T89C5115-RATIM datasheet(86/113 Pages) ATMEL

Part #	T89C5115-RATIM

Description	Low Pin Count 8-bit Microcontroller with A/D Converter and 16 KBytes Flash Memory

PDF	113 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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86 / 113 page

AT89C5115

4128G–8051–02/08

Figure 41. ADC interrupt structure

Routine Examples

1. Configure P1.2 and P1.3 in ADC channels

// configure channel P1.2 and P1.3 for ADC

ADCF = 0Ch

// Enable the ADC

ADCON = 20h

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]

ADCON &= F8h

// Select channel

ADCON |= channel

// Start conversion in standard mode

ADCON |= 08h

// Wait flag End of conversion

while((ADCON & 01h)!= 01h)

// Clear the End of conversion flag

ADCON &= EFh

// read the value

value_converted = (ADDH << 2)+(ADDL)

3. Start a precision conversion (need interrupt ADC)

// The variable ’channel’ contains the channel to convert

// Enable ADC

EADC = 1

// clear the field SCH[2:0]

ADCON &= F8h

// Select the channel

ADCON |= channel

// Start conversion in precision mode

ADCON |= 48h

Note:

To enable the ADC interrupt: EA = 1

ADEOC

ADCON.2

EADC

IEN1.1

ADCI

T89C5115-RATIM Datasheet(PDF) 86 Page - ATMEL Corporation

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