Rainbow-electronics T89C51CC02 Manual de usuario descargar pdf (Pagina 21)

Rev.A - May 17, 2001 21

Preliminary

T89C51CC02

The FLASH memory enters a busy state as soon as programming is launched. In this state, the memory is no

more available for fetching code. Thus to avoid any erratic execution during programming, the CPU enters Idle

mode. Exit is automatically performed at the end of programming.

Caution:

Interrupts that may occur during programming time must be disable to avoid any spurious exit of the idle mode.

7.3.3. Status of the flash memory

The bit FBUSY in FCON register is used to indicate the status of programming.

FBUSY is set when programming is in progress.

7.3.4. Selecting FM1/FM1

The bit ENBOOT in AUXR1 register is used to choose between FM0 and FM1 mapped up to F800h.

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Rainbow-electronics T89C51CC02 Manual de usuario Pagina 21