Datasheet

MSP430F47x3, MSP430F47x4
MIXED SIGNAL MICROCONTROLLER
SLAS545C − MAY 2007 − REVISED MARCH 2011
60
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
port P4, P4.0 to P4.1, input/output with Schmitt trigger
Bus
Keeper
EN
Direction
0: Input
1: Output
P4SEL.x
1
0
P4DIR.x
P4IN.x
D
EN
Module X IN
1
0
Module X OUT
P4OUT.x
P4.0/UCA1TXD/UCA1SIMO
P4.1/UCA1RXD/UCA1SOMI
1
0
DVSS
DVCC
P4REN.x
Pad Logic
1
USCI Direction
Control
DVSS
Port P4 (P4.0 to P4.1) pin functions
PIN NAME (P4 X)
X
FUNCTION
CONTROL BITS / SIGNALS
PIN NAME (P4.X)
X FUNCTION
P4DIR.x P4SEL.x
P4.0/ 0
P4.0 (I/O) I: 0, O: 1 0
UCA1TXD/UCA1SIMO
UCA1TXD/UCA1SIMO (see Notes 1, 2) X 1
P4.1/ 1
P4.1 (I/O) I: 0, O: 1 0
UCA1RXD/UCA1SOMI
UCA1RXD/UCA1SOMI (see Notes 1, 2) X 1
NOTES: 1. X: Don’t care.
2. The pin direction is controlled by the USCI module.