7220 Datasheet, PDF (156/303 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

M37220M3-XXXSP/FP
4.5 Functional description
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. 4.5.8 DA n conversion register (addresses 00DE16 and 00DF16)
Port P3 Output Mode Control Register
b7 b6 b5 b4 b3 b2 b1 b0
Port P3 output mode control register (P3S) [address 00CD16]
B
Name
0 P30 output structure
selection bit (P30S)
Functions
After reset ^R W
0 : CMOS output
0 RW
1 : N-channel open-drain output
1 P31 output structure
selection bit (P31S)
0 : CMOS output
0 RW
1 : N-channel open-drain output
2 DA1 output enable bit
(DA1S)
0 : P30 input/output
1 : DA1 output
0 RW
3 DA2 output enable bit
(DA2S)
0 : P31 input/output
1 : DA2 output
0 RW
4 Nothing is assigned. These bits are write disable bits.
to
7
When these bits are read out, the values are “0.”
0 R—
Fig. 4.5.9 Port P3 output mode control register (address 00CD16)
4-18
7220 Group User’s Manual