Datasheet

MSP430F471x3, MSP430F471x6, MSP430F471x7
MIXED SIGNAL MICROCONTROLLER
SLAS626C -- OCTOBER 2008 -- REVISED MARCH 2011
63
POST OFFICE BOX 655303  DALLAS, TEXAS 75265
Port P2 (P2.0 to P2.5) pin functions
P
I
N
N
A
M
E
(
P
2
X
)
X
F
U
N
C
T
I
O
N
CONTROL BITS / SIGNALS
PIN N
A
ME (P2.
X
)
X
FUNCTION
P2DIR.x P2SEL.x CAPD.x
P2.0/ 4
P2.0 (I/O) I: 0, O: 1 0 0
/
UCB1STE/UCA1CLK
UCB1STE/UCA1CLK (see Note 1, 2, 3) X 1 0
Input buffer disabled (see Note 6) X X 1
P2.1/ 4
P2.1 (I/O) I: 0, O: 1 0 0
/
UCB1SIMO/UCB1SDA
UCB1SIMO/UCB1SDA (see Note 1, 2, 4) X 1 0
Input buffer disabled (see Note 6) X X 1
P2.2/ 4
P2.2 (I/O) I: 0, O: 1 0 0
/
UCB1SOMI/UCB1SCL
UCB1SOMI/UCB1SCL (see Note 1, 2, 4) X 1 0
Input buffer disabled (see Note 6) X X 1
P2.3/ 4
P2.3 (I/O) I: 0, O: 1 0 0
/
UCB1CLK/UCA1STE
UCB1CLK/UCA1STE (see Note 1, 2, 5) X 1 0
Input buffer disabled (see Note 6) X X 1
P2.4/ 4
P2.4 (I/O) I: 0, O: 1 0 0
/
UCA0TXD/UCA0SIMO
UCA0TXD/UCA0SIMO (see Note 1, 2) X 1 0
Input buffer disabled (see Note 6) X X 1
P2.5/ 5
P2.5 (I/O) I: 0, O: 1 0 0
/
UCA0RXD/UCA0SOMI
UCA0RXD/UCA0SOMI (see Note 1, 2) X 1 0
Input buffer disabled (see Note 6) X X 1
NOTES: 1. X: Don’t care
2. The pin direction is controlled by the USCI module.
3. UCA1CLK function takes precedence over UCB1STE function. If the pin is required as UCA1CLK input or output USCI_B1 will be
forced to 3-wire SPI mode even if 4-wire SPI mode is selected.
4. In case the I2C functionality is selected the output drives only the logical 0 to V
SS
level.
5. UCB1CLK function takes precedence over UCA1STE function. If the pin is required as UCB1CLK input or output USCI_A1 will be
forced to 3-wire SPI mode even if 4-wire SPI mode is selected.
6. Setting the CAPD.x bit disables the output driver as well as the input schmitt trigger to prevent parasitic cross currents when applying
analog signals.