ATMEL ATMEGA1281V 8-bit microcontroller with 64k/128k/256k bytes in-system programmable flash Datasheet

Features
• High Performance, Low Power AVR® 8-Bit Microcontroller
• Advanced RISC Architecture
•
•
•
•
•
•
•
•
– 135 Powerful Instructions – Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 16 MIPS Throughput at 16 MHz
– On-Chip 2-cycle Multiplier
Non-volatile Program and Data Memories
– 64K/128K/256K Bytes of In-System Self-Programmable Flash
Endurance: 10,000 Write/Erase Cycles
– Optional Boot Code Section with Independent Lock Bits
In-System Programming by On-chip Boot Program
True Read-While-Write Operation
– 4K Bytes EEPROM
Endurance: 100,000 Write/Erase Cycles
– 8K Bytes Internal SRAM
– Up to 64K Bytes Optional External Memory Space
– Programming Lock for Software Security
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
– 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
Special Microcontroller Features
– 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:
– -40°C to 85°C Industrial
Ultra-Low Power Consumption
– Active Mode: 1 MHz, 1.8V: 510 µA
– Power-down Mode: 0.1 µA at 1.8V
Speed Grade (see “Maximum speed vs. VCC” on page 377):
– ATmega640V/ATmega1280V/ATmega1281V:
0 - 4 MHz @ 1.8 - 5.5V, 0 - 8 MHz @ 2.7 - 5.5V
– ATmega2560V/ATmega2561V:
0 - 2 MHz @ 1.8 - 5.5V, 0 - 8 MHz @ 2.7 - 5.5V
– ATmega640/ATmega1280/ATmega1281:
0 - 8 MHz @ 2.7 - 5.5V, 0 - 16 MHz @ 4.5 - 5.5V
– ATmega2560/ATmega2561:
0 - 16 MHz @ 4.5 - 5.5V
8-bit
Microcontroller
with
64K/128K/256K
Bytes In-System
Programmable
Flash
ATmega640/V
ATmega1280/V
ATmega1281/V
ATmega2560/V
ATmega2561/V
Preliminary
Summary
2549KS–AVR–01/07
Pin Configurations
2
80
PA1 (AD1)
81
PA2 (AD2)
82
PJ7
83
PA0 (AD0)
84
GND
85
VCC
86
PK7 (ADC15/PCINT23)
87
PK5 (ADC13/PCINT21)
88
PK6 (ADC14/PCINT22)
89
PK3 (ADC11/PCINT19)
90
PK4 (ADC12/PCINT20)
91
PK1 (ADC9/PCINT17)
PK0 (ADC8/PCINT16)
92
PK2 (ADC10/PCINT18)
PF7 (ADC7/TDI)
93
PF5 (ADC5/TMS)
94
PF6 (ADC6/TDO)
95
PF3 (ADC3)
96
PF4 (ADC4/TCK)
97
PF1 (ADC1)
98
PF2 (ADC2)
AREF
100 99
PF0 (ADC0)
GND
AVCC
Figure 1. TQFP-pinout ATmega640/1280/2560
79
78
77
76
(OC0B) PG5
1
75
PA3 (AD3)
(RXD0/PCINT8) PE0
2
74
PA4 (AD4)
(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)
(SS/PCINT0) PB0
19
57
PC4 (A12)
(SCK/PCINT1) PB1
20
56
PC3 (A11)
(MOSI/PCINT2) PB2
21
55
PC2 (A10)
(MISO/PCINT3) PB3
22
54
PC1 (A9)
(OC2A/PCINT4) PB4
23
53
PC0 (A8)
(OC1A/PCINT5) PB5
24
52
PG1 (RD)
(OC1B/PCINT6) PB6
25
51
PG0 (WR)
INDEX CORNER
43
44
45
46
47
48
49
50
(T1) PD6
42
(T0) PD7
41
(ICP1) PD4
40
(XCK1) PD5
39
(TXD1/INT3) PD3
GND
XTAL2
38
(SDA/INT1) PD1
VCC
37
(RXD1/INT2) PD2
RESET
36
PL7
(TOSC2) PG3
(TOSC1) PG4
35
(SCL/INT0) PD0
(T4) PH7
34
PL6
33
(OC5C) PL5
32
(OC5B) PL4
31
(OC5A) PL3
30
(T5) PL2
29
(ICP5) PL1
28
XTAL1
27
(ICP4) PL0
26
(OC0A/OC1C/PCINT7) PB7
ATmega640/1280/2560
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
Figure 2. CBGA-pinout ATmega640/1280/2560
Top view
1
2
3
4
5
6
Bottom view
7
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. 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
3
2549KS–AVR–01/07
4
PF7 (ADC7/TDI)
GND
VCC
PA0 (AD0)
PA1 (AD1)
PA2 (AD2)
54
53
52
51
50
49
PF5 (ADC5/TMS)
57
PF6 (ADC6/TDO)
PF4 (ADC4/TCK)
58
55
PF3 (ADC3)
59
56
PF1 (ADC1)
PF2 (ADC2)
60
AREF
PF0 (ADC0)
62
63
61
AVCC
GND
(OC0B) PG5
1
48
PA3 (AD3)
(RXD0/PCINT8/PDI) PE0
2
47
PA4 (AD4)
(TXD0/PDO) PE1
3
46
PA5 (AD5)
(XCK0/AIN0) PE2
4
45
PA6 (AD6)
(OC3A/AIN1) PE3
5
44
PA7 (AD7)
(OC3B/INT4) PE4
6
43
PG2 (ALE)
(OC3C/INT5) PE5
7
42
PC7 (A15)
(T3/INT6) PE6
8
41
PC6 (A14)
(ICP3/CLKO/INT7) PE7
9
40
PC5 (A13)
(SS/PCINT0) PB0
10
39
PC4 (A12)
(SCK/ PCINT1) PB1
11
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:
Disclaimer
64
Figure 3. Pinout ATmega1281/2561
INDEX CORNER
27
28
29
30
31
32
(RXD1/INT2) PD2
(TXD1/INT3) PD3
(ICP1) PD4
(XCK1) PD5
(T1) PD6
(T0) PD7
23
26
22
XTAL2
(SDA/INT1) PD1
21
VCC
GND
25
20
RESET
24
19
(TOSC1) PG4
XTAL1
18
(TOSC2) PG3
(SCL/INT0) PD0
17
(OC0A/OC1C/PCINT7) PB7
ATmega1281/2561
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.
