Renesas 7132SA100JI

Overview

7132SA100JI from IDT is a high-speed 2K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, BUSY output flag (open-drain), 100 ns max read cycle time, 5 V ±10% supply, and industrial temperature range (–40°C to +85°C). It enables full-speed 16-bit-or-wider memory expansion when paired with IDT7142 SLAVE devices in real-time embedded control systems.

For engineers reviewing the 7132SA100JI datasheet, 7132SA100JI pinout, 7132SA100JI application, or 7132SA100JI equivalent, this page delivers verified timing parameters, BUSY arbitration behavior, dual-port power-down modes, and exact package- and speed-grade–specific electrical characteristics for deterministic system integration.

Technical Context

The 7132SA100JI implements independent left/right port access with separate address, control, and I/O buses, supporting asynchronous concurrent reads/writes to any memory location. Its on-chip arbitration logic resolves port contention via BUSY assertion based on chip enable and address match timing - not R/W state - ensuring deterministic priority resolution without external logic.

As a MASTER device, it features two open-drain BUSY outputs (BUSYL/BUSYR) requiring 270 Ω pull-up resistors, and supports battery-backed data retention only in LA variants (not applicable here). The SA suffix denotes standard-power operation with 325 mW typical active power and 5 mW typical standby power at 5 V.

Key Specifications

Pinout & Package

7132SA100JI is supplied in a 48-pin Flatpack (FP48) package with 0.75 in × 0.75 in footprint and 0.11 in height. All VCC pins must be decoupled locally; all GND pins require low-impedance ground plane connection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C133-100AXC, 7132SA100JI delivers hardware-enforced atomic access without layout overhead; versus IDT7142SA100JI, it provides autonomous arbitration authority and BUSY signaling essential for master-side control in real-time systems.

Availability

7132SA100JI is available at Aetrix Electronics and suitable for real-time motion control, redundant industrial PLC memory, and avionics sensor fusion applications requiring stable component supply, long-term lifecycle assurance, and industrial-temperature reliability.

Supply support for 7132SA100JI 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 high-performance memory, timing, and interface solutions for industrial, communications, and computing markets.

The IDT7132/7142 product line was engineered for deterministic dual-port memory access in hard real-time systems - emphasizing arbitration integrity, low-latency timing, and industrial environmental resilience.

FAQ

What is the maximum operating frequency supported by the 7132SA100JI?

The 7132SA100JI does not specify a clock frequency; instead, its performance is defined by timing parameters. With a maximum read cycle time (tRC) of 100 ns, it supports sustained access rates up to 10 MHz. This means the device can complete one full read operation every 100 ns, enabling deterministic data exchange in high-speed control loops. The 7132SA100JI achieves this without an internal clock, relying on asynchronous address and control strobes.

Does the 7132SA100JI support battery backup for data retention?

No, the 7132SA100JI does not support battery backup. Data retention capability is exclusive to LA-suffix variants (e.g., 7132LA100JI), which guarantee operation down to 2.0 V with typical retention current of 100 µA. The SA suffix indicates standard-power operation optimized for active performance, not low-voltage hold mode. For applications requiring nonvolatile retention, the 7132SA100JI must be paired with external backup circuitry or replaced with an LA-grade part.

How are the BUSY outputs configured on the 7132SA100JI?

The 7132SA100JI features two open-drain BUSY outputs - BUSYL and BUSYR - each corresponding to its left and right port. As specified in the datasheet, these require external 270 Ω pull-up resistors to VCC. When contention occurs (e.g., both ports access the same address), the asserting port's BUSY signal goes LOW to stall the contending port. This hardware arbitration eliminates race conditions and removes the need for software semaphores or external logic gates in synchronized multi-processor designs using the 7132SA100JI.

Can the 7132SA100JI be used as a standalone dual-port RAM without a SLAVE device?

Yes, the 7132SA100JI functions fully as a standalone 2K × 8 dual-port SRAM with independent left and right ports, complete address/control/I/O separation, and on-chip arbitration. Its MASTER designation reflects capability - not dependency. It only requires a SLAVE (e.g., IDT7142) when expanding data bus width beyond 8 bits (e.g., to 16 or 32 bits). In standalone mode, BUSYL and BUSYR provide local contention feedback, and all timing and power specifications remain valid per the 7132SA100JI datasheet.

What package type is used for the 7132SA100JI, and are there pin-compatible alternatives?

The 7132SA100JI is packaged in a 48-pin Flatpack (FP48) with 0.75 in × 0.75 in body size and 0.11 in height. Pin-compatible alternatives include the same-speed 7132SA100JI in 48-pin LCC (LC48) or 48-pin DIP (PDG48/SB48), but these differ mechanically and thermally - FP48 offers superior thermal resistance and hermetic sealing for harsh environments. No other manufacturer offers a functionally identical pinout; cross-references like CY7C133 use different pin assignments and lack BUSY arbitration signals.