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HD64F36022 Datasheet(PDF) 67 Page - Renesas Technology Corp

Part # HD64F36022
Description  Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
PDF  384 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD64F36022 Datasheet(HTML) 67 Page - Renesas Technology Corp

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Section 2 CPU
Rev. 4.00 Sep. 23, 2005 Page 41 of 354
REJ09B0025-0400
As a result of the BSET instruction, bit 0 in PDR5 becomes 1, and P50 outputs a high-level
signal. However, bits 7 and 6 of PDR5 end up with different values. To prevent this problem,
store a copy of the PDR5 data in a work area in memory. Perform the bit manipulation on the
data in the work area, then write this data to PDR5.
• 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



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