ATMEGA32U4-MUR Atmel, ATMEGA32U4-MUR Datasheet - Page 347
ATMEGA32U4-MUR
Manufacturer Part Number
ATMEGA32U4-MUR
Description
MCU AVR 16K FLASH 16MHZ 44VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA16U4-MU.pdf
(433 pages)
Specifications of ATMEGA32U4-MUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
26
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2.5K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-VQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA32U4-MUR
Manufacturer:
UCC
Quantity:
1 001
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28.2
7766F–AVR–11/10
Fuse Bits
Table 28-2.
Notes:
The ATmega16U4/ATmega32U4 has three bytes.
functionality of all the fuses and how they are mapped into the Fuse bytes. Note that the fuses
are read as logical zero, “0”, if they are programmed.
Table 28-3.
Notes:
BLB1 Mode
Fuse Low Byte
–
–
–
–
HWBE
BODLEVEL2
BODLEVEL1
BODLEVEL0
1
2
3
4
Memory Lock Bits
1. Program the Fuse bits and Boot Lock bits before programming the LB1 and LB2.
2. “1” means unprogrammed, “0” means programmed
1. See
2. “1” means unprogrammed, “0” means programmed
(1)
(1)
(1)
Lock Bit Protection Modes
Extended Fuse Byte
BLB12
Table 8-2 on page 52
1
1
0
0
Bit No
7
6
5
4
3
2
1
0
BLB11
Description
–
–
–
–
Hardware Boot Enable
Brown-out Detector trigger level
Brown-out Detector trigger level
Brown-out Detector trigger level
1
0
0
1
Protection Type
No restrictions for SPM or (E)LPM accessing the Boot Loader
section.
SPM is not allowed to write to the Boot Loader section.
SPM is not allowed to write to the Boot Loader section, and (E)LPM
executing from the Application section is not allowed to read from
the Boot Loader section. If Interrupt Vectors are placed in the
Application section, interrupts are disabled while executing from the
Boot Loader section.
(E)LPM executing from the Application section is not allowed to
read from the Boot Loader section. If Interrupt Vectors are placed in
the Application section, interrupts are disabled while executing from
the Boot Loader section.
(2)
for BODLEVEL Fuse decoding.
(1)(2)
(Continued)
Table 28-3
ATmega16/32U4
0 (programmed)
-
ATmega16/32U4
Table 28-5
1 (unprogrammed)
1 (unprogrammed)
0 (programmed)
Default Value
describe briefly the
1
1
1
1
ATmega16/32U4RC
1 (unprogrammed)
347
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