tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 324

• Manufacturer Part Number: tmp89fm42
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

21. Flash Memory
RA003
21.2.5 Flash memory standby control (FLSSTB<FSTB>)
0xXXXX
0xXXXX
0xFFFF
0xFFFF
0x17FF
0x0000
0x003F
0x0040
0x1000
0x0000
0x003F
0x0040
0x1000
0x1800
Note : XXXXH is end of RAM address.
must normally be set to "0". In using FLSSTB<FSTB> built into the TMP89FM42, the following point should
be noted: FLSSTB<FSTB> can be configured only by using a program allocated to RAM. If it is configured by
using a program allocated to the flash memory, the configured value will be invalidated and does not take effect.
a program allocated to RAM. If the flash memory is accessed with FLSSTB<FSTB> set to "1," a flash standby
reset will occur.
To access the flash memory again after setting FLSSTB<FSTB> to "1", set FLSSTB<FSTB> to "0" by using
FLSSTB<FSTB> is the register provided to maintain the compatibility with the previous product version. It
Data area
Data area
BOOTROM
RAM
RAM
SFR
SFR
Figure 21-2 Show/Hide Switching for BOOTROM and RAM
If SYSSR4<RAREAS>=“0”
If SYSSR4<RAREAS>=“0”
FLSCR1<BAREA>=“0”
FLSCR1<BAREA>=“1”
0xFFFF
0xFFFF
0x17FF
0x0000
0x0000
0x1000
0x1800
Code area
Code area
BOOTROM
Page 310
0xXXXX
0xXXXX
0xXXXX
0xFFFF
0xFFFF
0xFFFF
0x003F
0x17FF
0x17FF
0x0000
0x0040
0x1000
0x0000
0x003F
0x0040
0x1000
0x1800
0x0000
0x003F
0x0040
0x1000
0x1800
Data area
Data area
Data area
BOOTROM
BOOTROM
RAM
RAM
RAM
SFR
SFR
SFR
If SYSSR4<RAREAS>=“1”
If SYSSR4<RAREAS>=“1”
FLSCR1<BAREA>=“0”
FLSCR1<BAREA>=“1”
In serial PROM mode
0xXXXX+1
0xXXXX
0xXXXX
0xXXXX
0xFFFF
0xFFFF
0xFFFF
0x003F
0x17FF
0x17FF
0x0000
0x0040
0x0000
0x003F
0x0040
0x1000
0x1800
0x0000
0x003F
0x0040
0x1000
0x1800
Code area
Code area
Code area
BOOTROM
BOOTROM
RAM
RAM
RAM
TMP89FM42