Datasheet

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  
SLAS361D − JANUARY 2002 − REVISED AUGUST 2004
33
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
input/output schematic (continued)
Port P2, P2.3 to P2.4, input/output with Schmitt-trigger
P2OUT.4
Module X Out
P2DIR.4
P2SEL.4
D
EN
Interrupt
Edge
Select
P2IES.4 P2SEL.4
P2IE.4
P2IFG.4
P2IRQ.07
EN
Set
Q
0
1
1
0
to ADC10, a4
P2.4/
Unused
P2IN.4
a4 Selected
Pad Logic
0: input
1: output
Bus
Keeper
ADC10AE.4
P2DIR.4
TA2/
A4/
V
REF+
P2OUT.3
Module X Out
P2DIR.3
P2SEL.3
D
EN
Interrupt
Edge
Select
P2IES.x P2SEL.x
P2IE.4
P2IFG.4
P2IRQ.07
EN
Set
Q
0
1
1
0
to ADC10, a3
P2.3/
Module X In
P2IN.4
a3 Selected
Pad Logic
0: input
1: output
Bus
Keeper
ADC10AE.3
P2DIR.3
TA1/
A3/
V
REF−
_
+
Reference Circuit
in ADC10 Module
ON ON
Typ.
1.25 V
a10 on REFON
REF_x
AV
CC
OUT
REF+
2_5 V
AV
CC
V +
R
AV
SS
V −
R
01
SREF
ADC10
CTL0.12..14)
SREF.2
ADC10
CTL0.14)
0,4
1,5
0
/V
eREF−
V
eREF+
/