BC68F2130 Datasheet, PDF (51/148 Pages) Holtek Semiconductor Inc – Sub-1GHz RF Transmitter Flash MCU

BC68F2130/BC68F2140
Sub-1GHz RF Transmitter Flash MCU
If the system is woken up from the SLEEP or IDLE Mode by an interrupt, then two possible
situations may occur. The first is where the related interrupt is disabled or the interrupt is enabled
but the stack is full, in which case the program will resume execution at the instruction following
the “HALT” instruction. In this situation, the interrupt which woke-up the device will not be
immediately serviced, but will rather be serviced later when the related interrupt is finally enabled or
when a stack level becomes free. The other situation is where the related interrupt is enabled and the
stack is not full, in which case the regular interrupt response takes place. If the system is woken up
from the DEEP SLEEP Mode by the Time Base 0 interrupt, the program will resume execution from
0000h.
If an interrupt request flag is set high before entering the DEEP SLEEP, SLEEP or IDLE Mode, the
wake-up function of the related interrupt will be disabled.
The accompany flowchart shows the program procedure for waking up from the DEEP SLEEP
Mode.
�CU in DEEP SLEEP �ode
(V15O will be disabled)
Wake-up b� PA or TB0
�CU execute program from 0x0000
(Normal �ode)
IO_ISO_EN=0
(I/O will be released)
PA_WAKE==0 &&
TB0_WAKE==0
Y ^{Power On Reset}
N
Restore Parameter from
Backup �emor�
S�stem_initial_POR
Check & Clear Wake up Flag
Program Execution
Rev. 1.10
51
May 19, 2017