mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 269
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mc9s12vr48
Manufacturer Part Number
mc9s12vr48
Description
S12 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S12VR48.pdf
(592 pages)
- Current page: 269 of 592
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8.3.2.9
This read-only register contains the Conversion Complete Flags CCF[5:0].
Read: Anytime
Write: Anytime, no effect
Freescale Semiconductor
Module Base + 0x000A
CCF[5:0]
Reset
Field
5–0
W
R
15
0
0
Conversion Complete Flag n (n= 5, 4, 3, 2, 1, 0) (n conversion number, NOT channel number!)— A
conversion complete flag is set at the end of each conversion in a sequence. The flags are associated with the
conversion position in a sequence (and also the result register number). Therefore in non-fifo mode, CCF[4] is
set when the fifth conversion in a sequence is complete and the result is available in result register ATDDR4;
CCF[5] is set when the sixth conversion in a sequence is complete and the result is available in ATDDR5, and
so forth.
If automatic compare of conversion results is enabled (CMPE[n]=1 in ATDCMPE), the conversion complete flag
is only set if comparison with ATDDRn is true. If ACMPIE=1 a compare interrupt will be requested. In this case,
as the ATDDRn result register is used to hold the compare value, the result will not be stored there at the end of
the conversion but is lost.
In case of a concurrent set and clear on CCF[n]: The clearing by method A) will overwrite the set. The clearing
by methods B) or C) or D) will be overwritten by the set.
0 Conversion number n not completed or successfully compared
1 If (CMPE[n]=0): Conversion number n has completed. Result is ready in ATDDRn.
ATD Status Register 2 (ATDSTAT2)
= Unimplemented or Reserved
If (CMPE[n]=1): Compare for conversion result number n with compare value in ATDDRn, using compare
operator CMPGT[n] is true. (No result available in ATDDRn)
A flag CCF[n] is cleared when one of the following occurs:
A) Write to ATDCTL5 (a new conversion sequence is started)
B) If AFFC=0, write “1” to CCF[n]
C) If AFFC=1 and CMPE[n]=0, read of result register ATDDRn
D) If AFFC=1 and CMPE[n]=1, write to result register ATDDRn
14
0
0
13
0
0
12
0
0
Figure 8-11. ATD Status Register 2 (ATDSTAT2)
MC9S12VR Family Reference Manual, Rev. 2.2
Table 8-18. ATDSTAT2 Field Descriptions
Preliminary - Subject to Change Without Notice
11
0
0
10
0
0
9
0
0
0
0
8
Description
0
0
7
0
0
6
Analog-to-Digital Converter (ADC12B6CV2)
5
0
0
4
CCF[5:0]
0
3
0
2
0
1
0
0
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