Renesas 70V3599S133BC

Overview

70V3599S133BC 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 real-time packet buffering for telecom line cards and FPGA co-processor memory interfaces.

For engineers reviewing the 70V3599S133BC datasheet, 70V3599S133BC pinout, 70V3599S133BC application, or 70V3599S133BC equivalent, key selection criteria include guaranteed 133MHz operation across industrial temperature (−40°C to +85°C), independent 2.5V/3.3V I/O voltage selection per port via OPT pins, JTAG IEEE 1149.1 compliance, and support for burst-mode unidirectional/bidirectional data flow with automatic power-down control.

Technical Context

This device implements full synchronous operation on both ports with registered address, data, byte enable, and control inputs-enabling minimal 1.7ns setup and 0.5ns hold times at 166MHz. Its dual-port memory array allows concurrent access without arbitration logic, while the integrated address counter with CNTEN/REPEAT controls supports sequential burst addressing without external sequencing logic.

The device supports two distinct output timing architectures: pipelined mode (6ns cycle, 3.6ns clock-to-data) for maximum throughput, and flow-through mode (25ns cycle, 15ns clock-to-data) for low-latency deterministic access. Dual-cycle deselect (DCD) in pipelined mode ensures clean bus release during rapid enable transitions.

Key Specifications

Pinout & Package

70V3599S133BC is available in a 208-pin fine-pitch Ball Grid Array (fpBGA) package with 0.8mm ball pitch and 15mm × 15mm body size. Pin functions are symmetrically distributed across left (L) and right (R) ports, with dedicated VDD, VDDQ, and VSS balls for robust power integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-133AXC and AS7C33128P33Z-133BIN, the 70V3599S133BC uniquely supports independent 2.5V/3.3V I/O per port and IEEE 1149.1 JTAG-making it optimal for mixed-voltage, high-reliability, and test-intensive applications where flexibility and debug capability are critical.

Availability

70V3599S133BC is available at Aetrix Electronics and suitable for telecom infrastructure, FPGA-accelerated computing, radar signal processing, and industrial motion control applications requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for 70V3599S133BC 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, analog, and embedded processing solutions for industrial, automotive, and communications markets.

The 70V3599S133BC belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for real-time, low-latency shared-memory applications in networking equipment, test instrumentation, and digital signal processing systems.

FAQ

What is the guaranteed operating temperature range for the 70V3599S133BC?

The 70V3599S133BC is rated for industrial temperature operation from −40°C to +85°C, with all AC and DC specifications fully guaranteed across this range at 133MHz. This makes it suitable for deployment in harsh environments such as base station equipment, factory automation controllers, and outdoor radar systems where ambient thermal stability cannot be assured.

Does the 70V3599S133BC support mixed-voltage operation between its left and right ports?

Yes, the 70V3599S133BC supports independent I/O voltage selection per port: OPTL configures the left port's VDDQL (2.5V or 3.3V), and OPTR configures the right port's VDDQR. This allows one port to interface with a 2.5V FPGA bank while the other connects to a 3.3V microcontroller-eliminating external level-shifting components and reducing BOM cost and board area.

How does the dual chip enable (CE0/CE1) architecture of the 70V3599S133BC simplify memory depth expansion?

The 70V3599S133BC uses dual chip enables per port (CE0L/CE1L and CE0R/CE1R) with AND-logic gating, allowing direct cascading of multiple devices without external decode logic. For example, connecting CE0 of Device 2 to CE1 of Device 1 enables seamless 2× depth expansion-reducing gate count, propagation delay, and routing complexity in high-density memory subsystems.

What is the purpose of the REPEAT and CNTEN signals in the 70V3599S133BC address counter?

In the 70V3599S133BC, CNTEN enables automatic address increment on each clock edge, while REPEAT resets the internal counter to the last valid address loaded via ADS. This combination supports efficient burst-mode sequential access-such as streaming video frames or sensor data buffers-without requiring the controller to generate every address, thereby offloading timing-critical address generation from the host processor.

Can the 70V3599S133BC operate in both pipelined and flow-through output modes simultaneously on different ports?

Yes, the 70V3599S133BC allows independent configuration: PL/FTL sets the left port's output mode (VIH = pipelined, VIL = flow-through), and PL/FTR does the same for the right port. This enables hybrid system architectures-for instance, a low-latency flow-through read port feeding a real-time display engine while a high-throughput pipelined port handles background data logging-maximizing overall system efficiency.