Datasheet

Section 8 I/O Ports

Rev. 2.00 Aug. 20, 2008 Page 223 of 1198

REJ09B0403-0200

(3) Port 6 Pull-Up MOS Control Register (P6PCR)

P6PCR controls the port 6 built-in input pull-up MOSs.

Bit Bit Name Initial Value R/W Description

7 P67PCR 0 R/W

6 P66PCR 0 R/W

5 P65PCR 0 R/W

4 P64PCR 0 R/W

3 P23PCR 0 R/W

2 P62PCR 0 R/W

1 P61PCR 0 R/W

0 P60PCR 0 R/W

• Normal extended mode (16-bit bus)

This register has no effect on operation.

• Other modes

When the pins are in the input state, the

corresponding input pull-up MOS is turned on

when a P6PCR bit is set to 1.

(4) Pin Functions

(a) Normal Extended Mode

• 16-bit bus mode

Port pins 63 to 60 are automatically set to function as bidirectional data bus pins.

• 8-bit bus mode

The operation is the same as that in single-chip mode.

(b) Address-Data Multiplex Extended Mode

The operation is the same as that in single-chip mode.

Port 6 pins can operate as the PWMX output, SCIF and SSU control input/output, interrupt input,

or general I/O port pins. The relationship between register setting values and pin functions are as

follows.