MSP430F149IPM datasheet(51/59 Pages) TI

51 / 59 page

MSP430x13x, MSP430x14x, MSP430x14x1

MIXED SIGNAL MICROCONTROLLER

SLAS272F − JULY 2000 − REVISED JUNE 2004

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

APPLICATION INFORMATION

input/output schematic (continued)

port P6, P6.0 to P6.7, input/output with Schmitt-trigger

P6.0 .. P6.7

P6IN.x

Module X IN

Pad Logic

P6OUT.x

P6DIR.x

P6SEL.x

Module X OUT

Direction Control

From Module

Bus Keeper

To ADC

From ADC

0: Input

1: Output

x: Bit Identifier, 0 to 7 for Port P6

Note: Not implemented in the MSP430x14x1 devices

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, even if the signal at the pin is not being used by the ADC12.

PnSel.x

PnDIR.x

DIR. CONTROL

FROM MODULE

PnOUT.x

MODULE X OUT

PnIN.x

MODULE X IN

P6Sel.0

P6DIR.0

P6OUT.0

DVSS

P6IN.0

unused

P6Sel.1

P6DIR.1

P6OUT.1

DVSS

P6IN.1

unused

P6Sel.2

P6DIR.2

P6OUT.2

DVSS

P6IN.2

unused

P6Sel.3

P6DIR.3

P6OUT.3

DVSS

P6IN.3

unused

P6Sel.4

P6DIR.4

P6OUT.4

DVSS

P6IN.4

unused

P6Sel.5

P6DIR.5

P6OUT.5

DVSS

P6IN.5

unused

P6Sel.6

P6DIR.6

P6OUT.6

DVSS

P6IN.6

unused

P6Sel.7

P6DIR.7

P6OUT.7

DVSS

P6IN.7

unused

NOTE: The signal at pins P6.x/Ax is used by the 12-bit ADC module.

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