ATMEGA645P-MUR Atmel, ATMEGA645P-MUR Datasheet - Page 327

• Manufacturer Part Number: ATMEGA645P-MUR
• Description: MCU AVR 64KB FLASH 16MHZ 64QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA645P-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-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

27.6.2
27.7
27.8
Table 27-17. Asynchronous External Interrupt Characteristics
8285B–AVR–03/11
Symbol
t
INT
Brown-out Detection
External Interrupts Characteristics
ATmega325A/325PA/3250A/3250PA/645A/645P/6450A/6450PA
revision A and B
Parameter
Minimum pulse width for asynchronous external interrupt
ATmega165A/165PA/325A/325PA/3250A/3250PA/6
Table 27-15. Reset, Brown-out, and Internal Voltage Reference Characteristics,
Note:
Table 27-16. BODLEVEL Fuse Coding
Note:
Symbol
V
SR
POT
ON
BODLEVEL 2...0 Fuses
1. The Power-on Reset will not work unless the supply voltage has been below V
1. V
this is the case, the device is tested down to V
antees that a Brown-Out Reset will occur before V
operation of the microcontroller is no longer guaranteed. The test is performed using
BODLEVEL = 110, 101, and 100.
BOT
Parameter
Power-on Reset Threshold Voltage (rising)
Power-on Reset Threshold Voltage (falling)
Power-on Slope Rate
T
A
may be below nominal minimum operating voltage for some devices. For devices where
111
110
101
100
011
010
001
000
= -40°C to 85°C
Min V
(1)
1.7
2.5
4.1
BOT
Condition
(1)
CC
= V
Typ V
CC
1.8
2.7
4.3
BOT
drops to a voltage where correct
BOD Disabled
BOT
Reserved
during the production test. This guar-
Min.
0.05
0.01
0.7
Min
Max V
Typ
Typ
1.0
0.9
50
2.0
2.9
4.5
BOT
Max
Max
1.4
1.3
4.5
POT
(falling)
Units
Units
V/ms
Units
V
ns
V
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