Datasheet

MSP430F20x3
MSP430F20x2
MSP430F20x1
SLAS491I –AUGUST 2005–REVISED DECEMBER 2012 www.ti.com
Table 28. Port P1 (P1.0 to P1.3) Pin Functions, MSP430F20x3
CONTROL BITS / SIGNALS
(1)(2)
PIN NAME (P1.x) x FUNCTION
P1DIR.x P1SEL.x SD16AE.x INCHx
P1.0
(3)
input/output 0/1 0 0 N/A
Timer_A2.TACLK/INCLK 0 1 0 N/A
P1.0/TACLK/ACLK/A0+ 0
ACLK 1 1 0 N/A
A0+
(4)
X X 1 0
P1.1
(3)
input/output 0/1 0 0 N/A
Timer_A2.CCI0A 0 1 0 N/A
P1.1/TA0/A0-/A4+ 1 Timer_A2.TA0 1 1 0 N/A
A0-
(4)(5)
X X 1 0
A4+
(4)
X X 1 4
P1.2
(3)
input/output 0/1 0 0 N/A
Timer_A2.CCI1A 0 1 0 N/A
P1.2/TA1/A1+/A4- 2 Timer_A2.TA1 1 1 0 N/A
A1+
(4)
X X 1 1
A4-
(4)(5)
X X 1 4
P1.3
(3)
input/output 0/1 0 0 N/A
P1.3/VREF/A1- 3 VREF X 1 0 N/A
A1-
(4)(5)
X X 1 1
(1) X = Don't care
(2) N/A = Not available or not applicable
(3) Default after reset (PUC/POR)
(4) Setting the SD16AE.x bit disables the output driver and the input Schmitt trigger to prevent parasitic cross currents when applying
analog signals.
(5) With SD16AE.x = 0 the negative inputs are connected to VSS if the corresponding input is selected.
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