Typical values contained in this datasheet are based on simulations and characterization of other AVR microcontrollers manufactured on the same process technology. Min.
and Max values will be available after the device is characterized.
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
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.
Block Diagram
Figure 4. Block Diagram
PF7..0
PK7..0
PORT F (8)
PORT K (8)
PJ7..0
PE7..0
VCC
RESET
GND
Power
Supervision
POR / BOD &
RESET
PORT J (8)
PORT E (8)
Watchdog
Timer
Watchdog
Oscillator
Analog
Comparator
JTAG
A/D
Converter
EEPROM
Internal
Bandgap reference
USART 0
XTAL1
Oscillator
Circuits /
Clock
Generation
16bit T/C 3
USART 3
16bit T/C 5
XTAL2
CPU
PA7..0
PORT A (8)
16bit T/C 4
USART 1
PG5..0
PORT G (6)
XRAM
PC7..0
PORT C (8)
TWI
FLASH
SPI
SRAM
16bit T/C 1
8bit T/C 0
USART 2
8bit 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
5
2549KS–AVR–01/07
The 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.
The ATmega640/1280/1281/2560/2561 provides the following features: 64K/128K/256K
bytes of In-System Programmable Flash with Read-While-Write capabilities, 4K bytes
EEPROM, 8K bytes 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, 4 USARTs, a byte oriented 2-wire Serial Interface, a 16-channel, 10bit 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.
The device is manufactured using Atmel’s 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-Program mable Flash on a monolithic ch ip, 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.
6
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
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 summarizes the different configurations for the six devices.
Table 2. 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.
GND
Ground.
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 91.
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 92.
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
ATmega640/1280/1281/2560/2561 as listed on page 95.
Port D (PD7..PD0)
features
of
the
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
7
2549KS–AVR–01/07
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 97.
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 99.
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.
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 105.
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 107.
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 109.
Port K (PK7..PK0)
8
Port K serves as analog inputs to the A/D Converter.
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
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 111.
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 113.
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 Table
26 on page 58. Shorter pulses are not guaranteed to generate a reset.
XTAL1
Input to the inverting Oscillator amplifier and input to the internal clock operating circuit.
XTAL2
Output from the inverting Oscillator amplifier.
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.
AREF
This is the analog reference pin for the A/D Converter.
Resources
A comprehensive set of development tools and application notes, and datasheets are
available for download on http://www.atmel.com/avr.
9
2549KS–AVR–01/07
Register Summary
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(0x1FF)
Reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
10
...
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
(0x130)
UCSR3A
-
page 227
USART3 Baud Rate Register High Byte
page 231
USART3 Baud Rate Register Low Byte
-
-
-
UMSEL30
UPM31
UPM30
TXCIE3
UDRIE3
RXEN3
RXC3
TXC3
UDRE3
Page
page 231
-
-
-
USBS3
UCSZ31
UCSZ30
UCPOL3
TXEN3
UCSZ32
RXB83
TXB83
page 243
FE3
DOR3
UPE3
U2X3
MPCM3
page 242
page 244
(0x12F)
Reserved
-
-
-
-
-
-
-
-
(0x12E)
Reserved
-
-
-
-
-
-
-
-
(0x12D)
