SH7144_08 Datasheet, PDF (585/930 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series

Section 15 A/D Converter
15. A/D Converter
This LSI includes a successive approximation type 10-bit A/D converter. The block diagram of the
A/D converter is shown in figure 15.1.
15.1 Features
• 10-bit resolution
• Input channels
⎯ 8 channels (two independent A/D conversion modules)
• Conversion time: 5.4 µs per channel (at Pφ = 25-MHz operation), 6.7µs per channel (at Pφ =
20-MHz operation)
• Three operating modes
⎯ Single mode: Single-channel A/D conversion
⎯ Continuous scan mode: Continuous A/D conversion on 1 to 4 channels
⎯ Single-cycle scan mode: Single-cycle A/D conversion on 1 to 4 channels
• Data registers
⎯ Conversion results are held in a 16-bit data register for each channel
• Sample and hold function
• Three methods for conversion start
⎯ Software
⎯ Conversion start trigger from multifunction timer pulse unit (MTU)
⎯ External trigger signal
• Interrupt request
⎯ An A/D conversion end interrupt request (ADI) can be generated
• Module standby mode can be set
ADCMS20B_010020020700
Rev.4.00 Mar. 27, 2008 Page 541 of 882
REJ09B0108-0400