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Battery Backup for SRAM or MicrocontrollerThis circuit can be used as a low cost SRAM and Microcontroller-Microprocessor Battery Backup. All ...RS232 with Opto-IsolationI had to once interface an high voltage circuit to PC, The uC had to communicate thru RS232--Comm po...555 watchdog for uC and uP systemswhen the microcontroller hangs due to a spike, EMI or RFI etc. the 7555 will reset the uC, if proper... |
