SGM809-RXN3/TR圣邦微微处理器复位开关

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The SGM803/SGM809/SGM810 supervisory circuits

monitor the power supply voltage in microprocessor

and digital systems. They provide a reset output during

power-up, power-down and brownout conditions. On

power-up, an internal timer holds reset asserted for

240ms. This holds the microprocessor in a reset state

until conditions have stabilized. The RESET output

remains operational with VCC as low as 1V. The

SGM803 and SGM809 provide an active low reset

signal ( RESET ) while the SGM810 provides an active

high signal (RESET) output. The SGM809/SGM810

have push-pull outputs, whereas the SGM803 has an

open-drain output, which requires an external pull-up

resistor.