ATAVRMC321 Atmel, ATAVRMC321 Datasheet - Page 39
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
ATAVRMC321
Manufacturer Part Number
ATAVRMC321
Description
KIT EVAL MOTOR CTRL LOW COST
Manufacturer
Atmel
Series
AVR®r
Specifications of ATAVRMC321
Main Purpose
Power Management, Motor Control
Embedded
Yes, MCU, 8-Bit
Utilized Ic / Part
ATtinyx61
Primary Attributes
3-Ph BLDC, Brushed DC, Stepper Motor- Controller Board
Secondary Attributes
Includes ATAVRMC300 Power Driver Board
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 39 of 242
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7.4
7.4.1
7.4.2
2588E–AVR–08/10
Register Description
MCUCR – MCU Control Register
PRR – Power Reduction Register
Refer to
able Register 1” on page 162
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 programmer’s
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, 3 – SM1:0: Sleep Mode Select Bits 2:0
These bits select between the three available sleep modes as shown in
Table 7-2.
• Bit 2 – Res: Reserved Bit
This bit is reserved and will always read zero.
The Power Reduction Register provides a method to reduce power consumption by allowing
peripheral clock signals to be disabled.
• Bits 7, 6, 5, 4 – Res: Reserved Bits
These bits are reserved and will always read zero.
• Bit 3 – PRTIM1: Power Reduction Timer/Counter1
Writing a logic one to this bit shuts down the Timer/Counter1 module. When the Timer/Counter1
is enabled, operation will continue like before the shutdown.
Bit
0x35 (0x55)
Read/Write
Initial Value
Bit
0x36 (0x56)
Read/Write
Initial Value
SM1
0
0
1
1
“DIDR0 – Digital Input Disable Register 0” on page 162
7
–
R
0
Sleep Mode Select
7
–
R
0
6
PUD
R/W
0
6
-
R
0
SM0
0
1
0
1
for details.
5
SE
R/W
0
5
-
R
0
Sleep Mode
Idle
ADC Noise Reduction
Power-down
Standby
4
SM1
R/W
0
4
-
R
0
3
SM0
R/W
0
3
PRTIM1
R/W
0
2
—
R
0
2
PRTIM0
R/W
0
or
“DIDR1 – Digital Input Dis-
1
ISC01
R/W
0
1
PRUSI
R/W
0
Table
0
ISC00
R/W
0
7-2.
0
PRADC
R/W
0
MCUCR
PRR
39
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