JAJSEE3D January 2018 – January 2021 MSP430FR2422
PRODUCTION DATA
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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 USCIARMP of SYSCFG3 or USCIBRMP bit of SYSCFG2. Table 9-11 lists the pin configurations that are required for each eUSCI mode.
eUSCI_A0 | PIN (USCIARMP = 0) | UART | SPI |
P1.4 | TXD | SIMO | |
P1.5 | RXD | SOMI | |
P1.6 | – | SCLK | |
P1.7 | – | STE | |
PIN (USCIARMP = 1) | UART | SPI | |
P2.0 | TXD | SIMO | |
P2.1 | RXD | SOMI | |
P1.6 | – | SCLK | |
P1.7 | – | STE | |
eUSCI_B0 | PIN (USCIBRMP = 0) | I2C | SPI |
P1.0 | – | STE | |
P1.1 | – | SCLK | |
P1.2 | SDA | SIMO | |
P1.3 | SCL | SOMI | |
PIN (USCIBRMP = 1) | I2C | SPI | |
P2.3 | – | STE | |
P2.4 | – | SCLK | |
P2.5 | SDA | SIMO | |
P2.6 | SCL | SOMI |