ATMEGA645A-MUR Atmel, ATMEGA645A-MUR Datasheet - Page 326

• Manufacturer Part Number: ATMEGA645A-MUR
• Description: IC MCU AVR 64K FLASH 64QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA645A-MUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• 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): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

27.5
27.6
27.6.1
326
System and Reset Characteristics
Power-on Reset
ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/645
ATmega169A/169PA/329A/329PA/3290A/3290PA/649A/649P/6490A/6490PA
revision C and later
The following characteristics apply only to ATmega165A/165PA
Table 27-13. Reset, Brown-out and Internal Voltage Characteristics
Note:
Table 27-14. Reset, Brown-out and Internal Voltage Reference Characteristics,
Notes:
Symbol
Symbol
V
V
V
V
SR
t
t
V
V
t
I
RST
BOD
HYST
POT
RST
BG
BG
PSR
BG
POT
ON
1. The Power-on Reset will not work unless the supply voltage has been below V
1. The Power-on Reset will not work unless the supply voltage has been below V
Parameter
Power-on Reset Threshold
Voltage (rising)
Power-on Reset Threshold
Voltage (falling)
Power-on Reset 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
Parameter
Power-on Reset Threshold Voltage (rising)
Power-on Reset Threshold Voltage (falling)
Power-on Slope Rate
T
A
= -40°C to 85°C
(1)
V
V
V
Condition
T
T
T
T
T
V
V
CC
CC
CC
A
A
to 85°C
to 85°C
A
A
A
CC
CC
= -40°C
= -40°C
= 25°C
= 25°C
= 25°C
= 2.7V,
= 2.7V,
= 2.7V,
= 3V
= 3V
(1)
0.2 V
Min
1.1
0.6
1.0
0.1
CC
Min.
0.01
1.1
0.6
Typ
1.4
1.3
1.1
50
40
10
2
Typ
1.4
1.3
0.9 V
Max
1.6
1.6
4.5
2.5
1.2
Max
70
1.6
1.6
10
POT
POT
8285B–AVR–03/11
CC
(falling)
(falling)
Units
V/ms
Units
V/ms
mV
V
V
µA
µs
µs
µs
V
V
V
V