MSP430F6726A: Regarding XT1DRIVE

user5994067

Intellectual 820 points

Part Number: MSP430F6726A

What is the drive current at XT1DRIVE = 11b?

If possible, please tell me the XT1DRIVE current value of XT1DRIVE = 00, 01, 10, 11b.

Best Regards,

over 5 years ago

0 user5994067 over 5 years ago

Intellectual 820 points

Hi,

The data sheet shows the difference currents of 01b, 10b, and 11b for XT1DRIVE = 00b.

What is the absolute value at 00b?

Best regards,

0 Xiaodong LI over 5 years ago in reply to user5994067

TI__Mastermind 23275 points

Hi, There are the difference currents of XT1DRIVE setting 01b, 10b, and 11b. There is no currents data on XT1DRIVE setting 00b. I don't know the background why there is no the currents data on XT1DRIVE setting 00b. but according to UG. the currents on XT1DRIVE 00b should be a little bit smaller than XT1DRIVE 01b. Thanks!

0 user5994067 over 5 years ago in reply to Xiaodong LI

Intellectual 820 points

Hi,

thank you for your answer.

I have connected a 32K crystal with a maximum drive level of 0.5μW to the XT1,

but is it okay to understand that the maximum drive level is 0.5μW or less even with XT1DRIVE = 3?

Best regards,

0 user5994067 over 5 years ago in reply to user5994067

Intellectual 820 points

Hi,

The maximum series resistance of the 32K crystal to be connected is 90KΩ.

Best regards,

0 Xiaodong LI over 5 years ago in reply to user5994067

TI__Mastermind 23275 points

Hi, if you keep XT1DRIVE = 3 as default, (Maximum drive capability and maximum current consumption for XT1 LF mode. XT1 oscillator operating range in HF modeis 24 MHz to 32 MHz). according to DS, TYP current is 0.29uA at 3V at XT1DRIVE = 3.

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MSP430F6726A: Regarding XT1DRIVE