BasicTimerBasicTimer嵌入式研发中心嵌入式研发中心MSP430F449结构框图FLASH16kB-60kBRAM512B-2kBPower-OnResetSVS+Brown-OutProtection8MhzFLL+OscillatorWatchdog15-bitBasicTimer1(2)8-bitLCDDriver160Seg.RISCCPU16-bitJTAG/EEMPort5/6ACLKSMCLKMABMDBTimer_B716-bitTimer_A316-bitPort3/4Port1/2withIRQMPY/MPYSMAC/MACS8/16-bitComp_AADC12200kspsautoscanVrefTempMCLKUSART0UART/SPIUSART1UART/SPIJTAG4LFXT1XT2基本定时器(BT)讲解•基本定时器的结构•控制寄存器试验:test44x_bt_125ms.c基本定时器的结构•RTC功能•软件时钟增加•可选时钟源•两个独立的8位定时器•独立中断•LCD频率发生LCD频率发生LCD频率计算公式:举例:BT中断BT中断相关寄存器IE2中断确定寄存器2IFG2中断标志寄存器2BT中断标志BTIFG由BTCNT2溢出产生该标志位的清除:1、相应BT中断向量2、软件清除相关寄存器(初始状态不定)相关寄存器BTCTL控制寄存器BTCNT18位定时器BTCNT28位定时器尽心尽力,成就您我!