MSP430F2002IPW datasheet(49/80 Pages) TI

49 / 80 page

MSP430x20x1, MSP430x20x2, MSP430x20x3

MIXED SIGNAL MICROCONTROLLER

SLAS491A − AUGUST 2005 − REVISED OCTOBER 2005

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

APPLICATION INFORMATION, MSP430x20x1

Port P1 (P1.0 to P1.3) pin functions, MSP430x20x1

PIN NAME (P1.X)

FUNCTION

CONTROL BITS / SIGNALS

PIN NAME (P1.X)

FUNCTION

P1DIR.x

P1SEL.x

CAPD.x

P1.0/TACLK/ACLK/

CA0

P1.0† Input/Output

0/1

P1.0/TACLK/ACLK/

CA0

Timer_A2.TACLK/INCLK

ACLK

CA0 (see Note 3)

P1.1/TA0/CA1

P1.1† Input/Output

0/1

P1.1/TA0/CA1

Timer_A2.CCI0A

Timer_A2.TA0

CA1 (see Note 3)

P1.2/TA1/CA2

P1.2† Input/Output

0/1

P1.2/TA1/CA2

Timer_A2.CCI1A

Timer_A2.TA1

CA2 (see Note 3)

P1.3/CAOUT/CA3

P1.3† Input/Output

0/1

P1.3/CAOUT/CA3

N/A

CAOUT

CA3 (see Note 3)

† Default after reset (PUC/POR)

NOTES:

1. N/A: Not available or not applicable.

2. X: Don’t care.

3. Setting the CAPD.x bit disables the output driver as well as the input schmitt trigger to prevent parasitic cross currents when applying

analog signals. Selecting the CAx input pin 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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