHz. The 166 MHz specification applies only to the commercial-grade version and requires proper power integrity, signal termination, and PCB layout per the manufacturer's design guidelines.

Does the 70V3589S166BF8 support independent voltage operation on its left and right ports?

Yes, the 70V3589S166BF8 supports independent I/O voltage selection: OPTL and OPTR pins configure the left and right ports separately for either 3.3 V (VIH) or 2.5 V (VIL) operation, with corresponding VDDQL and VDDQR supplies. This allows interfacing with heterogeneous logic families-for example, 3.3 V FPGA on the left port and 2.5 V ASIC on the right port-without external level shifters.

How does the REPEAT and CNTEN functionality work in the 70V3589S166BF8?

In the 70V3589S166BF8, CNTENL/R enables automatic increment of the internal address counter on each rising CLK edge, while REPEATL/R resets the counter to the last valid address loaded via ADSL/R. This enables hardware-accelerated burst reads/writes without software intervention. The counter is not initialized at power-up; a known address must be loaded via ADS during system initialization to establish the REPEAT anchor point.

What package type is used for the 70V3589S166BF8, and what are its mechanical dimensions?

The 70V3589S166BF8 uses a 208-pin fine-pitch Ball Grid Array (fpBGA) package with 1.0 mm ball pitch. Its body measures 17 mm × 17 mm × 1.4 mm. This fpBGA variant (package code BF) differs from the PQFP and 256-pin BGA options in the same family and is optimized for high-density, high-speed routing with low inductance and excellent thermal performance.

Is JTAG boundary-scan supported on the 70V3589S166BF8, and which signals are required?

Yes, the 70V3589S166BF8 fully supports IEEE 1149.1 JTAG boundary-scan. Required signals are TCK (Test Clock), TMS (Test Mode Select), TDI (Test Data In), TDO (Test Data Out), and TRST (Test Reset). These pins are dedicated and do not share functions with memory I/O or control signals, ensuring reliable test access without compromising memory operation.