Controller program downloading circuit
A program downloading and controller technology, which is applied in the direction of program control, computer control, general control system, etc., can solve the problems of download program influence, external circuit complexity, and inability to connect, so as to provide reliability, increase reliability, and ensure smooth operation effect
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[0012] The present invention is described in further detail below in conjunction with accompanying drawing:
[0013] see figure 1 and figure 2 , the present invention includes a watchdog reset circuit and an amplifying circuit both connected to the controller; the circuit protection is realized through the watchdog circuit, and the working mode of the watchdog circuit is controlled by setting the high and low levels of TEST and WDT; the amplifying circuit is connected through the serial port The bus interface is connected with the controller to realize the conversion of RS232 level and TTL level. By setting the working mode of the controller, the controller enters the UART Bootloader mode.
[0014] Such as figure 1 As shown, IMP706 is a programmable watchdog chip, mainly to control system reset. Ensure the normal operation of the system; the two pins of RESI-P and RES-P are the signals of the main chip to control its working mode and configuration; the watchdog reset circu...
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