8-bit MicrocontrollersのトピックPage boundaries for flash block erase - question https://community.nxp.com/t5/8-bit-Microcontrollers/Page-boundaries-for-flash-block-erase-question/m-p/241187#M19580 <HTML><HEAD></HEAD><BODY><P>Hi</P><P>I am using an MC9S08QE128. Looking at the memory map:</P><P>There is an 8064 byte flash block from 0x2080 to 0x3FFF.</P><P>If I want to erase a 512 byte block of flash, (I am using doonstack), must the block start at a page boundary such as 0x2100? The RAM space above this block in the memory map is 0x1880 to 0x207F. Can I erase from 0x2080 since this is not the start of a boundary or would I have to erase from 0x2000 ? (which may cause problems, since the ram extends to 0x207F)</P><P>thanks </P><P>Russell</P></BODY></HTML> Wed, 30 Jan 2013 06:44:01 GMT russellsher 2013-01-30T06:44:01Z Page boundaries for flash block erase - question https://community.nxp.com/t5/8-bit-Microcontrollers/Page-boundaries-for-flash-block-erase-question/m-p/241187#M19580 <HTML><HEAD></HEAD><BODY><P>Hi</P><P>I am using an MC9S08QE128. Looking at the memory map:</P><P>There is an 8064 byte flash block from 0x2080 to 0x3FFF.</P><P>If I want to erase a 512 byte block of flash, (I am using doonstack), must the block start at a page boundary such as 0x2100? The RAM space above this block in the memory map is 0x1880 to 0x207F. Can I erase from 0x2080 since this is not the start of a boundary or would I have to erase from 0x2000 ? (which may cause problems, since the ram extends to 0x207F)</P><P>thanks </P><P>Russell</P></BODY></HTML> Wed, 30 Jan 2013 06:44:01 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/Page-boundaries-for-flash-block-erase-question/m-p/241187#M19580 russellsher 2013-01-30T06:44:01Z Re: Page boundaries for flash block erase - question https://community.nxp.com/t5/8-bit-Microcontrollers/Page-boundaries-for-flash-block-erase-question/m-p/241188#M19581 <HTML><HEAD></HEAD><BODY><P>You can erase sector at 0x2080. This will erase whole 512bytes sector. You'll get erased nonbanked addresses 0x2080..0x21FF, also banked addresses PPAGE=0:0xA000 to PPAGE=0:0xA1FF. </P></BODY></HTML> Wed, 30 Jan 2013 07:51:42 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/Page-boundaries-for-flash-block-erase-question/m-p/241188#M19581 kef 2013-01-30T07:51:42Z Re: Page boundaries for flash block erase - question https://community.nxp.com/t5/8-bit-Microcontrollers/Page-boundaries-for-flash-block-erase-question/m-p/241189#M19582 <HTML><HEAD></HEAD><BODY><P>many thanks for the reply</P></BODY></HTML> Wed, 30 Jan 2013 09:58:14 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/Page-boundaries-for-flash-block-erase-question/m-p/241189#M19582 admin 2013-01-30T09:58:14Z