说明：  按键LED控制芯片tm1628的中文资料，1628的使用范围很广，在以前的家电，DVD，vcd等上均有使用。其控制的LED亮度可调，分为16级亮度。
(Button LED control chip tm1628 of the Chinese data, the use of a wide range of 1628 in the former home appliances, DVD, vcd and so on are used. Its control of LED brightness adjustable, divided into 16 levels of brightness.)