ATmega640/1280/1281/2560/2561 - Summary

Atmel ATmega640/V-1280/V-1281/V-2560/V-2561/V
8-bit Atmel Microcontroller with 16/32/64KB In-System Programmable Flash
SUMMARY
Features
•
•
•
High Performance, Low Power Atmel® AVR® 8-Bit Microcontroller
Advanced RISC Architecture
– 135 Powerful Instructions – Most Single Clock Cycle Execution
– 32 × 8 General Purpose Working Registers
– Fully Static Operation
– Up to 16 MIPS Throughput at 16MHz
– On-Chip 2-cycle Multiplier
High Endurance Non-volatile Memory Segments
– 64K/128K/256KBytes of In-System Self-Programmable Flash
– 4Kbytes EEPROM
– 8Kbytes Internal SRAM
– Write/Erase Cycles:10,000 Flash/100,000 EEPROM
– Data retention: 20 years at 85C/ 100 years at 25C
– 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
•
• Endurance: Up to 64Kbytes Optional External Memory Space
Atmel® QTouch® library support
– Capacitive touch buttons, sliders and wheels
– QTouch and QMatrix acquisition
– Up to 64 sense channels
•
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
–
–
–
–
–
–
–
–
–
–
–
–
–
•
Special Microcontroller Features
–
–
–
–
•
Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode
Four 16-bit Timer/Counter with Separate Prescaler, Compare- and Capture Mode
Real Time Counter with Separate Oscillator
Four 8-bit PWM Channels
Six/Twelve PWM Channels with Programmable Resolution from 2 to 16 Bits
(ATmega1281/2561, ATmega640/1280/2560)
Output Compare Modulator
8/16-channel, 10-bit ADC (ATmega1281/2561, ATmega640/1280/2560)
Two/Four Programmable Serial USART (ATmega1281/2561, ATmega640/1280/2560)
Master/Slave SPI Serial Interface
Byte Oriented 2-wire Serial Interface
Programmable Watchdog Timer with Separate On-chip Oscillator
On-chip Analog Comparator
Interrupt and Wake-up on Pin Change
Power-on Reset and Programmable Brown-out Detection
Internal Calibrated 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
–
–
–
–
54/86 Programmable I/O Lines (ATmega1281/2561, ATmega640/1280/2560)
64-pad QFN/MLF, 64-lead TQFP (ATmega1281/2561)
100-lead TQFP, 100-ball CBGA (ATmega640/1280/2560)
RoHS/Fully Green
•
Temperature Range:
•
Ultra-Low Power Consumption
– -40C to 85C Industrial
– Active Mode: 1MHz, 1.8V: 500µA
– Power-down Mode: 0.1µA at 1.8V
•
Speed Grade:
– ATmega640V/ATmega1280V/ATmega1281V:
• 0 - 4MHz @ 1.8V - 5.5V, 0 - 8MHz @ 2.7V - 5.5V
– ATmega2560V/ATmega2561V:
• 0 - 2MHz @ 1.8V - 5.5V, 0 - 8MHz @ 2.7V - 5.5V
– ATmega640/ATmega1280/ATmega1281:
• 0 - 8MHz @ 2.7V - 5.5V, 0 - 16MHz @ 4.5V - 5.5V
– ATmega2560/ATmega2561:
• 0 - 16MHz @ 4.5V - 5.5V
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1. Pin Configurations
81
80
PA1 (AD1)
82
PA2 (AD2)
83
PJ7
84
PA0 (AD0)
85
GND
86
VCC
87
PK7 (ADC15/PCINT23)
88
PK5 (ADC13/PCINT21)
89
PK6 (ADC14/PCINT22)
90
PK3 (ADC11/PCINT19)
91
PK4 (ADC12/PCINT20)
92
PK1 (ADC9/PCINT17)
93
PK2 (ADC10/PCINT18)
PK0 (ADC8/PCINT16)
94
PF7 (ADC7/TDI)
95
PF6 (ADC6/TDO)
96
PF4 (ADC4/TCK)
97
PF5 (ADC5/TMS)
PF1 (ADC1)
98
PF2 (ADC2)
PF0 (ADC0)
100 99
PF3 (ADC3)
GND
AREF
TQFP-pinout ATmega640/1280/2560
AVCC
Figure 1-1.
79
78
77
76
(OC0B) PG5
1
75
PA3 (AD3)
(RXD0/PCINT8) PE0
2
74
PA4 (AD4)
INDEX CORNER
(TXD0) PE1
3
73
PA5 (AD5)
(XCK0/AIN0) PE2
4
72
PA6 (AD6)
(OC3A/AIN1) PE3
5
71
PA7 (AD7)
(OC3B/INT4) PE4
6
70
PG2 (ALE)
(OC3C/INT5) PE5
7
69
PJ6 (PCINT15)
(T3/INT6) PE6
8
68
PJ5 (PCINT14)
(CLKO/ICP3/INT7) PE7
9
67
PJ4 (PCINT13)
VCC
10
66
PJ3 (PCINT12)
GND
11
65
PJ2 (XCK3/PCINT11)
(RXD2) PH0
12
64
PJ1 (TXD3/PCINT10)
(TXD2) PH1
13
63
PJ0 (RXD3/PCINT9)
(XCK2) PH2
14
62
GND
(OC4A) PH3
15
61
VCC
(OC4B) PH4
16
60
PC7 (A15)
(OC4C) PH5
17
59
PC6 (A14)
(OC2B) PH6
18
58
PC5 (A13)
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
(T1) PD6
31
(T0) PD7
30
(ICP1) PD4
29
(XCK1) PD5
28
(TXD1/INT3) PD3
27
(RXD1/INT2) PD2
26
(SDA/INT1) PD1
PG0 (WR)
PL7
51
(SCL/INT0) PD0
25
PL6
(OC1B/PCINT6) PB6
(OC5C) PL5
PG1 (RD)
(OC5A) PL3
PC0 (A8)
52
(OC5B) PL4
53
24
(T5) PL2
23
(OC1A/PCINT5) PB5
(ICP5) PL1
(OC2A/PCINT4) PB4
(ICP4) PL0
PC1 (A9)
XTAL2
PC2 (A10)
54
XTAL1
55
22
VCC
21
(MISO/PCINT3) PB3
GND
(MOSI/PCINT2) PB2
RESET
PC3 (A11)
(TOSC1) PG4
PC4 (A12)
56
(T4) PH7
57
20
(TOSC2) PG3
19
(OC0A/OC1C/PCINT7) PB7
(SS/PCINT0) PB0
(SCK/PCINT1) PB1
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
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Figure 1-2.
CBGA-pinout ATmega640/1280/2560
Top view
1
2
3
4
5
6
7
Bottom view
8
9
10
10
9
8
7
6
5
4
3
2
1
A
A
B
B
C
C
D
D
E
E
F
F
G
G
H
H
J
J
K
K
Table 1-1.
CBGA-pinout ATmega640/1280/2560
1
2
3
4
5
6
7
8
9
10
A
GND
AREF
PF0
PF2
PF5
PK0
PK3
PK6
GND
VCC
B
AVCC
PG5
PF1
PF3
PF6
PK1
PK4
PK7
PA0
PA2
C
PE2
PE0
PE1
PF4
PF7
PK2
PK5
PJ7
PA1
PA3
D
PE3
PE4
PE5
PE6
PH2
PA4
PA5
PA6
PA7
PG2
E
PE7
PH0
PH1
PH3
PH5
PJ6
PJ5
PJ4
PJ3
PJ2
F
VCC
PH4
PH6
PB0
PL4
PD1
PJ1
PJ0
PC7
GND
G
GND
PB1
PB2
PB5
PL2
PD0
PD5
PC5
PC6
VCC
H
PB3
PB4
RESET
PL1
PL3
PL7
PD4
PC4
PC3
PC2
J
PH7
PG3
PB6
PL0
XTAL2
PL6
PD3
PC1
PC0
PG1
K
PB7
PG4
VCC
GND
XTAL1
PL5
PD2
PD6
PD7
PG0
Note:
The functions for each pin is the same as for the 100 pin packages shown in Figure 1-1 on page 2.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
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(OC0B) PG5
1
(RXD0/PCINT8/PDI) PE0
2
AVCC
GND
AREF
PF0 (ADC0)
PF1 (ADC1)
PF2 (ADC2)
PF3 (ADC3)
PF4 (ADC4/TCK)
PF5 (ADC5/TMS)
PF6 (ADC6/TDO)
PF7 (ADC7/TDI)
GND
VCC
PA0 (AD0)
PA1 (AD1)
PA2 (AD2)
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
Pinout ATmega1281/2561
64
Figure 1-3.
INDEX CORNER
48
PA3 (AD3)
47
PA4 (AD4)
46
PA5 (AD5)
38
PC3 (A11)
(MOSI/ PCINT2) PB2
12
37
PC2 (A10)
(MISO/ PCINT3) PB3
13
36
PC1 (A9)
(OC2A/ PCINT4) PB4
14
35
PC0 (A8)
(OC1A/PCINT5) PB5
15
34
PG1 (RD)
(OC1B/PCINT6) PB6
16
33
PG0 (WR)
Note:
32
11
(T0) PD7
(SCK/ PCINT1) PB1
31
PC4 (A12)
(T1) PD6
39
30
10
(XCK1) PD5
(SS/PCINT0) PB0
29
PC5 (A13)
(ICP1) PD4
40
28
9
(TXD1/INT3) PD3
(ICP3/CLKO/INT7) PE7
27
PC6 (A14)
(RXD1/INT2) PD2
41
26
8
(SDA/INT1) PD1
(T3/INT6) PE6
25
PC7 (A15)
(SCL/INT0) PD0
42
24
7
XTAL1
(OC3C/INT5) PE5
23
PG2 (ALE)
XTAL2
43
22
6
GND
(OC3B/INT4) PE4
21
PA7 (AD7)
VCC
44
20
5
RESET
(OC3A/AIN1) PE3
19
PA6 (AD6)
(TOSC1) PG4
45
18
4
(TOSC2) PG3
(XCK0/AIN0) PE2
17
3
(OC0A/OC1C/PCINT7) PB7
(TXD0/PDO) PE1
The large center pad underneath the QFN/MLF package is made of metal and internally connected to GND. It should
be soldered or glued to the board to ensure good mechanical stability. If the center pad is left unconnected, the package might loosen from the board.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
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2. Overview
The ATmega640/1280/1281/2560/2561 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
ATmega640/1280/1281/2560/2561 achieves throughputs approaching 1 MIPS per MHz allowing the system
designer to optimize power consumption versus processing speed.