OCR5CH
Timer/Counter5 - Output Compare Register C High Byte
page 167
(0x12C)
OCR5CL
Timer/Counter5 - Output Compare Register C Low Byte
page 167
(0x12B)
OCR5BH
Timer/Counter5 - Output Compare Register B High Byte
page 167
(0x12A)
OCR5BL
Timer/Counter5 - Output Compare Register B Low Byte
page 167
(0x129)
OCR5AH
Timer/Counter5 - Output Compare Register A High Byte
page 167
(0x128)
OCR5AL
Timer/Counter5 - Output Compare Register A Low Byte
page 167
(0x127)
ICR5H
Timer/Counter5 - Input Capture Register High Byte
page 168
(0x126)
ICR5L
Timer/Counter5 - Input Capture Register Low Byte
page 168
(0x125)
TCNT5H
Timer/Counter5 - Counter Register High Byte
page 165
(0x124)
TCNT5L
Timer/Counter5 - Counter Register Low Byte
(0x123)
Reserved
-
-
-
(0x122)
TCCR5C
FOC5A
FOC5B
FOC5C
-
-
-
-
-
page 164
(0x121)
TCCR5B
ICNC5
ICES5
-
WGM53
WGM52
CS52
CS51
CS50
page 162
page 160
-
-
page 165
-
-
-
(0x120)
TCCR5A
COM5A1
COM5A0
COM5B1
COM5B0
COM5C1
COM5C0
WGM51
WGM50
(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
page 118
(0x10A)
DDRL
DDL7
DDL6
DDL5
DDL4
DDL3
DDL2
DDL1
DDL0
page 118
(0x109)
PINL
PINL7
PINL6
PINL5
PINL4
PINL3
PINL2
PINL1
PINL0
page 118
(0x108)
PORTK
PORTK7
PORTK6
PORTK5
PORTK4
PORTK3
PORTK2
PORTK1
PORTK0
page 118
(0x107)
DDRK
DDK7
DDK6
DDK5
DDK4
DDK3
DDK2
DDK1
DDK0
page 118
page 118
(0x106)
PINK
PINK7
PINK6
PINK5
PINK4
PINK3
PINK2
PINK1
PINK0
(0x105)
PORTJ
PORTJ7
PORTJ6
PORTJ5
PORTJ4
PORTJ3
PORTJ2
PORTJ1
PORTJ0
page 118
(0x104)
DDRJ
DDJ7
DDJ6
DDJ5
DDJ4
DDJ3
DDJ2
DDJ1
DDJ0
page 118
(0x103)
PINJ
PINJ7
PINJ6
PINJ5
PINJ4
PINJ3
PINJ2
PINJ1
PINJ0
page 118
(0x102)
PORTH
PORTH7
PORTH6
PORTH5
PORTH4
PORTH3
PORTH2
PORTH1
PORTH0
page 117
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page
(0x101)
DDRH
DDH7
DDH6
DDH5
DDH4
DDH3
DDH2
DDH1
DDH0
page 117
(0x100)
PINH
PINH7
PINH6
PINH5
PINH4
PINH3
PINH2
PINH1
PINH0
page 117
(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
-
USART2 I/O Data Register
-
page 227
-
-
-
USART2 Baud Rate Register High Byte
page 231
-
-
-
-
-
-
(0xD4)
UBRR2L
(0xD3)
Reserved
-
-
(0xD2)
UCSR2C
UMSEL21
UMSEL20
UPM21
UPM20
USBS2
UCSZ21
UCSZ20
UCPOL2
(0xD1)
UCSR2B
RXCIE2
TXCIE2
UDRIE2
RXEN2
TXEN2
UCSZ22
RXB82
TXB82
page 243
(0xD0)
UCSR2A
RXC2
TXC2
UDRE2
FE2
DOR2
UPE2
U2X2
MPCM2
page 242
-
-
-
-
-
-
-
-
(0xCF)
Reserved
(0xCE)
UDR1
(0xCD)
UBRR1H
USART2 Baud Rate Register Low Byte
page 231
USART1 I/O Data Register
-
-
-
(0xCC)
UBRR1L
(0xCB)
Reserved
-
-
(0xCA)
UCSR1C
UMSEL11
UMSEL10
(0xC9)
UCSR1B
RXCIE1
TXCIE1
(0xC8)
UCSR1A
RXC1
TXC1
UDRE1
(0xC7)
Reserved
-
-
-
(0xC6)
UDR0
(0xC5)
UBRR0H
-
page 244
page 227
USART1 Baud Rate Register High Byte
page 231
USART1 Baud Rate Register Low Byte
page 231
-
-
-
-
-
UPM11
UPM10
USBS1
UCSZ11
UCSZ10
UCPOL1
UDRIE1
RXEN1
TXEN1
UCSZ12
RXB81
TXB81
page 243
FE1
DOR1
UPE1
U2X1
MPCM1
page 242
-
-
-
-
-
USART0 I/O Data Register
-
page 244
page 227
-
-
-
USART0 Baud Rate Register High Byte
page 231
-
-
-
-
-
-
(0xC4)
UBRR0L
(0xC3)
Reserved
-
-
USART0 Baud Rate Register Low Byte
page 231
(0xC2)
UCSR0C
UMSEL01
UMSEL00
UPM01
UPM00
USBS0
UCSZ01
UCSZ00
UCPOL0
(0xC1)
UCSR0B
RXCIE0
TXCIE0
UDRIE0
RXEN0
TXEN0
UCSZ02
RXB80
TXB80
page 243
(0xC0)
UCSR0A
RXC0
TXC0
UDRE0
FE0
DOR0
UPE0
U2X0
MPCM0
page 243
page 244
11
2549KS–AVR–01/07
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(0xBF)
Reserved
-
-
-
-
-
-
-
-
12
Page
(0xBE)
Reserved
-
-
-
-
-
-
-
(0xBD)
TWAMR
TWAM6
TWAM5
TWAM4
TWAM3
TWAM2
TWAM1
TWAM0
-
(0xBC)
TWCR
TWINT
TWEA
TWSTA
TWSTO
TWWC
TWEN
-
TWIE
(0xBB)
TWDR
(0xBA)
TWAR
TWA6
TWA5
TWA4
TWA3
TWA2
TWA1
TWA0
TWGCE
(0xB9)
TWSR
TWS7
TWS6
TWS5
TWS4
TWS3
-
TWPS1
TWPS0
(0xB8)
TWBR
(0xB7)
Reserved
-
-
-
-
-
-
-
-
(0xB6)
ASSR
-
EXCLK
AS2
TCN2UB
OCR2AUB
OCR2BUB
TCR2AUB
TCR2BUB
(0xB5)
Reserved
-
-
-
-
-
-
-
-
(0xB4)
OCR2B
Timer/Counter2 Output Compare Register B
(0xB3)
OCR2A
Timer/Counter2 Output Compare Register A
