ZHCSH09 October 2017 MSP432E401Y
PRODUCTION DATA.
Table 4-6 lists the recommended connections for unused pins.
Table 4-6 lists two options: an acceptable practice and a preferred practice for reduced power consumption and improved EMC characteristics. If a module is not used in a system, and its inputs are grounded, it is important that the clock to the module is never enabled by setting the corresponding bit in the RCGCx register.
| FUNCTION | SIGNAL NAME | PIN NUMBER | ACCEPTABLE PRACTICE | PREFERRED PRACTICE |
|---|---|---|---|---|
| ADC | VREFA+ | 9 | VDDA | VDDA |
| Ethernet | EN0RXIN | 53 | NC | NC |
| EN0RXIP | 54 | NC | NC | |
| EN0TXON | 56 | NC | NC | |
| EN0TXOP | 57 | NC | NC | |
| RBIAS | 59 | Connect to ground through 4.87-kΩ resistor. | Connect to ground through 4.87-kΩ resistor. | |
| GPIO | PA1 (U0Tx) | 34 | NC | GND(1) |
| PA4 (SSI0XDAT0) | 37 | NC | GND(2) | |
| All unused GPIOs | NC | GND | ||
| Hibernate | HIB | 65 | NC | NC |
| VBAT | 68 | NC | VDD | |
| WAKE | 64 | NC | GND | |
| XOSC0 | 66 | NC | GND | |
| XOSC1 | 67 |
NC | NC | |
| System Control | OSC0 | 88 |
NC | GND |
| OSC1 | 89 |
NC | NC | |
| RST | 70 |
VDD | Pull up to VDD with 0 to 100-kΩ resistor.(3) | |
| USB | USB0DM / PL7 | 93 |
NC | Pull down to GND with 1-kΩ resistor.(4) |
| USB0DP / PL6 | 94 |
NC | Pull down to GND with 1-kΩ resistor.(4) |