Chapter 16 A/D Converter; Outline - Fujitsu F2MC-16LX MB90580 Series Hardware Manual

Chapter 16:
A/D Converter

16.1 Outline

The A/D converter converts analog input voltages into digital values. The A/D converter has the following
features:
Conversion time: 5.2 µs min. per channel (at 16 MHz machine clock)
•
• RC sequential compare conversion format with sample and hold circuit
• 10-bit resolution
• Analog input selected from eight channels by programming
Single conversion mode:
Scan conversion mode:
Continuous conversion mode: Voltages in the specified channel are converted repeatedly.
Stop conversion mode:
• At the end of A/D conversion, a relevant interrupt request can be issued to the CPU. This interrupt can
be used to activate I2OS, which transfers A/D conversion result data to memory. This feature is suitable
for continuous processing.
• The activation factors can be selected from software, external trigger (falling edge), or timer (rising
edge).
One channel is selected for conversion.
Voltages in multiple consecutive channels are converted. Up to eight
channels can be programmed.
Voltages in a single channel are converted, then the system pauses
and stands by for the next activation. (The conversion start points
can be synchronized.)