M306H7MG-XXXFP Datasheet, PDF (169/329 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER

M306H7MG-XXXFP/MC-XXXFP/FGFP
12. A/D CONVERTER
12.2 Repeat mode
In this mode, the input voltage on one selected pin is A/D converted repeatedly. Table 12.3 shows the specifications
of repeat mode. Figure 12.5 shows the ADCON0 to ADCON1 registers in repeat mode.
Table 12.3 Repeat Mode Specifications
Item
Specification
Function
The input voltage on one pin selected by the ADCON0 register's CH2 to CH0
bits and the ADCON1 register's OPA1 to OPA0 bits is A/D converted
repeatedly.
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 Set the ADST bit to “0” (A/D conversion halted)
Interrupt request generation timing None generated
Analog input pin
Select one pin from AN0 to AN7, ANEX0 to ANEX1
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 169 of 326
REJ03B0152-0210