MSP430X22X2 Datasheet, PDF (70/87 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430x22x2, MSP430x22x4
MIXED SIGNAL MICROCONTROLLER
SLAS504B − JULY 2006 − REVISED JULY 2007
Port P3 pin schematic: P3.6 to P3.7, input/output with Schmitt trigger
To ADC10
Pad Logic
INCHx = y
ADC10AE0.y
P3REN.x
P3DIR.x
0
DVSS 1
P3OUT.x
0
Module X OUT
1
P3SEL.x
P3IN.x
EN
Module X IN
D
Direction
0: Input
1: Output
DVSS 0
DVCC 1
1
Bus
Keeper
EN
P3.6/A6/OA0I2
P3.7/A7/OA1I2
+
OA0/1
−
Port P3 (P3.6, P3.7) pin functions
PIN NAME (P3.X) X Y
FUNCTION
CONTROL BITS / SIGNALS
P3DIR.x
P3SEL.x ADC10AE0.y
P3.6/A6/OA0I2
6 6 P3.6† (I/O)
I: 0; O: 1
0
0
A6/OA0I2 (see Note 5)
X
X
1
P3.7/A7/OA1I2
7 7 P3.7† (I/O)
I: 0; O: 1
0
0
A7/OA1I2 (see Note 5)
X
X
1
† _{Default after reset (PUC/POR)}
NOTES: 1. N/A: Not available or not applicable
2. X: Don’t care
3. The pin direction is controlled by the USCI module.
4. UC1CLK function takes precedence over UC0STE function. If the pin is required as UC1CLK input or output USCI0 will be forced
to 3-wire SPI mode if 4-wire SPI mode is selected.
5. 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.
70
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