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SGM811-ZXKA4 Datasheet(PDF) 1 Page - SG Micro Corp |
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SGM811-ZXKA4 Datasheet(HTML) 1 Page - SG Micro Corp |
1 / 9 page SGM811 SGM812 GENERAL DESCRIPTION The SGM811/SGM812 supervisory circuits monitor the power supply voltage in microprocessor and digital systems. The SGM811/SGM812 is designed to monitor seven different voltages, these voltages have been selected for the effective monitoring of 2.5V, 3 V, 3.3 V, and 5 V supply voltage levels. 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 SGM811 provides an active low reset signal ( RESET ) while the SGM812 provides an active high signal (RESET) output. The SGM811/SGM812 has a manual reset input. The manual reset function is very useful, especially if the circuit in which the SGM811/SGM812 is operating enters into a state that can only be detected by the user. Allowing the user to reset a system manually can reduce the damage or danger that could otherwise be caused by an out-of-control or locked system. The devices come in a 4-pin SOT143 and 5-pin SOT23 packages. APPLICATIONS Microprocessor Systems Controllers Intelligent Instruments Automotive Systems Safety Systems Portable Instruments Microprocessor Supervisory with Manual Reset Input FEATURES − Superior Upgrade for MAX811/MAX812 and ADM811/ADM812 − Specified over Temperature − Low Power Consumption (17 μA Typ) − Precision Voltage Monitor: 2.5V,3 V, 3.3 V, 5 V Options − Reset Assertion Down to 1 V VCC − 160 ms Min Power-On Reset Logic Low RESET Output (SGM811) Logic High RESET Output (SGM812) − Manual Reset Input − Compact 4-Pin SOT143 and 5-Pin SOT23 Packages PIN CONFIGURATIONS(TOP VIEW) 1 2 3 4 SOT143-4 GND VCC RESET/RESET MR 1 3 4 SOT23-5 GND VCC RESET/RESET 5 MR 2 NC TYPICAL OPERATION CIRCUIT MICROPROCESSOR SYSTEM SGM811 GND RESET MR RESET GND VCC VCC 100KO Nov 2006 Shengbang Microelectronics Co, Ltd Tel: 86/451/84348461 www.sg-micro.com |
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