T89C5115_08 ATMEL [ATMEL Corporation], T89C5115_08 Datasheet - Page 86
T89C5115_08
Manufacturer Part Number
T89C5115_08
Description
Low Pin Count 8-bit Microcontroller with A/D Converter and 16 KBytes Flash Memory
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.T89C5115_08.pdf
(113 pages)
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Routine Examples
86
AT89C5115
Figure 41. ADC interrupt structure
Note:
1. Configure P1.2 and P1.3 in ADC channels
// configure channel P1.2 and P1.3 for ADC
// Enable the ADC
2. Start a standard conversion
// The variable ’channel’ contains the channel to convert
// The variable ’value_converted’ is an unsigned int
// Clear the field SCH[2:0]
// Select channel
// Start conversion in standard mode
// Wait flag End of conversion
// Clear the End of conversion flag
// read the value
3. Start a precision conversion (need interrupt ADC)
// The variable ’channel’ contains the channel to convert
// Enable ADC
// clear the field SCH[2:0]
// Select the channel
// Start conversion in precision mode
ADCF = 0Ch
ADCON = 20h
ADCON &= F8h
ADCON |= channel
ADCON |= 08h
while((ADCON & 01h)!= 01h)
ADCON &= EFh
value_converted = (ADDH << 2)+(ADDL)
EADC = 1
ADCON &= F8h
ADCON |= channel
ADCON |= 48h
To enable the ADC interrupt: EA = 1
ADEOC
ADCON.2
EADC
IEN1.1
ADCI
4128G–8051–02/08
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