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R8C2K Datasheet(PDF) 380 Page - Renesas Technology Corp |
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R8C2K Datasheet(HTML) 380 Page - Renesas Technology Corp |
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380 / 471 page  R8C/2K Group, R8C/2L Group 20. Flash Memory Rev.1.10 Dec 21, 2007 Page 363 of 450 REJ09B0406-0110 20.2 Memory Map The flash memory contains a user ROM area and a boot ROM area (reserved area). Figure 20.1 shows the Flash Memory Block Diagram for R8C/2K Group and Figure 20.2 shows the Flash Memory Block Diagram for R8C/2L Group. The user ROM area contains program ROM. In addition, the R8C/2L Group has on-chip data flash. The user ROM area is divided into several blocks. The user ROM area can be rewritten in CPU rewrite mode, and standard serial I/O mode, and parallel I/O mode. The rewrite control program (standard boot 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 separate memory areas. Figure 20.1 Flash Memory Block Diagram for R8C/2K Group Figure 20.2 Flash Memory Block Diagram for R8C/2L Group Boot ROM area (reserved area)(2) 8 Kbytes 0E000h 0FFFFh User ROM area User ROM area Block 0: 8 Kbytes(1) 0E000h 0FFFFh Block 0: 8 Kbytes(1) 0C000h 0FFFFh 16 Kbytes ROM product Program ROM 8 Kbytes ROM product NOTES: 1. When the FMR02 bit in the FMR0 register is set to 1 (rewrite enabled) and the FMR15 bit in the FMR1 register is set to 0 (rewrite enabled), block 0 is rewritable. When the FMR16 bit is set to 0 (rewrite enabled), block 1 is rewritable (only for CPU rewrite mode). 2. This area is for storing the boot program provided by Renesas Technology. Block 1: 8 Kbytes(1) 0DFFFh 0E000h Boot ROM area (reserved area)(2) 8 Kbytes 0E000h 0FFFFh User ROM area Block 0: 8 Kbytes(1) 0E000h 0FFFFh User ROM area Block 1: 8 Kbytes(1) 0C000h 0FFFFh Block B: 1 Kbyte Block A: 1 Kbyte 02400h 02BFFh 16 Kbytes ROM product Program ROM Data flash Block B: 1 Kbyte Block A: 1 Kbyte 02400h 02BFFh 8 Kbytes ROM product Block 0: 8 Kbytes(1) 0DFFFh 0E000h NOTES: 1. When the FMR02 bit in the FMR0 register is set to 1 (rewrite enabled) and the FMR15 bit in the FMR1 register is set to 0 (rewrite enabled), block 0 is rewritable. When the FMR16 bit is set to 0 (rewrite enabled), block 1 is rewritable (only for CPU rewrite mode). 2. This area is for storing the boot program provided by Renesas Technology. |
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