Introduction - If you have any usage issues, please Google them yourself
Toggle P1.0 using software and the TA_0 ISR. Timer_A is
configured for up mode, thus the timer overflows when TAR counts
to CCR0. In this example, CCR0 is loaded with 1000-1.
ACLK = TACLK = INCLK = 32768Hz, MCLK = SMCLK = default DCO ~1.045Mhz