MSP430x11x

MIXED SIGNAL MICROCONTROLLERS

SLAS196D− DECEMBER 1998 − REVISED SEPTEMBER 2004

25

POST OFFICE BOX 655303

APPLICATION INFORMATION

input/output schematic (continued)

Port P2, un-bonded bits P2.6 and P2.7

EN

D

0

1

0

1

Interrupt

Edge

Select

EN

Set

Q

P2IE.x

P2IFG.x

P2IRQ.x

Interrupt

Flag

P2IES.x

P2SEL.x

Module X IN

P2IN.x

P2OUT.x

Module X OUT

Direction Control

From Module

P2DIR.x

P2SEL.x

Bus Keeper

0

1

0: Input

1: Output

Node Is Reset With PUC

PUC

NOTE: x = Bit identifier, 6 to 7 for Port P2 without external pins

P2Sel.x

P2DIR.x

Dir. Control

from module

P2OUT.x

Module X

OUT

P2IN.x

Module X

IN

P2IE.x

P2IFG.x

P2IES.x

P2Sel.6

P2DIR.6

P2DIR.6

P2OUT.6

VSS

P2IN.6

unused

P2IE.6

P2IFG.6

P2IES.6

P2Sel.7

P2DIR.7

P2DIR.7

P2OUT.7

VSS

P2IN.7

unused

P2IE.7

P2IFG.7

P2IES.7

NOTE: A good use of the unbonded bits 6 and 7 of port P2 is to use the interrupt flags. The interrupt flags can not be influenced from any signal

other than from software. They work then as soft interrupt.