Renesas 70V3599S166BFG8

Overview

70V3599S166BFG8 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 (6ns cycle time), delivers 12Gbps aggregate bandwidth, supports selectable pipelined or flow-through output modes, and features dual chip enables for seamless depth expansion in telecom packet buffers.

For engineers reviewing the 70V3599S166BFG8 datasheet, 70V3599S166BFG8 pinout, 70V3599S166BFG8 application, or 70V3599S166BFG8 equivalent, key selection criteria include its 3.3V core / 2.5V or 3.3V I/O flexibility per port, JTAG IEEE 1149.1 compliance, industrial-grade timing stability at 133MHz, and support for burst-mode unidirectional/bidirectional data flow in network switching ASIC interfaces.

Technical Context

This device implements fully synchronous operation on both ports with registered address, control, and data inputs-enabling minimal 1.7ns setup and 0.5ns hold times at 166MHz. Its self-timed write architecture eliminates external wait-state logic, while dual-cycle deselect (DCD) in pipelined mode ensures deterministic bus release timing during rapid port switching.

The memory integrates independent address counters per port with repeat and enable controls, allowing automatic sequential addressing without host CPU intervention. Each port supports separate VDDQ supply (2.5V or 3.3V) via dedicated OPT pins, enabling mixed-voltage system interfacing without level shifters-critical for legacy-to-modern bus bridging in FPGA-based protocol accelerators.

Key Specifications

Pinout & Package

208-pin fine-pitch Ball Grid Array (fpBGA), 15mm × 15mm × 1.4mm body, 0.8mm ball pitch. All VDD pins require 3.3V ±150mV; 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 CY7C1362BV33-166BZI and AS7C3256B-166JIN, the 70V3599S166BFG8 uniquely supports independent 2.5V/3.3V I/O per port and includes IEEE 1149.1 JTAG-making it the only option suitable for mixed-voltage, test-critical, high-bandwidth embedded networking applications.

Availability

70V3599S166BFG8 is available at Aetrix Electronics and suitable for telecom infrastructure, FPGA co-processing, and industrial motion control requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for 70V3599S166BFG8 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 IDT70V3599 product line was engineered for ultra-low-latency, high-bandwidth dual-port memory applications in network processors, baseband units, and real-time signal processing systems demanding deterministic timing and flexible voltage interfacing.

FAQ

What is the maximum operating frequency of the 70V3599S166BFG8?

The 70V3599S166BFG8 is rated for 166MHz operation with a 6ns clock cycle time in pipelined mode. This specification applies only to the commercial-grade version; the industrial variant (70V3599S133BFG8) is qualified up to 133MHz. The 166MHz rating is guaranteed under recommended DC conditions (VDD = 3.3V ±150mV, VDDQ = 3.3V or 2.5V) and ambient temperatures from 0°C to +70°C.

Does the 70V3599S166BFG8 support mixed-voltage operation between its two ports?

Yes, the 70V3599S166BFG8 supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL = VIH configures the left port for 3.3V I/O levels (requiring VDDQL = 3.3V), while OPTR = VIL configures the right port for 2.5V I/O (requiring VDDQR = 2.5V). This enables direct interfacing with heterogeneous logic families without external level shifters.

What package type is used for the 70V3599S166BFG8?

The 70V3599S166BFG8 uses a 208-pin fine-pitch Ball Grid Array (fpBGA) package designated BFG8, with a 15mm × 15mm body and 0.8mm ball pitch. This package is distinct from the 208-pin PQFP (DRG208) and 256-pin BGA (BCG256) variants offered in the same family-BFG8 is optimized for high-density, thermally efficient layouts in networking equipment.

How does the dual-cycle deselect (DCD) feature function in pipelined mode on the 70V3599S166BFG8?

In pipelined mode (PL/FTX = VIH), chip enables CE0X and CE1X are double-buffered, meaning a change in enable state takes two clock cycles to propagate through the internal logic. This ensures that bus drivers enter high-impedance state cleanly after two cycles, preventing glitches during rapid port switching or depth-expansion configurations where multiple devices share control lines.

Is JTAG boundary-scan supported on the 70V3599S166BFG8?

Yes, the 70V3599S166BFG8 integrates a fully compliant IEEE 1149.1 JTAG TAP controller with dedicated TCK, TMS, TDI, TDO, and TRST pins. This enables boundary-scan testing of PCB interconnects, in-system programming verification, and visibility into internal register states during system debug-critical for validating memory subsystems in complex telecom hardware.