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R8C/13 Datasheet(PDF) 177 Page - Renesas Technology Corp |
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R8C/13 Datasheet(HTML) 177 Page - Renesas Technology Corp |
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177 / 224 page  R8C/13 Group 17. Flash Memory Version Rev.1.20 Jan 27, 2006 page 166 of 205 REJ09B0111-0120 17.2 Memory Map The ROM in the flash memory version is separated between a user ROM area and a boot ROM area (reserved area). Figure 17.1 shows the block diagram of flash memory. The user ROM area has the 2K-byte Block A and the 2K-byte Block B (data flash), in addition to an area (program ROM) which stores the microcomputer operation program. The user ROM area is divided into several blocks. The user ROM area can be rewritten in CPU rewrite and standard serial I/O modes. When rewriting the Block 0 and Block 1 in CPU rewrite mode, set the FMR02 bit in the FMR0 register to “1” (rewrite enabled), and when setting the FMR15 bit in the FMR1 register to “0” (rewrite enabled), the Block 0 is rewritable. When setting the FMR16 bit to “0” (rewrite enabled), the Block 1 is rewritable. Also when setting the PM10 bit in the PM1 register to “1”(enabled), the Block A and Block B are usable. The rewrite program for standard serial I/O mode is stored in the boot ROM area before shipment. The boot ROM area and the user ROM area share the same address, but have an another memory. Figure 17.1 Flash Memory Block Diagram 8 Kbytes 0FFFF16 Boot ROM area (reserved area)(2) NOTES: 1. When setting the FMR02 bit in the FMR0 register to “1” (rewrite enabled) and the FMR15 bit in the FMR1 register to “0” (rewrite enabled), the Block 0 is rewritable. When setting the FMR16 bit to “0” (rewrite enabled), the Block 1 is rewritable (only for CPU rewrite mode). 2. This area is to store the boot program provided by Renesas Technology. Block 0 : 8 Kbytes(1) Block 1 : 8 Kbytes(1) 0FFFF16 0E00016 User ROM area 0C00016 0DFFF16 0E00016 0200016 02FFF16 Block A : 2 Kbytes Block B : 2 Kbytes Block 0 : 8 Kbytes(1) Block 1 : 4 Kbytes(1) 0FFFF16 User ROM area 0D00016 0DFFF16 0E00016 0200016 02FFF16 Block A : 2 Kbytes Block B : 2 Kbytes Block 0 : 8 Kbytes(1) 0FFFF16 User ROM area 0E00016 0200016 02FFF16 Block A : 2 Kbytes Block B : 2 Kbytes 16 Kbytes ROM Product12 Kbytes ROM Product8 Kbytes ROM Product Data flsh Program ROM |
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