M16C1N Datasheet, PDF (186/238 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/10 SERIES

M16C/1N Group
19. Flash Memory Version
19.2 Flash Memory
The ROM in the flash memory version is separated between a user ROM area and a boot ROM area.
Figure 19.1 shows the block diagram of flash memory. The user ROM area has 2K-byte block A and B, in
addition to the area that stores a program for microcomputer operation during singe-chip mode.
The user ROM area is divided into several blocks. The user ROM area can be rewritten in all of CPU
rewrite, standard serial I/O, parallel I/O and CAN I/O modes. Block 0 and 1 can be rewritten by setting
FMR0 register's FMR02 bit to "1" and the FMR1 register's FMR16 bit to "1" in CPU rewrite mode only.
Block 2 and 3 can be rewriting by setting the FMR 1 register's FMR 16 bit to "1". Block A and B are
enabled for use by setting the PM1 register's PM10 bit to "1".
The boot ROM area is reserved area. A rewrite control program for standard serial I/O and CAN I/O
modes is written into the boot ROM area when the device is shipped from the factory. The boot ROM area
can be rewritten in parallel I/O mode.
00F00016
Block A : 2K bytes (Note 2)
00FFFF16
Block B : 2K bytes (Note 2)
Data ROM area
0F000016
Block 3 : 32K bytes (Note 5)
0F7FFF16
0F800016
Block 2 : 16K bytes (Note 5)
0FBFFF16
0FC00016
Block 1 : 8K bytes (Note 3)
0FDFFF16
0FE00016
Block 0 : 8K bytes (Note 3)
0FFFFF16
User ROM area (Note 1)
Note 1: To specify a block, use an even address in that block.
Note 2: Block A and B can be mode usable by setting the PM1 register’s PM10 bit to "1".
Note 3: Block 0 and 1 can be rewritten by setting FMR0 register’s FMR02 bit to "1" and the FMR
1 register’s FMR16 bit to "1" in CPU rewrite mode only. Block 2 and 3 can be rewriting
by setting the FMR1 register’s FMR16 bit to "1".
Note 4: The boot ROM area is reserved area. This area can be rewritten in parallel I/O mode.
Note 5: Block 2 and 3 can be rewriting by setting the FMR1 register’s FMR16 bit to "1" (in CPU
rewrite mode only).
0FF00016
0FFFFF16
4K bytes (Note 4)
Boot ROM area (Reserved area)
Figure 19.1 Block diagram of flash memory
Rev.1.00 Oct 20, 2004 page 174 of 222
REJ09B0007-0100Z