ATmega1281 Atmel Corporation, ATmega1281 Datasheet - Page 377
ATmega1281
Manufacturer Part Number
ATmega1281
Description
Manufacturer
Atmel Corporation
Specifications of ATmega1281
Flash (kbytes)
128 Kbytes
Pin Count
64
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
54
Ext Interrupts
17
Usb Speed
No
Usb Interface
No
Spi
3
Twi (i2c)
1
Uart
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
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
2
Pwm Channels
8
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATmega1281-8MC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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31.8
Table 31-9.
2549N–AVR–05/11
Symbol
AVCC
V
R
V
V
R
V
REF
INT1
INT2
REF
AIN
IN
ADC Characteristics – Preliminary Data
Parameter
Resolution
Absolute accuracy (Including
INL, DNL, quantization error,
gain and offset error)
Integral Non-Linearity (INL)
Differential Non-Linearity (DNL)
Gain Error
Offset Error
Conversion Time
Clock Frequency
Analog Supply Voltage
Reference Voltage
Input Voltage
Input Bandwidth
Internal Voltage Reference
Internal Voltage Reference
Reference Input Resistance
Analog Input Resistance
ADC Characteristics, Singel Ended Channels
Note:
1. Values are guidelines only.
Single Ended Conversion
Single Ended Conversion
V
CLK
Single Ended Conversion
V
CLK
Single Ended Conversion
V
CLK
Noise Reduction Mode
Single Ended Conversion
V
CLK
Noise Reduction Mode
Single Ended Conversion
V
CLK
Single Ended Conversion
V
CLK
Single Ended Conversion
V
CLK
Single Ended Conversion
V
CLK
Free Running Conversion
Single Ended Conversion
1.1V
2.56V
REF
REF
REF
REF
REF
REF
REF
REF
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 200kHz
= 200kHz
Condition
= 1MHz
= 200kHz
= 1MHz
= 200kHz
= 200kHz
= 200kHz
CC
CC
CC
CC
CC
CC
CC
CC
= 4V,
= 4V,
= 4V,
= 4V,
= 4V,
= 4V,
= 4V,
= 4V,
ATmega640/1280/1281/2560/2561
V
Min
CC
GND
1.0
1.0
2.4
13
50
- 0.3
(1)
Typ
2.25
1.25
38,5
2.56
100
0.5
1.1
10
32
-2
3
2
3
2
(1)
V
CC
Max
AVCC
1000
V
260
2.5
1.2
2.8
REF
+ 0.3
(1)
Units
LSB
Bits
kHz
kHz
MΩ
kΩ
µs
V
V
377
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