This document describes a dual push-button Smart Reset™ device with user-adjustable setup delays. It improves system stability compared to simple manual reset button devices and eliminates the need for a traditional reset access hole.
This document introduces the Smart Reset™ family of devices, specifically the STM65xx series, which feature dual-button reset inputs requiring both buttons to be pressed for a defined period to generate a system reset. This design improves stability and eliminates the need for a traditional reset hole on the device casing.
The note details common features such as voltage monitoring, battery-low detection (on STM6505 only), and various input/output logic configurations. It provides typical application diagrams for single, dual, and multiple-button reset setups, along with timing diagrams and information on demonstration boards.
| Voc range | 1.0 to 5.5 V |
|---|---|
| Operating temperature range | -40 °C to +85 °C |
| Package type | TDFN8 |
| Package dimensions | 2 mm x 2 mm x 0.75 mm |
| Battery-low detection threshold | 1.25 V |
They require both input reset buttons to be continuously pressed for a defined period of time before generating a reset output.
Only the STM6505 includes an independent battery monitoring feature with a battery-low warning output.
Yes, devices with standard CMOS input logic levels are suitable for applications where the driving device is powered by the same voltage supply.