page 195
(0xB2)
TCNT2
Timer/Counter2 (8 Bit)
page 195
(0xB1)
TCCR2B
FOC2A
FOC2B
-
-
WGM22
CS22
CS21
CS20
page 194
(0xB0)
TCCR2A
COM2A1
COM2A0
COM2B1
COM2B0
-
-
WGM21
WGM20
page 195
(0xAF)
Reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2-wire Serial Interface Data Register
page 274
page 271
page 273
2-wire Serial Interface Bit Rate Register
page 273
page 272
page 271
page 188
page 195
(0xAE)
Reserved
(0xAD)
OCR4CH
Timer/Counter4 - Output Compare Register C High Byte
page 167
(0xAC)
OCR4CL
Timer/Counter4 - Output Compare Register C Low Byte
page 167
(0xAB)
OCR4BH
Timer/Counter4 - Output Compare Register B High Byte
page 166
(0xAA)
OCR4BL
Timer/Counter4 - Output Compare Register B Low Byte
page 166
(0xA9)
OCR4AH
Timer/Counter4 - Output Compare Register A High Byte
page 166
(0xA8)
OCR4AL
Timer/Counter4 - Output Compare Register A Low Byte
page 166
(0xA7)
ICR4H
Timer/Counter4 - Input Capture Register High Byte
page 168
(0xA6)
ICR4L
Timer/Counter4 - Input Capture Register Low Byte
page 168
(0xA5)
TCNT4H
Timer/Counter4 - Counter Register High Byte
page 165
(0xA4)
TCNT4L
(0xA3)
Reserved
-
-
-
Timer/Counter4 - Counter Register Low Byte
(0xA2)
TCCR4C
FOC4A
FOC4B
FOC4C
-
-
-
-
-
page 164
(0xA1)
TCCR4B
ICNC4
ICES4
-
WGM43
WGM42
CS42
CS41
CS40
page 162
(0xA0)
TCCR4A
COM4A1
COM4A0
COM4B1
COM4B0
COM4C1
COM4C0
WGM41
WGM40
page 160
(0x9F)
Reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
page 165
-
-
-
(0x9E)
Reserved
(0x9D)
OCR3CH
Timer/Counter3 - Output Compare Register C High Byte
page 166
(0x9C)
OCR3CL
Timer/Counter3 - Output Compare Register C Low Byte
page 166
(0x9B)
OCR3BH
Timer/Counter3 - Output Compare Register B High Byte
page 166
(0x9A)
OCR3BL
Timer/Counter3 - Output Compare Register B Low Byte
page 166
(0x99)
OCR3AH
Timer/Counter3 - Output Compare Register A High Byte
page 166
(0x98)
OCR3AL
Timer/Counter3 - Output Compare Register A Low Byte
page 166
(0x97)
ICR3H
Timer/Counter3 - Input Capture Register High Byte
page 168
(0x96)
ICR3L
Timer/Counter3 - Input Capture Register Low Byte
page 168
(0x95)
TCNT3H
Timer/Counter3 - Counter Register High Byte
page 165
(0x94)
TCNT3L
Timer/Counter3 - Counter Register Low Byte
(0x93)
Reserved
-
-
-
(0x92)
TCCR3C
FOC3A
FOC3B
FOC3C
-
-
-
-
-
page 164
(0x91)
TCCR3B
ICNC3
ICES3
-
WGM33
WGM32
CS32
CS31
CS30
page 162
page 160
-
-
page 165
-
-
-
(0x90)
TCCR3A
COM3A1
COM3A0
COM3B1
COM3B0
COM3C1
COM3C0
WGM31
WGM30
(0x8F)
Reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
(0x8E)
Reserved
(0x8D)
OCR1CH
Timer/Counter1 - Output Compare Register C High Byte
page 166
(0x8C)
OCR1CL
Timer/Counter1 - Output Compare Register C Low Byte
page 166
(0x8B)
OCR1BH
Timer/Counter1 - Output Compare Register B High Byte
page 166
(0x8A)
OCR1BL
Timer/Counter1 - Output Compare Register B Low Byte
page 166
(0x89)
OCR1AH
Timer/Counter1 - Output Compare Register A High Byte
page 166
(0x88)
OCR1AL
Timer/Counter1 - Output Compare Register A Low Byte
page 166
(0x87)
ICR1H
Timer/Counter1 - Input Capture Register High Byte
page 168
(0x86)
ICR1L
Timer/Counter1 - Input Capture Register Low Byte
page 168
(0x85)
TCNT1H
Timer/Counter1 - Counter Register High Byte
page 165
(0x84)
TCNT1L
Timer/Counter1 - Counter Register Low Byte
(0x83)
Reserved
-
-
-
(0x82)
TCCR1C
FOC1A
FOC1B
FOC1C
-
-
-
-
-
page 164
(0x81)
TCCR1B
ICNC1
ICES1
-
WGM13
WGM12
CS12
CS11
CS10
page 162
page 160
-
-
page 165
-
-
-
(0x80)
TCCR1A
COM1A1
COM1A0
COM1B1
COM1B0
COM1C1
COM1C0
WGM11
WGM10
(0x7F)
DIDR1
-
-
-
-
-
-
AIN1D
AIN0D
page 278
(0x7E)
DIDR0
ADC7D
ADC6D
ADC5D
ADC4D
ADC3D
ADC2D
ADC1D
ADC0D
page 300
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page
(0x7D)
DIDR2
ADC15D
ADC14D
ADC13D
ADC12D
ADC11D
ADC10D
ADC9D
ADC8D
page 300
(0x7C)
ADMUX
REFS1
REFS0
ADLAR
MUX4
MUX3
MUX2
MUX1
MUX0
page 294
(0x7B)
ADCSRB
-
ACME
-
-
MUX5
ADTS2
ADTS1
ADTS0
page 277,295,,299
(0x7A)
ADCSRA
ADEN
