R01UH0136EJ0210 Rev.2.10
Page 637 of 800
Jul 31, 2012
M16C/64A Group
27. A/D Converter
Figure 27.12 Operation Example in Single Sweep Mode
Table 27.13
Registers and Settings in Single Sweep Mode
Register
Bit
Setting
PCR
PCR5
Set to 1 (
INT6
input disabled) when using the AN2_4 pin for
analog input.
PCR6
Set to 1 (
INT7
input disabled) when using the AN2_5 pin for
analog input.
PCR7
Set to 1 (key input disabled) when using pins AN4 to AN7 for
analog input.
AINRST
AINRST1,
AINRST0
Select whether open-circuit detection assist function is used or
not.
AD0 to AD7
b9 to b0
A/D conversion result can be read.
ADCON2
ADGSEL1,
ADGSEL0
Select analog input pin group.
CKS2
Select
φ
AD frequency.
ADCON0
CH2 to CH0
Disabled
MD1 to MD0
Set to 10b.
TRG
Select a trigger.
ADST
Set to 1 to start A/D conversion and set to 0 to stop it.
CKS0
Select
φ
AD frequency.
SCAN1, SCAN0
Select analog input pin.
MD2
Set to 0.
ADCON1
CKS1
Select
φ
AD frequency.
ADSTBY
Set to 1 when performing A/D conversion.
ADEX1, ADEX0
Set to 00b.
Note:
1.
This table does not describe a procedure.
A/D conversion start
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
Set to 0 by acceptance of an
interrupt request or by a program
IR bit in the
ADIC register
Single A/D conversion
Time
The above diagram applies under the following conditions:
•
Bits SCAN1 to SCAN0 in the ADCON1 register are 01b (AN0 to AN3 (4 pins)).
•
Bits ADGSEL1 to ADGSEL0 in the ADCON2 register are 00b (AN0 to AN7).
Содержание M16C/60 Series
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