Conversion Using Ei 2 Os Function - Fujitsu MB90895 Series Hardware Manual

13.5.4 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.
I 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 specitied count depends on the setting of the EI
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 13.5-4.
Figure 13.5-4 Flow of Conversion when Using EI
A/D converter start-up
Sample & hold
A/D conversion start
A/D conversion finish
Interrupt generating
2
EI OS start-up
Conversion result transmission
Specified count
completed
Interrupt processing
OS Function
NO
*
Interrupt clear
YES
2
OS
CHAPTER 13 8/10-bit A/D converter
2
OS
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