HD6433636SW datasheet(153/418 Pages) RENESAS

153 / 418 page

139

Port Data Register 5 (PDR5)

Bit

76543210

Initial value

00000000

Read/Write

R/W

PDR5 is an 8-bit register that stores data for port 5 pins P5

7 to P50. If port 5 is read while PCR5

bits are set to 1, the values stored in PDR5 are directly read, regardless of the actual pin states. If

port 5 is read while PCR5 bits are cleared to 0, the pin states are read.

Upon reset, PDR5 is initialized to H'00.

Port Control Register 5 (PCR5)

Bit

76543210

PCR5

Initial value

00000000

Read/Write

WWWWWWWW

PCR5 is an 8-bit register for controlling whether each of the port 5 pins P5

7 to P50 functions as an

input pin or output pin. Setting a PCR5 bit to 1 makes the corresponding pin an output pin, while

clearing the bit to 0 makes the pin an input pin. The settings in PCR5 and in PDR5 are valid only

when the corresponding pin is designated as a general I/O pin in PMR5.

Upon reset, PCR5 is initialized to H'00.

PCR5 is a write-only register. All bits are read as 1.

Port Pull-Up Control Register 5 (PUCR5)

Bit

76543210

PUCR5

Initial value

00000000

Read/Write

R/W

PUCR5 controls whether the MOS pull-up of each port 5 pin is on or off. When a PCR5 bit is

cleared to 0, setting the corresponding PUCR5 bit to 1 turns on the MOS pull-up for the

corresponding pin, while clearing the bit to 0 turns off the MOS pull-up.

Upon reset, PUCR5 is initialized to H'00.

HD6433636SW Folha de dados(PDF) 153 Page - Renesas Technology Corp