Renesas 70V7519S133BCI

Overview

70V7519S133BCI from Integrated Device Technology is a high-speed 256K × 36 (9 Mbit) synchronous bank-switchable dual-ported SRAM with independent left/right ports, 133 MHz operation (4.2 ns max access), industrial temperature range (–40°C to +85°C), and selectable 2.5 V/3.3 V I/O interface per port. It enables concurrent memory access in telecom packet buffers and real-time DSP data exchange.

For engineers reviewing the 70V7519S133BCI datasheet, 70V7519S133BCI pinout, 70V7519S133BCI application, or 70V7519S133BCI equivalent, key selection criteria include dual-port bank-switching control, pipelined/flow-through output mode selection, JTAG IEEE 1149.1 compliance, and 256-pin BGA package compatibility for high-density routing in networking ASIC interfaces.

Technical Context

The 70V7519S133BCI implements a true SRAM core-not traditional dual-port-partitioned into 64 independent 4K × 36 banks, each accessible via dedicated BA0–BA5 address lines per port. Bank arbitration is user-controlled; simultaneous access to the same bank by both ports invalidates both operations.

It supports full synchronous operation on both ports with register-controlled inputs (address, data, control), enabling 5 ns cycle time at 200 MHz (14 Gbps aggregate bandwidth). The device features separate byte enables (BE0–BE3), counter enable/repeat logic, and dual chip enables (CE0/CE1) for seamless depth expansion without external logic.

Key Specifications

Pinout & Package

70V7519S133BCI is housed in a 256-pin BGA (BC256) package with 17 mm × 17 mm footprint, 1.0 mm ball pitch, and 1.4 mm height. Power delivery uses distributed VDD (3.3 V core), VDDQ (2.5 V/3.3 V I/O), and VSS balls; I/Os are arranged in symmetrical left/right port groups with dedicated bank address, control, and strobe pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-133AXC and AS7C33128A-133BIN, the 70V7519S133BCI uniquely delivers bank-switchable concurrency, per-port I/O voltage flexibility, and IEEE 1149.1 testability - critical for new-generation telecom and industrial control designs demanding deterministic latency and mixed-voltage interoperability.

Availability

70V7519S133BCI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and medical imaging systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for 70V7519S133BCI 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 70V7519S133BCI belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for applications demanding concurrent, low-latency memory access in packet processing, DSP, and real-time control systems.

FAQ

What is the maximum operating frequency of the 70V7519S133BCI?

The 70V7519S133BCI is rated for 133 MHz operation, corresponding to a 7.5 ns clock cycle time in pipelined mode and 4.2 ns maximum access time in flow-through mode. This speed grade is validated for both commercial and industrial temperature ranges and requires VDDQ = 3.3 V (i.e., OPTL/OPTR = VIH) per port.

Does the 70V7519S133BCI support mixed-voltage operation between its two ports?

Yes, the 70V7519S133BCI supports independent I/O voltage selection per port: OPTL configures the left port for 2.5 V or 3.3 V operation, and OPTR does the same for the right port. This allows one port to interface with a 2.5 V ASIC while the other connects to a 3.3 V FPGA, eliminating external level shifters.

How does bank-switching prevent memory access conflicts in the 70V7519S133BCI?

The 70V7519S133BCI divides memory into 64 independent 4K × 36 banks. Each port selects its target bank via BA0–BA5 pins. If both ports attempt simultaneous access to the same bank, neither access is valid and data corruption may occur. Users must ensure BA0L–BA5L ≠ BA0R–BA5R in real-time software or hardware arbitration logic.

What is the purpose of the REPEATL and REPEATR signals in the 70V7519S133BCI?

REPEATL and REPEATR reset the internal address counter to the last valid address loaded via ADSL or ADSR, respectively. This enables rapid sequential burst access without reissuing full addresses - critical for streaming applications like packet header parsing or image line buffering. The counter advances across bank boundaries automatically.

Is the 70V7519S133BCI pin-compatible with other speed grades in the 70V7519S family?

No, the 70V7519S133BCI is not pin-compatible with faster variants like 70V7519S166BCI or 70V7519S200BCI. While all share the BC256 package, the 133 MHz version is qualified only for industrial temperature with VDDQ = 3.3 V, whereas higher-speed grades require stricter voltage margins and have different AC timing validation - direct substitution is not supported.