STM32L151 nRST pin... doesn't reset!
Options
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content
2015-04-13 12:08 AM
Posted on April 13, 2015 at 09:08
We are experiencing a very annoying issue... we have a portable application, STM32L151, DVdd=3.0 regulated via an LDO, lithium battery.
Randomly, the MCU freeze and the nRST does... nothing! We need a full power cycle to restart the application. - We checked the Power supply and the layout, everything seems designed as it should be (100nF everywhere, 6 layer board). - During freeze the power consumption is very low, and the pins seem floating. - Freeze is not related to battery SOC. - Only pins accessible are USB D+ and D-, with proper varistors protection. - We perform ESD and burst tests, no freeze here. - HSE external clock, 16MHz, works ok. - Bootloader + application, both jump from active state to low power state (stop mode) - Wake-up from stop mode using EXTI Any hint? #stm32l151-nrst
Labels:
- Labels:
-
STM32L1 Series
This discussion is locked. Please start a new topic to ask your question.
1 REPLY 1
Options
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content
2015-04-13 11:10 PM
Posted on April 14, 2015 at 08:10
I contacted the ST support, hope they are speedy.
Anyone has faced the same issue?