msp430x22x4_ta_21.c

MSP430F2274 单片机C程序调试代码

//******************************************************************************
//  MSP430F22x4 Demo - Timer_A, PWM TA1-2, Up/Down Mode, HF XTAL ACLK
//
//  Description: This program generates two PWM outputs on P1.2/1.3 using
//  Timer_A configured for up/down mode. The value in TACCR0, 128, defines the
//  PWM period/2 and the values in TACCR1 and TACCR2 the PWM duty cycles.
//  Using HF XTAL ACLK as TACLK, the timer period is HF XTAL/256 with a 75%
//  duty cycle on P1.2 and 25% on P1.3.
//  ACLK = MCLK = TACLK = HF XTAL
//  //* HF XTAL REQUIRED AND NOT INSTALLED ON FET *//
//  //* Min Vcc required varies with MCLK frequency - refer to datasheet *//
//
//               MSP430F22x4
//            -----------------
//        /|\|              XIN|-
//         | |                 | HF XTAL (3