HD6433644R datasheet(207/549 Pages) RENESAS

207 / 549 page

Section 8 I/O Ports

Rev. 6.00 Sep 12, 2006 page 187 of 526

REJ09B0326-0600

Port Data Register 5 (PDR5)

Bit

P57

P56

P55

P54

P53

P52

P51

P50

Initial value

Read/Write

R/W

PDR5 is an 8-bit register that stores data for port 5 pins P57 to P50. If port 5 is read while PCR5

bits are set to 1, the values stored in PDR5 are 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

PCR57

PCR56

PCR55

PCR54

PCR53

PCR52

PCR51

PCR50

Initial value

Read/Write

PCR5 is an 8-bit register for controlling whether each of the port 5 pins P57 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.

Upon reset, PCR5 is initialized to H'00.

PCR5 is a write-only register, which is always read as all 1s.

Port Pull-Up Control Register 5 (PUCR5)

Bit

PUCR57 PUCR56 PUCR55 PUCR54 PUCR53 PUCR52 PUCR51 PUCR50

Initial value

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.

HD6433644R Datasheet(PDF) 207 Page - Renesas Technology Corp

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