ETC8114

MIC8114 Micrel MIC8114 Microprocessor Reset Circuit Final Information General Description The MIC8114 is an inexpensive microprocessor supervisory circuit that monitors the power supply in microprocessor based systems. The function of this device is to assert a reset if the power supply drops below a designated reset threshold level or /MR is forced low. The MIC8114 has an active low /RESET output. The reset output is guaranteed to remain asserted for a minimum of 790ms after VCC has risen above the designated reset threshold level. The MIC1814 comes in a 4-pin SOT-143 package. Features Precision voltage monitor for 3.3V power supplies Specifically tailored to the AMD Elan SC400/410 /RESET remains valid with VCC as low as 1.4V <15µA supply current 1100ms minimum reset pulse width Manual reset input Available in 4-Pin SOT-143 Package Applications Portable equipment Intelligent instruments Critical microprocessor power monitoring Printers/computers Embedded controllers Ordering Information Part Number MIC8114TU Marking NV Operating Temp. Range –40°C to +85°C Package 4-lead SOT-143 Typical Application VCC VCC MIC81 14 VCC µP MR RESET RESET Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com May 2003 1 MIC8114 MIC8114 Micrel Pin Configuration GND 1 4 VCC MIC81 14 RESET 2 3 MR 4-Lead SOT-143 Pin Description Pin Number 1 2 Pin Name GND /RESET Pin Function...