saf-xc878m-16ffi5v Infineon Technologies Corporation, saf-xc878m-16ffi5v Datasheet - Page 78

• Manufacturer Part Number: saf-xc878m-16ffi5v
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Infineon Technologies Corporation

Figure 18
Figure 18
Data Sheet
AltDataOut 3
AltDataOut 2
AltDataOut1
AltDataIn
Internal Bus
shows the structure of a bidirectional port pin.
General Structure of Bidirectional Port
Alternate Select Register 0
Alternate Select Register 1
Px_PUDSEL
Pull-up/Pull-down
Pull-up/Pull-down
Enable Register
Control Register
Control Register
Direction Register
Px_ALTSEL0
Px_ALTSEL1
Px_PUDEN
Data Register
Select Register
Drive Strength
Px_Data
Open Drain
Px_OD
Px_DS
Px_DIR
Out
In
11
10
01
00
71
Pull-up/Pull-down
Control Logic
0
1
OpenDrain/Output
Schmitt Trigger
Control Logic
Functional Description
Output
Driver
Driver
Input
Device
Pull
Pad
XC87xCLM
V1.5, 2011-03
Pin