ATMEGA644-20AU Atmel, ATMEGA644-20AU Datasheet - Page 316

• Manufacturer Part Number: ATMEGA644-20AU
• Description: IC AVR MCU FLASH 64K 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644-20AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• 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: 44-TQFP, 44-VQFP
• Processor Series: ATMEGA64x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: 2-Wire/SPI/USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATAVRRZ541, ATAVRRAVEN, ATAVRRZRAVEN, ATAVRRZUSBSTICK, ATAVRRZ201
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• Cpu Family: ATmega
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 20MHz
• Total Internal Ram Size: 4KB
• # I/os (max): 32
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 44
• Package Type: TQFP
• Package: 44TQFP
• Family Name: ATmega
• Maximum Speed: 20 MHz
• For Use With: ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

26. Electrical Characteristics
26.1
26.2
T
316
A
Operating Temperature....................................-55⋅C to +125⋅C
Storage Temperature ..................................... -65°C to +150°C
Voltage on any Pin except RESET
with respect to Ground ................................-0.5V to V
Voltage on RESET with respect to Ground......-0.5V to +13.0V
Maximum Operating Voltage ............................................ 6.0V
DC Current per I/O Pin ............................................... 40.0 mA
DC Current
Symbol
V
V
V
V
V
V
V
V
I
I
R
R
IL
IH
OL
OH
IL
IL1
IL2
IH
IH1
IH2
= -40⋅C to 85⋅C, V
RST
PU
Absolute Maximum Ratings*
DC Characteristics
ATmega644
Input Low Voltage,Except
XTAL1 and Reset pin
Input Low Voltage,
XTAL1 pin
Input Low Voltage,
RESET pin
Input High Voltage,
Except XTAL1 and
RESET pins
Input High Voltage,
XTAL1 pin
Input High Voltage,
RESET pin
Output Low Voltage
Output High Voltage
Input Leakage
Current I/O Pin
Input Leakage
Current I/O Pin
Reset Pull-up Resistor
I/O Pin Pull-up Resistor
Parameter
V
CC
and GND Pins................................ 200.0 mA
CC
= 1.8V to 5.5V (unless otherwise noted)
(3)
(4)
,
,
Condition
V
V
V
V
V
V
V
V
V
I
I
I
I
V
(absolute value)
V
(absolute value)
OL
OL
OH
OH
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
= 10 mA, V
= 5 mA, V
= -20 mA, V
= -10 mA, V
= 1.8V - 2.4V
= 2.4V - 5.5V
= 1.8V - 5.5V
= 1.8V - 5.5V
= 1.8V - 2.4V
= 2.4V - 5.5V
= 1.8V - 2.4V
= 2.4V - 5.5V
= 1.8V - 5.5V
= 5.5V, pin low
= 5.5V, pin high
CC
CC
CC
+0.5V
CC
CC
= 3V
= 5V
= 5V
= 3V
*NOTICE:
0.7V
0.6V
0.8V
0.7V
0.9V
Min.
-0.5
-0.5
-0.5
-0.5
4.2
2.3
30
20
CC
CC
CC
CC
CC
(5)
(2)
(2)
(2)
(2)
(2)
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
device reliability.
Typ.
V
V
V
V
V
0.2V
0.3V
0.1V
0.1V
Max.
CC
CC
CC
CC
CC
0.7
0.5
60
50
1
1
+ 0.5
+ 0.5
+ 0.5
+ 0.5
+ 0.5
CC
CC
CC
CC
(5)
(1)
(1)
(1)
(1)
2593N–AVR–07/10
Units
µA
kΩ
V