ATMEGA644A-MU Atmel, ATMEGA644A-MU Datasheet - Page 29
![IC MCU AVR 64K FLASH 44VQFN](/photos/12/13/121316/313-44-qfn_sml.jpg)
ATMEGA644A-MU
Manufacturer Part Number
ATMEGA644A-MU
Description
IC MCU AVR 64K FLASH 44VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644A-MU
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-VQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
9.5
8272AS–AVR–01/10
A1 BALL CORNER
49C2
Package Drawing Contact:
packagedrawings@atmel.com
A1 BALL ID
e
G
D
C
F
E
B
A
164A/164PA/324A/324PA/644A/644PA/1284/1284P
b
1
2
BOTTOM VIEW
3
TOP VIEW
E1
E
4
TITLE
49C2, 49-ball (7 x 7 Array), 0.65 mm Pitch,
5.0 x 5.0 x 1.0 mm, Very Thin, Fine-Pitch
Ball Grid Array Package (VFBGA)
5
6
e
7
D1
D
49 -
Ø
0.35 ± 0.05
SYMBOL
A
A1
A2
D
D1
E
E1
b
e
A
SIDE VIEW
0.20
0.65
4.90
4.90
0.30
COMMON DIMENSIONS
MIN
(Unit of Measure = mm)
–
GPC
A2
CBD
A1
3.90 BSC
3.90 BSC
0.65 BSC
0.10
NOM
5.00
5.00
0.35
–
–
–
DRAWING NO.
49C2
MAX
1.00
5.10
5.10
0.40
–
–
NOTE
3/14/08
REV.
A
29