AN3261

Typical application diagrams

Doc ID 17837 Rev 1

7/17

2.2

Dual-button reset

The most frequent application requires a configuration with two reset buttons which further

improves immunity to undesired resets by adding a second input reset button with delayed

reset. In this case, the reset pulse occurs only when both the buttons have been pressed

Figure 3.

Dual push-button Smart Reset™ typical application diagram, STM6503

Figure 4.

Timing diagram - dual push-button Smart Reset™

VCC

SR0

SR1

TSR

RST

VSS

VCC

INT/

NMI

VSS

PUSH-BUTTON

SWITCH

MCU

PUSH-BUTTON

SWITCH

RESET

STM6503

VCC

SR0

SR1

RST