Fujitsu FR81S User Manual
CHAPTER 44: 12-BIT A/D CONVERTER
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: 12-BIT A/D CONVERTER
FUJITSU SEMICONDUCTOR CONFIDENTIAL
87
5.2.11.
A/D conversion data
The A/D conversion data is explained.
The A/D conversion result data is stored in A/D data bit (ADTCD.D11 to D0) at each activation channel.
Moreover, when the data protection function is disabled (ADTCS.PRT="0"), the state of the A/D conversion
data stored in A/D data bit (ADTCD.D11 to D0) can be confirmed by the conversion data error flag bit
(ADTCD.ERR) and the conversion data error status bit (ADTCD.ERRST).
When the data protection function is enabled (ADTCS.PRT="1"), the conversion data error flag bit
(ADTCD.ERR) and the conversion data error status bit (ADTCD.ERRST) are fixed to "0".
Table 5-6 State confirmation of conversion data (When the data protection function is
disabled)
ADTCD.ERR
ADTCD.ERRST
State of A/D conversion data
0
0
The latest data (read out not yet)
0
1
- (It does not have the meaning)
1
0
The old data (already read out)
* initial value
1
1
The latest data/
The over-writing is generated (read out not yet)
* There is lost data
MB91520 Series
MN705-00010-1v0-E
1890