SH7144 Datasheet, PDF (503/773 Pages) Renesas Technology Corp – Hitachi SuperH RISC engine

Section 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. 2.0, 09/02, page 463 of 732