mc9s12q128 Freescale Semiconductor, Inc, mc9s12q128 Datasheet - Page 240

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mc9s12q128

Manufacturer Part Number
mc9s12q128
Description
Hcs12 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet

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Chapter 8 Analog-to-Digital Converter (ATD10B8C) Block Description
8.3.2.9
This register contains the SC bit used to enable special channel conversions.
Read: Anytime, returns unpredictable values for Bit 7 and Bit 6
Write: Anytime
240
Module Base + 0x0009
Reset
Field
SC
0
W
R
Special Channel Conversion Bit — If this bit is set, then special channel conversion can be selected using CC,
CB, and CA of ATDCTL5.
0 Special channel conversions disabled
1 Special channel conversions enabled
Note: Always write remaining bits of ATDTEST1 (Bit7 to Bit1) zero when writing SC bit. Not doing so might result
ATD Test Register 1 (ATDTEST1)
U
0
7
in unpredictable ATD behavior.
= Unimplemented or Reserved
SC
1
1
1
1
1
U
0
6
CC
0
1
1
1
1
Figure 8-11. ATD Test Register 1 (ATDTEST1)
Table 8-15. Special Channel Select Coding
Table 8-14. ATDTEST1 Field Descriptions
Table 8-15
CB
X
0
0
1
1
U
0
5
CA
lists the coding.
X
0
1
0
1
MC9S12Q128
Rev 1.09
U
0
4
Description
Analog Input Channel
(V
U
0
3
Reserved
Reserved
RH
V
+V
V
RH
RL
RL
) / 2
U
0
2
Freescale Semiconductor
U
0
1
SC
0
0

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