Формирователи импульса сброса MAX6823SUK+T

Схема контроля микропроцессора , 1.2В-5.5В питание, выход сброса с активным низким, с открытым стоком

The MAX6823SUK+T is a low voltage µP supervisor with manual reset and watchdog timer in 5 pin SOT-23 package. The low voltage microprocessor (µP) supervisory circuits that combine voltage monitoring, watchdog timer and manual reset input functions. Microprocessor supervisory circuits significantly improve system reliability and accuracy compared to separate ICs or discrete components. This device assert a reset signal whenever the monitored voltage drops below its preset threshold, keeping it asserted for a minimum timeout period after VCC rises above the threshold. In addition, a watchdog timer monitors against code execution errors. A debounced manual reset is also available. The outputs to be in the correct state for VCC down to +1.0V. The MAX6823 has active low push-pull RESET. It also has manual reset input and a watchdog timer.

• Supply voltage range is 1.2V to 5.5V
• Operating temperature range from -40°C to 125°C
• Reset threshold of 2.93V
• Immune to short negative VCC transients
• No external components
• Watchdog timeout period is 1.4s
• Computers and Controllers; Critical µP Monitoring; Embedded Controllers; Intelligent Instruments; Portable Battery-Powered Equipment; Set-Top Boxes

Области применения

Мониторинг Системы, Переносные Устройства