Port Configuration - NEC 78K0/KD1 Series User Manual

4.2 Port Configuration

Ports consist of the following hardware.
Item
Control registers
Port
Pull-up resistor
80
CHAPTER 4 PORT FUNCTIONS
Table 4-2. Port Configuration
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)
Total: 39 (CMOS I/O: 26, CMOS input: 8, CMOS output: 1, N-ch open drain I/O: 4)
• Mask ROM version
Total: 30 (software control: 26, mask option specification: 4)
• Flash memory version: Total: 26
Preliminary User's Manual U16315EJ1V0UD
Configuration