MSP430F6638 Datasheet, PDF (95/126 Pages) Texas Instruments – Mixed-Signal Microcontrollers

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MSP430F6638, MSP430F6637, MSP430F6636, MSP430F6635
MSP430F6634, MSP430F6633, MSP430F6632, MSP430F6631, MSP430F6630
SLAS566E – JUNE 2010 – REVISED DECEMBER 2015
6.13.5 Port P5, P5.0 and P5.1, Input/Output With Schmitt Trigger
To/From
Reference
Pad Logic
P5REN.x
P5DIR.x
0
1
DV_SS
0
DV_CC
1
1
P5OUT.x
Module X OUT
P5SEL.x
P5IN.x
Module X IN
0
1
EN
D
P5DS.x
0: Low drive
1: High drive
Bus
Keeper
P5.0/VREF+/VeREF+
P5.1/VREF–/VeREF–
Figure 6-6. Port P5 (P5.0 and P5.1) Schematic
Table 6-56. Port P5 (P5.0 and P5.1) Pin Functions
PIN NAME (P5.x)
P5.0/VREF+/VeREF+
P5.1/VREF-/VeREF-
x
0 P5.0 (I/O)⁽²⁾
VeREF+ ⁽³⁾
VREF+ ⁽⁴⁾
1 P5.1 (I/O)⁽²⁾
VeREF- ⁽⁵⁾
VREF- ⁽⁶⁾
FUNCTION
CONTROL BITS OR SIGNALS⁽¹⁾
P5DIR.x
P5SEL.x
REFOUT
I: 0; O: 1
0
X
X
1
0
X
1
1
I: 0; O: 1
0
X
X
1
0
X
1
1
(1) X = Don't care
(2) Default condition
(3) Setting the P5SEL.0 bit disables the output driver and the input Schmitt trigger to prevent parasitic cross currents when applying analog
signals. An external voltage can be applied to VeREF+ and used as the reference for the ADC12_A, Comparator_B, or DAC12_A.
(4) Setting the P5SEL.0 bit disables the output driver and the input Schmitt trigger to prevent parasitic cross currents when applying analog
signals. The ADC12_A, VREF+ reference is available at the pin.
(5) Setting the P5SEL.1 bit disables the output driver and the input Schmitt trigger to prevent parasitic cross currents when applying analog
signals. An external voltage can be applied to VeREF- and used as the reference for the ADC12_A, Comparator_B, or DAC12_A.
(6) Setting the P5SEL.1 bit disables the output driver and the input Schmitt trigger to prevent parasitic cross currents when applying analog
signals. The ADC12_A, VREF- reference is available at the pin.
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Detailed Description
95
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MSP430F6632 MSP430F6631 MSP430F6630