Renesas 70V7599S133DR

Overview

70V7599S133DR from IDT (Integrated Device Technology) is a high-speed, 128K × 36 synchronous bank-switchable dual-ported SRAM with true SRAM core architecture, 4 Mbit capacity, 133 MHz operation (7.5 ns clock cycle), and independent 3.3V/2.5V I/O voltage selection per port. It enables concurrent read/write access to separate 2K × 36 memory banks in telecom switching fabric and packet buffer applications.

For engineers reviewing the 70V7599S133DR datasheet, 70V7599S133DR pinout, 70V7599S133DR application, or 70V7599S133DR equivalent, key selection criteria include bank-switchable arbitration control, pipelined/flow-through output mode selection, JTAG IEEE 1149.1 compliance, dual chip enable for depth expansion, and independent VDDQ/OPT configuration per port.

Technical Context

This device implements a bank-switchable dual-port architecture with 64 independent 2K × 36 banks, where bank access is controlled directly via BA0–BA5 address pins on each port. Conflicting simultaneous accesses to the same bank by left and right ports result in invalid data-requiring explicit software/hardware coordination.

It supports full synchronous operation on both ports with register-controlled inputs (address, data, byte enables, controls), enabling tight timing margins: 1.5 ns setup / 0.5 ns hold at 133 MHz. The self-timed write mechanism maintains fast cycle time without external wait-state logic.

Key Specifications

Pinout & Package

70V7599S133DR is packaged in a 208-pin PQFP (DR208), with 15 mm × 15 mm body, 0.65 mm lead pitch, and exposed pad for thermal dissipation. Pin functions are fully symmetric across left (L) and right (R) ports.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-133AXC and AS7C3256B-133JCIN, the 70V7599S133DR uniquely delivers bank-switchable arbitration, per-port I/O voltage selection, and pipelined/flow-through mode - enabling lower-power, higher-bandwidth, and more flexible system-level buffer partitioning.

Availability

70V7599S133DR is available at Aetrix Electronics and suitable for telecom switching fabric, network packet buffer, and industrial real-time controller applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for 70V7599S133DR 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

Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions for communications and computing markets.

The 70V7599S product line was designed specifically for high-bandwidth, low-latency dual-ported memory applications in telecom infrastructure, enterprise networking, and real-time industrial control systems.

FAQ

What is the maximum operating frequency of the 70V7599S133DR?

The 70V7599S133DR is rated for 133 MHz operation, corresponding to a 7.5 ns clock cycle time in pipelined mode. This speed grade is validated for both commercial (0°C to +70°C) and industrial (−40°C to +85°C) temperature ranges, and applies when VDDQ is configured for 3.3V operation via the OPT pin.

How does bank-switching work in the 70V7599S133DR?

The 70V7599S133DR divides its 4 Mbit array into 64 independent 2K × 36 banks. Each port selects a bank using its dedicated BA0–BA5 pins. If both ports attempt to access the same bank simultaneously, neither access is valid and data corruption may occur - requiring explicit software or hardware arbitration to ensure BA0L–BA5L ≠ BA0R–BA5R.

Can the left and right ports of the 70V7599S133DR operate at different I/O voltages?

Yes. The 70V7599S133DR supports independent I/O voltage selection per port: OPTL sets left-port VDDQL (3.3V or 2.5V), and OPTR sets right-port VDDQR (3.3V or 2.5V). This allows mixed-voltage system integration - for example, interfacing a 3.3V FPGA on the left port and a 2.5V ASIC on the right port - without external level shifters.

What is the purpose of the CNTEN and REPEAT signals in the 70V7599S133DR?

CNTEN enables the internal address counter to auto-increment on each clock edge, supporting burst-mode sequential access. REPEAT resets the counter to the last valid address loaded via ADS - enabling rapid re-reads of a block (e.g., packet headers). Both signals operate independently per port and are unaffected by CE0/CE1 state.

Does the 70V7599S133DR support JTAG boundary-scan testing?

Yes. The 70V7599S133DR implements full IEEE 1149.1 JTAG boundary-scan functionality via TDI, TDO, TCK, TMS, and TRST pins. This enables in-system test, interconnect verification, and debug of multi-device SRAM configurations - particularly valuable in densely populated telecom line cards.