Hitachi H8/3692 ユーザーズマニュアル

Rev. 1.0, 07/01, page 41 of 372

•

 

Prior to executing BCLR instruction

MOV.B   #3F,  R0L
MOV.B   R0L,  @RAM0
MOV.B   R0L,  @PCR5

The PCR5 value (H'3F) is written to a work area in
memory (RAM0) as well as to PCR5.

Input/output

Input

Input

Output

Output

Output

Output

Output

Output

Pin state

Low
level

High
level

Low
level

Low
level

Low
level

Low
level

Low
level

Low
level

PCR5

0

0

1

1

1

1

1

1

PDR5

1

0

0

0

0

0

0

0

RAM0

0

0

1

1

1

1

1

1

•

 

BCLR instruction executed

BCLR   #0,    @RAM0

The BCLR instructions executed for the PCR5 work area

(RAM0).

•

 

After executing BCLR instruction

MOV.B   @RAM0, R0L
MOV.B   R0L,  @PCR5

The work area (RAM0) value is written to PCR5.

Input/output

Input

Input

Output

Output

Output

Output

Output

Output

Pin state

Low
level

High
level

Low
level

Low
level

Low
level

Low
level

Low
level

High
level

PCR5

0

0

1

1

1

1

1

0

PDR5

1

0

0

0

0

0

0

0

RAM0

0

0

1

1

1

1

1

0