M40SZ100WMQ6F

Supervisors Overview

The M40SZ100WMQ6F is a single-channel voltage supervisory circuit manufactured by STMicroelectronics, designed for low-power SRAM applications. It operates within a supply voltage range of 2.7 V to 3.6 V and features a threshold voltage of 1.25 V. The device provides an active-low, open-drain output and includes battery backup switching functionality. It is housed in a 16-pin SOIC package and supports operation temperatures from -40 °C to +85 °C.

Supervisors Feature Summary

• Converts standard low-power SRAM into non-volatile memory through integrated power monitoring and switching
• Automatically write-protects stored data when input voltage falls outside the specified tolerance range
• Switches SRAM power source from main supply to external battery during power failure events

Supervisors Applications

• NVRAM controller circuits for embedded systems
• Low-power SRAM data retention protection
• Battery-backed memory subsystems

Supervisors Procurement Notes

Verify the specific suffix MQ6F against official STMicroelectronics documentation to confirm pinout, package dimensions, and electrical characteristics match design requirements. Ensure compatibility with target SRAM devices regarding voltage levels and interface timing before finalizing procurement.

Supervisors Selection Notes

Select this component when designing systems requiring automatic write-protection and seamless battery switchover for SRAM data retention. Consider the 16-pin SOIC package constraints and the 2.7 V to 3.6 V operating range relative to the target memory supply voltage.

Supervisors Part Context

This part belongs to the M40SZ100W series of NVRAM controllers. It is distinct from general-purpose reset supervisors by its specialized function of managing SRAM power sources and enabling non-volatile behavior without external microcontroller intervention.

Supervisors Replacement Considerations

Check for direct cross-references or updated versions within the M40SZ100W family. Verify pin-to-pin compatibility if substituting with other NVRAM controllers, ensuring identical voltage thresholds and output configurations.