ATMEGA644A-PU Atmel, ATMEGA644A-PU Datasheet - Page 330

• Manufacturer Part Number: ATMEGA644A-PU
• Description: IC MCU AVR 64K FLASH 40PDIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644A-PU

• 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): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Processor Series: ATmega
• Core: AVR
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: JTAG, TWI, SPI, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

27.1.3
Table 27-4.
Notes:
27.1.4
Table 27-5.
Notes:
8272A–AVR–01/10
Symbol
I
Symbol
I
CC
CC
1. All bits set in the
2. Typical values at 25°C. Maximum values are test limits in production.
3. The current consumption values include input leakage current.
1. All bits set in the
2. Typical values at 25°C. Maximum values are test limits in production.
3. The current consumption values include input leakage current.
ATmega324A DC Characteristics
ATmega324PA DC Characteristics
T
T
Parameter
Parameter
Power Supply Current
Power-save mode
Power-down mode
Power Supply Current
Power-save mode
Power-down mode
A
A
= -40°C to 85°C, V
= -40°C to 85°C, V
”PRR – Power Reduction Register” on page
”PRR – Power Reduction Register” on page
164A/164PA/324A/324PA/644A/644PA/1284/1284P
(3)
(3)
(3)
(3)
(1)
(1)
CC
CC
= 1.8V to 5.5V (unless otherwise noted)
= 1.8V to 5.5V (unless otherwise noted)
Condition
Active 1 MHz, V
Active 4 MHz, V
Active 8 MHz, V
Idle 1 MHz, V
Idle 4 MHz, V
Idle 8 MHz, V
32 kHz TOSC enabled,
V
32 kHz TOSC enabled,
V
WDT enabled, V
WDT disabled, V
Condition
Active 1 MHz, V
Active 4 MHz, V
Active 8 MHz, V
Idle 1 MHz, V
Idle 4 MHz, V
Idle 8 MHz, V
32 kHz TOSC enabled,
V
32 kHz TOSC enabled,
V
WDT enabled, V
WDT disabled, V
CC
CC
CC
CC
= 1.8V
= 3V
= 1.8V
= 3V
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
= 2V
= 3V
= 5V
= 2V
= 3V
= 5V
CC
CC
= 2V
= 3V
= 5V
= 2V
= 3V
= 5V
= 3V
= 3V
= 3V
= 3V
49.
49.
Min.
Min.
Typ.
Typ.
0.06
0.35
0.15
0.06
0.35
0.15
0.3
1.5
0.3
1.5
5.2
1.3
0.5
0.6
4.2
5.2
1.3
0.5
0.6
4.2
(2)
(2)
Max.
Max.
0.15
0.55
0.5
2.7
0.7
5.0
8.0
2.0
3.5
0.5
1.5
5.5
3.0
12
15
9
Units
Units
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
µA
µA
µA
µA
µA
µA
µA
µA
330