MSP430F47177: Electrical characteristics of external clock in LF mode

Satoshi Shinohara

Expert 1230 points

Part Number: MSP430F47177

Could you let me know the electrical characteristics of XIN external clock in LF mode?

Best Regards,

Satoshi Shinohara

over 7 years ago

0 Andre Frantzke over 7 years ago

TI__Expert 5490 points

Hi,

please check page 42 of the data sheet. http://www.ti.com/slas626

What characteristics do you need for XIN?

Best regards,

Andre

0 Satoshi Shinohara over 7 years ago in reply to Andre Frantzke

Expert 1230 points

Hi Andre,
Thank you for your reply.
I will be glad to get the more specification below.

- Clock high time
- Clock low time

Best Regards,
Satoshi Shinohara

0 Andre Frantzke over 7 years ago in reply to Satoshi Shinohara

TI__Expert 5490 points

In general you connect an external oscillator to XIN/XOUT. The frequency is f=32768Hz, so the period is T=30,517us.
With a duty cycle of 50% you get
Thigh=Tlow=T/2=15,259us

Best regards,
Andre

0 Satoshi Shinohara over 7 years ago in reply to Andre Frantzke

Expert 1230 points

Hi Andre,

Thank you for your answer.

Best Regards,
Satoshi Shinohara

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MSP430F47177: Electrical characteristics of external clock in LF mode