Renesas 70V7519S133DRI

Overview

70V7519S133DRI from IDT (Integrated Device Technology) is a high-speed, synchronous, bank-switchable dual-ported SRAM with 256K × 36-bit organization (9 Mbit total), designed for low-latency, concurrent read/write access across two independent ports. It delivers 4.2 ns clock-to-data-out in flow-through mode at 133 MHz, supports selectable 2.5 V or 3.3 V I/O interfaces per port, and operates over the industrial temperature range (–40°C to +85°C). It is used in packet buffering, telecommunications switching fabric, and real-time DSP co-processing where deterministic timing and port arbitration are critical.

For engineers reviewing the 70V7519S133DRI datasheet, 70V7519S133DRI pinout, 70V7519S133DRI application, or 70V7519S133DRI equivalent, key selection considerations include its bank-switchable architecture enabling non-conflicting dual-port access, pipelined/flow-through output mode selection, JTAG IEEE 1149.1 compliance, and dual chip-enable support for seamless depth expansion without external logic.

Technical Context

The 70V7519S133DRI implements a true synchronous SRAM core partitioned into 64 independent 4K × 36 banks, controlled via dedicated BA0–BA5 address lines per port. Bank arbitration is user-managed-simultaneous access to the same bank by both ports invalidates both operations, requiring explicit software/hardware coordination.

Each port features fully registered control, address, and data paths with sub-nanosecond setup/hold margins (1.5 ns setup, 0.5 ns hold @ 200 MHz), self-timed write capability, and separate byte enables (BE0–BE3) supporting 9-bit byte granularity. The device supports JTAG boundary-scan and offers independent OPTL/OPTR pins to configure each port's I/O voltage (2.5 V or 3.3 V) while maintaining a fixed 3.3 V core supply (VDD).

Key Specifications

Pinout & Package

70V7519S133DRI is housed in a 208-pin fine-pitch Ball Grid Array (fpBGA, package code BF208) with 0.8 mm ball pitch and 15 mm × 15 mm footprint. Power and ground balls are distributed across the array for low-inductance decoupling; VDD (3.3 V core) and VDDQ (I/O supply) pins are segregated per port to support independent voltage configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-133AXC and AS7C3256A-133JCIN, the 70V7519S133DRI uniquely combines bank-switchable architecture (enabling deterministic non-contentious access), per-port I/O voltage selection (2.5 V/3.3 V), and hardware address counter-making it optimal for tightly coupled, mixed-voltage, real-time embedded systems where latency predictability and interface flexibility are design-critical.

Availability

70V7519S133DRI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, and radar signal processing applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial-temperature performance.

Supply support for 70V7519S133DRI 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, computing, and industrial markets.

The 70V7519S133DRI belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered specifically for deterministic, low-jitter memory access in packet-switched networks, real-time control systems, and digital signal processing subsystems.

FAQ

What is the maximum operating frequency of the 70V7519S133DRI?

The 70V7519S133DRI is rated for 133 MHz operation across the industrial temperature range (–40°C to +85°C). Its minimum clock cycle time is 7.5 ns in pipelined mode and 25 ns in flow-through mode, with guaranteed 4.2 ns clock-to-data-out delay in flow-through configuration. This speed grade is validated for both commercial and industrial grades, unlike the 166 MHz variant which is unavailable in the BF208 package at industrial temperature.

Does the 70V7519S133DRI support mixed I/O voltages on its two ports?

Yes, the 70V7519S133DRI supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL to VIH (3.3 V) configures the left port for 3.3 V operation with VDDQL = 3.3 V, while setting OPTR to VIL (0 V) configures the right port for 2.5 V operation with VDDQR = 2.5 V. Both ports can operate at the same or different voltages simultaneously, enabling direct interfacing with heterogeneous logic families.

How does bank-switching work in the 70V7519S133DRI, and what happens if both ports access the same bank?

The 70V7519S133DRI divides its 9 Mbit array into 64 independent 4K × 36 banks, selected by BA0–BA5 on each port. If both ports assert identical bank addresses (BA0L–BA5L = BA0R–BA5R) simultaneously, neither access is valid: reads return indeterminate data, and writes may corrupt memory contents. This behavior requires explicit software or hardware coordination to avoid bank conflicts-unlike traditional dual-port SRAMs with internal arbitration.

What are the key timing advantages of the 70V7519S133DRI's registered interface?

The 70V7519S133DRI uses fully registered inputs (address, control, data) with tight timing margins: 1.5 ns setup and 0.5 ns hold times at 200 MHz. This eliminates routing skew sensitivity and simplifies PCB layout for high-speed designs. Combined with self-timed write and pipelined output mode, it achieves 5 ns minimum cycle time and 3.4 ns clock-to-data-out-critical for burst-oriented applications like packet forwarding and DSP buffering.

Is JTAG boundary-scan supported on the 70V7519S133DRI, and which pins are used?

Yes, the 70V7519S133DRI fully complies with IEEE 1149.1 JTAG boundary-scan. It uses four dedicated pins: TCK (Test Clock), TMS (Test Mode Select), TDI (Test Data In), and TDO (Test Data Out), plus TRST (Test Reset). These signals are assigned to fixed balls in the BF208 package and enable comprehensive interconnect testing and in-system debugging without requiring additional test fixtures.