2.1
Block Diagram
Figure 2-1.
Block Diagram
PF7..0
PK7..0
PORT F (8)
PORT K (8)
PJ7..0
PE7..0
VCC
Power
Supervision
POR/ BOD &
RESET
RESET
PORT J (8)
PORT E (8)
Watchdog
Timer
GND
Watchdog
Oscillator
Analog
Comparator
JTAG
A/D
Converter
EEPROM
Internal
Bandgap reference
USART 0
XTAL1
Oscillator
Circuits /
Clock
Generation
16 bit T/C 3
USART 3
16 bit T/C 5
XTAL2
CPU
PORT A (8)
PA7..0
16 bit T/C 4
USART 1
PG5..0
PORT G (6)
XRAM
PC7..0
PORT C (8)
TWI
FLASH
SPI
SRAM
16 bit T/C 1
8 bit T/C 0
USART 2
8 bit T/C 2
NOTE:
Shaded parts only available
in the 100-pin version.
Complete functionality for
the ADC, T/C4, and T/C5 only
available in the 100-pin version.
®
PORT D (8)
PORT B (8)
PORT H (8)
PORT L (8)
PD7..0
PB7..0
PH7..0
PL7..0
®
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
one 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.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
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The ATmega640/1280/1281/2560/2561 provides the following features: 64K/128K/256K bytes of In-System Programmable Flash with Read-While-Write capabilities, 4Kbytes EEPROM, 8Kbytes SRAM, 54/86 general purpose
I/O lines, 32 general purpose working registers, Real Time Counter (RTC), six flexible Timer/Counters with compare modes and PWM, four USARTs, a byte oriented 2-wire Serial Interface, a 16-channel, 10-bit ADC with
optional differential input stage with programmable gain, 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 offersrobust 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 the Atmel high-density nonvolatile 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
ATmega640/1280/1281/2560/2561 is a powerful microcontroller that provides a highly flexible and cost effective
solution to many embedded control applications.
The ATmega640/1280/1281/2560/2561 AVR 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.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
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2.2
Comparison Between ATmega1281/2561 and ATmega640/1280/2560
Each device in the ATmega640/1280/1281/2560/2561 family differs only in memory size and number of pins. Table
2-1 summarizes the different configurations for the six devices.
Table 2-1.
2.3
2.3.1
Configuration Summary
Device
Flash
EEPROM
RAM
General
Purpose I/O pins
16 bits resolution
PWM channels
Serial
USARTs
ADC
Channels
ATmega640
64KB
4KB
8KB
86
12
4
16
ATmega1280
128KB
4KB
8KB
86
12
4
16
ATmega1281
128KB
4KB
8KB
54
6
2
8
ATmega2560
256KB
4KB
8KB
86
12
4
16
ATmega2561
256KB
4KB
8KB
54
6
2
8
Pin Descriptions
VCC
Digital supply voltage.
2.3.2
GND
Ground.
2.3.3
Port A (PA7..PA0)
Port A is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port A output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port A pins that are
externally pulled low will source current if the pull-up resistors are activated. The Port A pins are tri-stated when a
reset condition becomes active, even if the clock is not running.
Port A also serves the functions of various special features of the ATmega640/1280/1281/2560/2561 as listed on
page 75.
2.3.4
Port B (PB7..PB0)
Port B is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port B output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port B pins that are
externally pulled low will source current if the pull-up resistors are activated. The Port B pins are tri-stated when a
reset condition becomes active, even if the clock is not running.
Port B has better driving capabilities than the other ports.
Port B also serves the functions of various special features of the ATmega640/1280/1281/2560/2561 as listed on
page 76.
2.3.5
Port C (PC7..PC0)
Port C is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port C output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port C pins that are
externally pulled low will source current if the pull-up resistors are activated. The Port C pins are tri-stated when a
reset condition becomes active, even if the clock is not running.
Port C also serves the functions of special features of the ATmega640/1280/1281/2560/2561 as listed on page 79.
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2.3.6
Port D (PD7..PD0)
Port D is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port D output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port D pins that are
externally pulled low will source current if the pull-up resistors are activated. The Port D pins are tri-stated when a
reset condition becomes active, even if the clock is not running.
Port D also serves the functions of various special features of the ATmega640/1280/1281/2560/2561 as listed on
page 80.
2.3.7
Port E (PE7..PE0)
Port E is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port E output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port E pins that are
externally pulled low will source current if the pull-up resistors are activated. The Port E pins are tri-stated when a
reset condition becomes active, even if the clock is not running.
Port E also serves the functions of various special features of the ATmega640/1280/1281/2560/2561 as listed on
page 82.
2.3.8
Port F (PF7..PF0)
Port F serves as analog inputs to the A/D Converter.
Port F also serves as an 8-bit bi-directional I/O port, if the A/D Converter is not used. Port pins can provide internal
pull-up resistors (selected for each bit). The Port F output buffers have symmetrical drive characteristics with both
high sink and source capability. As inputs, Port F pins that are externally pulled low will source current if the pull-up
resistors are activated. The Port F pins are tri-stated when a reset condition becomes active, even if the clock is not
running. If the JTAG interface is enabled, the pull-up resistors on pins PF7(TDI), PF5(TMS), and PF4(TCK) will be
activated even if a reset occurs.
Port F also serves the functions of the JTAG interface.
2.3.9
Port G (PG5..PG0)
Port G is a 6-bit I/O port with internal pull-up resistors (selected for each bit). The Port G output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port G pins that are externally
pulled low will source current if the pull-up resistors are activated. The Port G pins are tri-stated when a reset condition becomes active, even if the clock is not running.
Port G also serves the functions of various special features of the ATmega640/1280/1281/2560/2561 as listed on
page 86.
2.3.10
Port H (PH7..PH0)
Port H is a 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port H output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port H pins that are
externally pulled low will source current if the pull-up resistors are activated. The Port H pins are tri-stated when a
reset condition becomes active, even if the clock is not running.
Port H also serves the functions of various special features of the ATmega640/1280/2560 as listed on page 88.
2.3.11
Port J (PJ7..PJ0)
Port J is a 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port J output buffers
have symmetrical drive characteristics with both high sink and source capability. As inputs, Port J pins that are
externally pulled low will source current if the pull-up resistors are activated. The Port J pins are tri-stated when a
reset condition becomes active, even if the clock is not running. Port J also serves the functions of various special
features of the ATmega640/1280/2560 as listed on page 90.
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2.3.12
Port K (PK7..PK0)
Port K serves as analog inputs to the A/D Converter.
Port K is a 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port K output buffers
have symmetrical drive characteristics with both high sink and source capability. As inputs, Port K pins that are
externally pulled low will source current if the pull-up resistors are activated. The Port K pins are tri-stated when a
reset condition becomes active, even if the clock is not running.
Port K also serves the functions of various special features of the ATmega640/1280/2560 as listed on page 92.
2.3.13
Port L (PL7..PL0)
Port L is a 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port L output buffers
have symmetrical drive characteristics with both high sink and source capability. As inputs, Port L pins that are
externally pulled low will source current if the pull-up resistors are activated. The Port L pins are tri-stated when a
reset condition becomes active, even if the clock is not running.
Port L also serves the functions of various special features of the ATmega640/1280/2560 as listed on page 94.
2.3.14
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. The minimum pulse length is given in “System and Reset Characteristics” on page 360. Shorter
pulses are not guaranteed to generate a reset.
2.3.15
XTAL1
Input to the inverting Oscillator amplifier and input to the internal clock operating circuit.
2.3.16
XTAL2
Output from the inverting Oscillator amplifier.
2.3.17
AVCC
AVCC is the supply voltage pin for Port F and the A/D 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.
2.3.18
AREF
This is the analog reference pin for the A/D Converter.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
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3. Resources
A comprehensive set of development tools and application notes, and datasheets are available for download on
http://www.atmel.com/avr.
4. About Code Examples
This documentation contains simple code examples that briefly show how to use various parts of the device. 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.
These code examples assume that the part specific header file is included before compilation. 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".
5. 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.
6. Capacitive touch sensing
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 QTouch and 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:
www.atmel.com/qtouchlibrary. For implementation details and other information, refer to the Atmel QTouch Library
User Guide - also available for download from the Atmel website.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
10
7. Register Summary
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(0x1FF)
Reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
...
