MSP430F643 Datasheet, PDF (86/106 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F643x
SLAS720B – AUGUST 2010 – REVISED AUGUST 2012
Port P5, P5.0 and P5.1, Input/Output With Schmitt Trigger
To/From
Reference
Pad Logic
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P5REN.x
P5DIR.x
P5OUT.x
Module X OUT
P5SEL.x
P5IN.x
Module X IN
0
1
0
1
EN
D
DV_SS
0
DV_CC
1
1
P5DS.x
0: Low drive
1: High drive
Bus
Keeper
P5.0/VREF+/VeREF+
P5.1/VREF–/VeREF–
PIN NAME (P5.x)
P5.0/VREF+/VeREF+
P5.1/VREF–/VeREF–
Table 57. Port P5 (P5.0 and P5.1) Pin Functions
x
0 P5.0 (I/O)⁽²⁾
VeREF+ ⁽³⁾
VREF+ ⁽⁴⁾
1 P5.1 (I/O)⁽²⁾
VeREF– ⁽⁵⁾
VREF– ⁽⁶⁾
FUNCTION
CONTROL BITS/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 as well as 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 as well as 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 as well as 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 as well as 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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