ADSC
ADATE
ADIF
ADIE
ADPS2
ADPS1
ADPS0
(0x79)
ADCH
(0x78)
ADCL
(0x77)
Reserved
(0x76)
(0x75)
ADC Data Register High byte
page 297
page 298
ADC Data Register Low byte
page 298
-
-
-
-
-
-
-
-
Reserved
-
-
-
-
-
-
-
-
XMCRB
XMBK
-
-
-
-
XMM2
XMM1
XMM0
(0x74)
XMCRA
SRE
SRL2
SRL1
SRL0
SRW11
SRW10
SRW01
SRW00
page 34
(0x73)
TIMSK5
-
-
ICIE5
-
OCIE5C
OCIE5B
OCIE5A
TOIE5
page 169
(0x72)
TIMSK4
-
-
ICIE4
-
OCIE4C
OCIE4B
OCIE4A
TOIE4
page 169
(0x71)
TIMSK3
-
-
ICIE3
-
OCIE3C
OCIE3B
OCIE3A
TOIE3
page 169
(0x70)
TIMSK2
-
-
-
-
-
OCIE2B
OCIE2A
TOIE2
page 197
(0x6F)
TIMSK1
-
-
ICIE1
-
OCIE1C
OCIE1B
OCIE1A
TOIE1
page 169
(0x6E)
TIMSK0
-
-
-
-
-
OCIE0B
OCIE0A
TOIE0
page 135
page 36
(0x6D)
PCMSK2
PCINT23
PCINT22
PCINT21
PCINT20
PCINT19
PCINT18
PCINT17
PCINT16
page 81
(0x6C)
PCMSK1
PCINT15
PCINT14
PCINT13
PCINT12
PCINT11
PCINT10
PCINT9
PCINT8
page 81
(0x6B)
PCMSK0
PCINT7
PCINT6
PCINT5
PCINT4
PCINT3
PCINT2
PCINT1
PCINT0
page 82
(0x6A)
EICRB
ISC71
ISC70
ISC61
ISC60
ISC51
ISC50
ISC41
ISC40
page 79
(0x69)
EICRA
ISC31
ISC30
ISC21
ISC20
ISC11
ISC10
ISC01
ISC00
page 78
(0x68)
PCICR
-
-
-
-
-
PCIE2
PCIE1
PCIE0
page 80
(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 66
Oscillator Calibration Register
page 48
0x3F (0x5F)
SREG
I
T
H
S
V
N
Z
C
page 12
0x3E (0x5E)
SPH
SP15
SP14
SP13
SP12
SP11
SP10
SP9
SP8
page 14
0x3D (0x5D)
SPL
SP7
SP6
SP5
SP4
SP3
SP2
SP1
SP0
page 14
0x3C (0x5C)
EIND
-
-
-
-
-
-
-
EIND0
page 15
0x3B (0x5B)
RAMPZ
-
-
-
-
-
-
RAMPZ1
RAMPZ0
page 15
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 66,76,115,314
0x34 (0x54)
MCUSR
-
-
-
JTRF
WDRF
BORF
EXTRF
PORF
page 314
0x33 (0x53)
SMCR
-
-
-
-
SM2
SM1
SM0
SE
page 51
0x32 (0x52)
Reserved
-
-
-
-
-
-
-
-
0x31 (0x51)
OCDR
OCDR7
OCDR6
OCDR5
OCDR4
OCDR3
OCDR2
OCDR1
OCDR0
page 307
0x30 (0x50)
ACSR
ACD
ACBG
ACO
ACI
ACIE
ACIC
ACIS1
ACIS0
page 277
0x2F (0x4F)
Reserved
-
-
-
-
-
-
-
-
0x2E (0x4E)
SPDR
0x2D (0x4D)
SPSR
SPIF
WCOL
-
-
-
-
-
SPI2X
page 207
0x2C (0x4C)
SPCR
SPIE
SPE
DORD
MSTR
CPOL
CPHA
SPR1
SPR0
page 206
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
0x27 (0x47)
OCR0A
Timer/Counter0 Output Compare Register A
page 134
0x26 (0x46)
TCNT0
Timer/Counter0 (8 Bit)
page 134
0x25 (0x45)
TCCR0B
FOC0A
FOC0B
-
-
WGM02
CS02
CS01
CS00
0x24 (0x44)
TCCR0A
COM0A1
COM0A0
COM0B1
COM0B0
-
-
WGM01
WGM00
page 130
0x23 (0x43)
GTCCR
TSM
-
-
-
-
-
PSRASY
PSRSYNC
page 173, 198
-
-
-
0x22 (0x42)
EEARH
0x21 (0x41)
EEARL
0x20 (0x40)
EEDR
0x1F (0x3F)
EECR
SPI Data Register
page 340
-
-
-
-
page 208
page 34
page 34
-
-
-
-
page 134
EEPROM Address Register High Byte
page 32
EEPROM Address Register Low Byte
page 32
EEPROM Data Register
-
-
EEPM1
EEPM0
EERIE
page 133
page 32
EEMPE
EEPE
EERE
page 32
0x1E (0x3E)
GPIOR0
0x1D (0x3D)
EIMSK
INT7
INT6
INT5
General Purpose I/O Register 0
INT4
INT3
INT2
INT1
INT0
page 79
page 34
0x1C (0x3C)
EIFR
INTF7
INTF6
INTF5
INTF4
INTF3
INTF2
INTF1
INTF0
page 80
13
2549KS–AVR–01/07
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page
0x1B (0x3B)
PCIFR
-
-
-
-
-
PCIF2
PCIF1
PCIF0
page 81
0x1A (0x3A)
TIFR5
-
-
ICF5
-
OCF5C
OCF5B
OCF5A
TOV5
page 169
0x19 (0x39)
TIFR4
-
-
ICF4
-
OCF4C
OCF4B
OCF4A
TOV4
page 170
0x18 (0x38)
TIFR3
-
-
ICF3
-
OCF3C
OCF3B
OCF3A
TOV3
page 170
0x17 (0x37)
TIFR2
-
-
-
-
-
OCF2B
OCF2A
TOV2
page 197
0x16 (0x36)
TIFR1
-
-
ICF1
-
OCF1C
OCF1B
OCF1A
TOV1
page 170
0x15 (0x35)
TIFR0
-
-
-
-
-
OCF0B
OCF0A
TOV0
page 135
0x14 (0x34)
PORTG
-
-
PORTG5
PORTG4
PORTG3
PORTG2
PORTG1
PORTG0
page 117
0x13 (0x33)
DDRG
-
-
DDG5
DDG4
DDG3
DDG2
DDG1
DDG0
page 117
0x12 (0x32)
PING
-
-
PING5
PING4
PING3
PING2
PING1
PING0
page 117
0x11 (0x31)
PORTF
PORTF7
PORTF6
PORTF5
PORTF4
PORTF3
PORTF2
PORTF1
PORTF0
page 116
0x10 (0x30)
DDRF
DDF7
DDF6
DDF5
DDF4
DDF3
DDF2
DDF1
DDF0
page 117
page 117
0x0F (0x2F)
PINF
PINF7
PINF6
PINF5
PINF4
PINF3
PINF2
PINF1
PINF0
0x0E (0x2E)
PORTE
PORTE7
PORTE6
PORTE5
PORTE4
PORTE3
