mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 307

• Manufacturer Part Number: mc68hc912dg128
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

ATD0TESTH/ATD1TESTH — ATD Test Register
ATD0TESTL/ATD1TESTL — ATD Test Register
MC68HC912DG128 — Rev 3.0
MOTOROLA
RESET:
RESET:
SAR1
SAR9
Bit 7
Bit 7
0
0
SAR0
SAR8
6
0
6
0
SAR[9:0] — SAR Data
Freescale Semiconductor, Inc.
Each of these bits are associated with an individual ATD result
register. For each register, this bit is set at the end of conversion for
the associated ATD channel and remains set until that ATD result
register is read. It is cleared at that time if AFFC bit is set, regardless
of whether a status register read has been performed (i.e., a status
register read is not a pre-qualifier for the clearing mechanism when
AFFC = 1). Otherwise the status register must be read to clear the
flag.
The test registers control various special modes which are used
during manufacturing. The test register can be read or written only in
the special modes. In the normal modes, reads of the test register
return zero and writes have no effect.
Reads of this byte return the current value in the SAR. Writes to this
byte change the SAR to the value written. Bits SAR[9:0] reflect the ten
SAR bits used during the resolution process for a 10-bit result.
For More Information On This Product,
SAR7
RST
5
0
5
0
Analog-to-Digital Converter
Go to: www.freescale.com
TSTOUT
SAR6
4
0
4
0
SAR5
TST3
3
0
3
0
SAR4
TST2
2
0
2
0
SAR3
TST1
1
0
1
0
Analog-to-Digital Converter
SAR2
TST0
Bit 0
Bit 0
0
0
Technical Data
ATD Registers
$0068/$01E8
$0069/$01E9
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