Datasheet

Input/Output Ports (I/O)
Port C
MC68HC908GR8 — Rev 4.0 Technical Data
MOTOROLA Input/Output Ports (I/O) 219
16.5.3 Port C Input Pullup Enable Register
The port C input pullup enable register (PTCPUE) contains a software
configurable pullup device for each of the two port C pins. Each bit is
individually configurable and requires that the data direction register,
DDRC, bit be configured as an input. Each pullup is automatically and
dynamically disabled when a port bit’s DDRC is configured for output
mode.
PTCPUE1–PTCPUE0 — Port C Input Pullup Enable Bits
These writeable bits are software programmable to enable pullup
devices on an input port bit.
1 = Corresponding port C pin configured to have internal pullup
0 = Corresponding port C pin internal pullup disconnected
Address: $000E
Bit 7654321Bit 0
Read: 0 0 0 0 0 0
PTCPUE1 PTCPUE0
Write:
Reset:00000000
= Unimplemented
Figure 16-12. Port C Input Pullup Enable Register (PTCPUE)
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