- on Miscellaneous Electronics
- Published in issue 7/2000 on page 0
Most of today’s microcontroller based applications need some protection against low power conditions that can cause many different system problems.Low voltage conditions on microcontroller systems can give problems in many situations. If for example the supply voltage to a system has a long time constant, the controller will at some point be storing and reading data from SRAM when there is insufficient supply voltage to sustain the SRAM data. This will produce indeterminate results and probable system failure. System brown-outs occur during operation and these supply voltage dips or glitches can be troublesome if, for instance they occur while the controller is writing to EEPROM. These failures are by their nature unpredictable and lead to an unreliable controller system.