STM6502, STM6503, STM6504, STM6505 series products are ST company's dual button smart reset circuits, which have adjustable delay reset function, and can be used for mobile phones, smartphones, e-books, MP3 players, games, portable navigation devices and other applications that require delayed reset button response to improve system stability.
This document describes the STM65xx family of Smart Reset devices, which provide dual push-button inputs with extended reset setup delays to prevent inadvertent system resets. The family includes four variants: STM6502 and STM6505 feature adjustable delays via an external capacitor; STM6503 offers selectable delays via a three-state logic pin; and STM6504 provides independent inputs with one adjustable and one instant reset function. All devices are designed for low-power applications such as mobile phones, MP3 players, and navigation devices.
| Operating voltage range | 1.0 V to 5.5 V |
|---|---|
| Package type | TDFN8 |
| Package dimensions | 2 mm x 2mm x 0.75 mm |
| Reset output type | Active-low, open-drain |
| Supply current | Low |
The delay can be adjusted by an external capacitor on the SRC pin or selected via three-state logic.
The available minimum delay options are 2 s, 6 s, and 10 s.
The STM6505 includes an independent battery voltage monitoring input (VBAT).