To Module
ADC10CLK
PxOUT.y
DV
SS
DV
CC
1
Bus
Keeper
EN
1
0
PxIN.y
EN
D
PxSEL.y
PxREN.y
1
0
PxIRQ.y
PxIE.y
EN
Set
Q
Interrupt
Edge
Select
PxSEL.y
PxIES.y
PxIFG.y
Direction
0: Input
1: Output
PxDIR.y
PxSEL.y
0
1
P1.3/ADC10CLK/A3/VREF-/VEREF-
INCHx = y
To ADC10
To ADC10 VREF-
1
0
VSS
SREF2
ADC10AE0.y
MSP430G2231-Q1
SLAS787B – NOVEMBER 2011 – REVISED MARCH 2014
www.ti.com
10.2 Port P1 Pin Schematic: P1.3, Input/Output With Schmitt Trigger
Table 14. Port P1 (P1.3) Pin Functions
CONTROL BITS OR SIGNALS
PIN NAME (P1.x)
x
FUNCTION
ADC10AE.x
P1DIR.x
P1SEL.x
(INCH.x = 1)
P1.3/
P1.x (I/O)
I: 0; O: 1
0
0
ADC10CLK/
ADC10CLK
1
1
0
A3/
3
A3
X
X
1 (y = 3)
VREF-/
VREF-
X
X
1
VEREF-
VEREF-
X
X
1
34
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