tmp89fm43l TOSHIBA Semiconductor CORPORATION, tmp89fm43l Datasheet - Page 340

• Manufacturer Part Number: tmp89fm43l
• Description: 8 Bit Microcontroller Tlcs-870/c1 Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

21.2
Functions
RA006
21.2.3
21.2.4
area. To restore the RAM area to the initial state of mapping, set SYSCR3<RAREA> to "0", and then set "0xD4"
on SYSCR4.
0x17FF in the code and data areas is masked by flash memory, and 2K-byte (first half of 4KB) BOOTROM is
mapped. If you do not want to map BOOTROM, set "0xD5" on FLSCR2<CR1EN> after setting
FLSCR1<BAREA> to "0".
program (API) for performing an erase or write on flash memory in a simple manner is also built into one part
in the BOOTROM area. Therefore, by calling a subroutine in the support program after BOOTROM is mapped,
it is possible to erase, write and read flash memory easily.
0x1FFF in the code area, irrespective of the FLSCR1<BAREA> setting. BAREA is always "1", and the set
BAREA value remains unchanged, even if data is written. "1" is always read from BAREA.
If "0xD4" is set on SYSCR4 after SYSCR3<RAREA> is set to "1" in MCU mode, RAM is mapped to the code
In serial PROM mode, RAM is mapped to the code area, irrespective of the SYSCR3<RAREA> setting.
If "0xD5" is set on FLSCR2<CR1EN> after FLSCR1<BAREA> is set to "1" in MCU mode, 0x1000 through
A set of codes for programming flash memory in serial PROM mode are built into BOOTROM, and a support
In serial PROM mode, BOOTROM is mapped to 0x1000 through 0x17FF in the data area and 0x1000 through
RAM area switching (SYSCR3<RAREA>)
BOOTROM area switching (FLSCR1<BAREA>)
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