MSP430F5438A Datasheet, PDF (87/106 Pages) Texas Instruments – Mixed Signal Microcontroller

MSP430F5438A, MSP430F5437A, MSP430F5436A, MSP430F5435A
MSP430F5419A, MSP430F5418A
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Port P9, P9.0 to P9.7, Input/Output With Schmitt Trigger
SLAS655D – JANUARY 2010 – REVISED AUGUST 2013
P9REN.x
Pad Logic
P9DIR.x
P9OUT.x
Module X OUT
P9SEL.x
P9IN.x
Module X IN
0
1
0
1
EN
D
Direction
0: Input
1: Output
DV_SS
0
DV_CC
1
1
P9DS.x
0: Low drive
1: High drive
P9.0/UCB2STE/UCA2CLK
P9.1/UCB2SIMO/UCB2SDA
P9.2/UCB2SOMI/UCB2SCL
P9.3/UCB2CLK/UCA2STE
P9.4/UCA2TXD/UCA2SIMO
P9.5/UCA2RXD/UCA2SOMI
P9.6
P9.7
Table 56. Port P9 (P9.0 to P9.7) Pin Functions
PIN NAME (P9.x)
x
FUNCTION
P9.0/UCB2STE/UCA2CLK
P9.1/UCB2SIMO/UCB2SDA
P9.2/UCB2SOMI/UCB2SCL
P9.3/UCB2CLK/UCA2STE
P9.4/UCA2TXD/UCA2SIMO
P9.5/UCA2RXD/UCA2SOMI
P9.6
P9.7
0 P9.0 (I/O)
UCB2STE/UCA2CLK^{(2) (3)}
1 P9.1 (I/O)
UCB2SIMO/UCB2SDA^{(2) (4)}
2 P9.2 (I/O)
UCB2SOMI/UCB2SCL ^{(2) (4)}
3 P9.3 (I/O)
UCB2CLK/UCA2STE^{(2) (5)}
4 P9.4 (I/O)
UCA2TXD/UCA2SIMO ⁽²⁾
5 P9.5 (I/O)
UCA2RXD/UCA2SOMI ⁽²⁾
6 P9.6 (I/O)
7 P9.7 (I/O)
CONTROL BITS/SIGNALS⁽¹⁾
P9DIR.x
P9SEL.x
I: 0; O: 1
0
X
1
I: 0; O: 1
0
X
1
I: 0; O: 1
0
X
1
I: 0; O: 1
0
X
1
I: 0; O: 1
0
X
1
I: 0; O: 1
0
X
1
I: 0; O: 1
0
I: 0; O: 1
0
(1) X = Don't care
(2) The pin direction is controlled by the USCI module.
(3) UCA2CLK function takes precedence over UCB2STE function. If the pin is required as UCA2CLK input or output, USCI_B2 is forced to
3-wire SPI mode if 4-wire SPI mode is selected.
(4) If the I2C functionality is selected, the output drives only the logical 0 to V_SS level.
(5) UCB2CLK function takes precedence over UCA2STE function. If the pin is required as UCB2CLK input or output, USCI A2 is forced to
3-wire SPI mode if 4-wire SPI mode is selected.
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MSP430F5418A