MSP430F543XA_12 Datasheet, PDF (75/104 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F543xA, MSP430F541xA
www.ti.com
SLAS655B – JANUARY 2010 – REVISED OCTOBER 2010
PIN NAME (P5.x)
P5.0/A8/VREF+/VeREF+
P5.1/A9/VREF–/VeREF–
Table 49. Port P5 (P5.0 and P5.1) Pin Functions
x
0 P5.0 (I/O)⁽²⁾
A8/VeREF+ ⁽³⁾
A8/VREF+ ⁽⁴⁾
1 P5.1 (I/O)⁽²⁾
A9/VeREF– ⁽⁵⁾
A9/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. Channel A8, when selected
with the INCHx bits, is connected to the VREF+/VeREF+ pin.
(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. Channel A8, when selected with the INCHx bits, is connected to
the VREF+/VeREF+ 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. Channel A9, when selected
with the INCHx bits, is connected to the VREF-/VeREF- pin.
(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. Channel A9, when selected with the INCHx bits, is connected to
the VREF-/VeREF- pin.
Copyright © 2010, Texas Instruments Incorporated
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