M306H7MG-XXXFP Datasheet, PDF (171/329 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER

M306H7MG-XXXFP/MC-XXXFP/FGFP
12. A/D CONVERTER
12.3 Single Sweep Mode
In this mode, the input voltages on selected pins are A/D converted, one pin at a time. Table 12.4 shows the
specifications of single sweep mode. Figure 12.6 shows the ADCON0 to ADCON1 registers in single sweep mode.
Table 12.4 Single Sweep Mode Specifications
Item
Specification
Function
The input voltages on pins selected by the ADCON1 register's SCAN1 to
SCAN0 bits are A/D converted, one pin at a time.
A/D conversion start condition • When the ADCON0 register's TRG bit is “0” (software trigger)
The ADCON0 register's ADST bit 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 stop condition • Completion of A/D conversion (If a software trigger is selected, the ADST bit
is cleared to “0” (A/D conversion halted).)
• Set the ADST bit to “0”
Interrupt request generation timing Completion of A/D conversion
Analog input pin
Select from AN0 to AN1 (2 pins), AN0 to AN3 (4 pins), AN0 to AN5 (6 pins), AN0
to AN7 (8 pins)
Reading of result of A/D converter Read one of the AD0 to AD7 registers that corresponds to the selected pin
Rev.2.10 Oct 25, 2006 Page 171 of 326
REJ03B0152-0210