PORTE2
PORTE1
PORTE0
page 116
0x0D (0x2D)
DDRE
DDE7
DDE6
DDE5
DDE4
DDE3
DDE2
DDE1
DDE0
page 116
page 116
0x0C (0x2C)
PINE
PINE7
PINE6
PINE5
PINE4
PINE3
PINE2
PINE1
PINE0
0x0B (0x2B)
PORTD
PORTD7
PORTD6
PORTD5
PORTD4
PORTD3
PORTD2
PORTD1
PORTD0
page 116
0x0A (0x2A)
DDRD
DDD7
DDD6
DDD5
DDD4
DDD3
DDD2
DDD1
DDD0
page 116
page 116
0x09 (0x29)
PIND
PIND7
PIND6
PIND5
PIND4
PIND3
PIND2
PIND1
PIND0
0x08 (0x28)
PORTC
PORTC7
PORTC6
PORTC5
PORTC4
PORTC3
PORTC2
PORTC1
PORTC0
page 116
0x07 (0x27)
DDRC
DDC7
DDC6
DDC5
DDC4
DDC3
DDC2
DDC1
DDC0
page 116
page 116
0x06 (0x26)
PINC
PINC7
PINC6
PINC5
PINC4
PINC3
PINC2
PINC1
PINC0
0x05 (0x25)
PORTB
PORTB7
PORTB6
PORTB5
PORTB4
PORTB3
PORTB2
PORTB1
PORTB0
page 115
0x04 (0x24)
DDRB
DDB7
DDB6
DDB5
DDB4
DDB3
DDB2
DDB1
DDB0
page 115
page 115
0x03 (0x23)
PINB
PINB7
PINB6
PINB5
PINB4
PINB3
PINB2
PINB1
PINB0
0x02 (0x22)
PORTA
PORTA7
PORTA6
PORTA5
PORTA4
PORTA3
PORTA2
PORTA1
PORTA0
page 115
0x01 (0x21)
DDRA
DDA7
DDA6
DDA5
DDA4
DDA3
DDA2
DDA1
DDA0
page 115
0x00 (0x20)
PINA
PINA7
PINA6
PINA5
PINA4
PINA3
PINA2
PINA1
PINA0
page 115
Note:
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.
14
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
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
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
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
BRNE
k
Branch if Not Equal
if (Z = 0) then PC ← PC + k + 1
None
1/2
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
1/2
BRGE
k
Branch if Greater or Equal, Signed
if (N ⊕ V= 0) then PC ← PC + k + 1
None
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
1/2
BRHC
k
Branch if Half Carry Flag Cleared
if (H = 0) then PC ← PC + k + 1
None
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
15
2549KS–AVR–01/07
Mnemonics
Operands
Description
Operation
Flags
#Clocks
BRVS
k
Branch if Overflow Flag is Set
if (V = 1) then PC ← PC + k + 1
None
1/2
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
None
1
DATA TRANSFER INSTRUCTIONS
MOV
Rd, Rr
Move Between Registers
MOVW
Rd, Rr
Copy Register Word
Rd ← Rr
Rd+1:Rd ← Rr+1:Rr
None
1
LDI
Rd, K
Load Immediate
Rd ← K
None
1
2
LD
Rd, X
Load Indirect
Rd ← (X)
None
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
2
LD
Rd, - Y
Load Indirect and Pre-Dec.
Y ← Y - 1, Rd ← (Y)
None
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
2
LDD
Rd, Z+q
Load Indirect with Displacement
Rd ← (Z + q)
None
LDS
Rd, k
Load Direct from SRAM
Rd ← (k)
None
2
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
2
ST
Y, Rr
Store Indirect
(Y) ← Rr
None
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
ST
Z+, Rr
Store Indirect and Post-Inc.
(Z) ← Rr, Z ← Z + 1
None
2
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
LPM
LPM
Rd, Z
LPM
Rd, Z+
ELPM
ELPM
16
Rd, Z
Load Program Memory and Post-Inc
Rd ← (Z), Z ← Z+1
None
3
Extended Load Program Memory
R0 ← (RAMPZ:Z)
None
3
Extended Load Program Memory
Rd ← (RAMPZ:Z)
None
3
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
Mnemonics
ELPM
Operands
Rd, Z+
SPM
Description
Operation
Flags
#Clocks
Extended Load Program Memory
Rd ← (RAMPZ:Z), RAMPZ:Z ←RAMPZ:Z+1
None
Store Program Memory
(Z) ← R1:R0
None
-
Rd ← P
None
1
3
IN
Rd, P
In Port
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
None
1
MCU CONTROL INSTRUCTIONS
NOP
No Operation
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.
17
2549KS–AVR–01/07
Ordering Information
ATmega640
Speed (MHz)(2)
Power Supply
8
16
Notes:
Ordering Code
Package(1)(3)
1.8 - 5.5V
ATmega640V-8AU
ATmega640V-8CU
100A
100C1
Industrial (-40°C to 85°C)
2.7 - 5.5V
ATmega640-16AU
ATmega640-16CU
100A
100C1
Industrial (-40°C to 85°C)
Operation Range
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. See “Maximum speed vs. VCC” on page 377.
3. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also
Halide free and fully Green.
