ATMEGA1281V-8MU Atmel, ATMEGA1281V-8MU Datasheet - Page 292

• Manufacturer Part Number: ATMEGA1281V-8MU
• Description: IC MCU AVR 128K FLASH 64-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA1281V-8MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-MLF®, 64-QFN
• Processor Series: ATMEGA128x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 8 KB
• Interface Type: 2-Wire, SPI, USART
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 54
• Number Of Timers: 6
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit
• For Use With: ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFPATAVRDB101 - MODULE DISPLAY LCD/RGB BACKLIGHT770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

25.8.3
2549M–AVR–09/10
ADCSRA – ADC Control and Status Register A
Table 25-4.
Note:
• Bit 7 – ADEN: ADC Enable
Writing this bit to one enables the ADC. By writing it to zero, the ADC is turned off. Turning the
ADC off while a conversion is in progress, will terminate this conversion.
Bit
(0x7A)
Read/Write
Initial Value
101000
101001
101010
101011
101100
101101
101110
101111
110000
110001
110010
110011
110100
110101
110110
110111
111000
111001
111010
111011
111100
111101
111110
111111
MUX5:0
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
1. To reach the given accuracy, 10x or 200x Gain should not be used for operating voltage below
2.7V.
Input Channel Selections (Continued)
Reserved
Reserved
Single Ended
ADEN
R/W
7
0
Input
N/A
N/A
ADSC
R/W
6
0
ATmega640/1280/1281/2560/2561
ADC8
ADC9
ADC8
ADC9
ADC10
ADC11
ADC10
ADC11
ADC8
ADC9
ADC10
ADC11
ADC12
ADC13
ADC14
ADC15
ADC8
ADC9
ADC10
ADC11
ADC12
ADC13
ADATE
R/W
Positive Differential
5
0
Input
ADIF
R/W
4
0
ADIE
R/W
3
0
ADC8
ADC8
ADC8
ADC8
ADC10
ADC10
ADC10
ADC10
ADC9
ADC9
ADC9
ADC9
ADC9
ADC9
ADC9
ADC9
ADC10
ADC10
ADC10
ADC10
ADC10
ADC10
ADPS2
Negative Differential
R/W
N/A
N/A
2
0
Input
ADPS1
R/W
1
0
ADPS0
R/W
0
0
10x
10x
200x
200x
10x
10x
200x
200x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
ADCSRA
Gain
292