ATmega644A - Summary

8-bit AVR Microcontrollers
ATmega644A
DATASHEET SUMMARY
Introduction
®
The Atmel ATmega644A is a low-power CMOS 8-bit microcontroller based
on the AVR® enhanced RISC architecture. By executing powerful
instructions in a single clock cycle, the ATmega644A achieves throughputs
close to 1MIPS per MHz. This empowers system designer to optimize the
device for power consumption versus processing speed.
Feature
High Performance, Low Power Atmel®AVR® 8-Bit Microcontroller Family
•
Advanced RISC Architecture
– 131 Powerful Instructions
– Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 20 MIPS Throughput at 20MHz
– On-chip 2-cycle Multiplier
•
High Endurance Non-volatile Memory Segments
– 64KBytes of In-System Self-Programmable Flash Program
Memory
– 2KBytes EEPROM
– 4KBytes Internal SRAM
– Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
– Data Retention: 20 Years at 85°C/100 Years at 25°C(1)
– Optional Boot Code Section with Independent Lock Bits
• In-System Programming by On-chip Boot Program
• True Read-While-Write Operation
– Programming Lock for Software Security
•
Atmel QTouch® Library Support
– Capacitive Touch Buttons, Sliders and Wheels
– QTouch and QMatrix acquisition
– Up to 64 Sense Channels
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
•
•
JTAG (IEEE std. 1149.1 Compliant) Interface
– Boundary-scan Capabilities According to the JTAG Standard
– Extensive On-chip Debug Support
– Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
Peripheral Features
– Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode
– One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode
– Real Time Counter with Separate Oscillator
–
–
•
•
•
•
•
Six PWM Channels
8-channel 10-bit ADC
• Differential Mode with Selectable Gain at 1×, 10× or 200×
– One Byte-oriented 2-wire Serial Interface (Philips I2C compatible)
– Two Programmable Serial USART
– One Master/Slave SPI Serial Interface
– Programmable Watchdog Timer with Separate On-chip Oscillator
– On-chip Analog Comparator
– Interrupt and Wake-up on Pin Change
Special Microcontroller Features
– Power-on Reset and Programmable Brown-out Detection
– Internal Calibrated RC Oscillator
– External and Internal Interrupt Sources
– Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and
Extended Standby
I/O and Packages
– 32 Programmable I/O Lines
– 40-pin PDIP
– 44-lead TQFP
– 44-pad VQFN/QFN
Operating Voltage:
– 1.8 - 5.5V
Speed Grades
– 0 - 4MHz @ 1.8V - 5.5V
– 0 - 10MHz @ 2.7V - 5.5V
– 0 - 20MHz @ 4.5 - 5.5V
Power Consumption at 1MHz, 1.8V, 25°C
– Active Mode: 0.4mA
– Power-down Mode: 0.1μA
– Power-save Mode: 0.6μA (Including 32kHz RTC)
Note: 1. Refer to Data Retention
Related Links
Data Retention on page 12
Atmel ATmega644A [DATASHEET]
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
2
1.
Description
The Atmel® ATmega644A is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC
architecture. By executing powerful instructions in a single clock cycle, the ATmega644A achieves
throughputs close to 1MIPS per MHz. This empowers system designer to optimize the device for power
consumption versus processing speed.
The Atmel AVR® core combines a rich instruction set with 32 general purpose working registers. All the
32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers
to be accessed in a single instruction executed in one clock cycle. The resulting architecture is more code
efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers.
