ATMEGA644A-PU Atmel, ATMEGA644A-PU Datasheet - Page 561

• 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

31.4
Notes:
8272A–AVR–01/10
44A
40P6
44M1
44MC
49C2
Speed (MHz)
ATmega324PA
1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information
2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also
3. For Speed vs. V
4. NiPdAu Lead Finish.
5. Tape & Reel.
20
and minimum quantities.
Halide free and fully Green.
44-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP)
40-pin, 0.600” Wide, Plastic Dual Inline Package (PDIP)
44-pad, 7 x 7 x 1.0 mm body, lead pitch 0.50 mm, Thermally Enhanced Plastic Very Thin Quad Flat No-Lead (VQFN)
44-lead (2-row Staggered), 5 x 5 x 1.0 mm body, 2.60 x 2.60 mm Exposed Pad, Quad Flat No-Lead Package (QFN)
49-ball, (7 x 7 Array) 0.65 mm Pitch, 5 x 5 x 1 mm, Very Thin, Fine-Pitch Ball Grid Array Package (VFBGA)
(3)
CC
Power Supply
164A/164PA/324A/324PA/644A/644PA/1284/1284P
1.8 - 5.5V
see
”Speed Grades” on page
Ordering Code
ATmega324PA-AU
ATmega324PA-AUR
ATmega324PA-PU
ATmega324PA-MU
ATmega324PA-MUR
ATmega324PA-MCH
ATmega324PA-MCHR
ATmega324PA-CU
ATmega324PA-CUR
Package Type
333.
(2)
(5)
(5)
(5)
(4)
(4)(5)
Package
44A
44A
40P6
44M1
44M1
44MC
44MC
49C2
49C2
(1)
Operational Range
(-40
Industrial
o
C to 85
o
C)
561