MSP430xG461x
MIXED SIGNAL MICROCONTROLLER
SLAS508I − APRIL 2006 − REVISED MARCH 2011
74
POST OFFICE BOX 655303
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DALLAS, TEXAS 75265
Port P4 (P4.2 to P4.5) pin functions
PIN NAME (P4 X)
X
FUNCTION
CONTROL BITS / SIGNALS
PIN NAME (P4.X)
X
FUNCTION
P4DIR.x
P4SEL.x
LCDS36
P4.2/STE1/S39
2
P4.2 (I/O)
I: 0; O: 1
0
0
USART1.STE1
X
1
0
S39 (see Note 1)
X
X
1
P4.3/SIMO/S38
3
P4.3 (I/O)
I: 0; O: 1
0
0
USART1.SIMO1 (see Notes 1, 2)
X
1
0
S38 (see Note 1)
X
X
1
P4.4/SOMI/S37
4
P4.4 (I/O)
I: 0; O: 1
0
0
USART1.SOMI1 (see Notes 1, 2)
X
1
0
S37 (see Note 1)
X
X
1
P4.5/SOMI/S36
5
P4.5 (I/O)
I: 0; O: 1
0
0
USART1.UCLK1 (see Notes 1, 2)
X
1
0
S36 (see Note 1)
X
X
1
P4.6/UCA0TXD/S35
6
P4.6 (I/O)
I: 0; O: 1
0
0
USCI_A0.UCA0TXD (see Notes 1, 3)
X
1
0
S35 (see Note 1)
X
X
1
P4.7/UCA0RXD/S34
7
P4.7 (I/O)
I: 0; O: 1
0
0
USCI_A0.UCA0RXD (see Notes 1, 3)
X
1
0
S34 (see Note 1)
X
X
1
NOTES:
1. X: Don’t care
2. The pin direction is controlled by the USART1 module.
3. When in USCI mode, P4.6 is set to output, P4.7 is set to input.
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