SH7108 Datasheet, PDF (363/560 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

Section 11 A/D Converter
Section 11 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 11.1.
11.1 Features
• 10-bit resolution
• Input channels
SH7108: 12 channels (three independent A/D conversion modules)
SH7109: 16 channels (two independent A/D conversion modules)
• Conversion time: 6.7 µs (at Pφ = 20-MHz operation) or 5.4 µs (at Pφ = 25-MHz operation) per
channel
• Three operating modes
Single mode: Single-channel A/D conversion
Continuous scan mode: Repetitive A/D conversion on 1 to 4 channels in the SH7108 and on 1
to 8 channels in the SH7109
Single-cycle scan mode: Continuous A/D conversion on 1 to 4 channels in the SH7108 and on
1 to 8 channels in the SH7109
• 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) or motor management
timer (MMT)
External trigger signal
• Interrupt request: An A/D conversion end interrupt request (ADI) can be generated
• Module standby mode can be set
ADCMS20B_020020030700
Rev.1.00 Sep. 18, 2008 Page 329 of 522
REJ09B0069-0100