Table 6-47 Port P5 (P5.0 and P5.1) Pin Functions
PIN NAME (P5.x) |
x |
FUNCTION |
CONTROL BITS OR SIGNALS(3) |
P5DIR.x |
P5SEL.x |
P5.0/A8/VeREF+(1) |
0 |
P5.0 (I/O)(4) |
I: 0; O: 1 |
0 |
A8/VeREF+(5) |
X |
1 |
P5.1/A9/VeREF–(2) |
1 |
P5.1 (I/O)(4) |
I: 0; O: 1 |
0 |
A9/VeREF–(6) |
X |
1 |
(1) VeREF+ available on devices with ADC10_A.
(2) VeREF- available on devices with ADC10_A.
(3) X = Don't care
(4) Default condition
(5) 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 ADC10_A when available.
(6) 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 ADC10_A when available.