ATMEGA644A-PU Atmel, ATMEGA644A-PU Datasheet - Page 28
![IC MCU AVR 64K FLASH 40PDIP](/photos/6/70/67049/453-40-dip_sml.jpg)
ATMEGA644A-PU
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
9.4
8272AS–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
28