MSP430G2X21 Datasheet, PDF (43/61 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430G2x21, MSP430G2x31
MIXED SIGNAL MICROCONTROLLER
SLAS694B -- FEBRUARY 2010 -- REVISED MAY 2010
Port P1 pin schematic: P1.3, input/output with Schmitt trigger -- MSP430G2x31
SREF2
To ADC10 VREF-
0 ^VSS
1
To ADC10
INCHx = y
ADC10AE0.y
PxDIR.y
PxREN.y
PxSEL.y
1
Direction
0
0: Input
1: Output
PxOUT.y
ACLK
PxSEL.y
0
1
PxIN.y
DV_SS
0
DV_CC
1
1
Bus
Keeper
EN
P1.3/ADC10CLK/A3/VREF-/VEREF-
To Module
PxIRQ.y
PxSEL.y
PxIES.y
PxIE.y
EN
Q
Set
PxIFG.y
Interrupt
Edge
Select
Port P1 (P1.3) pin functions -- MSP430G2x31
PIN NAME (P1.X) X
FUNCTION
P1.3/
ADC10CLK/
A3
VREF--/
VEREF--
CA3
3 P1.x (I/O)
ADC10CLK
A3
VREF--
VEREF--
CA3
P1DIR.x
I: 0; O: 1
1
x
x
x
x
CONTROL BITS / SIGNALS
P1SEL.x
ADC10AE.x
(INCH.x = 1)
0
0
1
0
x
1 (y = 3)
x
1
x
1
x
0
CAPD.y
0
0
0
0
0
1 (y = 3)
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