Rev. 1.0, 03/01, page
38
of
280
Prior to executing BSET
MOV.B #80, R0L
MOV.B R0L, @RAM0
MOV.B R0L, @PDR5
The PDR5 value (H'80) is written to a work area in
memory (RAM0) as well as to PDR5.
P57
P56
P55
P54
P53
P52
P51
P50
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
1
0
0
0
0
0
0
0
BSET instruction executed
BSET #0, @RAM0
The BSET instruction is executed designating the PDR5
work area (RAM0).
After executing BSET
MOV.B @RAM0, R0L
MOV.B R0L, @PDR5
The work area (RAM0) value is written to PDR5.
P57
P56
P55
P54
P53
P52
P51
P50
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
1
PDR5
1
0
0
0
0
0
0
1
RAM0
1
0
0
0
0
0
0
1
Bit Manipulation in a Register Containing a Write-Only Bit
Example 3: BCLR instruction executed designating port 5 control register PCR5
P57 and P56 are input pins, with a low-level signal input at P57 and a high-level signal input at
P56. P55 to P50 are output pins that output low-level signals. An example of setting the P50 pin as
an input pin by the BCLR instruction is shown below. It is assumed that a high-level signal will be
input to this input pin.
Содержание H8/3670F-ZTAT HD64F3670
Страница 2: ...Rev 2 0 03 01 page ii of xxiv ...
Страница 4: ...Rev 2 0 03 01 page iv of xxiv ...
Страница 14: ...Rev 2 0 03 01 page xiv of xxiv ...
Страница 20: ...Rev 1 0 03 01 page xx of xxiv ...
Страница 24: ...Rev 1 0 03 01 page xxiv of xxiv ...
Страница 78: ...Rev 1 0 03 01 page 54 of 280 ...
Страница 112: ...Rev 1 0 03 01 page 88 of 280 ...
Страница 248: ...Rev 1 0 03 01 page 224 of 280 ...