Renesas 70V3599S133DR

Overview

70V3599S133DR 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, and features dual 3.3V/2.5V I/O voltage capability per port - used in high-bandwidth packet buffering, telecom line cards, and FPGA co-processor memory interfaces.

For engineers reviewing the 70V3599S133DR datasheet, 70V3599S133DR pinout, 70V3599S133DR application, or 70V3599S133DR equivalent, key selection criteria include guaranteed 133MHz operation across industrial temperature range (−40°C to +85°C), JTAG IEEE 1149.1 compliance, dual chip enable for depth expansion, and independent VDDQ/OPT control per port enabling mixed-voltage system integration.

Technical Context

This device implements fully synchronous dual-port operation with registered address, data, and control inputs on both ports, achieving 3.6ns clock-to-data-out in pipelined mode and 1.7ns setup time at 166MHz. Its self-timed write architecture minimizes cycle time dependency on external timing margins.

The memory integrates separate byte enables (BE0–BE3) for 9-bit-wide data lanes, Dual Cycle Deselect (DCD) for pipelined outputs, and independent counter/REPEAT logic per port - enabling burst-addressed streaming without external address generation logic.

Key Specifications

Pinout & Package

70V3599S133DR is available in 208-pin PQFP (DRG208), 208-pin fpBGA (BF208), and 256-pin BGA (BC256) packages. This part uses the DRG208 (208-pin Plastic Quad Flatpack) variant with 28mm × 28mm body and 0.65mm lead pitch.

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 70V3599S133DR uniquely delivers per-port 2.5V/3.3V I/O selection, integrated address counter with REPEAT, and IEEE 1149.1 JTAG - making it the only option for mixed-voltage, burst-streaming, and production-testable implementations.

Availability

70V3599S133DR is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, avionics data recording, and FPGA-based signal processing applications requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for 70V3599S133DR 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 70V3599S133DR belongs to IDT's high-speed synchronous dual-port SRAM family, designed specifically for deterministic, low-latency shared-memory architectures in telecom line cards, test equipment, and real-time embedded systems.

FAQ

What is the guaranteed maximum operating frequency of the 70V3599S133DR across its full temperature range?

The 70V3599S133DR is rated for guaranteed 133MHz operation (7.5ns cycle time) over the full industrial temperature range of −40°C to +85°C. This specification is validated per AC Electrical Characteristics Table 11 in the official datasheet and applies to both pipelined and flow-through output modes under specified supply and loading conditions.

Does the 70V3599S133DR support mixed I/O voltages - for example, 3.3V on the left port and 2.5V on the right port?

Yes, the 70V3599S133DR supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL = VIH (3.3V) and OPTR = VIL (0V) configures the left port for 3.3V signaling (with VDDQL = 3.3V) and the right port for 2.5V signaling (with VDDQR = 2.5V), enabling direct interfacing with heterogeneous logic families.

How does the Dual Cycle Deselect (DCD) feature function in the 70V3599S133DR, and why is it important?

DCD requires two consecutive clock cycles with chip enable deasserted (CE0X = VIH or CE1X = VIL) before the port enters power-down mode. This prevents metastability during rapid enable/disable transitions in depth-expanded configurations. In the 70V3599S133DR, DCD ensures reliable deselection timing when cascading multiple devices without additional glue logic.

Can the 70V3599S133DR perform simultaneous read and write operations to the same memory address?

Yes, the 70V3599S133DR uses true dual-port SRAM cells that allow concurrent read from one port and write to the same address on the other port. This capability is fundamental to its architecture and is explicitly confirmed in the Functional Block Diagram and Description sections of the datasheet - enabling lock-free shared memory in real-time systems.

What JTAG capabilities does the 70V3599S133DR provide, and how are they implemented?

The 70V3599S133DR implements full IEEE 1149.1 JTAG boundary-scan with dedicated TCK, TMS, TDI, TDO, and TRST pins. It supports instruction register scan, data register scan, and boundary-scan testing of all I/O pins - verified in the Pin Names table and Truth Table II. This enables in-system test, interconnect verification, and programming support without requiring external test fixtures.