8-bit Microcontrollers中的主题 Parallel programming 89c668 https://community.nxp.com/t5/8-bit-Microcontrollers/Parallel-programming-89c668/m-p/606056#M22186 <HTML><HEAD></HEAD><BODY><P>Hi everybody,</P><P>I would like to program P89C668 microcontroller&nbsp;using parallel programming method.&nbsp;I have almost every information, but I need some details. I know which pins act as address llines (A0-A15) for flashing, but the available resources said the status byte and boot vector&nbsp;can be programmed at address 10000 hex &nbsp;and &nbsp;10001 hex. It means I&nbsp;have to use A16, &nbsp;but I do not know which pin has to be used for this address.</P><P>My&nbsp;second question is the method to erasing the chip using parallel programming technic.</P><P>The answer for the first question is the most important to me, because after set boot vector back to the factory default &nbsp;I will be able to erase and program the chip using ISP method.</P><P>Help me please if you know the answer. Thanks.</P></BODY></HTML> Fri, 09 Sep 2016 16:46:33 GMT attilagallai 2016-09-09T16:46:33Z Parallel programming 89c668 https://community.nxp.com/t5/8-bit-Microcontrollers/Parallel-programming-89c668/m-p/606056#M22186 <HTML><HEAD></HEAD><BODY><P>Hi everybody,</P><P>I would like to program P89C668 microcontroller&nbsp;using parallel programming method.&nbsp;I have almost every information, but I need some details. I know which pins act as address llines (A0-A15) for flashing, but the available resources said the status byte and boot vector&nbsp;can be programmed at address 10000 hex &nbsp;and &nbsp;10001 hex. It means I&nbsp;have to use A16, &nbsp;but I do not know which pin has to be used for this address.</P><P>My&nbsp;second question is the method to erasing the chip using parallel programming technic.</P><P>The answer for the first question is the most important to me, because after set boot vector back to the factory default &nbsp;I will be able to erase and program the chip using ISP method.</P><P>Help me please if you know the answer. Thanks.</P></BODY></HTML> Fri, 09 Sep 2016 16:46:33 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/Parallel-programming-89c668/m-p/606056#M22186 attilagallai 2016-09-09T16:46:33Z