M16C62P_06 Datasheet, PDF (261/421 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

M16C/62P Group (M16C/62P, M16C/62PT)
18. A/D Converter
18.1.5 Repeat Sweep Mode 1
In repeat sweep mode 1, analog voltage selectively applied to all pins is repeatedly converted to a digital code.
Table 18.6 shows the Repeat Sweep Mode 1 Specifications. Figure 18.9 shows the ADCON0 Register and
ADCON1 Register (Repeat Sweep Mode 1).
Table 18.6 Repeat Sweep Mode 1 Specifications
Item
Function
Specification
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→AN1→AN0→AN2→AN0→AN3, and so on.
A/D Conversion Start
Condition
A/D Conversion Stop
Condition
Interrupt Request
Generation timing
Analog Input Pins to be
Given Priority when A/D
Converted
Reading of Result of A/D
Converter
• 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
Select from AN0 (1 pin), AN0 to AN1 (2 pins), AN0 to AN2 (3 pins),
AN0 to AN3 (4 pins) ⁽¹⁾
Read one of the AD0 to AD7 registers that corresponds to the selected pin
NOTES:
1. AN0_0 to AN0_7, and AN2_0 to AN2_7 can be used in the same way as AN0 to AN7. However, if
VCC2 < VCC1, do not use AN0_0 to AN0_7 and AN2_0 to AN2_7 as analog input pins.
Rev.2.41 Jan 10, 2006 Page 246 of 390
REJ09B0185-0241