M306H7MG-XXXFP Datasheet, PDF (175/329 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER

M306H7MG-XXXFP/MC-XXXFP/FGFP
12. A/D CONVERTER
12.5 Repeat Sweep Mode 1
In this mode, the input voltages on all pins are A/D converted repeatedly, with priority given to the selected pins.
Table 12.6 shows the specifications of repeat sweep mode 1. Figure 12.8 shows the ADCON0 to ADCON1
registers in repeat sweep mode 1.
Table 12.6 Repeat Sweep Mode 1 Specifications
Item
Specification
Function
The input voltages on all selected pins are A/D converted repeatedly,with prior-
ity given to pins selected by the ADCON1 register's SCAN1 to SCAN0 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 • 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 pins to be given Select from AN0 (1 pins), AN0 to AN1 (2 pins), AN0 to AN2 (3 pins), AN0 to AN3
priority when A/D converted _{(4 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 175 of 326
REJ03B0152-0210