Reserved
(0x13F)
Reserved
(0x13E)
Reserved
(0x13D)
Reserved
(0x13C)
Reserved
(0x13B)
Reserved
(0x13A)
Reserved
(0x139)
Reserved
(0x138)
Reserved
(0x137)
Reserved
(0x136)
UDR3
(0x135)
UBRR3H
USART3 I/O Data Register
(0x134)
UBRR3L
(0x133)
Reserved
-
-
(0x132)
UCSR3C
UMSEL31
(0x131)
UCSR3B
RXCIE3
-
page 218
USART3 Baud Rate Register High Byte
page 222
USART3 Baud Rate Register Low Byte
-
-
-
UMSEL30
UPM31
UPM30
TXCIE3
UDRIE3
RXEN3
Page
page 222
-
-
-
USBS3
UCSZ31
UCSZ30
UCPOL3
page 235
TXEN3
UCSZ32
RXB83
TXB83
page 234
page 233
(0x130)
UCSR3A
RXC3
TXC3
UDRE3
FE3
DOR3
UPE3
U2X3
MPCM3
(0x12F)
Reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
(0x12E)
Reserved
(0x12D)
OCR5CH
Timer/Counter5 - Output Compare Register C High Byte
page 160
(0x12C)
OCR5CL
Timer/Counter5 - Output Compare Register C Low Byte
page 160
(0x12B)
OCR5BH
Timer/Counter5 - Output Compare Register B High Byte
page 160
(0x12A)
OCR5BL
Timer/Counter5 - Output Compare Register B Low Byte
page 160
(0x129)
OCR5AH
Timer/Counter5 - Output Compare Register A High Byte
page 160
(0x128)
OCR5AL
Timer/Counter5 - Output Compare Register A Low Byte
page 160
(0x127)
ICR5H
Timer/Counter5 - Input Capture Register High Byte
page 161
(0x126)
ICR5L
Timer/Counter5 - Input Capture Register Low Byte
page 161
(0x125)
TCNT5H
Timer/Counter5 - Counter Register High Byte
page 158
(0x124)
TCNT5L
(0x123)
Reserved
-
-
-
Timer/Counter5 - Counter Register Low Byte
-
-
page 158
-
-
-
(0x122)
TCCR5C
FOC5A
FOC5B
FOC5C
-
-
-
-
-
page 157
(0x121)
TCCR5B
ICNC5
ICES5
-
WGM53
WGM52
CS52
CS51
CS50
page 156
(0x120)
TCCR5A
COM5A1
COM5A0
COM5B1
COM5B0
COM5C1
COM5C0
WGM51
WGM50
page 154
(0x11F)
Reserved
-
-
-
-
-
-
-
-
(0x11E)
Reserved
-
-
-
-
-
-
-
-
(0x11D)
Reserved
-
-
-
-
-
-
-
-
(0x11C)
Reserved
-
-
-
-
-
-
-
-
(0x11B)
Reserved
-
-
-
-
-
-
-
-
(0x11A)
Reserved
-
-
-
-
-
-
-
-
(0x119)
Reserved
-
-
-
-
-
-
-
-
(0x118)
Reserved
-
-
-
-
-
-
-
-
(0x117)
Reserved
-
-
-
-
-
-
-
-
(0x116)
Reserved
-
-
-
-
-
-
-
-
(0x115)
Reserved
-
-
-
-
-
-
-
-
(0x114)
Reserved
-
-
-
-
-
-
-
-
(0x113)
Reserved
-
-
-
-
-
-
-
-
(0x112)
Reserved
-
-
-
-
-
-
-
-
(0x111)
Reserved
-
-
-
-
-
-
-
-
(0x110)
Reserved
-
-
-
-
-
-
-
-
(0x10F)
Reserved
-
-
-
-
-
-
-
-
(0x10E)
Reserved
-
-
-
-
-
-
-
-
(0x10D)
Reserved
-
-
-
-
-
-
-
-
(0x10C)
Reserved
-
-
-
-
-
-
-
-
(0x10B)
PORTL
PORTL7
PORTL6
PORTL5
PORTL4
PORTL3
PORTL2
PORTL1
PORTL0
(0x10A)
DDRL
DDL7
DDL6
DDL5
DDL4
DDL3
DDL2
DDL1
DDL0
page 100
(0x109)
PINL
PINL7
PINL6
PINL5
PINL4
PINL3
PINL2
PINL1
PINL0
page 100
(0x108)
PORTK
PORTK7
PORTK6
PORTK5
PORTK4
PORTK3
PORTK2
PORTK1
PORTK0
page 99
(0x107)
DDRK
DDK7
DDK6
DDK5
DDK4
DDK3
DDK2
DDK1
DDK0
page 99
(0x106)
PINK
PINK7
PINK6
PINK5
PINK4
PINK3
PINK2
PINK1
PINK0
page 99
(0x105)
PORTJ
PORTJ7
PORTJ6
PORTJ5
PORTJ4
PORTJ3
PORTJ2
PORTJ1
PORTJ0
page 99
(0x104)
DDRJ
DDJ7
DDJ6
DDJ5
DDJ4
DDJ3
DDJ2
DDJ1
DDJ0
page 99
(0x103)
PINJ
PINJ7
PINJ6
PINJ5
PINJ4
PINJ3
PINJ2
PINJ1
PINJ0
page 99
(0x102)
PORTH
PORTH7
PORTH6
PORTH5
PORTH4
PORTH3
PORTH2
PORTH1
PORTH0
page 98
(0x101)
DDRH
DDH7
DDH6
DDH5
DDH4
DDH3
DDH2
DDH1
DDH0
page 99
page 100
ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]
2549QS–AVR–02/2014
11
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page
(0x100)
PINH
PINH7
PINH6
PINH5
PINH4
PINH3
PINH2
PINH1
PINH0
page 99
(0xFF)
Reserved
-
-
-
-
-
-
-
-
(0xFE)
Reserved
-
-
-
-
-
-
-
-
(0xFD)
Reserved
-
-
-
-
-
-
-
-
(0xFC)
Reserved
-
-
-
-
-
-
-
-
(0xFB)
Reserved
-
-
-
-
-
-
-
-
(0xFA)
Reserved
-
-
-
-
-
-
-
-
(0xF9)
Reserved
-
-
-
-
-
-
-
-
(0xF8)
Reserved
-
-
-
-
-
-
-
-
(0xF7)
Reserved
-
-
-
-
-
-
-
-
(0xF6)
Reserved
-
-
-
-
-
-
-
-
(0xF5)
Reserved
-
-
-
-
-
-
-
-
(0xF4)
Reserved
-
-
-
-
-
-
-
-
(0xF3)
Reserved
-
-
-
-
-
-
-
-
(0xF2)
Reserved
-
-
-
-
-
-
-
-
(0xF1)
Reserved
-
-
-
-
-
-
-
-
(0xF0)
Reserved
-
-
-
-
-
-
-
-
(0xEF)
Reserved
-
-
-
-
-
-
-
-
(0xEE)
Reserved
-
-
-
-
-
-
-
-
(0xED)
Reserved
-
-
-
-
-
-
-
-
(0xEC)
Reserved
-
-
-
-
-
-
-
-
(0xEB)
Reserved
-
-
-
-
-
-
-
(0xEA)
Reserved
-
-
-
-
-
-
-
-
(0xE9)
Reserved
-
-
-
-
-
-
-
-
(0xE8)
Reserved
-
-
-
-
-
-
-
-
(0xE7)
Reserved
-
-
-
-
-
-
-
(0xE6)
Reserved
-
-
-
-
-
-
-
-
(0xE5)
Reserved
-
-
-
-
-
-
-
-
(0xE4)
Reserved
-
-
-
-
-
-
-
-
(0xE3)
Reserved
-
-
-
-
-
-
-
(0xE2)
Reserved
-
-
-
-
-
-
-
(0xE1)
Reserved
-
-
-
-
-
-
-
(0xE0)
Reserved
-
-
-
-
-
-
-
(0xDF)
Reserved
-
-
-
-
-
-
-
-
(0xDE)
Reserved
-
-
-
-
-
-
-
-
(0xDD)
Reserved
-
-
-
-
-
-
-
(0xDC)
Reserved
-
-
-
-
-
-
-
-
(0xDB)
Reserved
-
-
-
-
-
-
-
-
(0xDA)
Reserved
-
-
-
-
-
-
-
-
(0xD9)
Reserved
-
-
-
-
-
-
-
(0xD8)
Reserved
-
-
-
-
-
-
-
-
(0xD7)
Reserved
-
-
-
-
-
-
-
-
(0xD6)
UDR2
(0xD5)
UBRR2H
(0xD4)
UBRR2L
(0xD3)
Reserved
-
-
(0xD2)
UCSR2C
UMSEL21
UMSEL20
(0xD1)
UCSR2B
RXCIE2
TXCIE2
(0xD0)
UCSR2A
RXC2
TXC2
(0xCF)
Reserved
-
-
USART2 I/O Data Register
-
-
-
-
page 218
USART2 Baud Rate Register High Byte
page 222
USART2 Baud Rate Register Low Byte
-
page 222
-
-
-
-
-
UPM21
UPM20
USBS2
UCSZ21
UCSZ20
UCPOL2
page 235
UDRIE2
RXEN2
TXEN2
UCSZ22
RXB82
TXB82
page 234
UDRE2
FE2
DOR2
UPE2
U2X2
MPCM2
page 233
-
-
-
-
-
-
-
-
-
(0xCE)
UDR1
(0xCD)
UBRR1H
USART1 I/O Data Register
(0xCC)
UBRR1L
(0xCB)
Reserved
-
-
(0xCA)
UCSR1C
UMSEL11
UMSEL10
(0xC9)
UCSR1B
RXCIE1
TXCIE1
(0xC8)
UCSR1A
RXC1
TXC1
(0xC7)
Reserved
-
-
-
-
-
-
page 218
USART1 Baud Rate Register High Byte
page 222
USART1 Baud Rate Register Low Byte
-
page 222
-
-
-
-
-
UPM11
UPM10
USBS1
UCSZ11
UCSZ10
UCPOL1
page 235
UDRIE1
RXEN1
TXEN1
UCSZ12
RXB81
TXB81
page 234
UDRE1
FE1
DOR1
UPE1
U2X1
MPCM1
page 233
-
-
-
-
-
-
(0xC6)
UDR0
(0xC5)
UBRR0H
USART0 I/O Data Register
(0xC4)
UBRR0L
(0xC3)
Reserved
-
-
(0xC2)
UCSR0C
UMSEL01
UMSEL00
(0xC1)
UCSR0B
RXCIE0
TXCIE0
(0xC0)
UCSR0A
RXC0
TXC0
(0xBF)
Reserved
-
-
(0xBE)
Reserved
-
-
-
-
-
(0xBD)
TWAMR
TWAM6
TWAM5
TWAM4
TWAM3
TWAM2
-
page 218
USART0 Baud Rate Register High Byte
page 222
USART0 Baud Rate Register Low Byte
-
page 222
-
-
-
-
-
UPM01
UPM00
USBS0
UCSZ01
UCSZ00
UCPOL0
page 235
UDRIE0
RXEN0
TXEN0
UCSZ02
RXB80
TXB80
page 234
