mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 224

• Manufacturer Part Number: mc9s12e256
• Description: Hcs12 Microcontrollers 16-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 6 Analog-to-Digital Converter (ATD10B16CV4)
6.3.2.9
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
224
Reset
Field
SC
W
0
R
SC
1
1
1
1
1
1
ATD Test Register 1 (ATDTEST1)
u
0
7
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
Writing to this register when in special modes can alter functionality.
= Unimplemented or Reserved
CD
0
0
0
0
0
1
u
0
6
Figure 6-11. Reserved Register 1 (ATDTEST1)
Table 6-20. Special Channel Select Coding
Table 6-19. ATDTEST1 Field Descriptions
CC
MC9S12E256 Data Sheet, Rev. 1.08
X
0
1
1
1
1
u
0
5
Table 6-20
lists the coding.
NOTE
CB
u
0
4
X
X
0
0
1
1
Description
3
u
0
CA
X
X
0
1
0
1
u
0
2
u = Unaffected
Analog Input Channel
(V
Reserved
Reserved
Reserved
RH
Freescale Semiconductor
V
+V
V
RH
RL
u
0
1
RL
) / 2
SC
0
0