SFFS138 December 2021 TCAN1164-Q1
There are internal pull ups on critical terminals to place the device into known states if the terminal floats.
TERMINAL | PULL-UP or PULL-DOWN | COMMENT |
---|---|---|
TXD | Pull-up | Weakly biases TXD toward recessive to prevent bus blockage or TXD DTO triggering |
nCS | Pull-up | Weakly biases nCS high to prevent un-intended SPI communication |
SCLK | Pull-down | Weakly biased to ground |
The following sections provide the functional safety mechanisms that cover floating pins: