E202075_HD404889 Datasheet, PDF (73/202 Pages) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip LCD Circuit

HD404889/HD404899/HD404878/HD404868 Series
Data control registers (DCD0–2 : $030–$032)
(DCR0–8 : $034–$03C)
Register Name
DCD0–DCD2
DCR0–DCR8
Bit
Read/Write
Reset
Bit name
Read/Write
Reset
Bit name
3
W
0
DCD03–DCD23
W
0
DCR03–DCR73
2
W
0
DCD02–DCD22
W
0
DCR02–DCR72
1
W
0
DCD01–DCD21
W
0
DCR01–DCR81
0
W
0
DCD00–DCD20
W
0
DCR00–DCR80
All bits
0
1
CMOS buffer control
CMOS buffer off (high impedance)
CMOS buffer active
Correspondence between each bit of DCD and DCR and ports
Register Name
DCD0
DCD1
DCD2
DCR0
DCR1
DCR2
DCR3
DCR4
DCR5
DCR6
DCR7
DCR8
Bit 3
D3
D7
D11*
R03*
R13
R23
R33
R43
R53
R63
R73
Bit 2
D2
D6
D10*
R02
R12
R22
R32
R42
R52
R62
R72
Bit 1
D1
D5
D9
R01
R11
R21
R31
R41
R51
R61
R71
R81*
Bit 0
D0
D4
D8
R00
R10
R20
R30
R40
R50
R60
R70
R80*
Note: * Applies to HD404889, HD404899, and HD404878 Series
Figure 27 Data Control Registers (DCD, DCR)
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