This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

MSP430FR2433: MSP430FR2433

Part Number: MSP430FR2433

Hi, 

We have our product with TI chip MSP430FR2433IRGER sometimes doesn't work, or it works but don't work again. 

It is a crystal issue? We are using  AS75-32768D-PF 32.768kHz Crystal, 1.6x1.0mm 9pF 20ppm -40/+85°C ESR max 90k.

Is the the crystal well chosen? 

The configuration for the crystal is: 

  • AGC is enabled (XT1AGCOFF = 0)
  • XT1DRIVE value is 3 (default value)
  • Low frequency mode
  • XT1AUTOOFF = 1

We detect the duty cycle is near 50%. 

We test the crysal's stability according your application note with negative resistance (SLAA322D §4.2), 

we found the safety factor >6. Our design is very safe according to the application note. 

Please don't hesite to comment our test. 

Thank you in advance

Best regards 

Liang 

**Attention** This is a public forum