MSP430C33X_00 Datasheet, PDF (29/39 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLERS

MSP430C33x, MSP430P337A
MIXED SIGNAL MICROCONTROLLERS
typical input/output schematics (continued)
SLAS227A – OCTOBER 1999 – REVISED JUNE 2000
TXE
P0DIR.2
P0OUT.2
0
TXD
1
0: Input
1: Output
Pad Logic
VCC2
(see Note A)
(see Note B)
P0.2/TXD
(see Note B)
P0IN.2
(see Note A)
VSS3
Request
Interrupt
P0.27
P0IRQ.2
P0IRQ.3
P0IRQ.7
P0IE.2
Q Set
P0IFG.2
Interrupt
Flag
Interrupt
Edge
Select
P0IES.2
NOTES: A. Optional selection of pullup or pulldown resistors available on ROM (masked) versions.
B. Fuses for the optional pullup and pulldown resistors can only be programmed at the factory.
Figure 9. Port P0, P0.2, Input/Output With Schmitt-Trigger
P0DIR.3–7
P0OUT.3–7
0: Input
1: Output
Pad Logic
VCC2
(see Note A)
(see Note B)
P0.3–P0.7
(see Note B)
P0IN.3–7
(see Note A)
VSS3
Request
Interrupt
P0.27
P0IRQ.3–7
P0IRQ.2
P0IE.3–7
Q Set
P0IFG.3–7
Interrupt
Flag
Interrupt
Edge
Select
P0IES.3–7
NOTES: A. Optional selection of pullup or pulldown resistors available on ROM (masked) versions.
B. Fuses for the optional pullup and pulldown resistors can only be programmed at the factory.
Figure 10. Port P0, P0.3 to P0.7, Input/Output With Schmitt-Trigger
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