M40SZ100WMQ6E

Supervisors Overview

The M40SZ100WMQ6E is a processor monitor from STMicroelectronics designed for 3 V and 5 V monitoring applications. It features a 16-pin SOIC package with surface mount installation. The device operates within a supply voltage range of 2.7 V to 3.6 V and supports an operating temperature range of -40 °C to +85 °C. Key electrical characteristics include a threshold voltage of 1.25 V, low-level active output drivers, and open-drain configuration. It provides power-fail detection capabilities without manual reset or watchdog timer functions.

Supervisors Feature Summary

• Converts standard low-power SRAM into non-volatile memory by monitoring VCC input conditions
• Forces chip enable output inactive to write-protect stored data when VCC is out-of-tolerance
• Switches SRAM power from VCC pin to external battery during power failure for data retention
• Maintains write-protection until valid power condition returns upon subsequent power-up

Supervisors Applications

• Non-volatile RAM (NVRAM) controller circuits
• Low-power SRAM backup systems
• Battery-backed memory designs
• Power-fail protection logic

Supervisors Procurement Notes

Verify the specific suffix 'M40SZ100WMQ6E' against official STMicroelectronics documentation to confirm exact package type and thermal rating. Ensure compatibility with target system voltage levels between 2.7 V and 3.6 V. Confirm that the 16-pin SOIC footprint matches the PCB layout requirements. Check for RoHS compliance status if required by project specifications.

Supervisors Selection Notes

Select this component when designing NVRAM solutions requiring automatic write-protection and battery switching. It is suitable for applications needing precise voltage monitoring with a 1.25 V reference. Consider the 16-pin SOIC package size and operating temperature range (-40 °C to +85 °C) for environmental constraints. Verify that the open-drain output driver meets the interface requirements of the connected SRAM.

Supervisors Part Context

The M40SZ100W series includes variants like M40SZ100WMQ6F, sharing similar supervisory functions. These devices belong to STMicroelectronics' voltage supervisory line, focusing on low-power SRAM conversion. The M40Z300 series represents a different channel count and package option within the broader supervisor family.

Supervisors Replacement Considerations

M40SZ100WMQ6F is a documented alternative within the same series. Verify pinout and electrical parameters match before substitution.