Page 216
17. 10-bit AD Converter (ADC)
17.3 Function
T
5CL8
Figure 17-3 Repeat Mode
17.3.3 Register Setting
1. Set up the AD converter control register 1 (ADCCR1) as follows:
• Choose the channel to AD convert using AD input channel select (SAIN).
• Specify analog input enable for analog input control (AINDS).
• Specify AMD for the AD converter control operation mode (software or repeat mode).
2. Set up the AD converter control register 2 (ADCCR2) as follows:
• Set the AD conversion time using AD conversion time (ACK). For details on how to set the con-
version time, refer to Figure 17-1 and AD converter control register 2.
• Choose IREFON for DA converter control.
3. After setting up (1) and (2) above, set AD conversion start (ADRS) of AD converter control register 1
(ADCCR1) to “1”. If software start mode has been selected, AD conversion starts immediately.
4. After an elapse of the specified AD conversion time, the AD converted value is stored in AD con-
verted value register 1 (ADCDR1) and the AD conversion finished flag (EOCF) of AD converted
value register 2 (ADCDR2) is set to “1”, upon which time AD conversion interrupt INTADC is gener-
ated.
5. EOCF is cleared to “0” by a read of the conversion result. However, if reconverted before a register
read, although EOCF is cleared the previous conversion result is retained until the next conversion is
completed.
ADCDR1,ADCDR2
EOCF cleared by reading
conversion result
Conversion
result read
ADCDR2<EOCF>
INTADC interrupt request
Conversion operation
ADCCR1<ADRS>
Indeterminate
AD conversion start
ADCCR1<AMD>
“11”
“00”
1st conversion
result
AD convert operation suspended.
Conversion result is not stored.
2nd conversion result
3rd conversion result
ADCDR1
ADCDR2
2nd conversion result
3rd conversion result
1st conversion result
Conversion
result read
Conversion
result read
Conversion
result read
Conversion
result read
Conversion
result read
Содержание CEM2100/00
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Страница 20: ...20 PCB LAYOUT CD CONNECTOR TOP SIDE VIEW ...
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Страница 22: ...22 SET EXPLODER VIEW DRAWING ...
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Страница 113: ...Revision History Date Revision 2008 7 31 1 First Release ...
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Страница 126: ...Page 4 1 3 Block Diagram T5CL8 1 3 Block Diagram Figure 1 2 Block Diagram ...
Страница 130: ...Page 8 1 4 Pin Names and Functions T5CL8 ...
Страница 155: ...Page 33 T5CL8 ...
Страница 156: ...Page 34 2 Operational Description 2 3 Reset Circuit T5CL8 ...
Страница 186: ...Page 64 5 I O Ports 5 8 Port P7 P77 to P70 T5CL8 ...
Страница 194: ...Page 72 6 Watchdog Timer WDT 6 3 Address Trap T5CL8 ...
Страница 214: ...Page 92 8 16 Bit TimerCounter 1 TC1 8 3 Function T5CL8 ...
Страница 270: ...Page 148 12 Asynchronous Serial interface UART1 12 9 Status Flag T5CL8 ...
Страница 280: ...Page 158 13 Asynchronous Serial interface UART2 13 9 Status Flag T5CL8 ...
Страница 332: ...Page 210 16 Serial Bus Interface I2C Bus Ver D SBI 16 6 Data Transfer of I2C Bus T5CL8 ...
Страница 342: ...Page 220 17 10 bit AD Converter ADC 17 6 Precautions about AD Converter T5CL8 ...
Страница 354: ...Page 232 19 Flash Memory 19 4 Access to the Flash Memory Area T5CL8 ...
Страница 388: ...Page 266 21 Input Output Circuit 21 2 Input Output Ports T5CL8 ...
Страница 397: ...Page 275 T5CL8 23 Package Dimensions LQFP64 P 1010 0 50D Rev 01 Unit mm ...
Страница 398: ...Page 276 23 Package Dimensions T5CL8 ...
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Страница 428: ...TC94B14MFG 2010 01 12 28 Package LQFP80 P 1212 0 50F Weight 0 6 g Typical ...