一下是msp430FG4619在IAR环境下编写的程序，有3个错误，求解释！！

#include "msp430fg4619.h"

void main( void )
{
// Stop watchdog timer to prevent time out reset
WDTCTL = WDTPW + WDTHOLD;
TACTL=TASSEL0+TACLR;
CCTL0=CCIE;
CCRO=32768;
P5DIR|=0X02;
TACTL|=MC0;
_EINT();
while(1)
{
_BIS_SR(CPUOff);
_NOP();
}
}
#progma vector=TIMERA0_VECTOR
__interrupt void Timer_A(void)
{
P5OUT^=0X02;
}
Error[Pe020]: identifier "CCRO" is undefined E:\IAR5.30\msp430_project\main.c 9

Error[Pe020]: identifier "CPUOff" is undefined E:\IAR5.30\msp430_project\main.c 15

Error[Pe011]: unrecognized preprocessing directive E:\IAR5.30\msp430_project\main.c 19

Error while running C/C++ compiler