UDRE0
FE0
DOR0
UPE0
U2X0
MPCM0
page 234
-
-
-
-
-
-
-
-
-
TWAM1
TWAM0
-
page 264
ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]
2549QS–AVR–02/2014
12
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page
(0xBC)
TWCR
TWINT
TWEA
TWSTA
TWSTO
TWWC
TWEN
-
TWIE
page 261
(0xBB)
TWDR
(0xBA)
TWAR
TWA6
TWA5
TWA4
TWA3
TWA2
TWA1
TWA0
TWGCE
page 263
(0xB9)
TWSR
TWS7
TWS6
TWS5
TWS4
TWS3
-
TWPS1
TWPS0
page 262
2-wire Serial Interface Data Register
page 263
(0xB8)
TWBR
(0xB7)
Reserved
-
-
-
2-wire Serial Interface Bit Rate Register
-
-
-
-
-
page 261
(0xB6)
ASSR
-
EXCLK
AS2
TCN2UB
OCR2AUB
OCR2BUB
TCR2AUB
TCR2BUB
(0xB5)
Reserved
-
-
-
-
-
-
-
-
(0xB4)
OCR2B
Timer/Counter2 Output Compare Register B
page 186
(0xB3)
OCR2A
Timer/Counter2 Output Compare Register A
page 186
(0xB2)
TCNT2
Timer/Counter2 (8 Bit)
(0xB1)
TCCR2B
FOC2A
FOC2B
-
-
WGM22
CS22
CS21
CS20
page 185
(0xB0)
TCCR2A
COM2A1
COM2A0
COM2B1
COM2B0
-
-
WGM21
WGM20
page 186
page 179
page 186
(0xAF)
Reserved
-
-
-
-
-
-
-
-
(0xAE)
Reserved
-
-
-
-
-
-
-
-
(0xAD)
OCR4CH
Timer/Counter4 - Output Compare Register C High Byte
page 160
(0xAC)
OCR4CL
Timer/Counter4 - Output Compare Register C Low Byte
page 160
(0xAB)
OCR4BH
Timer/Counter4 - Output Compare Register B High Byte
page 160
(0xAA)
OCR4BL
Timer/Counter4 - Output Compare Register B Low Byte
page 160
(0xA9)
OCR4AH
Timer/Counter4 - Output Compare Register A High Byte
page 159
(0xA8)
OCR4AL
Timer/Counter4 - Output Compare Register A Low Byte
page 159
(0xA7)
ICR4H
Timer/Counter4 - Input Capture Register High Byte
page 161
(0xA6)
ICR4L
Timer/Counter4 - Input Capture Register Low Byte
page 161
(0xA5)
TCNT4H
Timer/Counter4 - Counter Register High Byte
page 158
(0xA4)
TCNT4L
(0xA3)
Reserved
-
-
-
Timer/Counter4 - Counter Register Low Byte
(0xA2)
TCCR4C
FOC4A
FOC4B
FOC4C
-
-
-
-
-
page 157
(0xA1)
TCCR4B
ICNC4
ICES4
-
WGM43
WGM42
CS42
CS41
CS40
page 156
(0xA0)
TCCR4A
COM4A1
COM4A0
COM4B1
COM4B0
COM4C1
COM4C0
WGM41
WGM40
page 154
(0x9F)
Reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
page 158
-
-
-
(0x9E)
Reserved
(0x9D)
OCR3CH
Timer/Counter3 - Output Compare Register C High Byte
page 159
(0x9C)
OCR3CL
Timer/Counter3 - Output Compare Register C Low Byte
page 159
(0x9B)
OCR3BH
Timer/Counter3 - Output Compare Register B High Byte
page 159
(0x9A)
OCR3BL
Timer/Counter3 - Output Compare Register B Low Byte
page 159
(0x99)
OCR3AH
Timer/Counter3 - Output Compare Register A High Byte
page 159
(0x98)
OCR3AL
Timer/Counter3 - Output Compare Register A Low Byte
page 159
(0x97)
ICR3H
Timer/Counter3 - Input Capture Register High Byte
page 161
(0x96)
ICR3L
Timer/Counter3 - Input Capture Register Low Byte
page 161
(0x95)
TCNT3H
Timer/Counter3 - Counter Register High Byte
page 158
(0x94)
TCNT3L
Timer/Counter3 - Counter Register Low Byte
(0x93)
Reserved
-
-
-
-
-
page 158
-
-
-
(0x92)
TCCR3C
FOC3A
FOC3B
FOC3C
-
-
-
-
-
page 157
(0x91)
TCCR3B
ICNC3
ICES3
-
WGM33
WGM32
CS32
CS31
CS30
page 156
(0x90)
TCCR3A
COM3A1
COM3A0
COM3B1
COM3B0
COM3C1
COM3C0
WGM31
WGM30
page 154
(0x8F)
Reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
(0x8E)
Reserved
(0x8D)
OCR1CH
Timer/Counter1 - Output Compare Register C High Byte
page 159
(0x8C)
OCR1CL
Timer/Counter1 - Output Compare Register C Low Byte
page 159
(0x8B)
OCR1BH
Timer/Counter1 - Output Compare Register B High Byte
page 159
(0x8A)
OCR1BL
Timer/Counter1 - Output Compare Register B Low Byte
page 159
(0x89)
OCR1AH
Timer/Counter1 - Output Compare Register A High Byte
page 159
(0x88)
OCR1AL
Timer/Counter1 - Output Compare Register A Low Byte
page 159
(0x87)
ICR1H
Timer/Counter1 - Input Capture Register High Byte
page 160
(0x86)
ICR1L
Timer/Counter1 - Input Capture Register Low Byte
page 160
(0x85)
TCNT1H
Timer/Counter1 - Counter Register High Byte
page 158
(0x84)
TCNT1L
Timer/Counter1 - Counter Register Low Byte
(0x83)
Reserved
-
-
-
-
-
page 158
-
-
-
(0x82)
TCCR1C
FOC1A
FOC1B
FOC1C
-
-
-
-
-
page 157
(0x81)
TCCR1B
ICNC1
ICES1
-
WGM13
WGM12
CS12
CS11
CS10
page 156
(0x80)
TCCR1A
COM1A1
COM1A0
COM1B1
COM1B0
COM1C1
COM1C0
WGM11
WGM10
page 154
(0x7F)
DIDR1
-
-
-
-
-
-
AIN1D
AIN0D
page 267
(0x7E)
DIDR0
ADC7D
ADC6D
ADC5D
ADC4D
ADC3D
ADC2D
ADC1D
ADC0D
page 287
(0x7D)
DIDR2
ADC15D
ADC14D
ADC13D
ADC12D
ADC11D
ADC10D
ADC9D
ADC8D
page 288
(0x7C)
ADMUX
REFS1
REFS0
ADLAR
MUX4
MUX3
MUX2
MUX1
MUX0
page 281
(0x7B)
ADCSRB
-
ACME
-
-
MUX5
ADTS2
ADTS1
ADTS0
page 266, 282, 287
(0x7A)
ADCSRA
ADEN
ADSC
ADATE
ADIF
ADIE
ADPS2
ADPS1
ADPS0
page 285
(0x79)
ADCH
ADC Data Register High byte
page 286
ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]
2549QS–AVR–02/2014
13
Address
Name
(0x78)
ADCL
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(0x77)
Reserved
-
-
-
-
-
-
-
(0x76)
Reserved
-
-
-
-
-
-
-
-
(0x75)
XMCRB
XMBK
-
-
-
-
XMM2
XMM1
XMM0
(0x74)
XMCRA
SRE
SRL2
SRL1
SRL0
SRW11
SRW10
SRW01
SRW00
page 36
(0x73)
TIMSK5
-
-
ICIE5
-
OCIE5C
OCIE5B
OCIE5A
TOIE5
page 162
(0x72)
TIMSK4
-
-
ICIE4
-
OCIE4C
OCIE4B
OCIE4A
TOIE4
page 161
(0x71)
TIMSK3
-
-
ICIE3
-
OCIE3C
OCIE3B
OCIE3A
TOIE3
page 161
(0x70)
TIMSK2
-
-
-
-
-
OCIE2B
OCIE2A
TOIE2
page 188
(0x6F)
TIMSK1
-
-
ICIE1
-
OCIE1C
OCIE1B
OCIE1A
TOIE1
page 161
(0x6E)
TIMSK0
-
-
-
-
-
OCIE0B
OCIE0A
TOIE0
page 131
(0x6D)
PCMSK2
PCINT23
PCINT22
PCINT21
PCINT20
PCINT19
PCINT18
PCINT17
PCINT16
page 113
(0x6C)
PCMSK1
PCINT15
PCINT14
PCINT13
PCINT12
PCINT11
PCINT10
PCINT9
PCINT8
page 113
(0x6B)
PCMSK0
PCINT7
PCINT6
PCINT5
PCINT4
PCINT3
PCINT2
PCINT1
PCINT0
page 114
(0x6A)
EICRB
ISC71
ISC70
ISC61
ISC60
ISC51
ISC50
ISC41
ISC40
page 110
(0x69)
EICRA
ISC31
ISC30
ISC21
ISC20
ISC11
ISC10
ISC01
ISC00
page 110
(0x68)
PCICR
-
-
-
-
-
PCIE2
PCIE1
PCIE0
page 112
(0x67)
Reserved
-
-
-
-
-
-
-
-
(0x66)
OSCCAL
(0x65)
PRR1
-
-
PRTIM5
PRTIM4
PRTIM3
PRUSART3
PRUSART2
PRUSART1
page 56
(0x64)
PRR0
PRTWI
PRTIM2
PRTIM0
-
PRTIM1
PRSPI
PRUSART0
PRADC
page 55
(0x63)
Reserved
-
-
-
-
-
-
-
-
(0x62)
Reserved
-
-
-
-
-
-
-
-
(0x61)
CLKPR
CLKPCE
-
-
-
CLKPS3
CLKPS2
CLKPS1
CLKPS0
page 48
(0x60)
WDTCSR
WDIF
WDIE
WDP3
WDCE
