Renesas 7130SA35TF

Overview

7130SA35TF from IDT (Integrated Device Technology) is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 35 ns maximum access time, TTL-compatible 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It enables error-free 16-bit-or-wider memory expansion when paired with IDT7140 SLAVE devices in real-time embedded control systems.

For engineers reviewing the 7130SA35TF datasheet, 7130SA35TF pinout, 7130SA35TF application, or 7130SA35TF equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT flag operation, dual-port power-down modes, and package-specific DC/AC electrical characteristics - all confirmed for the SA-grade 35 ns speed bin in TQFP-64.

Technical Context

The 7130SA35TF implements fully asynchronous dual-port operation with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves simultaneous access contention via BUSY flag assertion, with tBAA/tBDA ≤ 20 ns and tAPS = 5 ns setup requirement for deterministic priority resolution.

As a MASTER-only device, it features open-drain BUSYL/BUSYR outputs requiring external pull-up resistors, INTL/INTR interrupt flags for inter-port signaling, and R/W-controlled or CE-controlled write cycles with tWP = 25 ns minimum pulse width. It does not support battery backup - that function is exclusive to LA variants.

Key Specifications

Pinout & Package

7130SA35TF is packaged in a 64-pin Thin Quad Flat Pack (TQFP) with 0.5 mm pitch, designated PNG64 per IDT documentation. Pin numbering follows standard counter-clockwise convention from index mark.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1371DV33-166AXC and IDT7140SA35TF, the 7130SA35TF uniquely integrates arbitration and interrupt logic in a 5V, 35 ns industrial-grade package - making it irreplaceable for deterministic dual-CPU control where external logic must be minimized.

Availability

7130SA35TF is available at Aetrix Electronics and suitable for industrial motion control, avionics data concentrators, automated test equipment, and real-time dual-processor communication systems requiring stable component supply across extended product lifecycles.

Supply support for 7130SA35TF 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

IDT (Integrated Device Technology) is a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance silicon solutions, now part of Renesas Electronics.

The IDT7130/7140 family was designed specifically for deterministic dual-processor memory sharing in industrial, military, and aerospace systems - prioritizing low-latency arbitration, robust 5V operation, and long-term manufacturability.

FAQ

What is the maximum operating frequency supported by the 7130SA35TF?

The 7130SA35TF does not operate on a clock; it is fully asynchronous. Its performance is defined by timing parameters: tRC (read cycle time) and tWC (write cycle time) are both 35 ns maximum. This supports effective data throughput up to ~28.6 MHz in continuous sequential access, but actual system bandwidth depends on address/control signal timing margins and bus loading.

Does the 7130SA35TF support battery backup for data retention?

No. Battery backup and 2V data retention are exclusive to LA-grade variants (e.g., 7130LA35TF). The 7130SA35TF is an SA-grade part optimized for higher-speed industrial operation and does not include the low-voltage retention circuitry. Its minimum VCC is 4.5 V, and data is lost below that threshold.

How do BUSYL and BUSYR behave during address contention on the 7130SA35TF?

When both ports attempt access to the same memory location, the 7130SA35TF's on-chip arbitration asserts the BUSY flag on the losing port within tBAA ≤ 20 ns. BUSYL and BUSYR are open-drain outputs requiring external pull-up resistors; they go LOW to inhibit writes on the contending port. Both cannot be LOW simultaneously - priority is determined by tAPS (5 ns setup) and signal arrival order.

Can the 7130SA35TF be used as a standalone 8-bit memory without a SLAVE device?

Yes. The 7130SA35TF functions fully as a stand-alone 1K × 8 dual-port SRAM. Its MASTER designation refers to its capability to coordinate with IDT7140 SLAVE devices for wider data buses (e.g., 16-bit), not a dependency. All dual-port features - independent reads/writes, arbitration, interrupts - operate identically in standalone mode.

What are the key differences between the 7130SA35TF and 7140SA35TF?

The 7130SA35TF is a MASTER device with on-chip arbitration logic, BUSY outputs, and INT flags. The 7140SA35TF is a SLAVE device: it has BUSY inputs (not outputs), no arbitration logic, and no interrupt generation capability. They share identical speed (35 ns), organization (1K × 8), and package options, but are functionally asymmetric and intended for complementary use.