ATMEGA644P-20MU Atmel, ATMEGA644P-20MU Datasheet - Page 21
![IC MCU AVR 64K FLASH 44-QFN](/photos/12/13/121316/313-44-qfn_sml.jpg)
ATMEGA644P-20MU
Manufacturer Part Number
ATMEGA644P-20MU
Description
IC MCU AVR 64K FLASH 44-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644P-20MU
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-VQFN Exposed Pad
Processor Series
ATMEGA64x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
2-Wire, JTAG, SPI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
32
Number Of Timers
5
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
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Controller Family/series
AVR MEGA
No. Of I/o's
32
Eeprom Memory Size
2KB
Ram Memory Size
4KB
Cpu Speed
20MHz
Rohs Compliant
Yes
For Use With
ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA644P-20MU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
7.3
8011OS–AVR–07/10
Note:
44M1
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
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
ATmega164P/324P/644P
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
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