AT89C51CC02UA-RATUM Atmel, AT89C51CC02UA-RATUM Datasheet - Page 129

• Manufacturer Part Number: AT89C51CC02UA-RATUM
• Description: IC 8051 MCU 16K FLASH 32-VQFP
• Manufacturer: Atmel
• Series: AT89C CANr

Specifications of AT89C51CC02UA-RATUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 20
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFP, 32-VQFP
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: UART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 20
• Number Of Timers: 1
• Operating Supply Voltage: 3 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: CANADAPT28
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• For Use With: AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

IT ADC Management
Routine Examples
4126L–CAN–01/08
An interrupt end-of-conversion will occurs when the bit ADEOC is activated and the bit
EADC is set. For re-arming the interrupt the bit ADEOC must be cleared by software.
Figure 55. 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
AT/T89C51CC02
ADCI
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