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13 ports e, f – Renesas H8S/2111B User Manual

Page 170

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Rev. 1.00, 05/04, page 136 of 544

7.13

Ports E, F

Ports E and F are two sets of 8-bit I/O ports. Port F also functions as I/O pins for TMR_X*,
TMR_Y*, TMR_A, and TMR_B. Ports E and F have the following registers.

• Port E data direction register (PEDDR)
• Port E output data register (PEODR)
• Port E input data register (PEPIN)
• Port E Nch-OD control register (PENOCR)
• Port F data direction register (PFDDR)
• Port F output data register (PFODR)
• Port F input data register (PFPIN)
• Port F Nch-OD control register (PFNOCR)

Note: *

The program development tool (emulator) does not support this function.

7.13.1

Port E and Port F Data Direction Registers (PEDDR, PFDDR)

PEDDR and PFDDR select input or output for the pins of port E and port F on a bit-by-bit basis.

Bit Bit

Name

Initial
Value

R/W Description

7 PE7DDR

0

W

6 PE6DDR

0

W

5 PE5DDR

0

W

4 PE4DDR

0

W

3 PE3DDR

0

W

2 PE2DDR

0

W

1 PE1DDR

0

W

0 PE0DDR

0

W

0: Port E pin is an input pin

1: Port E pin is an output pin

PEDDR has the same address as PEPIN, and if read,
the port E pin states will be returned.

Bit Bit

Name

Initial
Value R/W

Description

7 PF7DDR

0

W

6 PF6DDR

0

W

5 PF5DDR

0

W

4 PF4DDR

0

W

3 PF3DDR

0

W

2 PF2DDR

0

W

1 PF1DDR

0

W

0 PF0DDR

0

W

0: Port F pin is an input pin

1: Port F pin is an output pin

PFDDR has the same address as PFPIN, and if read,
the port F pin states will be returned.

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