mc9s12xs128 Freescale Semiconductor, Inc, mc9s12xs128 Datasheet - Page 286

• Manufacturer Part Number: mc9s12xs128
• Description: Hcs12 Microcontrollers 16-bit Automotive Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Analog-to-Digital Converter (ADC12B16CV1)
10.3.2.7
This register contains the Sequence Complete Flag, overrun flags for external trigger and FIFO mode, and
the conversion counter.
Read: Anytime
Write: Anytime (No effect on (CC3, CC2, CC1, CC0))
286
Module Base + 0x0006
ETORF
Reset
FIFOR
Field
SCF
7
5
4
W
R
SCF
Sequence Complete Flag — This flag is set upon completion of a conversion sequence. If conversion
sequences are continuously performed (SCAN=1), the flag is set after each one is completed. This flag is cleared
when one of the following occurs:
0 Conversion sequence not completed
1 Conversion sequence has completed
External Trigger Overrun Flag — While in edge trigger mode (ETRIGLE=0), if additional active edges are
detected while a conversion sequence is in process the overrun flag is set. This flag is cleared when one of the
following occurs:
0 No External trigger over run error has occurred
1 External trigger over run error has occurred
Result Register Over Run Flag — This bit indicates that a result register has been written to before its
associated conversion complete flag (CCF) has been cleared. This flag is most useful when using the FIFO mode
because the flag potentially indicates that result registers are out of sync with the input channels. However, it is
also practical for non-FIFO modes, and indicates that a result register has been over written before it has been
read (i.e. the old data has been lost). This flag is cleared when one of the following occurs:
0 No over run has occurred
1 Overrun condition exists (result register has been written while associated CCFx flag was still set)
ATD Status Register 0 (ATDSTAT0)
0
7
A) Write “1” to ETORF
B) Write to ATDCTL0,1,2,3,4, ATDCMPE or ATDCMPHT (a conversion sequence is aborted)
C) Write to ATDCTL5 (a new conversion sequence is started)
A) Write “1” to FIFOR
B) Write to ATDCTL0,1,2,3,4, ATDCMPE or ATDCMPHT (a conversion sequence is aborted)
C) Write to ATDCTL5 (a new conversion sequence is started)
A) Write “1” to SCF
B) Write to ATDCTL5 (a new conversion sequence is started)
C) If AFFC=1 and read of a result register
= Unimplemented or Reserved
0
0
6
Figure 10-9. ATD Status Register 0 (ATDSTAT0)
Table 10-16. ATDSTAT0 Field Descriptions
S12XS Family Reference Manual, Rev. 1.10
ETORF
0
5
FIFOR
0
4
Description
CC3
0
3
CC2
0
2
Freescale Semiconductor
CC1
0
1
CC0
0
0