型号：UPD78F0513GB-UES-A

现货，原厂进口全新原装，假一赔十！

UPD78F0513

UPD78F0513

UPD78F0513

单片机 

(5) POWER ON/OFF SEQUENCE:    In the case of a device that uses different power supplies for the internal operation and external interface, as a rule, switch on the external power supply after switching on the internal power supply.    When switching the power supply off, as a rule, switch off the external power supply and then the internal power supply.    Use of the reverse power on/off sequences may result in the application of an overvoltage to the internal elements of the device, causing malfunction and degradation of internal elements due to the passage of an abnormal current.    The correct power on/off sequence must be judged separately for each device and according to related specifications governing the device.

INPUT OF SIGNAL DURING POWER OFF STATE :    Do not input signals or an I/O pull-up power supply while the device is not powered.    The current injection that results from input of such a signal or I/O pull-up power supply may cause malfunction and the abnormal current that passes in the device at this time may cause degradation of internal elements.  Input of signals during the power off state must be judged separately for each device and according to related specifications governing the device