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R5F6452MKFD Datasheet(PDF) 19 Page - Renesas Technology Corp |
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R5F6452MKFD Datasheet(HTML) 19 Page - Renesas Technology Corp |
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19 / 135 page  REJ03B0231-0110 Rev.1.10 Page 19 of 130 Sep 06, 2010 R32C/152 Group 3. Memory 3. Memory Figure 3.1 shows the memory map of the R32C/152 Group. The R32C/152 Group provides a 4-Gbyte address space from 00000000h to FFFFFFFFh. The internal ROM is mapped to the end of the memory map with the ending address fixed at FFFFFFFFh. Therefore, the 1-Mbyte internal ROM is mapped from FFF00000h to FFFFFFFFh. The fixed interrupt vector table which contains each start address of interrupt handlers is mapped from FFFFFFDCh to FFFFFFFFh. The internal RAM is mapped to the beginning of the memory map with the starting address fixed at 00000400h. Therefore, the 48-Kbyte internal RAM is mapped from 00000400h to 0000C3FFh. Besides being used for data storage, the internal RAM functions as a stack(s) for subroutines and/or interrupt handlers. Special Function Registers (SFRs), which are control registers for peripheral functions, are mapped from 00000000h to 000003FFh, and from 00040000h to 0004FFFFh. Unoccupied SFR locations are reserved. No access is allowed. Figure 3.1 Memory Map Internal RAM SFR1 SFR2 Internal ROM 00000000h FFFFFFFFh Reset NMI Reserved Watchdog timer (2) Reserved Reserved BRK instruction Overflow Undefined instruction FFFFFFFFh FFFFFFDCh Notes: 1. Additional two 4-Kbyte spaces (blocks A and B) for storing data are provided in the flash memory version. 2. The watchdog timer interrupt shares the vector table with the oscillator stop detection interrupt and low voltage detection interrupt. YYYYYYYYh 00000400h 0000C400h Reserved 00040000h Internal ROM (Data space) (1) 00060000h 00062000h Reserved 00050000h Reserved Internal ROM Capacity YYYYYYYYh 768 Kbytes FFF40000h 1 Mbyte FFF00000h |
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