S9S12GN16F0CFT Freescale Semiconductor, S9S12GN16F0CFT Datasheet - Page 533
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S9S12GN16F0CFT
Manufacturer Part Number
S9S12GN16F0CFT
Description
16-bit Microcontrollers - MCU 16-bit16k Flash 2k RAM
Manufacturer
Freescale Semiconductor
Datasheet
1.S9S12GN16F0CFT.pdf
(1292 pages)
Specifications of S9S12GN16F0CFT
Rohs
yes
Core
S12
Processor Series
MC9S12G
Data Bus Width
16 bit
Maximum Clock Frequency
25 MHz
Program Memory Size
16 KB
Data Ram Size
1024 B
On-chip Adc
Yes
Operating Supply Voltage
3.13 V to 5.5 V
Operating Temperature Range
- 40 C to + 85 C
Package / Case
TSSOP-20
Mounting Style
SMD/SMT
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15.3.2.6
Writes to this register will abort current conversion sequence and start a new conversion sequence. If the
external trigger function is enabled (ETRIGE=1) an initial write to ATDCTL5 is required to allow starting
of a conversion sequence which will then occur on each trigger event. Start of conversion means the
beginning of the sampling phase.
Read: Anytime
Write: Anytime
Freescale Semiconductor
Module Base + 0x0005
CD, CC,
CB, CA
Reset
SCAN
MULT
Field
3–0
SC
6
5
4
W
R
Special Channel Conversion Bit — If this bit is set, then special channel conversion can be selected using CD,
CC, CB and CA of ATDCTL5.
0 Special channel conversions disabled
1 Special channel conversions enabled
Continuous Conversion Sequence Mode — This bit selects whether conversion sequences are performed
continuously or only once. If the external trigger function is enabled (ETRIGE=1) setting this bit has no effect,
thus the external trigger always starts a single conversion sequence.
0 Single conversion sequence
1 Continuous conversion sequences (scan mode)
Multi-Channel Sample Mode — When MULT is 0, the ATD sequence controller samples only from the specified
analog input channel for an entire conversion sequence. The analog channel is selected by channel selection
code (control bits CD/CC/CB/CA located in ATDCTL5). When MULT is 1, the ATD sequence controller samples
across channels. The number of channels sampled is determined by the sequence length value (S8C, S4C, S2C,
S1C). The first analog channel examined is determined by channel selection code (CD, CC, CB, CA control bits);
subsequent channels sampled in the sequence are determined by incrementing the channel selection code or
wrapping around to AN0 (channel 0).
0 Sample only one channel
1 Sample across several channels
Analog Input Channel Select Code — These bits select the analog input channel(s).
coding used to select the various analog input channels.
In the case of single channel conversions (MULT=0), this selection code specifies the channel to be examined.
In the case of multiple channel conversions (MULT=1), this selection code specifies the first channel to be
examined in the conversion sequence. Subsequent channels are determined by incrementing the channel
selection code or wrapping around to AN0 (after converting the channel defined by the Wrap Around Channel
Select Bits WRAP3-0 in ATDCTL0). When starting with a channel number higher than the one defined by
WRAP3-0 the first wrap around will be AN16 to AN0.
ATD Control Register 5 (ATDCTL5)
0
0
7
= Unimplemented or Reserved
SC
0
6
Figure 15-8. ATD Control Register 5 (ATDCTL5)
Table 15-14. ATDCTL5 Field Descriptions
MC9S12G Family Reference Manual, Rev.1.23
SCAN
Table 15-15
0
5
lists the coding.
MULT
0
4
Description
CD
0
3
Analog-to-Digital Converter (ADC10B16CV2)
CC
0
2
Table 15-15
CB
0
1
lists the
CA
0
0
535
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