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BUY DS1232 https://www.utsource.net/itm/p/911549.html
MicroMonitor Chip
The DS1232 is a microprocessor supervisor from Maxim Integrated. It is a low-power, dual-channel reset supervisor designed to monitor the power supply and reset the microprocessor when the power supply voltage drops below a preset threshold. Features: * Low supply current: 1.2 μA (typ) * Dual-channel reset * Low reset threshold: 2.8 V (typ) * Low reset-active time: 140 ms (typ) * Reset-active output: open-drain * Power-on reset (POR) * Manual reset input Applications: * Microprocessor reset * Power-on reset * Battery-backed systems * Automotive systems * Industrial systems (For reference only)