Renesas PROM Programming Adapter PCA7448 - Manual (Page 15)

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Chapter 6. Memory Maps
Figure 6.1 shows memory maps of the MCU and the PROM programmer.
Figure 6.1 Memory maps (M5M27C256 mode)
*1: This area is fixed to "1" on the PROM programmer.
*2: When writing, the lower 5 bits and the upper 5 bits are divided and then written into the MCU.
MCU
(M34524EDFP/M34554EDFP)
PROM programmer
(M5M27C256 mode)
0000h 0000h
3FFFh
*1
*1
3FFFh
4000h
7FFFh
Upper 5 bits
Lower 5 bits
Programming area
(10 bits x 16 KB)