Conversion Using Ei 2 Os Function - Fujitsu F2MCTM-16LX Hardware Manual

CHAPTER 18 8-/10-BIT A/D CONVERTER
18.5.4 Conversion Using EI
The 8-/10-bit A/D converter can transfer the A/D conversion result to memory by using
2
the EI OS function.
Conversion Using EI
The use of the EI
memory without the loss of converted data even if A/D conversion is performed continuously.
The conversion flow when the EI
*: The specified count depends on the setting of the EI
366
2
2
OS
2
OS enables the A/D-converted data protection function to transfer multiple data to
2
OS is used is shown in Figure 18.5-4 .
Figure 18.5-4 Flow of Conversion when Using EI
A/D converter starts
Sample & hold
A/D conversion starts
A/D conversion terminates
Interrupt generated
2
EI OS starts
Converted data transferred
Specified count
completed?*
YES
Interrupt processing
OS Function
NO
Interrupt cleared
2
OS.
2
OS