Renesas 7130SA100P

Overview

7130SA100P from IDT is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 100ns maximum read/write cycle 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 control systems requiring concurrent access.

For engineers reviewing the 7130SA100P datasheet, 7130SA100P pinout, 7130SA100P application, or 7130SA100P equivalent, key selection criteria include BUSY flag timing (tBDD ≤ 65ns), port-to-port arbitration priority setup (tAPS = 5ns), active/standby current specs (ICC = 110mA typ., ISB1 = 20mA max), and compatibility with 48-pin DIP, LCC, or flatpack packages.

Technical Context

The 7130SA100P implements fully asynchronous dual-port operation with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves contention via BUSY output assertion when address matches occur between ports, with tAPS = 5ns minimum priority setup time ensuring deterministic port win resolution.

It supports R/W-controlled and CE-controlled write cycles, features open-drain BUSY outputs requiring external pull-up resistors, and provides INT/INTR flags for inter-port communication. The device operates only from a single 5V ±10% supply and retains full functionality across –40°C to +85°C without derating.

Key Specifications

Pinout & Package

7130SA100P is available in 48-pin ceramic flatpack (FP48), 48-pin LCC (LC48), and 48-pin plastic DIP (PDG48/SB48) packages. Pin functions are identical across these variants per IDT documentation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C135-100AXC and AS7C31025B-10JCN, the 7130SA100P uniquely integrates arbitration logic and open-drain BUSY outputs-enabling true hardware-managed concurrent access without external components, which is essential for deterministic real-time systems.

Availability

7130SA100P is available at Aetrix Electronics and suitable for real-time motion control, dual-CPU communication buffers, redundant PLC memory modules, and avionics data logger interfaces requiring stable component supply across extended product lifecycles.

Supply support for 7130SA100P 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 for communications, computing, and industrial markets.

The 7130SA100P belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic, contention-free shared memory in real-time embedded systems with dual-processor or master/slave architectures.

FAQ

What is the maximum operating temperature range for the 7130SA100P?

The 7130SA100P is rated for industrial temperature operation from –40°C to +85°C. This specification is guaranteed across all speed grades and package types, including FP48, LC48, and PDG48. The device maintains full electrical performance within this range without derating, making it suitable for harsh industrial environments where thermal stability is critical. No additional heatsinking or airflow is required to meet this rating.

Does the 7130SA100P support battery backup data retention?

No, the 7130SA100P does not support battery backup data retention. That capability is exclusive to the LA variant (e.g., 7130LA100P), which specifies VDR = 2.0V and ICCDR ≤ 4000µA under data retention conditions. The "SA" suffix denotes standard active-power operation only, with no provision for low-voltage hold mode. For battery-backed applications, the 7130LA100P or 7140LA100P must be selected instead.

How does the BUSY arbitration logic function in the 7130SA100P?

The 7130SA100P implements hardware arbitration using BUSYL and BUSYR open-drain outputs. When both ports attempt access to the same address, the device asserts the BUSY signal on the losing port after tAPS = 5ns setup time, inhibiting writes until the winning port completes its cycle. tBDD ≤ 65ns defines the delay from BUSY deassertion to valid read data. This logic is internal and requires no external components-unlike SLAVE-only devices such as the 7140SA100P, which accept BUSY as an input.

Can the 7130SA100P be used as a standalone 8-bit memory without a SLAVE device?

Yes, the 7130SA100P functions fully as a standalone 8-bit dual-port SRAM. Its MASTER architecture includes all necessary control logic-including arbitration, BUSY generation, and interrupt signaling-without requiring a companion SLAVE. The SLAVE pairing (e.g., with 7140SA100P) is optional and only needed when expanding to 16-bit or wider data paths. In standalone mode, both left and right ports operate independently with full read/write capability.

What package options are available for the 7130SA100P?

The 7130SA100P is offered in three 48-pin packages: ceramic flatpack (FP48), leadless chip carrier (LC48), and plastic dual in-line package (PDG48/SB48). All share identical pinouts and electrical characteristics. FP48 and LC48 are preferred for high-reliability industrial applications due to hermetic sealing and thermal stability, while PDG48 offers cost-effective through-hole assembly. TQFP/STQFP variants exist for the 7130 family but are not assigned to the SA100P speed grade.