WDE
WDP2
WDP1
WDP0
page 65
ADC Data Register Low byte
Page
page 286
-
Oscillator Calibration Register
page 38
page 48
0x3F (0x5F)
SREG
I
T
H
S
V
N
Z
C
page 13
0x3E (0x5E)
SPH
SP15
SP14
SP13
SP12
SP11
SP10
SP9
SP8
page 15
0x3D (0x5D)
SPL
SP7
SP6
SP5
SP4
SP3
SP2
SP1
SP0
page 15
0x3C (0x5C)
EIND
-
-
-
-
-
-
-
EIND0
page 16
0x3B (0x5B)
RAMPZ
-
-
-
-
-
-
RAMPZ1
RAMPZ0
page 16
0x3A (0x5A)
Reserved
-
-
-
-
-
-
-
-
0x39 (0x59)
Reserved
-
-
-
-
-
-
-
-
0x38 (0x58)
Reserved
-
-
-
-
-
-
-
-
0x37 (0x57)
SPMCSR
SPMIE
RWWSB
SIGRD
RWWSRE
BLBSET
PGWRT
PGERS
SPMEN
0x36 (0x56)
Reserved
-
-
-
-
-
-
-
-
0x35 (0x55)
MCUCR
JTD
-
-
PUD
-
-
IVSEL
IVCE
page 64, 108, 96, 301
0x34 (0x54)
MCUSR
-
-
-
JTRF
WDRF
BORF
EXTRF
PORF
page 301
0x33 (0x53)
SMCR
-
-
-
-
SM2
SM1
SM0
SE
page 50
0x32 (0x52)
Reserved
-
-
-
-
-
-
-
-
0x31 (0x51)
OCDR
OCDR7
OCDR6
OCDR5
OCDR4
OCDR3
OCDR2
OCDR1
OCDR0
page 294
0x30 (0x50)
ACSR
ACD
ACBG
ACO
ACI
ACIE
ACIC
ACIS1
ACIS0
page 266
0x2F (0x4F)
Reserved
-
-
-
-
-
-
-
-
SPI Data Register
page 323
0x2E (0x4E)
SPDR
0x2D (0x4D)
SPSR
SPIF
WCOL
-
-
-
-
-
SPI2X
page 198
0x2C (0x4C)
SPCR
SPIE
SPE
DORD
MSTR
CPOL
CPHA
SPR1
SPR0
page 197
0x2B (0x4B)
GPIOR2
General Purpose I/O Register 2
0x2A (0x4A)
GPIOR1
General Purpose I/O Register 1
0x29 (0x49)
Reserved
0x28 (0x48)
OCR0B
Timer/Counter0 Output Compare Register B
page 130
0x27 (0x47)
OCR0A
Timer/Counter0 Output Compare Register A
page 130
0x26 (0x46)
TCNT0
Timer/Counter0 (8 Bit)
0x25 (0x45)
TCCR0B
FOC0A
FOC0B
-
-
WGM02
CS02
CS01
CS00
page 129
0x24 (0x44)
TCCR0A
COM0A1
COM0A0
COM0B1
COM0B0
-
-
WGM01
WGM00
page 126
0x23 (0x43)
GTCCR
TSM
-
-
-
-
-
PSRASY
PSRSYNC
page 166, 189
0x22 (0x42)
EEARH
-
-
-
-
0x21 (0x41)
EEARL
EEPROM Address Register Low Byte
0x20 (0x40)
EEDR
EEPROM Data Register
0x1F (0x3F)
EECR
0x1E (0x3E)
GPIOR0
0x1D (0x3D)
EIMSK
INT7
INT6
INT5
INT4
INT3
0x1C (0x3C)
EIFR
INTF7
INTF6
INTF5
INTF4
INTF3
INTF2
0x1B (0x3B)
PCIFR
-
-
-
-
-
PCIF2
0x1A (0x3A)
TIFR5
-
-
ICF5
-
OCF5C
OCF5B
0x19 (0x39)
TIFR4
-
-
ICF4
-
OCF4C
0x18 (0x38)
TIFR3
-
-
ICF3
-
0x17 (0x37)
TIFR2
-
-
-
0x16 (0x36)
TIFR1
-
-
0x15 (0x35)
TIFR0
-
-
-
-
-
-
-
EEPM1
-
EEPM0
page 199
page 36
page 36
-
-
-
-
page 130
EEPROM Address Register High Byte
EERIE
page 34
page 34
page 34
EEMPE
EEPE
EERE
page 34
INT2
INT1
INT0
page 111
INTF1
INTF0
page 112
PCIF1
PCIF0
page 113
OCF5A
TOV5
page 162
OCF4B
OCF4A
TOV4
page 162
OCF3C
OCF3B
OCF3A
TOV3
page 162
-
-
OCF2B
OCF2A
TOV2
page 188
ICF1
-
OCF1C
OCF1B
OCF1A
TOV1
page 162
-
-
-
OCF0B
OCF0A
TOV0
page 131
General Purpose I/O Register 0
page 36
ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]
2549QS–AVR–02/2014
14
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page
0x14 (0x34)
PORTG
-
-
PORTG5
PORTG4
PORTG3
PORTG2
PORTG1
PORTG0
page 98
0x13 (0x33)
DDRG
-
-
DDG5
DDG4
DDG3
DDG2
DDG1
DDG0
page 98
0x12 (0x32)
PING
-
-
PING5
PING4
PING3
PING2
PING1
PING0
page 98
0x11 (0x31)
PORTF
PORTF7
PORTF6
PORTF5
PORTF4
PORTF3
PORTF2
PORTF1
PORTF0
page 97
0x10 (0x30)
DDRF
DDF7
DDF6
DDF5
DDF4
DDF3
DDF2
DDF1
DDF0
page 98
0x0F (0x2F)
PINF
PINF7
PINF6
PINF5
PINF4
PINF3
PINF2
PINF1
PINF0
page 98
0x0E (0x2E)
PORTE
PORTE7
PORTE6
PORTE5
PORTE4
PORTE3
PORTE2
PORTE1
PORTE0
page 97
0x0D (0x2D)
DDRE
DDE7
DDE6
DDE5
DDE4
DDE3
DDE2
DDE1
DDE0
page 97
0x0C (0x2C)
PINE
PINE7
PINE6
PINE5
PINE4
PINE3
PINE2
PINE1
PINE0
page 98
0x0B (0x2B)
PORTD
PORTD7
PORTD6
PORTD5
PORTD4
PORTD3
PORTD2
PORTD1
PORTD0
page 97
0x0A (0x2A)
DDRD
DDD7
DDD6
DDD5
DDD4
DDD3
DDD2
DDD1
DDD0
page 97
0x09 (0x29)
PIND
PIND7
PIND6
PIND5
PIND4
PIND3
PIND2
PIND1
PIND0
page 97
0x08 (0x28)
PORTC
PORTC7
PORTC6
PORTC5
PORTC4
PORTC3
PORTC2
PORTC1
PORTC0
page 97
0x07 (0x27)
DDRC
DDC7
DDC6
DDC5
DDC4
DDC3
DDC2
DDC1
DDC0
page 97
0x06 (0x26)
PINC
PINC7
PINC6
PINC5
PINC4
PINC3
PINC2
PINC1
PINC0
page 97
0x05 (0x25)
PORTB
PORTB7
PORTB6
PORTB5
PORTB4
PORTB3
PORTB2
PORTB1
PORTB0
page 96
0x04 (0x24)
DDRB
DDB7
DDB6
DDB5
DDB4
DDB3
DDB2
DDB1
DDB0
page 96
0x03 (0x23)
PINB
PINB7
PINB6
PINB5
PINB4
PINB3
PINB2
PINB1
PINB0
page 96
page 96
0x02 (0x22)
PORTA
PORTA7
PORTA6
PORTA5
PORTA4
PORTA3
PORTA2
PORTA1
PORTA0
0x01 (0x21)
DDRA
DDA7
DDA6
DDA5
DDA4
DDA3
DDA2
DDA1
DDA0
page 96
0x00 (0x20)
PINA
PINA7
PINA6
PINA5
PINA4
PINA3
PINA2
PINA1
PINA0
page 96
Notes:
1. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses
should never be written.
2. I/O registers within the address range $00 - $1F are directly bit-accessible using the SBI and CBI instructions. In these registers, the value of single bits can be checked by using the SBIS and SBIC instructions.
3. Some of the status flags are cleared by writing a logical one to them. Note that the CBI and SBI instructions will operate on
all bits in the I/O register, writing a one back into any flag read as set, thus clearing the flag. The CBI and SBI instructions
work with registers 0x00 to 0x1F only.
4. When using the I/O specific commands IN and OUT, the I/O addresses $00 - $3F must be used. When addressing I/O registers as data space using LD and ST instructions, $20 must be added to these addresses. The
ATmega640/1280/1281/2560/2561 is a complex microcontroller with more peripheral units than can be supported within the
64 location reserved in Opcode for the IN and OUT instructions. For the Extended I/O space from $60 - $1FF in SRAM, only
the ST/STS/STD and LD/LDS/LDD instructions can be used.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]
2549QS–AVR–02/2014
15
8. Instruction Set Summary
Mnemonics
Operands
Description
Operation
Flags
#Clocks
ARITHMETIC AND LOGIC INSTRUCTIONS
ADD
Rd, Rr
Add two Registers
Rd  Rd + Rr
Z, C, N, V, H
1
ADC
Rd, Rr
Add with Carry two Registers
Rd  Rd + Rr + C
Z, C, N, V, H
1
ADIW
Rdl,K
Add Immediate to Word
Rdh:Rdl  Rdh:Rdl + K
Z, C, N, V, S
2
SUB
Rd, Rr
Subtract two Registers
Rd  Rd - Rr
Z, C, N, V, H
1
SUBI
Rd, K
Subtract Constant from Register
Rd  Rd - K
Z, C, N, V, H
1
SBC
Rd, Rr
Subtract with Carry two Registers
Rd  Rd - Rr - C
Z, C, N, V, H
1
SBCI
Rd, K
Subtract with Carry Constant from Reg.