The ATmega644A provides the following features: 64Kbytes of In-System Programmable Flash with
Read-While-Write capabilities, 2Kbytes EEPROM, 4Kbytes SRAM, 32 general purpose I/O lines, 32
general purpose working registers, Real Time Counter (RTC), three flexible Timer/Counters with compare
modes and PWM, two serial programmable USARTs , one byte-oriented 2-wire Serial Interface (I2C), a 8channel 10-bit ADC with optional differential input stage with programmable gain, a programmable
Watchdog Timer with internal Oscillator, an SPI serial port, IEEE std. 1149.1 compliant JTAG test
interface, also used for accessing the On-chip Debug system and programming and six software
selectable power saving modes. The Idle mode stops the CPU while allowing the SRAM, Timer/Counters,
SPI port, and interrupt system to continue functioning. The Power-down mode saves the register contents
but freezes the Oscillator, disabling all other chip functions until the next interrupt or hardware reset. In
Power-save mode, the asynchronous timer continues to run, allowing the user to maintain a timer base
while the rest of the device is sleeping. The ADC Noise Reduction mode stops the CPU and all I/O
modules except asynchronous timer and ADC to minimize switching noise during ADC conversions. In
Standby mode, the crystal/resonator oscillator is running while the rest of the device is sleeping. This
allows very fast start-up combined with low power consumption. In Extended Standby mode, both the
main oscillator and the asynchronous timer continue to run.
Atmel offers the QTouch® library for embedding capacitive touch buttons, sliders and wheels functionality
into AVR microcontrollers. The patented charge-transfer signal acquisition offers robust sensing and
includes fully debounced reporting of touch keys and includes Adjacent Key Suppression® (AKS™)
technology for unambiguous detection of key events. The easy-to-use QTouch Suite toolchain allows you
to explore, develop and debug your own touch applications.
The device is manufactured using Atmel’s high density non-volatile memory technology. The On-chip ISP
Flash allows the program memory to be reprogrammed In-System through an SPI serial interface, by a
conventional nonvolatile memory programmer, or by an On-chip Boot program running on the AVR core.
The Boot program can use any interface to download the application program in the Application Flash
memory. Software in the Boot Flash section will continue to run while the Application Flash section is
updated, providing true Read-While-Write operation. By combining an 8-bit RISC CPU with In-System
Self-Programmable Flash on a monolithic chip, the Atmel ATmega644A is a powerful microcontroller that
provides a highly flexible and cost effective solution to many embedded control applications.
The ATmega644A is supported with a full suite of program and system development tools including: C
Compilers, Macro Assemblers, Program Debugger/Simulators, In-Circuit Emulators, and Evaluation kits.
Atmel ATmega644A [DATASHEET]
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
3
2.
Configuration Summary
The table below compares the device series of feature and pin compatible devices, providing a seamless
migration path.
Table 2-1. Configuration Summary and Device Comparison
Features
ATmega164A
ATmega324A
ATmega644A
ATmega1284
Pin Count
40/44/49
40/44/49
40/44
40/44
Flash (Bytes)
16K
32K
64K
128K
SRAM (Bytes)
1K
2K
4K
16K
EEPROM (Bytes)
512
1K
2K
4K
General Purpose
I/O Lines
32
32
32
32
SPI
1
1
1
1
TWI (I2C)
1
1
1
1
USART
2
2
2
2
10-bit 15ksps
10-bit 15ksps
10-bit 15ksps
10-bit 15ksps
ADC Channels
8
8
8
8
Analog Comparator
1
1
1
1
8-bit Timer/
Counters
2
2
2
2
16-bit Timer/
Counters
1
1
1
2
PWM channels
6
6
6
8
PDIP
PDIP
PDIP
PDIP
TQFP
TQFP
TQFP
TQFP
VQFN/QFN
VQFN/QFN
VQFN/QFN
VQFNQFN
DRQFN
DRQFN
VFBGA
VFBGA
ADC
Packages
Atmel ATmega644A [DATASHEET]
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
4
3.
Ordering Information
Speed [MHz](3)
Power Supply [V]
Ordering Code(2)
Package(1)
Operational Range
20
1.8 - 5.5
ATmega644A-AU
44A
Industrial
(-40°C to 85°C)
ATmega644A-AUR(4)
44A
ATmega644A-PU
40P6
ATmega644A-MU
44M1
ATmega644A-MUR(4)
44M1
Note: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for
detailed ordering information and minimum quantities.
