H838024 datasheet(262/697 Pages) RENESAS

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Section 8 I/O Ports

Rev. 7.00 Mar 10, 2005 page 220 of 652

REJ09B0042-0700

Port Pull-Up Control Register 6 (PUCR6)

Bit

Initial value

Read/Write

PUCR6

R/W

PUCR6

R/W

PUCR6

R/W

PUCR6

R/W

PUCR6

R/W

PUCR6

R/W

PUCR6

R/W

PUCR6

R/W

PUCR6 controls whether the MOS pull-up of each of the port 6 pins P67 to P60 is on or off. When

a PCR6 bit is cleared to 0, setting the corresponding PUCR6 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, PUCR6 is initialized to H'00.

8.6.3

Pin Functions

Table 8.15 shows the port 6 pin functions.

Table 8.15

Port 6 Pin Functions

Pin Functions and Selection Method

P67/SEG16 to

P60/SEG9

The pin function depends on bits PCR67 to PCR60 in PCR6 and bits SGS3 to

SGS0 in LPCR.

P67 to P64

(n = 7 to 4)

SGS3 to SGS0

Other than 0100, 0101, 0110, 0111,

1000, 1001, 1010, 1011

0100, 0101, 0110,

0111, 1000, 1001,

1010, 1011

PCR6n

Pin function

P6n input pin

P6n output pin

SEGn+9 output pin

P63 to P60

(m = 3 to 0)

SGS3 to SGS0

Other than 0011, 0100, 0101, 0110,

0111, 1000, 1001, 1010

0011, 0100, 0101,

0110, 0111, 1000,

1001, 1010

PCR6m

Pin function

P6m input pin

P6m output pin

SEGm+9 output pin

*: Don’t care

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