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M16C/6N Group (M16C/6NK, M16C/6NM)
16.1.5 Repeat Sweep Mode 1
In repeat sweep mode 1, analog voltage selectively applied to all pins is repeatedly converted to a digital code.
Table 16.6 lists the specifications of repeat sweep mode 1. Figure 16.8 shows the ADCON0 and
ADCON1 registers in repeat sweep mode 1.
Table 16.6 Repeat Sweep Mode 1 Specifications
Item
Function
A/D Conversion
Start Condition
A/D Conversion
Stop Condition
Interrupt Request
Generation Timing
Analog Input Pins to be Given Select from AN0 (1 pin), AN0 to AN1 (2 pins), AN0 to AN2 (3 pins),
Priority when A/D Converted AN0 to AN3 (4 pins)
Reading of Result of
A/D Converter
NOTE:
1. AN0_0 to AN0_7, and AN2_0 to AN2_7 can be used in the same way as AN0 to AN7.
Rev.2.00
Nov 28, 2005
REJ09B0124-0200
The input voltages on all pins selected by the ADGSEL1 to ADGSEL0 bits
in the ADCON2 register are A/D converted repeatedly, with priority given
to pins selected by the SCAN1 to SCAN0 bits in the ADCON1 register and
ADGSEL1 to ADGSEL0 bits.
Example : If AN0 selected, input voltages are A/D converted in order of
AN0
• When the TRG bit in the ADCON0 register is "0" (software trigger)
The ADST bit in the ADCON0 register is set to "1" (A/D conversion starts)
• When the TRG bit is "1" (ADTRG trigger)
_____________
Input on the ADTRG pin changes state from high to low after the ADST
bit is set to "1" (A/D conversion starts)
Set the ADST bit to "0" (A/D conversion halted)
None generated
Read one of the AD0 to AD7 registers that corresponds to the selected pin
page 214 of 378
Specification
AN1
AN0
AN2
_____________
(1)
16. A/D Converter
AN0
AN3, and so on.
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