Renesas 70V7519S133BFI8

Overview

70V7519S133BFI8 from IDT (Integrated Device Technology) is a high-speed, synchronous, bank-switchable dual-ported SRAM with 256K × 36 (9 Mbit) organization, 64 independent 4K × 36 banks, 133 MHz max operation, industrial temperature range (−40°C to +85°C), and fpBGA-208 package. It enables concurrent read/write access on two independent ports in telecom switching fabric and packet buffer applications.

For engineers reviewing the 70V7519S133BFI8 datasheet, 70V7519S133BFI8 pinout, 70V7519S133BFI8 application, or 70V7519S133BFI8 equivalent, key selection criteria include dual-port bandwidth at 133 MHz, selectable 2.5V/3.3V I/O per port, pipelined vs. flow-through output mode, bank-switching control via BA[0:5], and JTAG IEEE 1149.1 compliance for boundary scan.

Technical Context

This device implements a true SRAM core-not traditional dual-port-enabling bank-switchable architecture where each port independently selects one of 64 banks via dedicated BA[0:5] pins. Conflicts occur only when both ports target identical banks simultaneously, requiring software coordination.

It supports full synchronous operation on both ports with register-controlled inputs (address, data, control), enabling tight timing: 1.5 ns setup and 0.5 ns hold at 133 MHz. Output mode (pipelined or flow-through) is selected per port via PL/FTL and PL/FTR pins, directly affecting tCD (clock-to-data) latency and cycle time.

Key Specifications

Pinout & Package

Package: 208-pin fine-pitch Ball Grid Array (fpBGA), body size 15 mm × 15 mm × 1.4 mm, 0.8 mm ball pitch. All VDD pins require 3.3 V ±150 mV; VDDQ pins must match OPT pin voltage (2.5 V or 3.3 V).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-133AXC and AS7C3256B-133JCIN, the 70V7519S133BFI8 uniquely delivers per-port I/O voltage selection, bank-switching control, and dual CE-based depth expansion - critical for heterogeneous, high-reliability embedded systems.

Availability

70V7519S133BFI8 is available at Aetrix Electronics and suitable for telecom switching fabric, industrial PLC data exchange, and radar signal processing buffer applications requiring stable component supply, long-term industrial temperature support, and verified fpBGA-208 sourcing.

Supply support for 70V7519S133BFI8 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 70V7519S product line was designed for high-bandwidth, low-latency dual-port memory applications in telecom infrastructure, military/aerospace systems, and real-time industrial control where deterministic access and voltage flexibility are essential.

FAQ

What is the maximum operating frequency of the 70V7519S133BFI8, and under what conditions is it guaranteed?

The 70V7519S133BFI8 is rated for 133 MHz maximum operation in both commercial and industrial temperature ranges. This speed grade is guaranteed with VDD = 3.3 V ±150 mV, VDDQ = 3.3 V (i.e., OPTL/OPTR = VIH), and ambient temperature from −40°C to +85°C. At 133 MHz, it achieves a 7.5 ns clock cycle time in pipelined mode and 4.2 ns clock-to-data (tCD2) latency.

Does the 70V7519S133BFI8 support independent I/O voltage levels on its left and right ports?

Yes, the 70V7519S133BFI8 supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL = VIH configures the left port for 3.3 V I/O (requiring VDDQL = 3.3 V), while OPTL = VIL configures it for 2.5 V (requiring VDDQL = 2.5 V). The same applies independently to the right port via OPTR and VDDQR. This enables mixed-voltage system integration without external level shifters.

How does bank-switching work in the 70V7519S133BFI8, and what happens if both ports access the same bank?

The 70V7519S133BFI8 organizes memory into 64 independent 4K × 36 banks, selected per port via BA0–BA5 inputs. When both ports assert identical bank addresses simultaneously, neither access is valid: writes may corrupt data, and reads return invalid output. System firmware must coordinate bank allocation to avoid conflicts - no hardware arbitration is provided.

What are the key timing differences between pipelined and flow-through output modes in the 70V7519S133BFI8?

In pipelined mode (PL/FTL = VIH), the 70V7519S133BFI8 delivers 4.2 ns clock-to-data (tCD2) latency and 7.5 ns minimum cycle time at 133 MHz - ideal for throughput-critical applications. In flow-through mode (PL/FTL = VIL), it provides zero-cycle latency (tCD1 = 15 ns) but requires longer 25 ns cycles - suited for real-time deterministic reads where immediate data availability matters more than bandwidth.

Is JTAG boundary scan supported on the 70V7519S133BFI8, and which pins are used?

Yes, the 70V7519S133BFI8 fully supports IEEE 1149.1 JTAG boundary scan. Required pins are TDI (pin A4), TDO (pin A3), TCK (pin T2), TMS (pin P3), and TRST (pin R3), all located on the fpBGA-208 package. These signals operate at the same voltage as the associated port's I/O domain (2.5 V or 3.3 V depending on OPTL/OPTR setting).