MSP430FR6889 Datasheet, PDF (100/176 Pages) Texas Instruments – Mixed-Signal Microcontrollers

MSP430FR6889, MSP430FR68891, MSP430FR6888, MSP430FR6887
MSP430FR5889, MSP430FR58891, MSP430FR5888, MSP430FR5887
SLASE32A – AUGUST 2014 – REVISED MARCH 2015
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6.11.23.8 Port P4, P4.0 to P4.7, Input/Output With Schmitt Trigger
Pin Schematic: see Figure 6-1.
Table 6-23. Port P4 (P4.0 to P4.3) Pin Functions
PIN NAME (P4.x)
x
FUNCTION
P4.0/UCB1SIMO/UCB1SDA/MCLK/
Sz
0 P4.0 (I/O)
N/A
Internally tied to DVSS
UCB1SIMO/UCB1SDA
N/A
MCLK
Sz ⁽³⁾
CONTROL BITS AND SIGNALS ⁽¹⁾
P4DIR.x P4SEL1.x P4SEL0.x LCDSz
I: 0; O: 1
0
0
0
0
0
1
0
1
X ⁽²⁾
1
0
0
0
1
1
0
1
X
X
X
1
P4.1/UCB1SOMI/UCB1SCL/ACLK/
Sz
1 P4.1 (I/O)
N/A
Internally tied to DVSS
UCB1SOMI/UCB1SCL
N/A
ACLK
Sz ⁽³⁾
I: 0; O: 1
0
0
0
0
0
1
0
1
X ⁽²⁾
1
0
0
0
1
1
0
1
X
X
X
1
P4.2/UCA0SIMO/UCA0TXD/
UCB1CLK/Sz
2 P4.2 (I/O)
UCA0SIMO/UCA0TXD
UCB1CLK
N/A
Internally tied to DVSS
Sz ⁽³⁾
I: 0; O: 1
0
0
0
X ⁽⁴⁾
0
1
0
X ⁽²⁾
1
0
0
0
1
1
0
1
X
X
X
1
P4.3/UCA0SOMI/UCA0RXD/
UCB1STE/Sz
3 P4.3 (I/O)
UCA0SOMI/UCA0RXD
UCB1STE
I: 0; O: 1
0
0
0
X ⁽⁴⁾
0
1
0
X ⁽²⁾
1
0
0
N/A
Internally tied to DVSS
Sz ⁽³⁾
0
1
1
0
1
X
X
X
1
(1) X = Don't care
(2) Direction controlled by eUSCI_B1 module.
(3) The associated LCD segment is package dependent. See the Signal Descriptions tables and Pin Diagrams figures.
(4) Direction controlled by eUSCI_A0 module.
100 Detailed Description
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