HD64F2145 Datasheet, PDF (599/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Section 21 A/D Converter
This LSI includes a successive-approximation-type 10-bit A/D converter that allows up to eight
analog input channels and up to 16 digital input to be selected. A/D conversion for digital input is
effective as a comparator in multiple input testing.
21.1 Features
• 10-bit resolution
• Ιnput channels: eight analog input channels and 16 digital input channels
• Analog conversion voltage range can be specified using the reference power supply voltage
pin (AVref) as an analog reference voltage.
• Conversion time: 13.4 µs per channel (at 10-MHz operation)
• Two kinds of operating modes
 Single mode: Single-channel A/D conversion
 Scan mode: Continuous A/D conversion on 1 to 4 channels
• Four data registers
 Conversion results are held in a 16-bit data register for each channel
• Sample and hold function
• Three kinds of conversion start
 Software, 8-bit timer (TMR) conversion start trigger, or external trigger signal.
• Interrupt request
 A/D conversion end interrupt (ADI) request can be generated
ADCMS33A_010020020700
Rev. 2.0, 08/02, page 559 of 788