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SGM810-SXN3 Datasheet(PDF) 1 Page - SG Micro Corp |
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SGM810-SXN3 Datasheet(HTML) 1 Page - SG Micro Corp |
1 / 9 page SGM803 SGM809 SGM810 GENERAL DESCRIPTION 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 240 ms. This holds the microprocessor in a reset state until conditions have stabilized. The RESET output remains operational with VCC as low as 1 V. The SGM803/SGM809 provides 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. Seven reset threshold voltage options are available suitable for monitoring 2.5V, 3V, 3.3V, and 5V supply voltages. The reset comparator features built-in glitch immunity, making it immune to fast transients on VCC. The low supply current of typically 17 µA makes the SGM803/SGM809/SGM810 ideal for use in portable, battery operated equipment. They are available in the 3-pin SOT23 package. APPLICATIONS Microprocessor Systems Controllers Intelligent Instruments Automotive Systems Safety Systems Portable Instruments TYPICAL OPERATION CIRCUIT MICROPROCESSOR SYSTEM SGM803/SGM809 GND RESET RESET GND VCC VCC RPULL-UP SGM803 only Microprocessor Supervisory Circuit in 3-Pin SOT23 FEATURES − Precision Voltage Monitor: 2.5V,3 V, 3.3 V, 5 V Options − Superior Upgrade for MAX803/MAX809/MAX810 and SGM803/SGM809/SGM810 − Fully Specified over Temperature − Low Power Consumption (17μA Typ) − Reset Assertion Down to 1 V VCC − 160 ms Min Power-On Reset Open-Drain RESET Output(SGM803) Push-Pull RESET Output (SGM809) Push-Pull RESET Output (SGM810) − Compact 3-Pin SOT23 Package PIN CONFIGURATIONS(TOP VIEW) SGM803 SGM809 SGM810 1 2 3 SOT23-3 GND VCC RESET/RESET SGM809- ZXN3L (only) 1 2 3 SOT23-3(L-Type) GND VCC RESET REV. B Shengbang Microelectronics Co, Ltd Tel: 86/451/84348461 www.sg-micro.com |
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