Package Type
64A
64-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP)
64M2
64-pad, 9 x 9 x 1.0 mm Body, Quad Flat No-lead/Micro Lead Frame Package (QFN/MLF)
100A
100-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP)
100C1
100-ball, Chip Ball Grid Array (CBGA)
18
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
ATmega1281
Speed (MHz)(2)
Power Supply
8
16
Notes:
Ordering Code
Package(1)(3)
Operation Range
1.8 - 5.5V
ATmega1281V-8AU
ATmega1281V-8MU
64A
64M2
Industrial
(-40°C to 85°C)
2.7 - 5.5V
ATmega1281-16AU
ATmega1281-16MU
64A
64M2
Industrial
(-40°C to 85°C)
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. See “Maximum speed vs. VCC” on page 377.
3. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also
Halide free and fully Green.
Package Type
64A
64-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP)
64M2
64-pad, 9 x 9 x 1.0 mm Body, Quad Flat No-lead/Micro Lead Frame Package (QFN/MLF)
100A
100-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP)
100C1
100-ball, Chip Ball Grid Array (CBGA)
19
2549KS–AVR–01/07
ATmega1280
Speed (MHz)(2)
Power Supply
8
16
Notes:
Ordering Code
Package(1)(3)
1.8 - 5.5V
ATmega1280V-8AU
ATmega1280V-8CU
100A
100C1
Industrial (-40°C to 85°C)
2.7 - 5.5V
ATmega1280-16AU
ATmega1280-16AU
100A
100C1
Industrial (-40°C to 85°C)
Operation Range
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. See “Maximum speed vs. VCC” on page 377.
3. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also
Halide free and fully Green.
Package Type
64A
64-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP)
64M2
64-pad, 9 x 9 x 1.0 mm Body, Quad Flat No-lead/Micro Lead Frame Package (QFN/MLF)
100A
100-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP)
100C1
100-ball, Chip Ball Grid Array (CBGA)
20
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
ATmega2561
Speed (MHz)(2)
Power Supply
8
16
Notes:
Ordering Code
Package(1)(3)
Operation Range
1.8 - 5.5V
ATmega2561V-8AU
ATmega2561V-8MU
64A
64M2
Industrial
(-40°C to 85°C)
4.5 - 5.5V
ATmega2561-16AU
ATmega2561-16MU
64A
64M2
Industrial
(-40°C to 85°C)
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. See “Maximum speed vs. VCC” on page 377.
3. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also
Halide free and fully Green.
Package Type
64A
64-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP)
64M2
64-pad, 9 x 9 x 1.0 mm Body, Quad Flat No-lead/Micro Lead Frame Package (QFN/MLF)
100A
100-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP)
100C1
100-ball, Chip Ball Grid Array (CBGA)
21
2549KS–AVR–01/07
ATmega2560
Speed (MHz)(2)
Power Supply
8
16
Notes:
Ordering Code
Package(1)(3)
1.8 - 5.5V
ATmega2560V-8AU
ATmega2560V-8CU
100A
100C1
Industrial (-40°C to 85°C)
4.5 - 5.5V
ATmega2560-16AU
ATmega2560-16CU
100A
100C1
Industrial (-40°C to 85°C)
Operation Range
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. See “Maximum speed vs. VCC” on page 377.
3. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also
Halide free and fully Green.
Package Type
64A
64-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP)
64M2
64-pad, 9 x 9 x 1.0 mm Body, Quad Flat No-lead/Micro Lead Frame Package (QFN/MLF)
100A
100-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP)
100C1
100-ball, Chip Ball Grid Array (CBGA)
22
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
Packaging Information
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)
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.
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
0.17
–
0.27
C
0.09
–
0.20
L
0.45
–
0.75
e
NOTE
Note 2
Note 2
0.50 TYP
10/5/2001
R
2325 Orchard Parkway
San Jose, CA 95131
TITLE
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)
DRAWING NO.
100A
REV.
C
23
2549KS–AVR–01/07
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
R
24
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
REV.
A
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
64A
PIN 1
B
PIN 1 IDENTIFIER
E1
e
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 0.25 mm per side. Dimensions D1 and E1 are maximum
plastic body size dimensions including mold mismatch.
3. Lead coplanarity is 0.10 mm 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
10/5/2001
R
2325 Orchard Parkway
San Jose, CA 95131
TITLE
64A, 64-lead, 14 x 14 mm Body Size, 1.0 mm Body Thickness,
0.8 mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP)
DRAWING NO.
REV.
64A
B
25
2549KS–AVR–01/07
64M2
D
Marked Pin# 1 ID
E
C
SEATING PLANE
A1
TOP VIEW
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
–
0.02
0.05
0.18
0.25
0.30
A1
b
K
Option C
b
e
Pin #1
Notch
(0.20 R)
BOTTOM VIEW
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
NOTE
0.50 BSC
L
0.35
0.40
0.45
K
0.20
0.27
0.40
Note: 1. JEDEC Standard MO-220, (SAW Singulation) Fig. 1, VMMD.
2. Dimension and tolerance conform to ASMEY14.5M-1994.
5/25/06
R
26
TITLE
2325 Orchard Parkway
64M2, 64-pad, 9 x 9 x 1.0 mm Body, Lead Pitch 0.50 mm,
San Jose, CA 95131
7.65 mm Exposed Pad, Micro Lead Frame Package (MLF)
DRAWING NO.
64M2
REV.
D
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
Errata
ATmega640 rev. A
• Inaccurate ADC conversion in differential mode with 200x gain
• High current consumption in sleep mode
1.
Inaccurate ADC conversion in differential mode with 200x 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.
ATmega1280 rev. A
• Inaccurate ADC conversion in differential mode with 200x gain
• High current consumption in sleep mode
1.
Inaccurate ADC conversion in differential mode with 200x 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.
