Renesas 70V3599S133DRI

Overview

70V3599S133DRI 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 telecom line cards for real-time packet buffering and header processing.

For engineers reviewing the 70V3599S133DRI datasheet, 70V3599S133DRI pinout, 70V3599S133DRI application, or 70V3599S133DRI equivalent, key selection criteria include guaranteed 133MHz industrial-grade timing (4.2ns max access), JTAG IEEE 1149.1 compliance, dual-voltage I/O flexibility, and depth-expansion support via dual chip enables without external logic.

Technical Context

This device implements fully synchronous operation on both ports with registered address, data, and control inputs - delivering 1.7ns setup and 0.5ns hold times at 166MHz. Its internal architecture includes dual independent clock domains, separate byte-enable controls per 9-bit data group, and counter-based address generation with repeat functionality for burst transfers.

The memory supports automatic power-down via CE0/CE1 control, self-timed write cycles for minimal cycle time, and Dual Cycle Deselect (DCD) in pipelined mode. Each port's I/O voltage (3.3V or 2.5V) is independently selected via OPTL/OPTR pins, with core VDD fixed at 3.3V ±150mV.

Key Specifications

Pinout & Package

70V3599S133DRI 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 clock, address, data I/O, control, and power/ground terminals.

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 70V3599S133DRI uniquely combines per-port I/O voltage selection, IEEE 1149.1 JTAG, and dual output modes - enabling flexible integration into mixed-voltage, test-critical, and latency-sensitive embedded systems.

Availability

70V3599S133DRI is available at Aetrix Electronics and suitable for telecom infrastructure, military avionics, and industrial motion control applications requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for 70V3599S133DRI 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) designs high-performance memory and timing solutions for demanding communications and industrial applications.

The IDT70V3599 family targets high-bandwidth, low-latency dual-port memory needs in systems requiring concurrent access, deterministic timing, and mixed-voltage interoperability - especially in packet processing and real-time control.

FAQ

What is the maximum operating frequency and temperature grade supported by the 70V3599S133DRI?

The 70V3599S133DRI is rated for 133MHz operation across the full industrial temperature range of -40°C to +85°C. This is verified by its 7.5ns clock cycle time (tCYC2) and 4.2ns maximum clock-to-data valid delay (tCD2) under industrial conditions - making it suitable for ruggedized embedded systems where thermal stability is critical.

How does the 70V3599S133DRI support mixed-voltage system design?

The 70V3599S133DRI supports mixed-voltage design through independent OPTL and OPTR pins, allowing left and right ports to operate at either 3.3V or 2.5V I/O levels simultaneously. Corresponding VDDQL and VDDQR supplies must be set accordingly - enabling direct interfacing with heterogeneous logic families (e.g., 3.3V FPGA + 2.5V ASIC) without level shifters.

Does the 70V3599S133DRI include JTAG boundary-scan capability?

Yes, the 70V3599S133DRI integrates full IEEE 1149.1 JTAG boundary-scan support with TCK, TMS, TDO, TDI, and TRST pins. This enables in-system test, interconnect verification, and debug of memory interfaces - particularly valuable in dense, high-reliability PCBs where physical probe access is limited.

What are the key differences between pipelined and flow-through output modes in the 70V3599S133DRI?

In pipelined mode (PL/FT = VIH), data output is delayed by one clock cycle - providing deterministic, cycle-aligned timing ideal for multi-stage pipelines. In flow-through mode (PL/FT = VIL), data appears combinatorially after clock - minimizing latency for time-critical reads. The 70V3599S133DRI supports both modes per port, configurable independently via PL/FTL and PL/FTR pins.

Can the 70V3599S133DRI be used for depth expansion without additional logic?

Yes, the 70V3599S133DRI includes dual chip enables (CE0 and CE1) per port specifically to support depth expansion. By cascading CE signals across multiple devices - for example, using CE0 of Device 1 to enable CE1 of Device 2 - designers can expand memory depth (e.g., from 128K×36 to 256K×36) without external address decoders or logic gates.