Datasheet

MSP430F42x
MIXED SIGNAL MICROCONTROLLER
SLAS421A − APRIL 2004 − REVISED JUNE 2007
35
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
input/output schematic (continued)
port P2, P2.2 to P2.5, input/output with Schmitt-trigger
DVSS
P2OUT.x
Module X OUT
P2DIR.x
Direction Control
From Module
P2SEL.x
D
EN
Interrupt
Edge
Select
P2IES.x P2SEL.x
P2IE.x
P2IFG.x
P2IRQ.x
EN
Set
Q
0
1
1
0
Pad Logic
0: Input
1: Output
Bus
keeper
CAPD.x
PnSEL.x PnDIR.x
Direction
From Module
PnOUT.x
Module X
OUT
PnIN.x
PnIE.x
PnIFG.x
PnIES.x
Module X IN
P2SEL.2 P2DIR.2 P2OUT.2 P2IN.2 P2IE.2 P2IFG.2 P2IES.2
P2SEL.3 P2DIR.3 P2OUT.3 P2IN.3 P2IE.3 P2IFG.3 P2IES.3
P2SEL.4 P2DIR.4
P2OUT.4 P2IN.4 P2IE.4 P2IFG.4 P2IES.4
P2SEL.5 P2DIR.5 P2OUT.5 P2IN.5 P2IE.5 P2IFG.5 P2IES.5
DVSS
DVSS
P2DIR.3
DVCC
DVSS DVSS
Module X IN
P2IN.x
P2.5/URXD0
P2.2/STE0
P2.4/UTXD0
P2.3/SVSIN
Control
NOTE: 2 ≤ x ≤ 5
Port function is active if CAPD.x = 0
†
USART0
UTXD0
†
STE0
†
unused
unused
URXD0
†
DVSS
DVSS
CAPD.x
To BrownOut/SVS for P2.3/SVSIN
DVSS
SVSCTL VLD
DVSS
DVSS
= 1111b