CHAPTER 4 PORT FUNCTIONS
Preliminary User’s Manual U16315EJ1V0UD
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4.2 Port Configuration
Ports consist of the following hardware.
Table 4-2. Port Configuration
Item
Configuration
Control registers
Port mode register (PM0, PM1, PM3, PM6, PM7, PM12, PM14)
Pull-up resistor option register (PU0, PU1, PU3, PU7, PU12, PU14)
Input switch control register (ISC)
Port
Total: 39 (CMOS I/O: 26, CMOS input: 8, CMOS output: 1, N-ch open drain I/O: 4)
Pull-up resistor
•
Mask ROM version
Total: 30 (software control: 26, mask option specification: 4)
•
Flash memory version: Total: 26