Renesas 70V3589S166BF

Overview

70V3589S166BF from IDT (Integrated Device Technology) 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 166MHz with 3.6ns clock-to-data-out (pipelined mode), 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-based protocol accelerators.

For engineers reviewing the 70V3589S166BF datasheet, 70V3589S166BF pinout, 70V3589S166BF application, or 70V3589S166BF 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 (-40°C to +85°C) operation at 133MHz.

Technical Context

This device implements fully synchronous dual-port SRAM architecture with separate address, data, and control registers on both ports-enabling minimal 1.7ns setup and 0.5ns hold times at 166MHz. Its self-timed write logic and dual-cycle deselect (DCD) feature optimize cycle time in pipelined mode.

The memory supports independent I/O voltage configuration via OPTL/OPTR pins, allowing one port at 3.3V and the other at 2.5V simultaneously. Address counter functionality-including CNTEN, ADS, and REPEAT signals-enables burst-mode sequential addressing without external logic.

Key Specifications

Pinout & Package

70V3589S166BF is packaged in a 208-pin fine-pitch Ball Grid Array (fpBGA) with 0.8mm ball pitch and 15mm × 15mm body size. Pin functions are symmetrically distributed across left (L) and right (R) ports, with dedicated power/ground balls and JTAG test pads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-166AXC and AS7C3256A-166JC, the 70V3589S166BF uniquely supports mixed-voltage interfacing and offers JTAG testability in a compact fpBGA-making it optimal for space-constrained, safety-certifiable, and heterogeneous-voltage systems.

Availability

70V3589S166BF is available at Aetrix Electronics and suitable for telecom infrastructure, FPGA acceleration, industrial control, and avionics data concentration requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 70V3589S166BF 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, specializes in high-performance timing, memory, and interface ICs for communications, computing, and industrial markets.

The 70V3589S166BF belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for deterministic, low-latency inter-processor and FPGA-ASIC bridging in real-time networking and control systems.

FAQ

What is the maximum operating frequency of the 70V3589S166BF and under what conditions is it guaranteed?

The 70V3589S166BF is rated for 166MHz operation in commercial temperature range (0°C to +70°C) with 3.6ns clock-to-data-out in pipelined mode. This performance is guaranteed with VDD = 3.3V ±150mV, VDDQ = 3.3V or 2.5V per port, and proper signal integrity design including 1.7ns setup/0.5ns hold timing margins. Industrial-grade operation is specified up to 133MHz at -40°C to +85°C.

Does the 70V3589S166BF support independent I/O voltage selection on left and right ports?

Yes, the 70V3589S166BF supports independent I/O voltage selection via OPTL and OPTR pins. Setting OPTL to VIH (3.3V) configures the left port for 3.3V I/O operation with VDDQL = 3.3V; setting OPTR to VIL (0V) configures the right port for 2.5V I/O with VDDQR = 2.5V. Both ports can operate at the same or different voltages simultaneously.

How does the address counter function work on the 70V3589S166BF and what signals control it?

The 70V3589S166BF implements an internal address counter controlled by CNTENL/CNTENR, ADSL/ADSR, and REPEATL/REPEATR. When CNTENX = VIL, the counter advances on each CLKX rising edge. ADSX loads the current address into the counter; REPEATX resets the counter to the last ADSX-loaded address. This enables autonomous burst addressing without external logic-ideal for DMA or streaming applications.

What package options are available for the 70V3589S166BF and which one corresponds to the 'BF' suffix?

The 70V3589S166BF is offered in three packages: 208-pin PQFP (DRG208), 208-pin fpBGA (BF208/BFG208), and 256-pin BGA (BC256/BCG256). The 'BF' in the part number explicitly denotes the 208-pin fine-pitch Ball Grid Array (fpBGA) variant with 0.8mm ball pitch and 15mm × 15mm body size-verified in the official IDT documentation.

Is JTAG boundary-scan supported on the 70V3589S166BF and which pins are used?

Yes, the 70V3589S166BF supports IEEE 1149.1 JTAG boundary-scan. Dedicated pins include TCK (Test Clock), TMS (Test Mode Select), TDI (Test Data In), TDO (Test Data Out), and TRST (Test Reset). These signals are electrically compatible with standard JTAG controllers and enable in-system test, debug, and programming verification without requiring additional test fixtures.