2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances
(RoHS directive). Also Halide free and fully Green.
3. Refer to Speed Grades for Speed vs. VCC
4. Tape & Reel.
Package Type
40P6 40-pin, 0.600” Wide, Plastic Dual Inline Package (PDIP)
44A
44-lead, Thin (1.0mm) Plastic Quad Flat Package (TQFP)
44M1 44-pad, 7 × 7 × 1.0mm body, lead pitch 0.50mm, Thermally Enhanced Plastic Very Thin Quad Flat NoLead (VQFN)
Atmel ATmega644A [DATASHEET]
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
5
4.
Block Diagram
Figure 4-1. Block Diagram
SRAM
TCK
TMS
TDI
TDO
JTAG
CPU
OCD
Clock generation
TOSC1
32.768kHz
XOSC
TOSC2
XTAL1
16MHz LP
XOSC
XTAL2
VCC
RESET
GND
8MHz
Calib RC
128kHz int
osc
External
clock
Power
Supervision
POR/BOD &
RESET
ADC[7:0]
AREF
PCINT[31:0]
INT[2:0]
OC1A/B
T1
ICP1
OC2A
OC2B
NVM
programming
Power
management
and clock
control
Watchdog
Timer
ADC
EXTINT
TC 1
(16-bit)
TC 2
(8-bit async)
FLASH
D
A
T
A
B
U
S
EEPROM
EEPROMIF
I/O
PORTS
I
N
/
O
U
T
GPIOR[2:0]
D
A
T
A
B
U
S
TC 0
(8-bit)
SPI
AC
Internal
Reference
USART 0
RxD0
TxD0
XCK0
USART 1
RxD1
TxD1
XCK1
TWI
PA[7:0]
PB[7:0]
PC[7:0]
PD[7:0]
T0
OC0A
OC0B
MISO
MOSI
SCK
SS
AIN0
AIN1
ACO
ADCMUX
SDA
SCL
Atmel ATmega644A [DATASHEET]
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
6
5.
Pin Configurations
5.1.
Pinout
5.1.1.
PDIP
(PCINT8/XCK0/T0)
(ADC0/PCINT0)
(PCINT9/CLKO/T1)
(ADC1/PCINT1)
(PCINT10/INT2/AIN0)
(ADC2/PCINT2)
(PCINT11/OC0A/AIN1)
(ADC3/PCINT3)
(PCINT12/OC0B/
(ADC4/PCINT4)
(PCINT13/MOSI)
(ADC5/PCINT5)
(PCINT14/MISO)
(ADC6/PCINT6)
(PCINT15//SCK)
(ADC7/PCINT7)
(TOSC2/PCINT23)
(TOSC1/PCINT22)
(PCINT24/RXD0)
(TDI/PCINT21)
(PCINT25/TXD0)
(TDO/PCINT20)
(PCINT26/RXD1/INT0)
(TMS/PCINT19)
(PCINT27/TXD1/INT1)
(TCK/PCINT18)
(PCINT28/XCK1/OC1B)
(SDA/PCINT17)
(PCINT29/OC1A)
(SCL/PCINT16)
(PCINT30/OC2B/ICP)
(OC2A/PCINT31)
Power
Ground
Programming/debug
Digital
Analog
Crystal/Osc
Atmel ATmega644A [DATASHEET]
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
7
PB1 (T1/CLKO/PCINT9)
PB0 (XCK0/T0/PCINT8)
GND
VCC
PA0 (ADC0/PCINT0)
PA1 (ADC1/PCINT1)
PA2 (ADC2/PCINT2)
PA3 (ADC3/PCINT3)
41
40
39
38
37
36
35
34
Crystal/Osc
PB2 (AIN0/INT2/PCINT10)
Analog
42
Digital
PB3 (AIN1/OC0A/PCINT11)
Programming/debug
43
Ground
PB4 (SS/OC0B/PCINT12)
Power
44
TQFN and QFN
GND
XTAL2
7
27
AVCC
XTAL1
8
26
PC7 (TOSC2/PCINT23)
(PCINT24/RXD0) PD0
9
25
PC6 (TOSC1/PCINT22)
(PCINT25/TXD0) PD1
10
24
PC5 (TDI/PCINT21)
(PCINT26/RXD1/INT0) PD2
11
23
PC4 (TDO/PCINT20)
22
28
(PCINT19/TMS) PC3
6
21
GND
(PCINT18/TCK) PC2
AREF
20
29
(PCINT17/SDA) PC1
5
19
VCC
(PCINT16/SCL) PC0
PA7 (ADC7/PCINT7)
18
30
GND
4
17
RESET
VCC
PA6 (ADC6/PCINT6)
16
31
(PCINT31/OC2A) PD7
3
15
(PCINT15/SCK) PB7
(PCINT30/OC2B/ICP1) PD6
PA5 (ADC5/PCINT5)
14
(PCINT14/MISO) PB6
32
(PCINT29/OC1A) PD5
PA4 (ADC4/PCINT4)
2
13
33
(PCINT28/XCK1/OC1B) PD4
1
12
(PCINT13/MOSI) PB5
(PCINT27/TXD1/INT1) PD3
5.1.2.
5.2.
