ATMEGA128A-MU Atmel, ATMEGA128A-MU Datasheet - Page 292

• Manufacturer Part Number: ATMEGA128A-MU
• Description: MCU 8BIT 128K ISP FLASH 64-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA128A-MU

• 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: 64-MLF®, 64-QFN
• Processor Series: ATMEGA128x
• Core: AVR8
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Controller Family/series: AVR MEGA
• No. Of I/o's: 53
• Eeprom Memory Size: 4KB
• Ram Memory Size: 4KB
• Cpu Speed: 16MHz
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

26.2
8151H–AVR–02/11
Fuse Bits
Table 26-2.
Notes:
The ATmega128A has three 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:
Table 26-4.
–
–
–
–
–
–
M103C
WDTON
Fuse High
Byte
OCDEN
JTAGEN
SPIEN
CKOPT
BLB1 mode
Extended Fuse Byte
1
2
3
4
(1)
(1)
1. Program the fuse bits before programming the Lock bits.
2. “1” means unprogrammed, “0´means programmed
1. See
2. See
(2)
(4)
(2)
Memory Lock Bits
(5)
Lock Bit Protection Modes (Continued)
Extended Fuse Byte
Fuse High Byte
“ATmega103 and ATmega128A Compatibility” on page 4
“WDTCR - Watchdog Timer Control Register” on page 57
Bit No.
BLB12
7
6
5
4
1
1
0
0
Description
Enable OCD
Enable JTAG
Enable
Downloading
Oscillator options
BLB11
Bit No.
1
0
0
1
7
6
5
4
3
2
1
0
Serial Program and Data
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.
Description
–
–
–
–
–
–
ATmega103 compatibility mode
Watchdog Timer always on
Table 26-3
-
Table 26-5
Default Value
1 (unprogrammed, OCD disabled)
0 (programmed, JTAG enabled)
0 (programmed, SPI prog. enabled)
1 (unprogrammed)
describe briefly the functionality
for details.
for details.
ATmega128A
Default Value
1
1
1
1
1
1
0 (programmed)
1 (unprogrammed)
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