Rd  Rd - K - C
Z, C, N, V, H
1
SBIW
Rdl,K
Subtract Immediate from Word
Rdh:Rdl  Rdh:Rdl - K
Z, C, N, V, S
2
AND
Rd, Rr
Logical AND Registers
Rd Rd  Rr
Z, N, V
1
ANDI
Rd, K
Logical AND Register and Constant
Rd  Rd K
Z, N, V
1
OR
Rd, Rr
Logical OR Registers
Rd  Rd v Rr
Z, N, V
1
ORI
Rd, K
Logical OR Register and Constant
Rd Rd v K
Z, N, V
1
EOR
Rd, Rr
Exclusive OR Registers
Rd  Rd  Rr
Z, N, V
1
COM
Rd
One’s Complement
Rd  0xFF  Rd
Z, C, N, V
1
NEG
Rd
Two’s Complement
Rd  0x00  Rd
Z, C, N, V, H
1
SBR
Rd,K
Set Bit(s) in Register
Rd  Rd v K
Z, N, V
1
CBR
Rd,K
Clear Bit(s) in Register
Rd  Rd  (0xFF - K)
Z, N, V
1
INC
Rd
Increment
Rd  Rd + 1
Z, N, V
1
DEC
Rd
Decrement
Rd  Rd  1
Z, N, V
1
TST
Rd
Test for Zero or Minus
Rd  Rd  Rd
Z, N, V
1
CLR
Rd
Clear Register
Rd  Rd  Rd
Z, N, V
1
SER
Rd
Set Register
Rd  0xFF
None
1
MUL
Rd, Rr
Multiply Unsigned
R1:R0  Rd x Rr
Z, C
2
MULS
Rd, Rr
Multiply Signed
R1:R0  Rd x Rr
Z, C
2
MULSU
Rd, Rr
Multiply Signed with Unsigned
R1:R0  Rd x Rr
Z, C
2
FMUL
Rd, Rr
Fractional Multiply Unsigned
R1:R0  (Rd x Rr) <<
Z, C
2
FMULS
Rd, Rr
Fractional Multiply Signed
Z, C
2
FMULSU
Rd, Rr
Fractional Multiply Signed with Unsigned
Z, C
2
1
R1:R0  (Rd x Rr) << 1
R1:R0  (Rd x Rr) << 1
BRANCH INSTRUCTIONS
RJMP
k
Relative Jump
PC PC + k + 1
None
2
Indirect Jump to (Z)
None
2
None
2
None
3
4
Extended Indirect Jump to (Z)
PC  Z
PC (EIND:Z)
JMP
k
Direct Jump
PC k
RCALL
k
IJMP
EIJMP
Relative Subroutine Call
PC  PC + k + 1
None
ICALL
Indirect Call to (Z)
None
4
EICALL
Extended Indirect Call to (Z)
PC  Z
PC (EIND:Z)
None
4
Direct Subroutine Call
PC  k
None
5
RET
Subroutine Return
PC  STACK
None
5
RETI
Interrupt Return
PC  STACK
I
Compare, Skip if Equal
if (Rd = Rr) PC PC + 2 or 3
None
CALL
CPSE
k
Rd,Rr
5
1/2/3
CP
Rd,Rr
Compare
Rd  Rr
Z, N, V, C, H
1
CPC
Rd,Rr
Compare with Carry
Rd  Rr  C
Z, N, V, C, H
1
CPI
Rd,K
Compare Register with Immediate
Rd  K
Z, N, V, C, H
SBRC
Rr, b
Skip if Bit in Register Cleared
if (Rr(b)=0) PC  PC + 2 or 3
None
1
1/2/3
SBRS
Rr, b
Skip if Bit in Register is Set
if (Rr(b)=1) PC  PC + 2 or 3
None
1/2/3
SBIC
P, b
Skip if Bit in I/O Register Cleared
if (P(b)=0) PC  PC + 2 or 3
None
1/2/3
SBIS
P, b
Skip if Bit in I/O Register is Set
if (P(b)=1) PC  PC + 2 or 3
None
1/2/3
BRBS
s, k
Branch if Status Flag Set
if (SREG(s) = 1) then PCPC+k + 1
None
1/2
BRBC
s, k
Branch if Status Flag Cleared
if (SREG(s) = 0) then PCPC+k + 1
None
1/2
BREQ
k
Branch if Equal
if (Z = 1) then PC  PC + k + 1
None
1/2
1/2
BRNE
k
Branch if Not Equal
if (Z = 0) then PC  PC + k + 1
None
BRCS
k
Branch if Carry Set
if (C = 1) then PC  PC + k + 1
None
1/2
BRCC
k
Branch if Carry Cleared
if (C = 0) then PC  PC + k + 1
None
1/2
BRSH
k
Branch if Same or Higher
if (C = 0) then PC  PC + k + 1
None
1/2
BRLO
k
Branch if Lower
if (C = 1) then PC  PC + k + 1
None
1/2
BRMI
k
Branch if Minus
if (N = 1) then PC  PC + k + 1
None
1/2
BRPL
k
Branch if Plus
if (N = 0) then PC  PC + k + 1
None
1/2
BRGE
k
Branch if Greater or Equal, Signed
if (N  V= 0) then PC  PC + k + 1
None
1/2
BRLT
k
Branch if Less Than Zero, Signed
if (N  V= 1) then PC  PC + k + 1
None
1/2
BRHS
k
Branch if Half Carry Flag Set
if (H = 1) then PC  PC + k + 1
None
1/2
BRHC
k
Branch if Half Carry Flag Cleared
if (H = 0) then PC  PC + k + 1
None
1/2
BRTS
k
Branch if T Flag Set
if (T = 1) then PC  PC + k + 1
None
1/2
BRTC
k
Branch if T Flag Cleared
if (T = 0) then PC  PC + k + 1
None
1/2
BRVS
k
Branch if Overflow Flag is Set
if (V = 1) then PC  PC + k + 1
None
1/2
ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]
2549QS–AVR–02/2014
16
Mnemonics
Operands
Description
Operation
Flags
#Clocks
BRVC
k
Branch if Overflow Flag is Cleared
if (V = 0) then PC  PC + k + 1
None
1/2
BRIE
k
Branch if Interrupt Enabled
if ( I = 1) then PC  PC + k + 1
None
1/2
BRID
k
Branch if Interrupt Disabled
if ( I = 0) then PC  PC + k + 1
None
1/2
BIT AND BIT-TEST INSTRUCTIONS
SBI
P,b
Set Bit in I/O Register
I/O(P,b)  1
None
2
CBI
P,b
Clear Bit in I/O Register
I/O(P,b)  0
None
2
LSL
Rd
Logical Shift Left
Rd(n+1)  Rd(n), Rd(0)  0
Z, C, N, V
1
LSR
Rd
Logical Shift Right
Rd(n)  Rd(n+1), Rd(7)  0
Z, C, N, V
1
ROL
Rd
Rotate Left Through Carry
Rd(0)C,Rd(n+1) Rd(n),CRd(7)
Z, C, N, V
1
ROR
Rd
Rotate Right Through Carry
Rd(7)C,Rd(n) Rd(n+1),CRd(0)
Z, C, N, V
1
ASR
Rd
Arithmetic Shift Right
Rd(n)  Rd(n+1), n=0..6
Z, C, N, V
1
SWAP
Rd
Swap Nibbles
Rd(3..0)Rd(7..4),Rd(7..4)Rd(3..0)
None
1
BSET
s
Flag Set
SREG(s)  1
SREG(s)
1
BCLR
s
Flag Clear
SREG(s)  0
SREG(s)
1
BST
Rr, b
Bit Store from Register to T
T  Rr(b)
T
1
BLD
Rd, b
Bit load from T to Register
Rd(b)  T
None
1
SEC
Set Carry
C1
C
1
CLC
Clear Carry
C0
C
1
SEN
Set Negative Flag
N1
N
1
CLN
Clear Negative Flag
N0
N
1
SEZ
Set Zero Flag
Z1
Z
1
CLZ
Clear Zero Flag
Z0
Z
1
SEI
Global Interrupt Enable
I1
I
1
CLI
Global Interrupt Disable
I 0
I
1
SES
Set Signed Test Flag
S1
S
1
CLS
Clear Signed Test Flag
S0
S
1
SEV
Set Twos Complement Overflow.
V1
V
1
CLV
Clear Twos Complement Overflow
V0
V
1
SET
Set T in SREG
T1
T
1
CLT
Clear T in SREG
T0
T
1
SEH
CLH
Set Half Carry Flag in SREG
Clear Half Carry Flag in SREG
H1
H0
H
H
1
1
DATA TRANSFER INSTRUCTIONS
MOV
Rd, Rr
Move Between Registers
1
Rd, Rr
Copy Register Word
Rd  Rr
Rd+1:Rd  Rr+1:Rr
None
MOVW
None
1
LDI
Rd, K
Load Immediate
Rd  K
None
1
LD
Rd, X
Load Indirect
Rd  (X)
None
2
LD
Rd, X+
Load Indirect and Post-Inc.
Rd  (X), X  X + 1
None
2
LD
Rd, - X
Load Indirect and Pre-Dec.
X  X - 1, Rd  (X)
None
2
LD
Rd, Y
Load Indirect
Rd  (Y)
None
2
LD
Rd, Y+
Load Indirect and Post-Inc.
Rd  (Y), Y  Y + 1
None
2
LD
Rd, - Y
Load Indirect and Pre-Dec.
Y  Y - 1, Rd  (Y)
None
2
LDD
Rd,Y+q
Load Indirect with Displacement
Rd  (Y + q)
None
2
LD
Rd, Z
Load Indirect
Rd  (Z)
None
2
LD
Rd, Z+
Load Indirect and Post-Inc.
Rd  (Z), Z  Z+1
None
2
LD
Rd, -Z
Load Indirect and Pre-Dec.
Z  Z - 1, Rd  (Z)
None
2
LDD
Rd, Z+q
Load Indirect with Displacement
Rd  (Z + q)
None
2
2
LDS
Rd, k
Load Direct from SRAM
Rd  (k)
None
ST
X, Rr
Store Indirect
(X) Rr
None
2
ST
X+, Rr
Store Indirect and Post-Inc.
(X) Rr, X  X + 1
None
2
ST
- X, Rr
Store Indirect and Pre-Dec.
X  X - 1, (X)  Rr
None
2
ST
Y, Rr
Store Indirect
(Y)  Rr
None
2
ST
Y+, Rr
Store Indirect and Post-Inc.
(Y)  Rr, Y  Y + 1
None
2
ST
- Y, Rr
Store Indirect and Pre-Dec.
Y  Y - 1, (Y)  Rr
None
2
STD
Y+q,Rr
Store Indirect with Displacement
(Y + q)  Rr
None
2
ST
Z, Rr
Store Indirect
(Z)  Rr
None
2
2
ST
Z+, Rr
Store Indirect and Post-Inc.
(Z)  Rr, Z  Z + 1
None
ST
-Z, Rr
Store Indirect and Pre-Dec.
