JAJSH22C March 2019 – September 2021 MSP430FR2475 , MSP430FR2476
PRODUCTION DATA
The eUSCI modules are used for serial data communications. The eUSCI_A module supports either UART or SPI communications. The eUSCI_B module supports either SPI or I2C communications. Additionally, eUSCI_A supports automatic baud-rate detection and IrDA. The eUSCI_A and eUSCI_B are connected either from P1 port or P2 port, it can be selected from the USCIA0RMP or USCIBxRMP bits of SYSCFG2 and SYSCFG3. Table 9-11 lists the pin configurations that are required for each eUSCI mode.
eUSCI_A0 | PIN (PxSEL Selection) | UART | SPI |
P1.4(1) | TXD | SIMO | |
P1.5(1) | RXD | SOMI | |
P1.6(1) | – | SCLK | |
P1.7(1) | – | STE | |
PIN (PxSEL Selection) | UART | SPI | |
P5.2(2) | TXD | SIMO | |
P5.1(2) | RXD | SOMI | |
P5.0(2) | – | SCLK | |
P4.7(2) | – | STE | |
eUSCI_A1 | PIN (PxSEL Selection) | UART | SPI |
P2.6 | TXD | SIMO | |
P2.5 | RXD | SOMI | |
P2.4 | – | SCLK | |
P3.1 | – | STE | |
eUSCI_B0 | PIN (PxSEL Selection) | I2C | SPI |
P1.0(1) | – | STE | |
P1.1(1) | – | SCLK | |
P1.2(1) | SDA | SIMO | |
P1.3(1) | SCL | SOMI | |
PIN (PxSEL Selection) | I2C | SPI | |
P5.6(2) | – | STE | |
P5.5(2) | – | SCLK | |
P4.6(2) | SDA | SIMO | |
P4.5(2) | SCL | SOMI | |
eUSCI_B1 | PIN (PxSEL Selection) | I2C | SPI |
P2.7(1) | – | STE | |
P3.5(1) | – | SCLK | |
P3.2(1) | SDA | SIMO | |
P3.6(1) | SCL | SOMI | |
PIN (PxSEL Selection) | I2C | SPI | |
P5.4(2) | – | STE | |
P5.3(2) | – | SCLK | |
P4.4(2) | SDA | SIMO | |
P4.3(2) | SCL | SOMI |