Pin Descriptions
5.2.1.
VCC
Digital supply voltage.
5.2.2.
GND
Ground.
5.2.3.
Port A (PA[7:0])
This port serves as analog inputs to the Analog-to-digital Converter.
Atmel ATmega644A [DATASHEET]
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
8
This is an 8-bit, bi-directional I/O port with internal pull-up resistors, individually selectable for each bit.
The output buffers have symmetrical drive characteristics, with both high sink and source capability. As
inputs, the port pins that are externally pulled low will source current if pull-up resistors are activated. Port
pins are tri-stated when a reset condition becomes active, even if the clock is not running.
5.2.4.
Port B (PB[7:0])
This is an 8-bit, bi-directional I/O port with internal pull-up resistors, individually selectable for each bit.
The output buffers have symmetrical drive characteristics, with both high sink and source capability. As
inputs, the port pins that are externally pulled low will source current if pull-up resistors are activated. Port
pins are tri-stated when a reset condition becomes active, even if the clock is not running.
This port also serves the functions of various special features.
5.2.5.
Port C (PC[7:0])
This is an 8-bit, bi-directional I/O port with internal pull-up resistors, individually selectable for each bit.
The output buffers have symmetrical drive characteristics, with both high sink and source capability. As
inputs, the port pins that are externally pulled low will source current if pull-up resistors are activated. Port
pins are tri-stated when a reset condition becomes active, even if the clock is not running.
This port also serves the functions of the JTAG interface, along with special features.
5.2.6.
Port D (PD[7:0])
This is an 8-bit, bi-directional I/O port with internal pull-up resistors, individually selectable for each bit.
The output buffers have symmetrical drive characteristics, with both high sink and source capability. As
inputs, the port pins that are externally pulled low will source current if pull-up resistors are activated. Port
pins are tri-stated when a reset condition becomes active, even if the clock is not running.
This port also serves the functions of various special features.
5.2.7.
RESET
Reset input. A low level on this pin for longer than the minimum pulse length will generate a reset, even if
the clock is not running. Shorter pulses are not guaranteed to generate a reset.
5.2.8.
XTAL1
Input to the inverting Oscillator amplifier and input to the internal clock operating circuit.
5.2.9.
XTAL2
Output from the inverting Oscillator amplifier.
5.2.10.
AVCC
AVCC is the supply voltage pin for Port A and the Analog-to-digital Converter. It should be externally
connected to VCC, even if the ADC is not used. If the ADC is used, it should be connected to VCC through
a low-pass filter.
