tmp89fm42l TOSHIBA Semiconductor CORPORATION, tmp89fm42l Datasheet - Page 340

• Manufacturer Part Number: tmp89fm42l
• Description: 8 Bit Microcontroller Tlcs-870/c1 Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

21.2
Functions
RA006
21.2.5
must normally be set to "0". In using FLSSTB<FSTB> built into the TMP89FM42L, 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.
"0" is effective), FSTB is automatically initialized to "0", and then the interrupt vector of the flash memory area
is read. If an interrupt occurs when the interrupt vector is assigned to the RAM area (SYSCR3<RVCTR> = "1"
is effective), FSTB is not cleared to "0", and then the interrupt vector of the RAM area is read. In this case, the
RAM area should be designated as a referential address of interrupt vector. If the flash memory area is designated
as a referential address of interrupt vector, a flash standby reset occurs after an interrupt is generated.
FLSSTB<FSTB> is the register provided to maintain the compatibility with the previous product version. It
To access the flash memory again after setting FLSSTB<FSTB> to "1", set FLSSTB<FSTB> to "0" by using
If an interrupt occurs when the interrupt vector is assigned to the flash memory area (SYSCR3<RVCTR> =
Flash memory standby control (FLSSTB<FSTB>)
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