SLLA535 December 2022 TLIN1431-Q1
There are internal pull-ups or pull-downs on critical terminals to place the device into known states if the terminal floats. Several of these are only active when the TLIN1431x-Q1 is in SPI control.
| Safety Mechanism | Pin | Pull-up or Pull-down | Typical Value | Comment |
|---|---|---|---|---|
| SM-15 | CLK | Pull-up | 240 kΩ | Keeps CLK pin from floating |
| SM-16 | SDI | Pull-up | 240 kΩ | Keeps SDI pin from floating |
| SM-17 | nCS | Pull-up | 240 kΩ | Keeps nCS from floating and enabling SPI when not intended |
| SM-18 | DIV_ON | Pull-down | 370 kΩ | Keeps DIV_ON pin from floating and turning on the VBAT monitor when not intended |
| SM-19 | TXD | Pull-up | 350 kΩ | Keeps TXD pin from floating dominant which could cause LIN but to be forced dominant |
| SM-20 | LIN | Pull-up | 45 kΩ | Keeps LIN bus from being forced dominant which would cause RXD pin to be forced dominant |
| SM-21 | nRST | Pull-up | 45 kΩ | Keeps nRST from floating and as active low pin indicates when VCC is in under-voltage, watchdog error or device is in reset mode. |