5.2.11.
AREF
This is the analog reference pin for the Analog-to-digital Converter.
Atmel ATmega644A [DATASHEET]
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
9
6.
I/O Multiplexing
Each pin is by default controlled by the PORT as a general purpose I/O and alternatively it can be
assigned to one of the peripheral functions.
The following table describes the peripheral signals multiplexed to the PORT I/O pins.
Table 6-1. PORT Function Multiplexing
32-pin
40-pin
TQFP/
PIPD
QFN/
Pin #
MLF Pin
#
DRQFN
Pin#
VFBGA
Pin#
PAD
EXTINT
PCINT
ADC/AC OSC
T/C # 0
T/C # 1
USART
I2C
SPI
JTAG
1
6
A1
B2
PB[5]
PCINT1
3
MOSI
2
7
B1
B1
PB[6]
PCINT1
4
MISO
3
8
A2
C3
PB[7]
PCINT1
5
SCK
4
9
B2
C2
RESET
5
10
A3
A5
VCC
6
11
B3
A1
GND
7
12
A4
D2
XTAL2
8
13
B4
E1
XTAL1
9
14
A5
D3
PD[0]
PCINT2
4
RxD0
10
15
B5
E2
PD[1]
PCINT2
5
TxD0
11
16
A6
F1
PD[2]
INT0
PCINT2
6
RxD1
12
17
A7
F2
PD[3]
INT1
PCINT2
7
TXD1
13
18
B6
G2
PD[4]
PCINT2
8
OC1B
14
19
A8
E3
PD[5]
PCINT2
9
OC1A
15
20
B7
F3
PD[6]
PCINT3
0
OC2B
16
21
A9
E4
PD[7]
PCINT3
1
OC2A
17
-
B8
C1
VCC
RxD2
MISO1
18
-
A10
A4
GND
TxD2
MOSI1
19
22
B9
F4
PC[0]
PCINT1
6
SCL
20
23
A11
G5
PC[1]
PCINT1
7
SDA
21
24
B10
F5
PC[2]
PCINT1
8
TCK
22
25
A12
G6
PC[3]
PCINT1
9
TMS
23
26
A13
F6
PC[4]
PCINT2
0
TDO
XCK1
ICP1
Atmel ATmega644A [DATASHEET]
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
10
32-pin
40-pin
TQFP/
PIPD
QFN/
Pin #
MLF Pin
#
DRQFN
Pin#
VFBGA
Pin#
PAD
EXTINT
PCINT
ADC/AC OSC
T/C # 0
T/C # 1
USART
I2C
24
27
B11
E5
PC[5]
PCINT2
1
25
28
A14
F7
PC[6]
PCINT2
2
TOSC1
26
29
B12
E6
PC[7]
PCINT2
3
TOSC2
27
30
A15
E7
AVCC
28
31
B13
D1
GND
29
32
A16
C7
AREF
30
33
B14
D6
PA[7]
PCINT7
ADC7
31
34
A17
C6
PA[6]
PCINT6
ADC6
32
35
B15
B7
PA[5]
PCINT5
ADC5
33
36
A18
D5
PA[4]
PCINT4
ADC4
34
37
A19
B6
PA[3]
PCINT3
ADC3
35
38
B16
A6
PA[2]
PCINT2
ADC2
36
39
A20
C5
PA[1]
PCINT1
ADC1
37
40
B17
B5
PA[0]
PCINT0
ADC0
38
-
A21
G3
VCC
SDA1
39
-
B18
A7
GND
SCL1
40
1
A22
B4
PB[0]
PCINT8
41
2
B19
C4
PB[1]
PCINT9
42
3
A23
A3
PB[2]
43
4
B20
B3
44
5
A24
-
-
-
SPI
JTAG
TDI
AREF
INT2
T0
XCK0
CLKO
PCINT1
0
AIN0
PB[3]
PCINT1
1
AIN1
A2
PB[4]
PCINT1
2
-
D4
GND
-
-
D7
GND
-
-
G1
GND
-
-
-
G4
GND
-
-
-
G7
GND
T1
OC0A
OC0B
SS
Atmel ATmega644A [DATASHEET]
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
11
7.
