相信大家也应该看过S3C44B0X的这一段介绍
maximum interval rescaler = 1) (prescaler = 255) (TCNTBn = 65535) 1/2 ( MCLK = 66 MHz ) 0.030 us (33.0 MHz ) 7.75 us (58.6 KHz ) 0.50 sec 1/4 ( MCLK = 66 MHz ) 0.060 us (16.5 MHz ) 15.5 us (58.6 KHz ) 1.02 sec 1/8 ( MCLK = 66 MHz ) 0.121 us (8.25 MHz ) 31.0 us (29.3 KHz ) 2.03 sec 1/16 ( MCLK = 66 MHz ) 0.242 us (4.13 MHz ) 62.1 us (14.6 KHz ) 4.07 sec 1/32 ( MCLK = 66 MHz ) 0.485 us (2.06 MHz ) 125 us (7.32 KHz ) 8.13 sec
我是这样算的:以第一种情况为例,最大255分频,那么这个时钟源频率应该为66/255/2=0.129MHz才对呀?是不是我的单位没有弄对呢?请赐教哇!