Fairchild Semiconductor's Enhanced Reset Timers Give Mobile Device Users a Simple Reset Solution for Hardware Lock Ups
Reset timers provide a delay between when a button/key is pressed and when the system resets, thereby preventing an unintended reset. This new family of reset timers is designed with a variety of delay times for resetting mobile devices and product options that provide both fixed and selectable delays, single- or dual-button reset, and fixed or variable reset pulse widths.
The FT7522 and FT10001 provide fixed delays of 7.5 and 10 seconds and offer inputs for single-button resetting capability. The FT3001 provides design flexibility with two inputs for single- or dual-button resetting capability as well as four different delay values that can be selected using the DSR0 and DSR1 pins. All devices function over a power supply range of 1.65V to 5.0V and draw minimal supply current when inactive, making them suitable for use in portable devices where battery conservation is essential.