Z  Z - 1, (Z)  Rr
None
2
STD
Z+q,Rr
Store Indirect with Displacement
(Z + q)  Rr
None
2
STS
k, Rr
Store Direct to SRAM
(k)  Rr
None
2
Load Program Memory
R0  (Z)
None
3
Load Program Memory
Rd  (Z)
None
3
3
LPM
LPM
Rd, Z
LPM
Rd, Z+
ELPM
ELPM
Rd, Z
ELPM
Rd, Z+
SPM
IN
Rd, P
Load Program Memory and Post-Inc
Rd  (Z), Z  Z+1
None
Extended Load Program Memory
R0  (RAMPZ:Z)
None
3
Extended Load Program Memory
Rd  (RAMPZ:Z)
None
3
3
Extended Load Program Memory
Rd  (RAMPZ:Z), RAMPZ:Z RAMPZ:Z+1
None
Store Program Memory
(Z)  R1:R0
None
-
In Port
Rd  P
None
1
ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]
2549QS–AVR–02/2014
17
Mnemonics
Operands
Description
Operation
Flags
#Clocks
OUT
P, Rr
Out Port
P  Rr
None
1
PUSH
Rr
Push Register on Stack
STACK  Rr
None
2
POP
Rd
Pop Register from Stack
Rd  STACK
None
2
MCU CONTROL INSTRUCTIONS
NOP
No Operation
None
1
SLEEP
Sleep
(see specific descr. for Sleep function)
None
1
WDR
BREAK
Watchdog Reset
Break
(see specific descr. for WDR/timer)
For On-chip Debug Only
None
None
1
N/A
Note:
EICALL and EIJMP do not exist in ATmega640/1280/1281.
ELPM does not exist in ATmega640.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]
2549QS–AVR–02/2014
18
9. Ordering Information
9.1
ATmega640
Speed [MHz](2)
8
16
Notes:
Power Supply
Ordering Code
Package(1)(3)
1.8 - 5.5V
ATmega640V-8AU
ATmega640V-8AUR(4)
ATmega640V-8CU
ATmega640V-8CUR(4)
100A
100A
100C1
100C1
2.7 - 5.5V
ATmega640-16AU
ATmega640-16AUR(4)
ATmega640-16CU
ATmega640-16CUR(4)
100A
100A
100C1
100C1
Operation Range
Industrial (-40C to 85C)
1. This device can also be supplied in wafer form. Contact your local Atmel sales office for detailed ordering information and
minimum quantities.
2. See “Speed Grades” on page 357.
3. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also
Halide free and fully Green.
4. Tape & Reel.
Package Type
100A
100-lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP)
100C1
100-ball, Chip Ball Grid Array (CBGA)
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
19
9.2
ATmega1280
Speed [MHz](2)
8
16
Notes:
Power Supply
Ordering Code
Package(1)(3)
1.8V - 5.5V
ATmega1280V-8AU
ATmega1280V-8AUR(4)
ATmega1280V-8CU
ATmega1280V-8CUR(4)
100A
100A
100C1
100C1
2.7V - 5.5V
ATmega1280-16AU
ATmega1280-16AUR(4)
ATmega1280-16CU
ATmega1280-16CUR(4)
100A
100A
100C1
100C1
Operation Range
Industrial (-40C to 85C)
1. This device can also be supplied in wafer form. Contact your local Atmel sales office for detailed ordering information and
minimum quantities.
2. See “Speed Grades” on page 357.
3. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also
Halide free and fully Green.
4. Tape & Reel.
Package Type
100A
100-lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP)
100C1
100-ball, Chip Ball Grid Array (CBGA)
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
20
9.3
ATmega1281
Speed [MHz](2)
8
16
Notes:
Ordering Code
Package(1)(3)
1.8 - 5.5V
ATmega1281V-8AU
ATmega1281V-8AUR(4)
ATmega1281V-8MU
ATmega1281V-8MUR(4)
64A
64A
64M2
64M2
2.7 - 5.5V
ATmega1281-16AU
ATmega1281-16AUR(4)
ATmega1281-16MU
ATmega1281-16MUR(4)
64A
64A
64M2
64M2
Power Supply
Operation Range
Industrial
(-40C to 85C)
1. This device can also be supplied in wafer form. Contact your local Atmel sales office for detailed ordering information and
minimum quantities.
2. See “Speed Grades” on page 357.
3. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also
Halide free and fully Green.
4. Tape & Reel.
Package Type
64A
64-lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP)
64M2
64-pad, 9mm × 9mm × 1.0mm Body, Quad Flat No-lead/Micro Lead Frame Package (QFN/MLF)
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
21
9.4
ATmega2560
Speed [MHz](2)
8
16
Notes:
Power Supply
Ordering Code
Package(1)(3)
1.8V - 5.5V
ATmega2560V-8AU
ATmega2560V-8AUR(4)
ATmega2560V-8CU
ATmega2560V-8CUR(4)
100A
100A
100C1
100C1
4.5V - 5.5V
ATmega2560-16AU
ATmega2560-16AUR(4)
ATmega2560-16CU
ATmega2560-16CUR(4)
100A
100A
100C1
100C1
Operation Range
Industrial (-40C to 85C)
1. This device can also be supplied in wafer form. Contact your local Atmel sales office for detailed ordering information and
minimum quantities.
2. See “Speed Grades” on page 357.
3. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also
Halide free and fully Green.
4. Tape & Reel.
Package Type
100A
100-lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP)
100C1
100-ball, Chip Ball Grid Array (CBGA)
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
22
9.5
ATmega2561
Speed [MHz](2)
8
16
Notes:
Power Supply
Ordering Code
Package(1)(3)
1.8V - 5.5V
ATmega2561V-8AU
ATmega2561V-8AUR(4)
ATmega2561V-8MU
ATmega2561V-8MUR(4)
64A
64A
64M2
64M2
4.5V - 5.5V
ATmega2561-16AU
ATmega2561-16AUR(4)
ATmega2561-16MU
ATmega2561-16MUR(4)
64A
64A
64M2
64M2
Operation Range
Industrial
(-40C to 85C)
1. This device can also be supplied in wafer form.Contact your local Atmel sales office for detailed ordering information and
minimum quantities.
2. See “Speed Grades” on page 357.
3. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also
Halide free and fully Green.
4. Tape & Reel.
Package Type
64A
64-lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP)
64M2
64-pad, 9mm × 9mm × 1.0mm Body, Quad Flat No-lead/Micro Lead Frame Package (QFN/MLF)
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
23
10. Packaging Information
10.1
100A
PIN 1
B
PIN 1 IDENTIFIER
E1
e
E
D1
D
C
0°~7°
A1
A2
A
L
COMMON DIMENSIONS
(Unit of Measure = mm)
MIN
NOM
A
–
–
1.20
A1
0.05
–
0.15
SYMBOL
Notes:
1. This package conforms to JEDEC reference MS-026, Variation AED.
2. Dimensions D1 and E1 do not include mold protrusion. Allowable
protrusion is 0.25 mm per side. Dimensions D1 and E1 are maximum
plastic body size dimensions including mold mismatch.
3. Lead coplanarity is 0.08 mm maximum.
MAX
A2
0.95
1.00
1.05
D
15.75
16.00
16.25
D1
13.90
14.00
14.10
E
15.75
16.00
16.25
E1
13.90
14.00
14.10
B
0.17
–
0.27
C
0.09
–
0.20
L
0.45
–
0.75
e
NOTE
Note 2
Note 2
0.50 TYP
2010-10-20
100A, 100-lead, 14 x 14 mm Body Size, 1.0 mm Body Thickness,
0.5 mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP)
100A
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
D
24
10.2
100C1
0.12 Z
E
Marked A1 Identifier
SIDE VIEW
D
A
TOP VIEW
A1
Øb
e
A1 Corner
0.90 TYP
10
9
8
7
6
5
4
3
2
1
A
0.90 TYP
B
C
D
COMMON DIMENSIONS
(Unit of Measure = mm)
E
D1
F
e
SYMBOL
MIN
NOM
MAX
H
A
1.10
–
1.20
I
A1
0.30
0.35
0.40
D
8.90
9.00
9.10
E
8.90
9.00
9.10
G
J
E1
BOTTOM VIEW
D1
7.10
7.20
7.30
E1
7.10
7.20
7.30
Øb
0.35
0.40
0.45
e
NOTE
0.80 TYP
5/25/06
2325 Orchard Parkway
San Jose, CA 95131
TITLE
100C1, 100-ball, 9 x 9 x 1.2 mm Body, Ball Pitch 0.80 mm
Chip Array BGA Package (CBGA)
DRAWING NO.
100C1
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
REV.
A
25
10.3
64A
PIN 1
B
e
PIN 1 IDENTIFIER
E1
E
D1
D
C
0°~7°
A1
A2
A
L
COMMON DIMENSIONS
(Unit of measure = mm)
Notes:
1.This package conforms to JEDEC reference MS-026, Variation AEB.
2. Dimensions D1 and E1 do not include mold protrusion. Allowable
protrusion is 0.25mm per side. Dimensions D1 and E1 are maximum
plastic body size dimensions including mold mismatch.
3. Lead coplanarity is 0.10mm maximum.
SYMBOL
MIN
NOM
MAX
A
–
–
1.20
A1
0.05
–
0.15
A2
0.95
1.00
1.05
D
15.75
16.00
16.25
D1
13.90
14.00
14.10
E
15.75
16.00
16.25
E1
13.90
14.00
14.10
B
0.30
–
0.45
C
0.09
–
0.20
L
0.45
–
0.75
e
NOTE
Note 2
Note 2
0.80 TYP
2010-10-20
2325 Orchard Parkway
San Jose, CA 95131
TITLE
64A, 64-lead, 14 x 14mm Body Size, 1.0mm Body Thickness,
0.8mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP)
DRAWING NO.
REV.
64A
C
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
26
10.4
64M2
D
Marked pin# 1 I D
E
C
SEATING PLANE
A1
TOP VIEW
A3
A
K
0.08 C
L
Pin #1 Corner
D2
1
2
3
SIDE VIEW
Pin #1
Triangle
Option A
COMMON DIMENSIONS
(Unit of measure = mm)
E2
Option B
Pin #1
Chamfer
(C 0.30)
SYMBOL
MIN
NOM
MAX
A
0.80
0.90
1.00
A1
–
0.02
0.05
A3
K
Option C
b
e
Pin #1
Notch
(0.20 R)
BOTTOM VIEW
0.20 REF
b
0.18
0.25
0.30
D
8.90
9.00
9.10
D2
7.50
7.65
7.80
E
8.90
9.00
9.10
E2
7.50
7.65
7.80
e
Notes: 1. JEDEC Standard MO-220, (SAW Singulation) fig . 1, VMMD.
