5962-9232404MXA

Overview

The SMD5962-92324 is a military-grade SoftStore nvSRAM with an 8 K x 8 configuration. It provides unlimited SRAM read/write endurance and 1,000,000 STORE cycles. The device operates on a single 5 V supply within the -55 °C to +125 °C range. Available access times are 35 ns, 45 ns, and 55 ns. Data retention is guaranteed for 100 years.

Feature Summary

• Integrates QuantumTrap technology for highly reliable nonvolatile storage.
• Supports automatic hardware RECALL upon power-up.
• Features software-initiated STORE and RECALL operations.
• Provides hardware protection against inadvertent writes during low voltage.

Applications

• Military avionics systems
• Spacecraft data logging
• Harsh environment industrial control

Procurement Notes

Verify that the component matches the specific speed grade (35, 45, or 55 ns) required by the design. Confirm package type availability, as the datasheet lists both CDIP and LCC options. Ensure firmware implements the correct six-address sequence for STORE/RECALL initiation. Check for any obsolescence notices from Cypress Semiconductor.

Selection Notes

Select this component when standard SRAM volatility is unacceptable in high-reliability environments. It serves as a drop-in replacement for industry-standard SRAMs while adding nonvolatile capabilities. Consider the specific access time requirements of the system bus. Evaluate the need for unlimited write endurance versus limited STORE cycle counts.

Part Context

This part number represents the MIL-STD-883 qualified version of the Cypress STK11C68-5. It belongs to the SoftStore family, combining fast static RAM with embedded nonvolatile cells. The 'SMD' prefix indicates it meets Space and Military Device specifications.

Replacement Considerations

Direct pin-compatible replacements include other 8Kx8 military nvSRAMs. Verify interface compatibility and timing parameters before substitution.

FAQ

How is the STORE operation initiated?

It is initiated via a specific sequence of six CE-controlled Read cycles from addresses 0x0000, 0x1555, 0x0AAA, 0x1FFF, 0x10F0, and 0x0F0F.

What happens during power-up?

If VCC drops below VRESET, an internal RECALL request is latched. Upon rising above VSWITCH, data is automatically restored to the SRAM.