ATMEGA64-16MJ Atmel, ATMEGA64-16MJ Datasheet - Page 291

• Manufacturer Part Number: ATMEGA64-16MJ
• Description: IC MCU AVR 64K 5V 16MHZ 64-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA64-16MJ

• 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: 53
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-MLF®, 64-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Fuse Bits
2490Q–AVR–06/10
Table 116. Lock Bit Protection Modes
Notes:
The ATmega64 has three fuse bytes.
all the fuses and how they are mapped into the fuse bytes. Note that the fuses are read as logi-
cal zero, “0”, if they are programmed.
Table 117. Extended Fuse Byte
Notes:
Fuse Ext Byte
–
–
–
–
–
–
M103C
WDTON
1
2
3
4
Memory Lock Bits
(1)
1. Program the Fuse bits before programming the Lock bits.
2. “1” means unprogrammed, “0” means programmed
1. See
2. See
(2)
“ATmega103 and ATmega64 Compatibility” on page 4
“WDTCR – Watchdog Timer Control Register” on page 57
1
1
0
0
Bit no
7
6
5
4
3
2
1
0
1
0
0
1
Description
–
–
–
–
–
–
ATmega103 compatibility mode
Watchdog Timer always on
Protection Type
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.
(2)
Table 117
(Continued)
-
Table 119
describe briefly the functionality of
for details.
Default Value
1
1
1
1
1
1
0 (programmed)
1 (unprogrammed)
for details.
ATmega64(L)
291