Renesas 70V3599S133BFGI8

Overview

70V3599S133BFGI8 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 133MHz (7.5ns cycle time), supports selectable pipelined or flow-through output modes, features dual chip enables for depth expansion, and delivers 12Gbps aggregate bandwidth. It is used in high-throughput packet buffering and real-time digital signal processing systems requiring deterministic low-latency memory access.

For engineers reviewing the 70V3599S133BFGI8 datasheet, 70V3599S133BFGI8 pinout, 70V3599S133BFGI8 application, or 70V3599S133BFGI8 equivalent, key selection considerations include its 133MHz industrial-grade timing, independent 2.5V/3.3V I/O voltage support per port via OPT pins, JTAG IEEE 1149.1 compliance, and fpBGA-208 packaging with verified pin mapping for clock-synchronous burst data transfer.

Technical Context

This device implements fully synchronous dual-port operation with registered address, data, and control inputs on both ports-enabling 1.7ns setup and 0.5ns hold times at 166MHz. Its self-timed write architecture minimizes cycle time dependency on external timing margins, while dual-cycle deselect (DCD) in pipelined mode ensures predictable output disable behavior during chip deselection.

The memory integrates independent address counters per port with ADS strobe, CNTEN enable, and REPEAT latch functionality-allowing burst-mode sequential addressing without external counter logic. Each port supports separate byte enables (BE0–BE3) for 9-bit-wide data masking and configurable I/O voltage (2.5V or 3.3V) controlled by dedicated OPTL/OPTR pins, decoupling core VDD (3.3V) from interface supply domains.

Key Specifications

Pinout & Package

70V3599S133BFGI8 is packaged in a 208-pin fine-pitch Ball Grid Array (fpBGA) with 0.8mm ball pitch and 15mm × 15mm footprint. The package supports thermal dissipation requirements for sustained 133MHz operation in industrial environments and is compatible with standard reflow soldering profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-133AXC and AS7C312836B-133BIN, the 70V3599S133BFGI8 uniquely combines per-port I/O voltage flexibility, integrated address counter with repeat latch, and IEEE 1149.1 JTAG - making it optimal for compact, mixed-voltage, high-reliability embedded systems requiring minimal external logic.

Availability

70V3599S133BFGI8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, real-time DSP, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 70V3599S133BFGI8 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 Corporation (formerly Integrated Device Technology) is a global semiconductor leader specializing in microcontrollers, analog, power management, and high-performance memory solutions for automotive, industrial, and communications markets.

The IDT70V3599 family was designed specifically for high-bandwidth, low-latency dual-port memory applications in network processors, baseband units, and real-time signal processing systems demanding deterministic timing and industrial reliability.

FAQ

What is the maximum guaranteed operating frequency of the 70V3599S133BFGI8?

The 70V3599S133BFGI8 is rated for guaranteed operation at 133MHz across the full industrial temperature range (−40°C to +85°C), with a maximum clock cycle time of 7.5ns. This specification is validated under worst-case voltage (3.15V VDD) and temperature conditions, and applies to both pipelined and flow-through output modes. The part also supports 166MHz operation in commercial grade variants, but the 70V3599S133BFGI8 suffix explicitly denotes the 133MHz industrial version.

Does the 70V3599S133BFGI8 support independent I/O voltage selection on each port?

Yes, the 70V3599S133BFGI8 supports independent 2.5V or 3.3V I/O operation per port via dedicated OPTL and OPTR pins. When OPTL is set to VIL (0V), the left port's I/Os and controls operate at 2.5V levels and require VDDQL = 2.5V; when set to VIH (3.3V), they operate at 3.3V with VDDQL = 3.3V. The same applies independently to the right port via OPTR/VDDQR. This enables mixed-voltage system integration without external level shifters.

What is the function of the REPEAT pin on the 70V3599S133BFGI8?

The REPEAT pin (REPEATL/REPEATR) on the 70V3599S133BFGI8 latches the last valid address loaded via the corresponding ADS signal and resets the internal address counter to that value on the next clock edge. This enables rapid re-access to a known memory location without reloading the address bus - critical for circular buffer management and burst-mode data streaming. The REPEAT address is not preset at power-up; initialization via ADS is required before first use.

How does the 70V3599S133BFGI8 handle simultaneous read and write operations to the same memory location?

The 70V3599S133BFGI8 uses true dual-port SRAM cells that permit simultaneous read and write access to the same memory address from independent left and right ports. During such concurrent access, the write operation updates the memory cell, and the read operation returns the *pre-write* data value - ensuring deterministic, race-free behavior. This is guaranteed by the cell architecture and does not require external arbitration logic.

Is JTAG boundary-scan supported on the 70V3599S133BFGI8, and what standard does it comply with?

Yes, the 70V3599S133BFGI8 includes full IEEE 1149.1-compliant JTAG boundary-scan functionality with dedicated TCK, TMS, TDI, TDO, and TRST pins. This enables in-system testing of PCB interconnects, verification of solder joint integrity, and debugging of memory interface signal integrity - particularly valuable in high-density fpBGA layouts where physical probe access is impractical.