MSP430x11x

MIXED SIGNAL MICROCONTROLLERS

SLAS196D− DECEMBER 1998 − REVISED SEPTEMBER 2004

23

POST OFFICE BOX 655303

APPLICATION INFORMATION

input/output schematic (continued)

Port P2, P2.0 to P2.4, input/output with Schmitt-trigger

EN

D

See Note 1

See Note 2

See Note 2

See Note 1

GND

VCC

P2.0 − P2.4

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

Pad Logic

NOTE: x = Bit Identifier, 0 to 4 For Port P2

0: Input

1: Output

PnSel.x

PnDIR.x

Dir. Control

from module

PnOUT.x

Module X

OUT

PnIN.x

Module X

IN

PnIE.x

PnIFG.x

PnIES.x

P2Sel.0

P2DIR.0

P2DIR.0

P2OUT.0

ACLK

P2IN.0

unused

P2IE.0

P2IFG.0

P1IES.0

P2Sel.1

P2DIR.1

P2DIR.1

P2OUT.1

VSS

P2IN.1

INCLK†

P2IE.1

P2IFG.1

P1IES.1

P2Sel.2

P2DIR.2

P2DIR.2

P2OUT.2

Out0 signal†

P2IN.2

CCI0B†

P2IE.2

P2IFG.2

P1IES.2

P2Sel.3

P2DIR.3

P2DIR.3

P2OUT.3

Out1 signal†

P2IN.3

CCI1B†

P2IE.3

P2IFG.3

P1IES.3

P2Sel.4

P2DIR.4

P2DIR.4

P2OUT.4

Out2 signal†

P2IN.4

unused

P2IE.4

P2IFG.4

P1IES.4

† Signal from or to Timer_A

NOTES:

1. Optional selection of pullup or pulldown resistors with ROM (masked) versions.

2. Fuses for optional pullup and pulldown resistors can only be programmed at the factory.