ATAVRMC321 Atmel, ATAVRMC321 Datasheet - Page 172
![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
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18.2.1
18.3
172
Signature Bytes
ATtiny261/461/861
Latching of Fuses
Table 18-5.
Notes:
Note that fuse bits are locked if Lock Bit 1 (LB1) is programmed. Fuse bits should be pro-
grammed before lock bits. The status of fuse bits is not affected by chip erase.
Fuse bits can also be read by device firmware. See section
Software” on page
Fuse values are latched when the device enters programming mode and changes to fuse values
have no effect until the part leaves programming mode. This does not apply to the EESAVE
Fuse which will take effect once it is programmed. Fuses are also latched on power-up.
All Atmel microcontrollers have a three-byte signature code which identifies the device. This
code can be read in both serial and High-voltage Programming mode, also when the device is
locked. The three bytes reside in a separate address space. The ATtiny261/461/861signature
bytes are given in
Table 18-6.
Fuse Low Byte
CKDIV8
CKOUT
SUT1
SUT0
CKSEL3
CKSEL2
CKSEL1
CKSEL0
Parts
ATtiny261
ATtiny461
ATtiny861
1. See
2. Allows system clock to be output on pin. See
3. The default value results in maximum start-up time for the default clock source. See
4. The default setting results in internal RC Oscillator @ 8.0 MHz. See
(2)
(1)
on page 28
details.
Fuse Low Byte
Device ID
“System Clock Prescaler” on page 31
Table
167.
Bit No
for details.
7
6
5
4
3
2
1
0
18-6.
Description
Divide clock by 8
Clock Output Enable
Select start-up time
Select start-up time
Select Clock source
Select Clock source
Select Clock source
Select Clock source
0x000
0x1E
0x1E
0x1E
Signature Bytes Address
for details.
“Clock Output Buffer” on page 32
0x001
0x91
0x92
0x93
“Reading Fuse and Lock Bits from
1 (unprogrammed)
Default Value
0 (programmed)
1 (unprogrammed)
0 (programmed)
0 (programmed)
0 (programmed)
1 (unprogrammed)
0 (programmed)
Table 6-6 on page 28
0x002
0x0C
0x0D
0x08
2588E–AVR–08/10
(3)
(4)
(4)
(4)
for details.
(3)
(4)
Table 6-7
for
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