2. Dimension and tolerance conform to ASMEY14.5M-1994.
NOTE
0.50 BSC
L
0.35
0.40
0.45
K
0.20
0.27
0.40
2014-02-12
TITLE
2325 Orchard Parkway
64M2, 64-pad, 9 x 9 x 1.0mm Bod y, Lead Pitch 0.50mm ,
San Jose, CA 95131
7.65mm Exposed Pad, Micro Lead Frame Package (MLF)
DRAWING NO.
64M2
REV.
E
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
27
11. Errata
11.1
ATmega640 rev. B
• Inaccurate ADC conversion in differential mode with 200× gain
• High current consumption in sleep mode
1. Inaccurate ADC conversion in differential mode with 200× gain
With AVCC <3.6V, random conversions will be inaccurate. Typical absolute accuracy may reach 64 LSB.
Problem Fix/Workaround
None.
2. High current consumption in sleep mode
If a pending interrupt cannot wake the part up from the selected sleep mode, the current consumption will
increase during sleep when executing the SLEEP instruction directly after a SEI instruction.
Problem Fix/Workaround
Before entering sleep, interrupts not used to wake the part from the sleep mode should be disabled.
11.2
ATmega640 rev. A
• Inaccurate ADC conversion in differential mode with 200× gain
• High current consumption in sleep mode
1.
Inaccurate ADC conversion in differential mode with 200× gain
With AVCC <3.6V, random conversions will be inaccurate. Typical absolute accuracy may reach 64 LSB.
Problem Fix/Workaround
None.
2. High current consumption in sleep mode
If a pending interrupt cannot wake the part up from the selected sleep mode, the current consumption will
increase during sleep when executing the SLEEP instruction directly after a SEI instruction.
Problem Fix/Workaround
Before entering sleep, interrupts not used to wake the part from the sleep mode should be disabled.
11.3
ATmega1280 rev. B
• High current consumption in sleep mode
1. High current consumption in sleep mode
If a pending interrupt cannot wake the part up from the selected sleep mode, the current consumption will
increase during sleep when executing the SLEEP instruction directly after a SEI instruction.
Problem Fix/Workaround
Before entering sleep, interrupts not used to wake the part from the sleep mode should be disabled.
11.4
ATmega1280 rev. A
• Inaccurate ADC conversion in differential mode with 200× gain
• High current consumption in sleep mode
1.
Inaccurate ADC conversion in differential mode with 200× gain
With AVCC <3.6V, random conversions will be inaccurate. Typical absolute accuracy may reach 64 LSB.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
28
Problem Fix/Workaround
None.
2. High current consumption in sleep mode
If a pending interrupt cannot wake the part up from the selected sleep mode, the current consumption will
increase during sleep when executing the SLEEP instruction directly after a SEI instruction.
Problem Fix/Workaround
Before entering sleep, interrupts not used to wake the part from the sleep mode should be disabled.
11.5
ATmega1281 rev. B
• High current consumption in sleep mode
1. High current consumption in sleep mode
If a pending interrupt cannot wake the part up from the selected sleep mode, the current consumption will
increase during sleep when executing the SLEEP instruction directly after a SEI instruction.
Problem Fix/Workaround
Before entering sleep, interrupts not used to wake the part from the sleep mode should be disabled.
11.6
ATmega1281 rev. A
• Inaccurate ADC conversion in differential mode with 200× gain
• High current consumption in sleep mode
1.
Inaccurate ADC conversion in differential mode with 200× gain
With AVCC <3.6V, random conversions will be inaccurate. Typical absolute accuracy may reach 64 LSB.
Problem Fix/Workaround
None.
2. High current consumption in sleep mode
If a pending interrupt cannot wake the part up from the selected sleep mode, the current consumption will
increase during sleep when executing the SLEEP instruction directly after a SEI instruction.
Problem Fix/Workaround
Before entering sleep, interrupts not used to wake the part from the sleep mode should be disabled.
11.7
ATmega2560 rev. F
• ADC differential input amplification by 46dB (200x) not functional
1. ADC differential input amplification by 46dB (200x) not functional
Problem Fix/Workaround
None.
11.8
ATmega2560 rev. E
No known errata.
11.9
ATmega2560 rev. D
Not sampled.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
29
11.10 ATmega2560 rev. C
• High current consumption in sleep mode
1. High current consumption in sleep mode
If a pending interrupt cannot wake the part up from the selected sleep mode, the current consumption will
increase during sleep when executing the SLEEP instruction directly after a SEI instruction.
Problem Fix/Workaround
Before entering sleep, interrupts not used to wake the part from the sleep mode should be disabled.
11.11 ATmega2560 rev. B
Not sampled.
11.12 ATmega2560 rev. A
•
•
•
•
•
•
1.
Non-Read-While-Write area of flash not functional
Part does not work under 2.4 volts
Incorrect ADC reading in differential mode
Internal ADC reference has too low value
IN/OUT instructions may be executed twice when Stack is in external RAM
EEPROM read from application code does not work in Lock Bit Mode 3
Non-Read-While-Write area of flash not functional
The Non-Read-While-Write area of the flash is not working as expected. The problem is related to the speed of
the part when reading the flash of this area.
Problem Fix/Workaround
- Only use the first 248K of the flash.
- If boot functionality is needed, run the code in the Non-Read-While-Write area at maximum 1/4th of the maximum frequency of the device at any given voltage. This is done by writing the CLKPR register before entering
the boot section of the code.
2. Part does not work under 2.4 volts
The part does not execute code correctly below 2.4 volts.
Problem Fix/Workaround
Do not use the part at voltages below 2.4 volts.
3. Incorrect ADC reading in differential mode
The ADC has high noise in differential mode. It can give up to 7 LSB error.
Problem Fix/Workaround
Use only the 7 MSB of the result when using the ADC in differential mode.
4. Internal ADC reference has too low value
The internal ADC reference has a value lower than specified.
Problem Fix/Workaround
- Use AVCC or external reference.
- The actual value of the reference can be measured by applying a known voltage to the ADC when using the
internal reference. The result when doing later conversions can then be calibrated.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
30
5. IN/OUT instructions may be executed twice when Stack is in external RAM
If either an IN or an OUT instruction is executed directly before an interrupt occurs and the stack pointer is
located in external ram, the instruction will be executed twice. In some cases this will cause a problem, for
example:
- If reading SREG it will appear that the I-flag is cleared.
- If writing to the PIN registers, the port will toggle twice.
- If reading registers with interrupt flags, the flags will appear to be cleared.
Problem Fix/Workaround
There are two application workarounds, where selecting one of them, will be omitting the issue:
- Replace IN and OUT with LD/LDS/LDD and ST/STS/STD instructions.
- Use internal RAM for stack pointer.
6. EEPROM read from application code does not work in Lock Bit Mode 3
When the Memory Lock Bits LB2 and LB1 are programmed to mode 3, EEPROM read does not work from the
application code.
Problem Fix/Workaround
Do not set Lock Bit Protection Mode 3 when the application code needs to read from EEPROM.
11.13 ATmega2561 rev. F
• ADC differential input amplification by 46dB (200x) not functional
1. ADC differential input amplification by 46dB (200x) not functional
Problem Fix/Workaround
None.
11.14 ATmega2561 rev. E
No known errata.
11.15 ATmega2561 rev. D
Not sampled.
11.16 ATmega2561 rev. C
• High current consumption in sleep mode.
1. High current consumption in sleep mode
If a pending interrupt cannot wake the part up from the selected sleep mode, the current consumption will
increase during sleep when executing the SLEEP instruction directly after a SEI instruction.
Problem Fix/Workaround
Before entering sleep, interrupts not used to wake the part from the sleep mode should be disabled.
11.17 ATmega2561 rev. B
Not sampled.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
31
11.18 ATmega2561 rev. A
•
•
•
•
•
•
1.
Non-Read-While-Write area of flash not functional
Part does not work under 2.4 Volts
Incorrect ADC reading in differential mode
Internal ADC reference has too low value
IN/OUT instructions may be executed twice when Stack is in external RAM
EEPROM read from application code does not work in Lock Bit Mode 3
Non-Read-While-Write area of flash not functional
The Non-Read-While-Write area of the flash is not working as expected. The problem is related to the speed of
the part when reading the flash of this area.
Problem Fix/Workaround
- Only use the first 248K of the flash.
- If boot functionality is needed, run the code in the Non-Read-While-Write area at maximum 1/4th of the maximum frequency of the device at any given voltage. This is done by writing the CLKPR register before entering
the boot section of the code.
2. Part does not work under 2.4 volts
The part does not execute code correctly below 2.4 volts.
Problem Fix/Workaround
Do not use the part at voltages below 2.4 volts.
3. Incorrect ADC reading in differential mode
The ADC has high noise in differential mode. It can give up to 7 LSB error.
Problem Fix/Workaround
Use only the 7 MSB of the result when using the ADC in differential mode.
4. Internal ADC reference has too low value
The internal ADC reference has a value lower than specified.
Problem Fix/Workaround
- Use AVCC or external reference.
- The actual value of the reference can be measured by applying a known voltage to the ADC when using the
internal reference. The result when doing later conversions can then be calibrated.
5. IN/OUT instructions may be executed twice when Stack is in external RAM
If either an IN or an OUT instruction is executed directly before an interrupt occurs and the stack pointer is
located in external ram, the instruction will be executed twice. In some cases this will cause a problem, for
example:
- If reading SREG it will appear that the I-flag is cleared.
- If writing to the PIN registers, the port will toggle twice.
- If reading registers with interrupt flags, the flags will appear to be cleared.
Problem Fix/Workaround
There are two application workarounds, where selecting one of them, will be omitting the issue:
- Replace IN and OUT with LD/LDS/LDD and ST/STS/STD instructions.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
32
- Use internal RAM for stack pointer.
6. EEPROM read from application code does not work in Lock Bit Mode 3
When the Memory Lock Bits LB2 and LB1 are programmed to mode 3, EEPROM read does not work from the
application code.
Problem Fix/Workaround
Do not set Lock Bit Protection Mode 3 when the application code needs to read from EEPROM.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]
2549QS–AVR–02/2014
33
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