Infineon Technologies 5962-9232404MXA

Overview

5962-9232404MXA from Cypress Semiconductor is a 64 Kbit (8 K × 8) nonvolatile static RAM (nvSRAM) with QuantumTrap technology, enabling software-initiated STORE and automatic hardware RECALL on power-up. It operates at 35 ns access time, supports single 5 V ±10% supply, and is rated for military temperature range (–55 °C to +125 °C). Used in avionics data logging, missile guidance memory buffers, and secure boot configuration storage where SRAM volatility must be eliminated without external backup.

For engineers reviewing the 5962-9232404MXA datasheet, 5962-9232404MXA pinout, 5962-9232404MXA application, or 5962-9232404MXA equivalent, key selection criteria include guaranteed 1,000,000 STORE cycles, 100-year data retention, CE/OE/WE control compatibility with standard SRAMs, and hardware-protected low-voltage WRITE/STORE inhibition - critical for mission-critical embedded systems requiring deterministic nonvolatile behavior.

Technical Context

The STK11C68-5 architecture integrates a parallel 8K × 8 SRAM array with a shadow nonvolatile cell per bit using QuantumTrap charge-trapping technology. STORE and RECALL are executed via six-cycle CE-controlled address sequences (e.g., 0x0000 → 0x0F0F for STORE), with full I/O disable during execution.

Hardware RECALL triggers automatically when VCC rises above VSWITCH after power-up or brownout, completing in tHRECALL (≤20 ms). Hardware protection disables STORE and WRITE when VCAP falls below VSWITCH, preventing corruption during undervoltage conditions.

Key Specifications

Pinout & Package

28-pin Ceramic Dual In-Line Package (CDIP), 300 mil width, hermetically sealed, with center-bonded leads and glass-sealed lid per MIL-STD-883.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar nonvolatile SRAM applications.

Compared with STK11C68-5J and DS1248, 5962-9232404MXA uniquely delivers hermetic MIL-qualified reliability, deterministic software-controlled STORE/RECALL, and zero-battery operation - making it the sole option for flight-critical, long-duration, and maintenance-free embedded memory in defense systems.

Availability

5962-9232404MXA is available at Aetrix Electronics and suitable for avionics data loggers, missile guidance memory buffers, and secure boot configuration storage requiring stable component supply under ITAR-controlled logistics and long-lifecycle support.

Supply support for 5962-9232404MXA 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

Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability memory and programmable solutions for automotive, industrial, and defense applications, with over 30 years of analog and mixed-signal IP leadership.

The STK11C68 series was developed specifically for military and aerospace systems needing battery-free, radiation-tolerant, and long-retention nonvolatile memory - replacing legacy battery-backed SRAMs in MIL-STD-1553, 1760, and DO-254 avionics.

FAQ

What is the exact STORE sequence timing requirement for 5962-9232404MXA?

The STORE sequence requires six consecutive CE-controlled Read cycles at specific addresses (0x0000 → 0x0F0F) with tRC ≥ 35 ns between CE transitions. Each address must be latched with CE LOW and WE HIGH; no intervening writes or address changes are permitted. Total sequence duration is ≤210 ns minimum, and tSTORE completion is 10 ms maximum at +125 °C.

Does 5962-9232404MXA require an external capacitor for VCAP?

No - the 5962-9232404MXA does not use an external VCAP pin. Unlike later nvSRAM generations, this device relies solely on internal charge trapping (QuantumTrap) and has no capacitor terminal. The "VCAP" reference in documentation applies only to newer STK12C68 variants; this part uses pure CMOS+charge-trap integration with no external energy storage.

Can RECALL be initiated while the device is actively writing to SRAM?

No - RECALL (software or hardware) cannot be initiated during an active SRAM write cycle. If a write is in progress when power is removed and restored, the SRAM contents may be corrupted unless WE or CE is held HIGH during power-up. Cypress recommends connecting a 10 kΩ pull-up resistor from WE to VCC to enforce safe default state during brownout.

Is the 28-pin CDIP package of 5962-9232404MXA RoHS-compliant?

No - the 5962-9232404MXA is manufactured to MIL-PRF-38535 Class B specifications with leaded solder finish and ceramic-glass hermetic seal. It is exempt from RoHS Directive 2011/65/EU Annex III (Category 8 - monitoring and control instruments) and complies with J-STD-006B for high-reliability Pb95Sn5 terminations.