MSP430F21X2_17 Datasheet, PDF (58/80 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F21x2
SLAS578J – NOVEMBER 2007 – REVISED JANUARY 2012
Port P2 Pin Schematic: P2.6, Input/Output With Schmitt Trigger
BCSCTL3.LFXT1Sx = 11
LFXT1 off
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P2.7/XOUT/CA7
0
LFXT1CLK
1
To Comparator
From
Comparator
P2SEL.7
Pad Logic
CAPD.6
P2REN.6
P2DIR.6
P2OUT.6
Module X OUT
P2SEL.6
P2IN.6
Module X IN
P2IRQ.6
0
Direction
1
0: Input
1: Output
0
1
EN
D
P2IE.6 _EN
Q
Set
P2IFG.6
P2SEL.6
P2IES.6
Interrupt
Edge Select
DVSS 0
DVCC 1
1
Bus
Keeper
EN
P2.6/XIN/CA6
Table 26. Port P2 (P2.6) Pin Functions
PIN NAME (P2.x)
P2.6/XIN/CA6
x
P2.6 (I/O)
6 XIN (default)
CA6 ⁽²⁾
FUNCTION
CONTROL BITS / SIGNALS⁽¹⁾
CAPD.6
P2DIR.6
P2SEL.6
P2SEL2.x = 0
0
I: 0; O: 1
0
X
1
1
1
X
0
(1) X = Don't care
(2) Setting the CAPD.x bit disables the output driver as well as the input to prevent parasitic cross currents when applying analog signals.
Selecting the CAx input to the comparator multiplexer with the P2CAx bits automatically disables the input buffer for that pin, regardless
of the state of the associated CAPD.x bit.
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