Datasheet

P6IN.3

Module X IN

Pad Logic

P6OUT.x

P6DIR.3

P6SEL.3

SIFCAOUT

Bus Keeper

To/From Scan I/F

0: Input

1: Output

P6.3/SIFCH3/SIFCAOUT

P6SEL.x must be set if the corresponding pins are used by the Scan IF.

MSP430FW42x

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SLAS383D –OCTOBER 2003–REVISED JANUARY 2011

NOTE

The signal at pins P6.x/SIFCHx and P6.x/SIFCIx are shared by Port P6 and the Scan IF

module. P6SEL.x must be set if the corresponding pins are used by the Scan IF.

Port P6, P6.3 Input/Output With Schmitt Trigger

NOTE

Analog signals applied to digital gates can cause current flow from the positive to the

negative terminal. The throughput current flows if the analog signal is in the range of

transitions 0→1 or 1→0. The value of the throughput current depends on the driving

capability of the gate. For MSP430, it is approximately 100 µA.

Use P6SEL.x=1 to prevent throughput current. P6SEL.x should be set, if an analog signal

is applied to the pin.

P6SEL.3 P6DIR.3 Port Function

0 0 P6.3 Input

0 1 P6.3 Output

1 0 SIFCH3 (Scan IF channel 3 excitation output and comparator input)

1 1 SIFCAOUT (Comparator output)