Renesas 5962-9166208MXA

Overview

5962-9166208MXA from IDT is a high-speed 4K × 16 true dual-port static RAM designed for asynchronous, simultaneous access from independent left and right ports. It delivers 20 ns max read cycle time (tRC), supports full on-chip semaphore signaling and port arbitration, and operates across military temperature range (–55°C to +125°C) with 5.0 V ±10% supply. It enables error-free 32-bit+ memory expansion via master/slave cascading in real-time avionics and radar processing systems.

For engineers reviewing the 5962-9166208MXA datasheet, 5962-9166208MXA pinout, 5962-9166208MXA application, or 5962-9166208MXA equivalent, key selection criteria include guaranteed 20 ns military-grade timing, integrated BUSY/INT flag logic, dual-byte control (UB/LB), battery-backed data retention at 2 V, and QML-38535 Class V qualification for radiation-hardened embedded systems.

Technical Context

The 5962-9166208MXA implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port-enabling concurrent read/write operations to the same or different memory locations without external arbitration logic. Its on-chip arbitration resolves contention via BUSY flag assertion and priority set-up timing (tAPS = 5 ns).

It integrates dedicated semaphore registers (8 flags, addressed by A0–A2) accessible via SEM-controlled mode, with write-to-read latency (tSWRD = 5 ns) and contention window (tSPS = 5 ns). The device supports both R/W- and CE/UB/LB-controlled write cycles, and features automatic power-down when chip enable is deasserted.

Key Specifications

Pinout & Package

5962-9166208MXA is packaged in a 100-pin Thin Quad Flatpack (TQFP, package code PNG100), with 4×25 pin grid, exposed thermal pad, and lead pitch of 0.5 mm. Pin functions are electrically symmetric between left and right ports, supporting flexible board layout for bidirectional data flow.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362V-20BVXI and AS7C34098B-20TIN, the 5962-9166208MXA uniquely combines QML Class V qualification, 2 V data retention, and full hardware semaphore/BUSY arbitration - making it the sole option for radiation-tolerant, safety-critical dual-port memory in deployed aerospace systems.

Availability

5962-9166208MXA is available at Aetrix Electronics and suitable for avionics data buffering, radar signal processing, flight control computers, and MIL-STD-1553 bus interface applications requiring stable component supply under extended lifecycle management.

Supply support for 5962-9166208MXA 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 timing, memory, and interface solutions for communications, computing, and aerospace markets.

The 5962-9166208MXA belongs to IDT's military-grade dual-port SRAM product line, engineered specifically for deterministic, radiation-tolerant memory subsystems in flight-critical and defense electronics where reliability and timing predictability are non-negotiable.

FAQ

What is the qualified operating temperature range for the 5962-9166208MXA?

The 5962-9166208MXA is qualified for operation from –55°C to +125°C per MIL-PRF-38535 QML Class V requirements. This full military temperature range is verified through temperature cycling, burn-in, and parametric testing - ensuring reliable performance in jet engine bays, satellite payloads, and missile guidance sections where ambient extremes occur.

Does the 5962-9166208MXA support true simultaneous read operations from both ports to the same memory address?

Yes, the 5962-9166208MXA uses true dual-ported memory cells that permit concurrent reads from identical addresses on left and right ports without conflict or timing penalty. This capability is explicitly confirmed in the Functional Block Diagram and Truth Table I, enabling lock-step verification and redundancy checking in fault-tolerant architectures.

How does the 5962-9166208MXA implement hardware semaphore functionality?

The 5962-9166208MXA integrates eight dedicated semaphore flags accessed via A0–A2 address lines and controlled by the SEM pin. When SEM = VIL, I/O0 writes to the selected flag; when SEM = VIH, all I/O lines (I/O0–I/O15) output the flag value. Write-to-read latency is fixed at 5 ns (tSWRD), and contention window is 5 ns (tSPS), as specified in Truth Table II and AC Tables 13–14.

What package type is used for the 5962-9166208MXA, and is it RoHS-compliant?

The 5962-9166208MXA is supplied in a 100-pin Thin Quad Flatpack (TQFP) with package code PNG100, measuring 14 mm × 14 mm × 1.4 mm. Per IDT documentation, this variant is manufactured as a "green part" - lead-free and RoHS-compliant - with matte tin finish and halogen-free molding compound, satisfying DoD Directive 8570 and ECSS-Q-ST-30C requirements.

Can the 5962-9166208MXA be used in master/slave configurations to expand memory width beyond 16 bits?

Yes, the 5962-9166208MXA supports master/slave cascading via the M/S pin: when M/S = H, BUSY is an output flag indicating internal arbitration status; when M/S = L, BUSY becomes an input that gates write operations. This enables seamless 32-bit or wider word systems without external glue logic - a capability explicitly documented in the Features section and Functional Description.