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ATMEGA640 Datasheet(PDF) 365 Page - Microchip Technology

Part # ATMEGA640
Description  8-bit Microcontroller with 16/32/64KB In-System Programmable Flash
PDF  436 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

ATMEGA640 Datasheet(HTML) 365 Page - Microchip Technology

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ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]
DS40002211A
31.8 ADC Characteristics – Preliminary Data
Note:
1. Values are guidelines only.
Table 31-9.
ADC Characteristics, Singel Ended Channels
Symbol
Parameter
Condition
Min. (1)
Typ. (1)
Max. (1)
Units
Resolution
Single Ended Conversion
10
Bits
Absolute accuracy (Including
INL, DNL, quantization error,
gain and offset error)
Single Ended Conversion
VREF = 4V, VCC = 4V,
CLKADC= 200kHz
2.25
2.5
LSB
Single Ended Conversion
VREF = 4V, VCC = 4V,
CLKADC = 1MHz
3
Single Ended Conversion
VREF = 4V, VCC = 4V,
CLKADC = 200kHz
Noise Reduction Mode
2
Single Ended Conversion
VREF = 4V, VCC = 4V,
CLKADC = 1MHz
Noise Reduction Mode
3
Integral Non-Linearity (INL)
Single Ended Conversion
VREF = 4V, VCC = 4V,
CLKADC = 200kHz
1.25
Differential Non-Linearity (DNL)
Single Ended Conversion
VREF = 4V, VCC = 4V,
CLKADC = 200kHz
0.5
Gain Error
Single Ended Conversion
VREF = 4V, VCC = 4V,
CLKADC= 200kHz
2
Offset Error
Single Ended Conversion
VREF = 4V, VCC = 4V,
CLKADC = 200kHz
-2
Conversion Time
Free Running Conversion
13
260
µs
Clock Frequency
Single Ended Conversion
50
1000
kHz
AVCC
Analog Supply Voltage
VCC - 0.3
VCC + 0.3
V
VREF
Reference Voltage
1.0
AVCC
VIN
Input Voltage
GND
VREF
Input Bandwidth
38,5
kHz
VINT1
Internal Voltage Reference
1.1V
1.0
1.1
1.2
V
VINT2
Internal Voltage Reference
2.56V
2.4
2.56
2.8
RREF
Reference Input Resistance
32
k
RAIN
Analog Input Resistance
100
M



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