M40Z111MH6E

Supervisors Overview

The M40Z111MH6E is a voltage supervisory circuit designed for non-volatile RAM applications, specifically supporting up to two low-power SRAMs. It operates within a supply voltage range of 4.5 V to 5.5 V and features an undervoltage threshold of 4.2 V with an overvoltage threshold of 4.75 V. The device consumes 6 uA of operating current and functions reliably between -40°C and +85°C. Packaged in a 28-pin SOH format, it includes power failure detection capabilities without manual reset or watchdog timer functions.

Supervisors Feature Summary

• Converts standard low-power SRAMs into battery-backed non-volatile memory systems
• Provides automatic backup switching during main power failure events
• Generates system reset signals upon detection of under-voltage conditions

Supervisors Applications

• Battery-backed NVRAM systems for industrial control units
• Data logging modules requiring persistent storage during power outages
• Embedded systems utilizing LPSRAM for critical parameter retention

Supervisors Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors due to discontinued status. Confirm package integrity and pin alignment against the 28-SOH specification. Review datasheet revisions for any historical design changes affecting electrical characteristics. Ensure compatibility with existing PCB footprints before procurement finalization.

Supervisors Selection Notes

Select this supervisor when designing circuits requiring automatic SRAM backup switching without complex configuration. It suits applications needing simple undervoltage monitoring with fixed thresholds. Consider alternative active components if manual reset inputs or watchdog timers are required for system safety compliance.

Supervisors Part Context

Part of the M40Z111 series from STMicroelectronics, focusing on power management ICs for memory protection. This specific model targets 5V and 3V logic systems, offering a dedicated solution for preserving data integrity in volatile memory structures during unexpected power loss scenarios.

Supervisors Replacement Considerations

Public confirmed substitute part numbers: M40Z111MH6F.