tmp89fm42a TOSHIBA Semiconductor CORPORATION, tmp89fm42a Datasheet - Page 31

• Manufacturer Part Number: tmp89fm42a
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

2.2
Memory space
RA000
Flash memory control register 1
Flash memory control register 2
(0x0FD0)
(0x0FD1)
FLSCR1
FLSCR2
2.2.1.3
Note:The flash memory control register 1 has a double-buffer structure comprised of the register FLSCR1 and a shift
register. Writing "0xD5" to the register FLSCR2 allows a register setting to be reflected and take effect in the shift
register. This means that a register setting value does not take effect until "0xD5" is written to the register FLSCR2.
The value of the shift register can be checked by reading the register FLSCRM.
Read/Write
BAREA
Read/Write
Bit Symbol
Bit Symbol
CR1EN
After reset
After reset
The Flash is mapped to 0x8000 to 0xFFFF in the code area after reset release.
Flash
Specifies mapping of the BOOT-
ROM in the code and data areas
FLSCR1 register
enable/disable control
7
0
7
*
(FLSMD)
R/W
6
1
6
*
5
0
5
*
Others
Page 12
0 :
1 :
0xD5
The BOOTROM is not mapped to 0x1000 to 0x17FF in the code area and
to 0x1000 to 0x17FF in the data area.
The BOOTROM is mapped to 0x1000 to 0x17FF in the code area and to
0x1000 to 0x17FF in the data area.
Enable a change in the FLSCR1 setting
Reserved
BAREA
R/W
4
0
4
*
CR1EN
W
3
0
3
*
(FAREA)
R/W
2
0
2
*
1
0
1
*
TMP89FM42A
(ROMSEL)
R/W
0
0
0
*