[MSP430G2544] Internal Pullup or pulldown resistor values

Kaka

Hi TI Experts,

Please let me confirm the following question.

[Question]
MSP430G2x44 family is defined the internal "Pullup or pulldown resistor" values as follow at datasheet on page 17.
*****************
Maximum: 50 k ohms
Typical: 35 k ohms
Minimum: 20k ohms
Note: The test condition is Vcc=3V.
*****************
My customer request to us to provide the data when the VCC is 2.8V. Can customer think that those values are the same as 3V?

If you have any questions, please let me know.
Best regards.
Kaka

over 8 years ago

0 Dennis Eichmann over 8 years ago

Guru 74080 points

Yes, your customer can expect the same value for 2.8V as well.

0 Kaka over 8 years ago in reply to Dennis Eichmann

Guru 24520 points

Hi Dennis,

Thank you for your response.
If I get more questions form them, please let me confirm them.

Best regards.
Kaka

0 Tony Philipsson over 8 years ago

Guru 12050 points

As you can see, getting accurate resistors values on fabs without laser trimming is hard,
as the range is very big, so as to care what the values are with 3 vs 2.8v is minute in the scope of things. (the change is very very small)
Solutions:
use 1% external resistor if precision is needed.
100K-200K Ohm 5% if you're trying to save power on a button switch pull-up.
Use 2.2K if fast recovery in open-drain is needed (like fast+ i2c)

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[MSP430G2544] Internal Pullup or pulldown resistor values