M3727GM6 Datasheet, PDF (46/129 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

M3727GM6/M8–XXXSP/FP M37272E8SP/FP
A-D Control Register 1
b7 b6 b5 b4 b3 b2 b1 b0
A-D control register 1 (AD1) [Address 00EC16]
B
Name
0 Analog input pin selection
to bits
2 (ADC10 to ADC12)
Functions
b2 b1 b0
0 0 0 : AD1
0 0 1 : AD2
0 1 0 : AD3
0 1 1 : AD4
1 0 0 : AD5
1 0 1 : AD6
1 1 0:
1 1 1:
Do not set.
After reset R W
0 _RW
3 This bit is a write disable bit.
When this bit is read out, the value is “0.”
0 _R—
4 Storage bit of comparison
result (ADC14)
0: Input voltage < reference voltage
1: Input voltage > reference voltage
Indeterminate _{R W}
5 _{Nothing is assigned. This bits are write disable bits.}
to _{When these bits are read out, the values are “0.”}
7
0 _R—
Fig. 8.8.2 A-D Control Register 1
A-D Control Register 2
b7 b6 b5 b4 b3 b2 b1 b0
A-D control register 2 (AD2) [Address 00ED 16]
B
Name
0 D-A converter set bits
to (ADC20 to ADC25)
5
Functions
b5 b4 b3 b2 b1 b0
0 0 0 0 0 0 : 1/128Vcc
0 0 0 0 0 1 : 3/128Vcc
0 0 0 0 1 0 : 5/128Vcc
After reset R W
0
RW
1 1 1 1 0 1 : 123/128Vcc
1 1 1 1 1 0 : 125/128Vcc
1 1 1 1 1 1 : 127/128Vcc
6, 7 Nothing is assigned. These bits are write disable bits.
When these bits are reed out, the values are “ 0.”
0
R—
Fig. 8.8.3 A-D Control Register 2
Rev.1.00 Apr 01, 2001 page 46 of 127
REJ03B0132-0100Z