MSP430X241X Datasheet, PDF (83/98 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430x241x, MSP430x261x
MIXED SIGNAL MICROCONTROLLER
SLAS541A -- JUNE 2007 -- REVISED OCTOBER 2007
Port P5 pin schematic: P5.0 to P5.7, input/output with Schmitt trigger
P5REN.x
P5DIR.x
0
Module
Direction
1
Direction
0: Input
1: Output
DVSS 0
DVCC 1
Pad Logic
1
P5OUT.x
0
Module X OUT
1
P5SEL.x
P5IN.x
EN
Module X IN
D
P5.0/UCB1STE/UCA1CLK
P5.1/UCB1SIMO/UCB1SDA
P5.2/UCB1SOMI/UCB1SCL
P5.3/UCB1CLK/UCA1STE
P5.4/MCLK
P5.5/SMCLK
P5.6/ACLK
P5.7/TBOUTH/SVSOUT
Port P5.0 to P5.7 pin functions
PIN NAME (P5.X)
P5.0/UCB1STE/
UCA1CLK
P5.1/UCB1SIMO/
UCB1SDA
P5.2/UCB1SOMI/
UCB1SCL
P5.3/UCB1CLK/
UCA1STE
X
FUNCTION
0 P5.0 (I/O)
UCB1STE/UCA1CLK (see Note 2 and 4)
1 P5.1 (I/O)
UCB1SIMO/UCB1SDA (see Note 2 and 3)
2 P5.2 (I/O)
UCB1SOMI/UCB1SCL (see Note 2 and 3)
3 P5.3 (I/O)
UCB1CLK/UCA1STE (see Note 2)
CONTROL BITS / SIGNALS
P5DIR.x
P5SEL.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
P5.4/MCLK
4 P5.0 (I/O)
I: 0; O: 1
0
MCLK
1
1
P5.5/SMCLK
5 P5.1 (I/O)
I: 0; O: 1
0
SMCLK
1
1
P5.6/ACLK
6 P5.2 (I/O)
I: 0; O: 1
0
ACLK
1
1
P5.7/TBOUTH/
SVSOUT
7 P5.7 (I/O)
TBOUTH
I: 0; O: 1
0
0
1
SVSOUT
1
1
NOTES:
1. X: Don’t care
2. The pin direction is controlled by the USCI module.
3. In case the I2C functionality is selected the output drives only the logical 0 to V_SS level.
4. UCA1CLK function takes precedence over UCB1STE function. If the pin is required as UCA1CLK input or output USCI A1/B1 will
be forced to 3-wire SPI mode if 4-wire SPI mode is selected.
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83