Renesas 7132LA35P

Overview

7132LA35P 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), 35 ns max read cycle time, 1 mW typical standby power, and battery backup data retention at 2 V. 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 7132LA35P datasheet, 7132LA35P pinout, 7132LA35P application, or 7132LA35P equivalent, this page delivers verified timing parameters, validated port arbitration behavior, confirmed flatpack package mapping, and precise DC/AC electrical specs per MIL-PRF-38535 QML-compliant industrial-grade operation.

Technical Context

The 7132LA35P implements independent left/right asynchronous ports with separate address, control, and I/O buses, supporting concurrent read/write access to any memory location. Its on-chip arbitration logic resolves contention via BUSY signaling-asserted when both ports access the same address-enabling deterministic priority resolution without external logic.

As a MASTER device, it features open-drain BUSYL and BUSYR outputs requiring 270 Ω pull-up resistors, supports TTL-compatible 5 V ±10% supply, and enters ultra-low-power standby (1 mW typ.) when CE is deasserted. Battery backup mode retains data at 2 V, validated for industrial temperature range (–40°C to +85°C).

Key Specifications

Pinout & Package

7132LA35P is packaged in a 48-pin flatpack (FP48) with 0.75 in × 0.75 in footprint and 0.11 in height, compliant with MIL-PRF-38535 QML Class B requirements.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C136-35JC, 7132LA35P delivers integrated arbitration and true MASTER functionality, eliminating design complexity; versus IDT7142LA35P, it provides autonomous control capability and full port independence, making it the sole viable option for standalone dual-port memory nodes.

Availability

7132LA35P is available at Aetrix Electronics and suitable for industrial motion control, avionics data acquisition, and ruggedized telemetry transmitter designs requiring stable component supply, long-term lifecycle support, and MIL-qualified reliability.

Supply support for 7132LA35P 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 aerospace markets.

The IDT7132 family was engineered specifically for deterministic dual-processor memory sharing in safety-critical embedded systems, emphasizing hardware arbitration, low-power retention, and military-grade qualification.

FAQ

What is the function of BUSYL and BUSYR on the 7132LA35P?

BUSYL and BUSYR are open-drain arbitration outputs unique to the MASTER 7132LA35P. They assert low when the opposite port accesses the same memory address, signaling contention. Each requires a 270 Ω pull-up resistor to 5 V to generate valid logic levels. These signals enable hardware-stalled writes without software polling, ensuring deterministic behavior in real-time systems using the 7132LA35P.

Does the 7132LA35P support battery backup operation, and what voltage is required?

Yes, the 7132LA35P supports battery backup data retention at 2.0 V minimum supply, as specified in Table 6 of the datasheet. This feature is exclusive to LA versions and allows indefinite data hold during main power loss. The 7132LA35P draws only 100 µA typical in retention mode (ICCDR), enabling multi-year operation from a CR2032 coin cell without regulation circuitry.

Can the 7132LA35P operate as a standalone dual-port RAM without a SLAVE device?

Yes, the 7132LA35P functions fully as a standalone 2K × 8 dual-port SRAM with independent left/right ports, arbitration logic, and BUSY outputs. It does not require an IDT7142 SLAVE for basic operation. The SLAVE pairing is optional and used only when expanding data bus width beyond 8 bits - the 7132LA35P itself delivers complete dual-access capability in isolation.

What package type is used for the 7132LA35P, and are there pin-compatible alternatives?

The 7132LA35P uses a 48-pin flatpack (FP48) package with 0.050-inch lead spacing, per datasheet drawing 2692 drw 03F. While IDT offered the same speed grade in DIP, LCC, and PLCC variants, the FP48 variant is distinct and not pin-compatible with those packages due to different pin numbering and thermal/mechanical constraints. No drop-in replacement exists across package types for the 7132LA35P.

How does the 7132LA35P handle simultaneous read/write to the same address?

When both ports access the same address concurrently, the 7132LA35P's on-chip arbitration logic asserts BUSYL or BUSYR within 20 ns (tBAA) to stall the later-arriving access. The earlier access proceeds; the stalled write is internally inhibited. This hardware resolution prevents data corruption and eliminates race conditions - a core design requirement validated in the 7132LA35P's MIL-PRF-38535 qualification testing.