Mode Programming And Flash Memory Address Space - Renesas F-ZTAT H8 Series Hardware Manual

19.2.2

Mode Programming and Flash Memory Address Space

As its on-chip ROM, the H8/3048F has 128 kbytes of flash memory. The flash memory is
connected to the CPU by a 16-bit data bus. The CPU accesses both byte data and word data in two
states.
The flash memory is assigned to addresses H'00000 to H'1FFFF on the memory map. The mode
pins enable either on-chip flash memory or external memory to be selected for this area. Table
19.3 summarizes the mode pin settings and usage of the flash memory area.
Table 19.3 Mode Pin Settings and Flash Memory Area
Mode MD
2
Mode 0 0
Mode 1 0
Mode 2 0
Mode 3 0
Mode 4 1
Mode 5 1
Mode 6 1
Mode 7 1
Section 19 Flash Memory (H8/3048F: Dual Power Supply (V
Mode Pin Setting
MD MD
1 0
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
Flash Memory Area Usage
Illegal setting
External memory area
External memory area
External memory area
External memory area
On-chip flash memory area
On-chip flash memory area
On-chip flash memory area
Rev. 7.00 Sep 21, 2005 page 585 of 878
= 12 V))
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REJ09B0259-0700