IC MCU 128K 6MHZ A/D IT 64TQFP

ATMEGA103-6AI

Manufacturer Part NumberATMEGA103-6AI
DescriptionIC MCU 128K 6MHZ A/D IT 64TQFP
ManufacturerAtmel
SeriesAVR® ATmega
ATMEGA103-6AI datasheets
 

Specifications of ATMEGA103-6AI

Core ProcessorAVRCore Size8-Bit
Speed6MHzConnectivitySPI, UART/USART
PeripheralsPOR, PWM, WDTNumber Of I /o32
Program Memory Size128KB (64K x 16)Program Memory TypeFLASH
Eeprom Size4K x 8Ram Size4K x 8
Voltage - Supply (vcc/vdd)4 V ~ 5.5 VData ConvertersA/D 8x10b
Oscillator TypeInternalOperating Temperature-40°C ~ 85°C
Package / Case64-TQFP, 64-VQFPFor Use WithATSTK501 - ADAPTER KIT FOR 64PIN AVR MCU
Lead Free Status / RoHS StatusContains lead / RoHS non-compliant  
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Analog-to-Digital
Converter
Feature list:
0945I–AVR–02/07
10-bit Resolution
±2 LSB Absolute Accuracy
0.5 LSB Integral Non-linearity
70 - 280 µs Conversion Time
Up to 14 kSPS
8 Multiplexed Input Channels
Interrupt on ADC Conversion Complete
Sleep Mode Noise Canceler
The ATmega103(L) features a 10-bit successive approximation ADC. The ADC is con-
nected to an 8-channel Analog Multiplexer, which allows each pin of Port F to be used
as an input for the ADC. The ADC contains a Sample and Hold Amplifier, which ensures
that the input voltage to the ADC is held at a constant level during conversion. A block
diagram of the ADC is shown in Figure 45.
The ADC has two separate analog supply voltage pins, AV
be connected to GND, and the voltage on AV
V
. See the section “ADC Noise Canceling Techniques” on page 82 on how to connect
CC
these pins.
An external reference voltage must be applied to the AREF pin. This voltage must be in
the range AGND - AV
.
CC
Figure 45. Analog-to-Digital Converter Block Schematic
8-BIT DATA BUS
External
Reference
Voltage
10-BIT DAC
8-
Analog
CHANNEL
Inputs
-
MUX
+
SAMPLE & HOLD
COMPARATOR
ATmega103(L)
and AGND. AGND must
CC
must not differ more than ± 0.3V from
CC
ADC CONVERSION
COMPLETE IRQ
ADC MULTIPLEXER
ADC CTRL & STATUS
SELECT (ADMUX)
REGISTER (ADCSR)
CONVERSION LOGIC
9
0
ADC DATA REGISTER
(ADCH/ADCL)
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