M306H7MG-XXXFP Datasheet, PDF (165/329 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER

M306H7MG-XXXFP/MC-XXXFP/FGFP
12. A/D CONVERTER
A/D control register 0 (Note)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
ADCON0
Address After reset
03D616 00000XXX2
Bit symbol
Bit name
Function
RW
CH0
Analog input pin select bit Function varies with each operation mode RW
CH1
RW
CH2
RW
MD0
A/D operation mode
select bit 0
b4 b3
0 0 : One-shot mode
0 1 : Repeat mode
RW
1 0 : Single sweep mode
MD1
1 1 : Repeat sweep mode 0 or
RW
Repeat sweep mode 1
TRG
Trigger select bit
0 : Software trigger
1 : ADTRG trigger
RW
ADST
A/D conversion start flag 0 : A/D conversion disabled
1 : A/D conversion started
RW
CKS0 _{Frequency select bit 0}
See Note 2 for the ADCON2 register
RW
Note: If the ADCON0 register is rewritten during A/D conversion, the conversion result will be indeterminate.
A/D control register 1 (Note 1)
b7 b6 b5 b4 b3 b2 b1 b0
0
Symbol
ADCON1
Address
03D716
After reset
0016
Bit symbol
Bit name
A/D sweep pin select bit
SCAN0
Function
RW
Function varies with each operation mode
RW
SCAN1
RW
MD2
A/D operation mode
select bit 1
0 : Any mode other than repeat sweep
mode 1
RW
1 : Repeat sweep mode 1
(b3)
Reserved bit
Must always be set to “0”
RW
CKS1 _{Frequency select bit 1}
See Note 2 for the ADCON2 register
RW
VCUT
OPA0
OPA1
Vref connect bit (Note 2)
External op-amp
connection mode bit
0 : Vref not connected
1 : Vref connected
RW
Function varies with each operation mode _RW
RW
Note 1: If the ADCON1 register is rewritten during A/D conversion, the conversion result will be indeterminate.
Note 2: If the VCUT bit is reset from “0” (Vref unconnected) to “1” (Vref connected), wait for 1 µs or more before starting
A/D conversion.
Figure 12.2 ADCON0 to ADCON1 Registers
Rev.2.10 Oct 25, 2006 Page 165 of 326
REJ03B0152-0210