ATMEGA16A-MUR Atmel, ATMEGA16A-MUR Datasheet - Page 265
ATMEGA16A-MUR
Manufacturer Part Number
ATMEGA16A-MUR
Description
MCU AVR 16KB FLASH 16MHZ 44QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA16A-MU.pdf
(352 pages)
Specifications of ATMEGA16A-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
32
Program Memory Size
16KB (8K 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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26.2
8154B–AVR–07/09
Fuse Bits
Table 26-2.
Notes:
The ATmega16A has two fuse bytes.
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 26-3.
Notes:
Fuse High
Byte
OCDEN
JTAGEN
SPIEN
CKOPT
EESAVE
BOOTSZ1
BOOTSZ0
BOOTRST
BLB1 Mode
4
1
2
3
4
(1)
1. Program the Fuse bits before programming the Lock bits.
2. “1” means unprogrammed, “0” means programmed
1. The SPIEN Fuse is not accessible in SPI Serial Programming mode.
2. The CKOPT Fuse functionality depends on the setting of the CKSEL bits. See
3. The default value of BOOTSZ1:0 results in maximum Boot Size. See
Memory Lock Bits
(2)
(4)
(5)
Sources” on page 25.
Lock Bit Protection Modes (Continued)
Fuse High Byte
Bit No.
BLB12
7
6
5
4
3
2
1
0
0
1
1
0
0
Description
Enable OCD
Enable JTAG
Enable SPI Serial Program and
Data Downloading
Oscillator options
EEPROM memory is preserved
through the Chip Erase
Select Boot Size (see
for details)
Select Boot Size (see
for details)
Select reset vector
(2)
BLB11
1
1
0
0
1
for details.
Protection Type
LPM executing from the Boot Loader section is not allowed to
read from the Application section. If interrupt vectors are placed
in the Boot Loader section, interrupts are disabled while
executing from the Application section.
No restrictions for SPM or 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 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.
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.
Table 26-3
Table 25-6
Table 25-6
and
Table 26-4
1 (unprogrammed)
0 (programmed)
0 (programmed)
Default Value
1 (unprogrammed, OCD disabled)
0 (programmed, JTAG enabled)
0 (programmed, SPI prog. enabled)
1 (unprogrammed, EEPROM not
preserved)
1 (unprogrammed)
describe briefly the functionality
ATmega16A
Table 25-6 on page
(3)
(3)
See “Clock
262.
265
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