M16C65 Datasheet, PDF (731/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
30. Flash Memory
30.2 Memory Map
The flash memory is used as ROM in this product. The flash memory comprises program ROM 1,
program ROM 2, and data flash. Figure 30.1 shows a Flash Memory Block Diagram.
The flash memory is divided into several blocks, each of which can be protected (locked) from
programming or erasing. The flash memory can be rewritten in CPU rewrite, standard serial I/O, and
parallel I/O modes.
If the size of program ROM 1 is over 512 Kbytes, blocks 8 to 11 can be used when the IRON bit in the
PRG2C register is 1 (program ROM 1 addresses 40000h to 7FFFFh enabled).
Program ROM 2 can be used when the PRG2C0 bit in the PRG2C register is set to 0 (program ROM 2
enabled). Program ROM 2 includes a user boot code area.
Data flash can be used when the PM10 bit in the PM1 register is set to 1 (0E000h to 0FFFFh: data flash).
Data flash is divided into block A and block B.
Table 30.3 lists the differences among program ROM 1, program ROM 2, and data flash.
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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