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5 PERIPHERAL CIRCUITS AND THEIR OPERATION (Output Ports)
5.5.6 Control of output ports
Table 5.5.6.1 shows the output port control bits.
Address Bit
Name
00FF70 D7
HZR51
D6
HZR50
D5
HZR4H
D4
HZR4L
D3
HZR1H
D2
HZR1L
D1
HZR0H
D0
HZR0L
00FF71 D7
HZR27
D6
HZR26
D5
HZR25
D4
HZR24
D3
HZR23
D2
HZR22
D1
HZR21
D0
HZR20
00FF72
D7
HZR37
*2
D6
HZR36
D5
HZR35
D4
HZR34
D3
HZR33
D2
HZR32
D1
HZR31
D0
HZR30
00FF75 D7
R27D
D6
R26D
D5
R25D
D4
R24D
D3
R23D
D2
R22D
D1
R21D
D0
R20D
00FF76
D7
R37D
*2
D6
R36D
D5
R35D
D4
R34D
D3
R33D
D2
R32D
D1
R31D
D0
R30D
00FF78 D7
–
D6
–
D5
–
D4
–
D3
–
D2
–
D1
R51D
D0
R50D
*1 "0" when TOUT output is selected by mask option.
*2 These addresses are unavailable in the E0C88862.
42
Table 5.5.6.1(a) Output port control bits
Function
R51 high impedance control
R50 high impedance control
General-purpose register
General-purpose register
General-purpose register
General-purpose register
General-purpose register
General-purpose register
R27 high impedance control
R26 high impedance control
General-purpose register
General-purpose register
General-purpose register
General-purpose register
General-purpose register
General-purpose register
General-purpose register
General-purpose register
General-purpose register
R34 high impedance control
General-purpose register
General-purpose register
General-purpose register
General-purpose register
R27 output port data
R26 output port data
General-purpose register
General-purpose register
General-purpose register
General-purpose register
General-purpose register
General-purpose register
General-purpose register
General-purpose register
General-purpose register
R34 output port data
General-purpose register
General-purpose register
General-purpose register
General-purpose register
–
–
–
–
–
–
R51 output port data
R50 output port data
1
Hi-Z
Output
1
Hi-Z
Output
1
1
Hi-Z
Output
1
High
1
1
High
1
–
–
–
–
–
–
High
EPSON
0
SR R/W
Comment
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
Reserved register
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
Reserved register
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
Reserved register
0
R/W
0
R/W
0
R/W
0
R/W
0
Reserved register
0
R/W
0
R/W
1
R/W
Low
∗1
1
R/W
1
R/W
1
R/W
1
R/W
0
Reserved register
1
R/W
1
R/W
1
R/W
1
R/W
1
R/W
0
Reserved register
1
R/W
1
R/W
Low
1
R/W
1
R/W
0
Reserved register
1
R/W
1
R/W
–
–
–
–
–
–
Constantly "0" when
–
–
being read
–
–
–
–
1
R/W
Low
0
R/W
E0C88832/88862 TECHNICAL MANUAL
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