ATMEGA644A-AU Atmel, ATMEGA644A-AU Datasheet - Page 569
ATMEGA644A-AU
Manufacturer Part Number
ATMEGA644A-AU
Description
IC MCU AVR 64K FLASH 44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644A-AU
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
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA644A-AU
Manufacturer:
Atmel
Quantity:
135
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32.4
8272A–AVR–01/10
Note:
44MC
Package Drawing Contact:
packagedrawings@atmel.com
1. The terminal #1 ID is a Laser-marked Feature.
D2
D
A18
A13
B15
B11
eR
L
A19
164A/164PA/324A/324PA/644A/644PA/1284/1284P
A12
B16
B10
Pin 1 ID
BOTTOM VIEW
TOP VIEW
eT/2
E2
E
R0.20
TITLE
44MC, 44QFN (2-Row Staggered), 5 x 5 x 1.00 mm Body,
2.60 x 2.60 mm Exposed Pad, Quad Flat No Lead Package
B20
B6
0.40
L
A24
A7
B1
B5
L
A1
A6
b
eT
SYMBOL
A
A1
b
C
D
D2
E
E2
eT
eR
K
L
y
A
COMMON DIMENSIONS
0.80
0.00
0.18
4.90
2.55
4.90
2.55
0.45
0.30
0.00
MIN
(Unit of Measure = mm)
–
–
0.20 REF
C
NOM
A1
0.90
0.02
0.23
5.00
2.60
5.00
2.60
0.70
0.40
0.35
–
–
SIDE VIEW
DRA WING NO .
y
0.075
MAX
1.00
0.05
0.30
5.10
2.65
5.10
2.65
0.40
44MC
–
–
–
N O T E
9/13/07
REV .
A
569
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