SH7147 Datasheet, PDF (685/1108 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 15 A/D Converter (ADC)
4.5 V to 5.5 V
0.0 V
10 μF
Analog input pin
Analog input pin
0.1 μF
0.1 μF
3 kΩ
3 kΩ
0.1 μF
0.1 μF
AVcc
AVss
AVrefh
AVrefl
This LSI
AN0 to AN7
AN8 to AN15
Figure 15.9 Example of Analog Input Pin Protection Circuit
15.7.6 Notes on Register Setting
• Set the ADST bit in the A/D control register (ADCR) after the A/D start trigger select register
(ADSTRGR) and the A/D analog input channel select register (ADANSR) have been set. Do
not modify the settings of the ADCS, ACE, ADIE, TRGE, and EXTRG bits while the ADST
bit in the ADCR register is set to 1.
• Do not start the A/D conversion when the ANS bits (ANS[7:0]) in the A/D analog input
channel select register (ADANSR) are all 0.
Rev. 3.00 Oct. 06, 2008 Page 661 of 1080
REJ09B0230-0300