2015年9月22日 星期二

有關STM32F4的PDR_ON腳的功用

在規格書中的POWER SUPPLY SUPERVISOR章節提到.
主要是和內部重置功能的啟動有關.

當PDR_ON接到高準位(VDD)時,POR(POWER ON RESET)&PDR(POWER DOWN RESET)以及BOR(Brownout reset)以上這幾個功能才會有效.也就是internal reset on

當PDR_ON的準位低於1.7V時,就可算是internal reset off.
並且以下條件會成立
The integrated power-on reset (POR) / power-down reset (PDR) circuitry is disabled
• The brownout reset (BOR) circuitry is disabled
• The embedded programmable voltage detector (PVD) is disabled
• VBAT functionality is no more available and VBAT pin should be connected to VDD

2015年9月1日 星期二

IEC60601-1 在2012年又有補充規範 改為3.1版

http://60601-1.com/information.html

US FDA deadline for compliance with AAMI ES 60601-1:2005(R)2012+A1:2012
    (Third Edition with Amendment 1) 2016-08-01, per FDA
    Required for new medical equipment and existing equipment requiring FDA re-submission

European Union deadline for compliance with EN 60601-1, Ed.3 + Am.1    (Third Edition with Amendment 1) 2018-01-01, per EU OJ
    Required for all medical equipment on the market (no grandfathering)

依照網頁說明FDA最快在2016/8/1 就要強制實施,CE則是要到2018/1/1才會要求

IEC60601-1-2(2014) ED4.0 發佈

FDA 公布EMC標準過渡時期到2017 ,4,1止


http://industries.ul.com/news/fda-extends-emc-standard-transition-date-to-april-1-2017