ATmega640 Atmel Corporation, ATmega640 Datasheet - Page 378

• Manufacturer Part Number: ATmega640
• Manufacturer: Atmel Corporation

Specifications of ATmega640

• Flash (kbytes): 64 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 86
• Ext Interrupts: 32
• Usb Speed: No
• Usb Interface: No
• Spi: 5
• Twi (i2c): 1
• Uart: 4
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 8
• Eeprom (bytes): 4096
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 6
• Output Compare Channels: 16
• Input Capture Channels: 4
• Pwm Channels: 15
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Table 31-10. ADC Characteristics, Differential Channels
2549N–AVR–05/11
Symbol
Parameter
Quantization Error, Gain and Offset Error)
Absolute Accuracy(Including INL, DNL,
Differential Non-Linearity (DNL)
Integral Non-Linearity (INL)
Clock Frequency
Conversion Time
Offset Error
Resolution
Gain Error
Gain = 1×
V
CLK
Gain = 10×
V
CLK
Gain = 200×
V
CLK
Gain = 1×
V
CLK
Gain = 10×
V
CLK
Gain = 200×
V
CLK
Gain = 1×
V
CLK
Gain = 10×
V
CLK
Gain = 200×
V
CLK
Gain =
Gain = 10×
Gain = 200×
Gain = 1×
V
CLK
Gain = 10×
V
CLK
Gain = 200×
V
CLK
REF
REF
REF
REF
REF
REF
REF
REF
REF
REF
REF
REF
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ATmega640/1280/1281/2560/2561
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
Gain = 10×
Gain = 200×
Gain =
Condition
= 50 - 200kHz
= 50 - 200kHz
= 50 - 200kHz
= 50 - 200kHz
= 50 - 200kHz
= 50 - 200kHz
= 50 - 200kHz
= 50 - 200kHz
= 50 - 200kHz
= 50 - 200kHz
= 50 - 200kHz
= 50 - 200kHz
1×
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
= 5V
= 5V
= 5V
= 5V
= 5V
= 5V
= 5V
= 5V
= 5V
= 5V
= 5V
= 5V
1×
Min
50
65
(1)
Typ
0.75
2.5
1.5
1.7
1.7
0.5
18
17
10
8
8
7
9
5
9
2
2
3
(1)
Max
200
260
(1)
Units
LSB
LSB
Bits
kHz
µs
%
378