SWAS037C February 2019 – December 2024 CC3135
PRODUCTION DATA
All unused pin should be configured as stated in Table 6-3.
| FUNCTION | SIGNAL DESCRIPTION | PIN NUMBER | ACCEPTABLE PRACTICE | PREFERRED PRACTICE |
|---|---|---|---|---|
| DIO | Digital input or output | Wake up I/O source should not be floating during hibernate. All the I/O pins will float while in Hibernate and Reset states. Ensure pullup and pulldown resistors are available on board to maintain the state of the I/O. Leave unused DIOs as NC | ||
| No Connect | NC | 26 | Unused pin, leave as NC. | Unused pin, leave as NC |
| SOP | Configuration sense-on-power | Ensure pulldown resistors are available on unused SOP pins | 69.8K pulldown resistor on SOP0 and SOP1 used as switch control pins, 100K pull down on SOP2 | |
| Reset | RESET input for the device | Never leave the reset pin floating | ||
| Clock | RTC_XTAL_N | When using an external oscillator, add a 100kΩ pullup resistor to VIO | ||
| WLAN_XTAL_N | When using an external oscillator, connect to ground if unused |