7220 Datasheet, PDF (257/303 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

APPENDIX
6.7 Control registers
DA n Conversion Register
b7 b6 b5 b4 b3 b2 b1 b0
0
DA n conversion register (DAn) (n = 1 and 2) [Address 00DE16, 00DF16]
B
Name
0 DA conversion set
to bits
5 (DAn0–DAn5)
Functions
b5 b4 b3 b2 b1 b0
0 0 0 0 0 0 : 0/64Vcc
0 0 0 0 0 1 : 1/64Vcc
0 0 0 0 1 0 : 2/64Vcc
After reset R W
Indeterminate R W
6 Fix this bit to “0.”
1 1 1 1 0 1 : 61/64Vcc
1 1 1 1 1 0 : 62/64Vcc
1 1 1 1 1 1 : 63/64Vcc
7 ^{Nothing is assigned. This bit is a write disable bit.}
When this bit is read out, the value is “ 0.”
0
R—
0
R—
Fig. 6.7.13 DA n conversion register (only M37220M3-XXXSP/FP)
Addresses 00DE16, 00DF16
Horizontal Position Register
b7 b6 b5 b4 b3 b2 b1 b0
Horizontal position register (HR) [Address 00E016]
B
Name
Functions
0 Horizontal display start
to
5
positions (HR0 to HR5)
64 steps (0016 to 3F16)
6, 7 Nothing is assigned. These bits are write disable bits.
When thses bits are read out, the values are “0.”
After reset R W
0 RW
0 R—
Fig. 6.7.14 Horizontal position register
Address 00E016
6-38
7220 Group User’s Manual