ATMEGA649-16MUR Atmel, ATMEGA649-16MUR Datasheet - Page 330

• Manufacturer Part Number: ATMEGA649-16MUR
• Description: MCU AVR 64KB FLASH 16MHZ 64QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA649-16MUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, LCD, 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): 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

28.5
Table 28-4.
Notes:
Table 28-5.
Notes:
330
Symbol
V
V
V
V
t
t
V
t
I
RST
HYST
BOD
POT
PSR
RST
BG
BG
BG
System and Reset Characteristics
1. The Power-on Reset will not work unless the supply voltage has been below V
1. V
ATmega329/3290/649/6490
tested down to V
a voltage where correct operation of the microcontroller is no longer guaranteed. The test is performed using
BODLEVEL = 10 for ATmega329/3290/649/6490V and BODLEVEL = 01 for ATmega329/3290/649/6490L.
BODLEVEL 1:0 Fuses
BOT
Reset, Brown-out, and Internal Voltage Reference Characteristics
BODLEVEL Fuse Coding
Parameter
Power-on Reset Threshold Voltage (rising)
Power-on Reset Threshold Voltage
(falling)
Power-on Slope Rate
Minimum pulse width on RESET Pin
Brown-out Detector Hysteresis
Min Pulse Width on Brown-out Reset
Bandgap reference voltage
Bandgap reference start-up time
Bandgap reference current consumption
RESET Pin Threshold Voltage
may be below nominal minimum operating voltage for some devices. For devices where this is the case, the device is
(1)
11
10
01
00
CC
= V
BOT
during the production test. This guarantees that a Brown-Out Reset will occur before V
(1)
Min V
1.7
2.5
4.1
BOT
T
T
V
V
V
A
A
Condition
T
T
T
V
V
CC
CC
CC
= -40°C to
= -40°C to
A
A
A
CC
CC
85°C
85°C
= 25°C
= 25°C
= 25°C
= 2.7V,
= 2.7V,
= 2.7V,
= 3V
= 3V
Typ V
1.8
2.7
4.3
0.2 V
BOT
BOD Disabled
0.05
0.01
Min
0.7
1.0
POT
CC
(falling)
Typ
800
1.0
0.9
1.1
50
40
15
2
Max V
2.0
2.9
4.5
BOT
0.85 V
Max
1.4
1.3
4.5
1.2
70
CC
2552K–AVR–04/11
CC
Units
Units
drops to
V/ms
V
mV
µA
ns
µs
µs
V
V
V
V