ATMEGA128A-MUR Atmel, ATMEGA128A-MUR Datasheet - Page 50
ATMEGA128A-MUR
Manufacturer Part Number
ATMEGA128A-MUR
Description
MCU AVR 128K FLASH 16MHZ 64QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA128A-MUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
4K 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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9.10
9.10.1
8151H–AVR–02/11
Register Description
MCUCR - MCU Control Register
The MCU Control Register contains control bits for power management.
• Bit 5 – 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 pro-
grammers purpose, it is recommended to write the Sleep Enable (SE) bit to one just before the
execution of the SLEEP instruction and to clear it immediately after waking up.
• Bits 4:2 – SM2:0: Sleep Mode Select Bits 2, 1, and 0
These bits select betw’een the six available sleep modes as shown in
Table 9-2.
Note:
Bit
Read/Write
Initial Value
SM2
0
0
0
0
1
1
1
1
1. Standby mode and Extended Standby mode are only available with external crystals or
resonators.
Sleep Mode Select
SRE
R/W
7
0
SM1
0
0
1
1
0
0
1
1
SRW10
R/W
6
0
R/W
SE
5
0
SM0
0
1
0
1
0
1
0
1
SM1
R/W
4
0
Sleep Mode
Idle
ADC Noise Reduction
Power-down
Power-save
Reserved
Reserved
Standby
Extended Standby
SM0
R/W
3
0
(1)
SM2
R/W
2
0
(1)
IVSEL
Table
ATmega128A
R/W
1
0
9-2.
IVCE
R/W
0
0
MCUCR
50
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