MC9S12XDP512CFU
Model | MC9S12XDP512CFU |
Description | 16-BIT, FLASH, 40MHz, MICROCONTROLLER, PQFP80 |
PDF file | Total 1348 pages (File size: 8M) |
Chip Manufacturer | PHILIPS |
Chapter 4 Analog-to-Digital Converter (ATD10B16CV4) Block Description
Table 4-3. Multi-Channel Wrap Around Coding
WRAP3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
WRAP2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
WRAP1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
WRAP0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Multiple Channel Conversions
(MULT = 1) Wrap Around to AN0
after Converting
Reserved
AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN8
AN9
AN10
AN11
AN12
AN13
AN14
AN15
4.3.2.2
ATD Control Register 1 (ATDCTL1)
Writes to this register will abort current conversion sequence but will not start a new sequence.
7
6
5
4
3
2
1
0
R
ETRIGSEL
W
Reset
0
0
0
0
ETRIGCH3
ETRIGCH2
1
ETRIGCH1
1
ETRIGCH0
1
0
0
0
1
= Unimplemented or Reserved
Figure 4-4. ATD Control Register 1 (ATDCTL1)
Read: Anytime
Write: Anytime
Table 4-4. ATDCTL1 Field Descriptions
Field
7
ETRIGSEL
Description
External Trigger Source Select
— This bit selects the external trigger source to be either one of the AD
channels or one of the ETRIG[3:0] inputs. See device specification for availability and connectivity of
ETRIG[3:0] inputs. If ETRIG[3:0] input option is not available, writing a 1 to ETRISEL only sets the bit but has
no effect, that means one of the AD channels (selected by ETRIGCH[3:0]) remains the source for external
trigger. The coding is summarized in
Table 4-5.
3:0
External Trigger Channel Select
— These bits select one of the AD channels or one of the ETRIG[3:0] inputs
ETRIGCH[3:0] as source for the external trigger. The coding is summarized in
Table 4-5.
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
131