ATMEGA8A-MUR Atmel, ATMEGA8A-MUR Datasheet - Page 36
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ATMEGA8A-MUR
Manufacturer Part Number
ATMEGA8A-MUR
Description
MCU AVR 8KB FLASH 16MHZ 32QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA8A-MU.pdf
(308 pages)
Specifications of ATMEGA8A-MUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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- Download datasheet (6Mb)
9.8
9.8.1
8159D–AVR–02/11
Register Description
MCUCR – MCU Control Register
The MCU Control Register contains control bits for power management.
• Bit 7 – SE: Sleep Enable
The SE bit must be written to logic one to make the MCU enter the sleep mode when the SLEEP
instruction is executed. To avoid the MCU entering the sleep mode unless it is the programmer’s
purpose, it is recommended to set the Sleep Enable (SE) bit just before the execution of the
SLEEP instruction.
• Bits 6:4 – SM2:0: Sleep Mode Select Bits 2, 1, and 0
These bits select between the five available sleep modes as shown in
Table 9-2.
Note:
Bit
Read/Write
Initial Value
SM2
0
0
0
0
1
1
1
1. Standby mode is only available with external crystals or resonators.
Sleep Mode Select
R/W
SE
7
0
SM1
0
0
1
1
0
0
1
SM2
R/W
6
0
SM1
R/W
5
0
SM0
0
1
0
1
0
1
0
SM0
R/W
4
0
Sleep Mode
Idle
ADC Noise Reduction
Power-down
Power-save
Reserved
Reserved
Standby
ISC11
R/W
3
0
(1)
ISC10
R/W
2
0
ISC01
R/W
Table
1
0
ATmega8A
9-2.
ISC00
R/W
0
0
MCUCR
36
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