Datasheet

CHAPTER 4 PORT FUNCTIONS
User’s Manual U18698EJ1V0UD
95
4.3 Registers Controlling Port Function
Port functions are controlled by the following seven types of registers.
• Port mode registers (PM1 to PM4, PM10 to PM12, PM14, PM15)
• Port registers (P1 to P4, P10 to P12, P14, P15)
• Pull-up resistor option registers (PU1, PU3, PU4, PU10 to PU12, PU14, PU15)
• Port function register 1 (PF1)
• Port function register 2 (PF2)
• Port function register ALL (PFALL)
• A/D port configuration register 0 (ADPC0)
Note
Note
μ PD78F041x only
(1) Port mode registers (PM1 to PM4, PM10 to PM12, PM14, PM15)
These registers specify input or output mode for the port in 1-bit units.
These registers can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets these registers to FFH.
When port pins are used as alternate-function pins, set the port mode register by referencing 4.5 Settings of
Port Mode Register and Output Latch When Using Alternate Function.