MSP430X22X2 Datasheet, PDF (64/87 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430x22x2, MSP430x22x4
MIXED SIGNAL MICROCONTROLLER
SLAS504B − JULY 2006 − REVISED JULY 2007
Port P2 pin schematic: P2.4, input/output with Schmitt trigger
To/from ADC10
positive reference
To ADC10
INCHx = 4
ADC10AE0.4
P2REN.4
Pad Logic
P2DIR.4
0
1
P2OUT.4
0
Module X OUT 1
P2SEL.4
P2IN.4
EN
Module X IN
D
Direction
0: Input
1: Output
DVSS 0
DVCC 1
1
Bus
Keeper
EN
P2IRQ.4
P2IE.4
P2IFG.4
EN
Q
Set
P2SEL.4
P2IES.4
Interrupt
Edge
Select
+
OA1
−
P2.4/TA2/
A4/VREF+/VeREF+/
OA1I0
Port P2 (P2.4) pin functions
PIN NAME (P2.X) X Y
FUNCTION
CONTROL BITS / SIGNALS
P2DIR.x
P2SEL.x ADC10AE0.y
P2.4/TA2/
4 4 P2.4† (I/O)
I: 0; O: 1
0
0
A4/V_REF+/V_eREF+/
OA1I0
Timer_A3.TA2
A4/V_REF+/V_eREF+/OA1I0 (see Note 3)
1
1
0
X
X
1
† _{Default after reset (PUC/POR)}
NOTES: 1. N/A: Not available or not applicable
2. X: Don’t care
3. Setting the ADC10AE0.y bit disables the output driver as well as the input schmitt trigger to prevent parasitic cross currents when
applying analog signals.
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