General Information
7.1.
Resources
A comprehensive set of development tools, application notes, and datasheets are available for download
on http://www.atmel.com/avr.
7.2.
Data Retention
Reliability Qualification results show that the projected data retention failure rate is much less than 1 PPM
over 20 years at 85°C or 100 years at 25°C.
7.3.
About Code Examples
This documentation contains simple code examples that briefly show how to use various parts of the
device. These code examples assume that the part specific header file is included before compilation. Be
aware that not all C compiler vendors include bit definitions in the header files and interrupt handling in C
is compiler dependent. Confirm with the C compiler documentation for more details.
For I/O Registers located in extended I/O map, “IN”, “OUT”, “SBIS”, “SBIC”, “CBI”, and “SBI” instructions
must be replaced with instructions that allow access to extended I/O. Typically “LDS” and “STS”
combined with “SBRS”, “SBRC”, “SBR”, and “CBR”.
7.4.
Capacitive Touch Sensing
7.4.1.
QTouch Library
®
®
The Atmel QTouch Library provides a simple to use solution to realize touch sensitive interfaces on
®
most Atmel AVR microcontrollers. The QTouch Library includes support for the Atmel QTouch and Atmel
®
QMatrix acquisition methods.
Touch sensing can be added to any application by linking the appropriate Atmel QTouch Library for the
AVR Microcontroller. This is done by using a simple set of APIs to define the touch channels and sensors,
and then calling the touch sensing API’s to retrieve the channel information and determine the touch
sensor states.
The QTouch Library is FREE and downloadable from the Atmel website at the following location: http://
www.atmel.com/technologies/touch/. For implementation details and other information, refer to the Atmel
QTouch Library User Guide - also available for download from the Atmel website.
Atmel ATmega644A [DATASHEET]
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
12
8.
Packaging Information
8.1.
40-pin PDIP
D
PIN
1
E1
A
SEATING PLANE
A1
L
B
B1
e
E
0º ~ 15º
C
COMMON DIMENSIONS
(Unit of Measure = mm)
REF
eB
Notes:
1. This package conforms to JEDEC reference MS-011, Variation AC.
2. Dimensions D and E1 do not include mold Flash or Protrusion.
Mold Flash or Protrusion shall not exceed 0.25mm (0.010").
SYMBOL
MIN
NOM
MAX
A
–
–
4.826
A1
0.381
–
–
D
52.070
–
52.578
E
15.240
–
15.875
E1
13.462
–
13.970
B
0.356
–
0.559
B1
1.041
–
1.651
L
3.048
–
3.556
C
0.203
–
0.381
eB
15.494
–
17.526
e
NOTE
Note 2
Note 2
2.540 TYP
13/02/2014
40P6, 40-lead (0.600"/15.24mm Wide) Plastic Dual
Inline Package (PDIP)
C
40P6
Atmel ATmega644A [DATASHEET]
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
13
8.2.
44-pin TQFP
P IN 1 IDENTIFIER
P IN 1
B
e
E1
E
A1
A2
D1
D
C
0°~7°
L
A
COMMON DIMENS IONS
(Unit of Me a s ure = mm)
Note s :
1. This pa cka ge conforms to J EDEC re fe re nce MS -026, Va ria tion ACB.
2. Dime ns ions D1 a nd E1 do not include mold protrus ion. Allowa ble
protrus ion is 0.25mm pe r s ide . Dime ns ions D1 a nd E1 a re ma ximum
pla s tic body s ize dime ns ions including mold mis ma tch.
