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DS100BR410 internal pull-up pull-down

Lopa Patel70
Prodigy 10 points
Other Parts Discussed in Thread: DS100BR410

Hello,

What is the exact internal pull-up pull-down resistor value for the DS100BR410 pins

1.  BST_2 internal pull-up

2.  BST_1 internal pull-up

3.  BST_0 internal pull-down

4.  EN_3..0 internal pull-up

5.  PIN_MODE internal pull-up

6.  OOB_DIS internal pull-down

7.  Are direct connections to VDD and GND recommended - or do you recommend a 1k pull-up/pull-down for the above and all other select pins (CS, DE_SEL, VOD_EL etc..aside from the 20k that is already recommended in datasheet)?

8.  IF the following pins SD3..0, CS, SDC, SDA are No Connects, do you see any issues? 

Thanks for your help.

- Lopa

  • 0
    TI__Mastermind 29655 points

    Hi Lopa,

    Please see answers to questions below:

    1-6. The internal pull-up / pull-down resistor value for the DS100BR410 pins are designed to be approximately 100k. These pull-up/pull-down values are only applicable for pins where the Pin Description describes that they are internally pulled up or pulled down.

    7. You can directly connect VDD and GND to these inputs if you prefer. However, I recommend a 1k resistor for the external pull-up/pull-down. Using an external pull-up/pull-down resistor helps to control current on the input pins, while still keeping within the VIH and VOL threshold limits.

    8. SD3..0 can be left open as no-connect. If you are not using CS, SDC, and SDA for SMBus control, I recommend tying the pins to GND to ensure proper pin-mode control.

    Thanks,

    Michael