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M16C/6N Group (M16C/6NK, M16C/6NM)
16.1 Mode Description
16.1.1 One-shot Mode
In one-shot mode, analog voltage applied to a selected pin is A/D converted once. Table 16.2 lists the
specifications of one-shot mode. Figure 16.4 shows the ADCON0 and ADCON1 registers in one-shot mode.
Table 16.2 One-shot Mode Specifications
Item
Function
A/D Conversion
Start Condition
A/D Conversion
Stop Condition
Interrupt Request
Generation Timing
Analog Input Pin
Reading of Result of
A/D Converter
Rev.2.00
Nov 28, 2005
REJ09B0124-0200
The CH2 to CH0 bits in the ADCON0 register, the ADGSEL1 to ADGSEL0
bits in the ADCON2 register and the OPA1 to OPA0 bits in the ADCON1
register select a pin Analog voltage applied to the pin is converted to a
digital code once.
• 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)
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Input on the ADTRG pin changes state from high to low after the ADST
bit is set to "1" (A/D conversion starts)
• Completion of A/D conversion (If a software trigger is selected, the ADST
bit is set to "0" (A/D conversion halted).)
• Set the ADST bit to "0"
Completion of A/D conversion
Select one pin from AN0 to AN7, AN0_0 to AN0_7, AN2_0 to AN2_7,
ANEX0 to ANEX1
Read one of the AD0 to AD7 registers that corresponds to the selected pin
page 206 of 378
Specification
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16. A/D Converter
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