27
2549KS–AVR–01/07
ATmega1281 rev. A
• Inaccurate ADC conversion in differential mode with 200x gain
• High current consumption in sleep mode
1.
Inaccurate ADC conversion in differential mode with 200x 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.
ATmega2560 rev. E
No known errata.
ATmega2560 rev. D
Not sampled.
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.
ATmega2560 rev. B
Not sampled.
28
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
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.
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 work-arounds, 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.
29
2549KS–AVR–01/07
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.
ATmega2561 rev. E
No known errata.
ATmega2561 rev. D
Not sampled.
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.
ATmega2561 rev. B
Not sampled.
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.
30
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
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
- 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.
31
2549KS–AVR–01/07
Datasheet Revision
History
Please note that the referring page numbers in this section are referring to this document.The referring revision in this section are referring to the document revision.
Rev. 2549K-01/07
1.
2.
3.
4.
5.
6:
7.
8.
9.
10.
Updated Table 1 on page 3.
Updated “Pin Descriptions” on page 7.
Updated “Stack Pointer” on page 14.
Updated “Bit 1 – EEPE: EEPROM Programming Enable” on page 33.
Updated Assembly code example in “Watchdog Timer” on page 62.
Updated “EIMSK – External Interrupt Mask Register” on page 79.
Updated Bit description in “PCIFR – Pin Change Interrupt Flag Register”
on page 81.
Updated code example in “USART Initialization” on page 215.
Updated Figure 120 on page 288.
Updated “DC Characteristics” on page 374.
Rev. 2549J-09/06
1.
2.
3.
4.
5.
6.
Updated “Calibrated Internal RC Oscillator” on page 44.
Updated code example in “Moving Interrupts Between Application and
Boot Section” on page 74.
Updated “Timer/Counter Prescaler” on page 190.
Updated “Device Identification Register” on page 309.
Updated “Signature Bytes” on page 345.
Updated “Instruction Set Summary” on page 421.
Rev. 2549I-07/06
1.
2.
Updated Table 74 on page 130, Table 77 on page 131, Table 79 on page
132, Table 82 on page 149, Table 84 on page 161, Table 85 on page 161,
Table 89 on page 191, Table 92 on page 192 and Table 94 on page 193.
Updated “Fast PWM Mode” on page 151.
1.
2.
3.
Updated “Calibrated Internal RC Oscillator” on page 44.
Updated “OSCCAL – Oscillator Calibration Register” on page 48.
Added Table 172 on page 384.
1.
2.
3.
4.
5.
6.
7.
Updated “Features” on page 1.
Added Figure 2 on page 3, Table 1 on page 3.
Updated “Calibrated Internal RC Oscillator” on page 44.
Updated “Power Management and Sleep Modes” on page 50.
Updated note for Table 30 on page 67.
Updated Figure 121 on page 289 and Figure 122 on page 289.
Updated “Setting the Boot Loader Lock Bits by SPM” on page 330.
Rev. 2549H-06/06
Rev. 2549G-06/06
32
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
ATmega640/1280/1281/2560/2561
8.
9.
10.
Updated “Ordering Information” on page 18.
Added Package information “100C1” on page 24.
Updated “Errata” on page 27.
1.
Updated Figure 15 on page 28, Figure 16 on page 29 and Figure 17 on
page 29.
Updated Table 88 on page 191 and Table 89 on page 191.
Updated Features in “ADC – Analog to Digital Converter” on page 279.
Updated “Fuse Bits” on page 343.
Rev. 2549F-04/06
2.
3.
4.
Rev. 2549E-04/06
1.
2.
3.
4.
5.
5.
6.
Updated “Features” on page 1.
Updated Table 27 on page 60.
Updated note for Table 27 on page 60.
Updated “Bit 6 – ACBG: Analog Comparator Bandgap Select” on page
277.
Updated “Prescaling and Conversion Timing” on page 282.
Updated “Maximum speed vs. VCC” on page 377.
Updated “Ordering Information” on page 18.
Rev. 2549D-12/05
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Advanced Information Status changed to Preliminary.
Changed number of I/O Ports from 51 to 54.
Updatet typos in “TCCR0A – Timer/Counter Control Register A” on page
130.
Updated Features in “ADC – Analog to Digital Converter” on page 279.
Updated Operation in“ADC – Analog to Digital Converter” on page 279
Updated Stabilizing Time in “Changing Channel or Reference Selection”
on page 286.
Updated Figure 113 on page 280, Figure 121 on page 289, Figure 122 on
page 289.
Updated Text in “ADCSRB – ADC Control and Status Register B” on page
295.
Updated Note for Table 4 on page 41, Table 51 on page 99, Table 128 on
page 294 and Table 131 on page 299.
Updated Table 170 on page 382 and Table 171 on page 383.
Updated “Filling the Temporary Buffer (Page Loading)” on page 329.
Updated “Typical Characteristics” on page 390.
Updated “Packaging Information” on page 23.
Updated “Errata” on page 27.
Rev. 2549C-09/05
1.
2.
3.
Updated Speed Grade in section “Features” on page 1.
Added “Resources” on page 9.
Updated “SPI – Serial Peripheral Interface” on page 199. In Slave mode,
low and high period SPI clock must be larger than 2 CPU cycles.
33
2549KS–AVR–01/07
4.
5.
6.
7.
8.
Updated “Bit Rate Generator Unit” on page 251.
Updated “Maximum speed vs. VCC” on page 377.
Updated “Ordering Information” on page 18.
Updated “Packaging Information” on page 23. Package 64M1 replaced by
64M2.
Updated “Errata” on page 27.
1.
2.
3.
4.
JTAG ID/Signature for ATmega640 updated: 0x9608.
Updated Table 43 on page 94.
Updated “Serial Programming Instruction set” on page 359.
Updated “Errata” on page 27.
1.
Initial version.
Rev. 2549B-05/05
Rev. 2549A-03/05
34
ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07
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