STM32F4Timer

ref
https://blog.csdn.net/zhuxinmingde/article/details/131784852?ops_request_misc=&request_id=&biz_id=102&utm_term=STM32%20%E9%AB%98%E7%BA%A7%EF%BC%8C%E6%99%AE%E9%80%9A%EF%BC%8C%E5%9F%BA%E6%9C%AC%E5%AE%9A%E6%97%B6%E5%99%A8&utm_medium=distribute.pc_search_result.none-task-blog-2_allsobaiduweb~default-1-131784852.142^v99control&spm=1018.2226.3001.4187
1. Timer resouce
Timer1 & 8高级定时器，如捕获，死区输出
Timer2_5，Timer914通用定时器
timer6, 7基本定时器

2. Timer clock
AHB, advaced high performace bus
APB, advanced peripheral Bus