M16C6NK Datasheet, PDF (226/404 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

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M16C/6N Group (M16C/6NK, M16C/6NM)
16. A/D Converter
16.1.2 Repeat Mode
In repeat mode, analog voltage applied to a selected pin is repeatedly converted to a digital code.
Table 16.3 lists the specifications of repeat mode. Figure 16.5 shows the ADCON0 and ADCON1 registers
in repeat mode.
Table 16.3 Repeat Mode Specifications
Item
Specification
Function
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 this pin is repeatedly
converted to a digital code.
A/D Conversion
• When the TRG bit in the ADCON0 register is “0” (software trigger)
Start Condition
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)
A/D Conversion
Set the ADST bit to “0” (A/D conversion halted)
Stop Condition
Interrupt Request
None generated
Generation Timing
Analog Input Pin
Select one pin from AN0 to AN7, AN0_0 to AN0_7, AN2_0 to AN2_7,
ANEX0 to ANEX1
Reading of Result of
Read one of the AD0 to AD7 registers that corresponds to the selected pin
A/D Converter
Rev.2.00 Nov 28, 2005 page 208 of 378
REJ09B0124-0200