3. Le a d copla na rity is 0.10mm ma ximum.
S YMBOL
MIN
NOM
MAX
A
–
–
1.20
A1
0.05
–
0.15
A2
0.95
1.00
1.05
D
11.75
12.00
12.25
D1
9.90
10.00
10.10
E
11.75
12.00
12.25
E1
9.90
10.00
10.10
B
0.30
0.37
0.45
C
0.09
(0.17)
0.20
L
0.45
0.60
0.75
e
NOTE
Note 2
Note 2
0.80 TYP
06/02/2014
44A, 44-le a d, 10 x 10mm body s ize , 1.0mm body thickne s s ,
0.8 mm le a d pitch, thin profile pla s tic qua d fla t pa cka ge (TQFP )
44A
Atmel ATmega644A [DATASHEET]
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
C
14
8.3.
44-pin VQFN
D
Marked Pin# 1 I D
E
SE ATING PLANE
A1
TOP VIEW
A3
A
K
L
Pin #1 Co rne r
D2
1
2
3
Option A
SIDE VIEW
Pin #1
Triangl e
COMMON DIMENSIONS
(Unit of Measure = mm)
MIN
NOM
MAX
A
0.80
0.90
1.00
A1
–
0.02
0.05
SYMBOL
E2
Option B
K
Option C
b
e
Pin #1
Cham fe r
(C 0.30)
Pin #1
Notch
(0.20 R)
BOTTOM VIEW
A3
0.20 REF
b
0.18
0.23
D
6.90
7.00
7.10
D2
5.00
5.20
5.40
E
6.90
7.00
7.10
E2
5.00
5.20
5.40
e
Note : JEDEC Standard MO-220, Fig
. 1 (S AW Singulation) VKKD-3 .
NOTE
0.30
0.50 BSC
L
0.59
0.64
0.69
K
0.20
0.26
0.41
9/26/08
Package Drawing Contact:
[email protected]
TITLE
44M1, 44-pad, 7 x 7 x 1.0mm body, lead
pitch 0.50mm, 5.20mm exposed pad, thermally
enhanced plastic very thin quad flat no
lead package (VQFN)
GPC
ZWS
DRAWING NO.
REV.
44M1
H
Atmel ATmega644A [DATASHEET]
Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
15
Atmel Corporation
©
1600 Technology Drive, San Jose, CA 95110 USA
T: (+1)(408) 441.0311
F: (+1)(408) 436.4200
|
www.atmel.com
2016 Atmel Corporation. / Rev.: Atmel-42716A-ATmega644A_Datasheet_Summary-05/2016
®
®
®
Atmel , Atmel logo and combinations thereof, Enabling Unlimited Possibilities , AVR , and others are registered trademarks or trademarks of Atmel Corporation in
U.S. and other countries. Other terms and product names may be trademarks of others.
DISCLAIMER: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any
intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN THE ATMEL TERMS AND
CONDITIONS OF SALES LOCATED ON THE ATMEL WEBSITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED
OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS AND PROFITS, BUSINESS
INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED
OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this
document and reserves the right to make changes to specifications and products descriptions at any time without notice. Atmel does not make any commitment to
update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive
applications. Atmel products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life.
SAFETY-CRITICAL, MILITARY, AND AUTOMOTIVE APPLICATIONS DISCLAIMER: Atmel products are not designed for and will not be used in connection with any
applications where the failure of such products would reasonably be expected to result in significant personal injury or death (“Safety-Critical Applications”) without
an Atmel officer's specific written consent. Safety-Critical Applications include, without limitation, life support devices and systems, equipment or systems for the
operation of nuclear facilities and weapons systems. Atmel products are not designed nor intended for use in military or aerospace applications or environments
unless specifically designated by Atmel as military-grade. Atmel products are not designed nor intended for use in automotive applications unless specifically
designated by Atmel as automotive-grade.