ATMEGA1281-16AU Atmel, ATMEGA1281-16AU Datasheet - Page 34

• Manufacturer Part Number: ATMEGA1281-16AU
• Description: IC MCU AVR 128K FLASH 64-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA1281-16AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Cpu Family: ATmega
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 16MHz
• Interface Type: 2-Wire/SPI/USART
• Total Internal Ram Size: 8KB
• # I/os (max): 54
• Number Of Timers - General Purpose: 6
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: TQFP
• Processor Series: ATMEGA128x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 8 KB
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 54
• Number Of Timers: 6
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATAVRRZ541, ATAVRRAVEN, ATAVRRZRAVEN, ATAVRRZUSBSTICK, ATAVRISP2, ATAVRRZ201
• Minimum Operating Temperature: - 40 C
• Controller Family/series: AVR MEGA
• No. Of I/o's: 54
• Eeprom Memory Size: 4KB
• Ram Memory Size: 8KB
• Cpu Speed: 16MHz
• Rohs Compliant: Yes
• For Use With: ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFPATAVRDB101 - MODULE DISPLAY LCD/RGB BACKLIGHT770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

11. Datasheet Revision History
11.1
11.2
2549MS–AVR–09/10
Rev. 2549M-09/10
Rev. 2549L-08/07
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.
1.
2.
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1.
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9.
Updated typos in
285.
Note is added below
The values for “typical characteristics” in
Table 30-8 on page
Units for tRST and tBOD in
from “ns” to “µs”.
The figure text for
Text in first column in
“Fuse Low Byte” to “Extended Fuse Byte”.
The text in
The value of the inductor in
page 285
“Port A” has been changed into “Port K” in the first paragraph of
tures” on page
Minimum wait delay for tWD_EEPROM in
been changed from 9.0 ms to 3.6 ms
Dimension A3 is added in
Several cross-references are corrected.
“COM0A1:0” on page
Corrected some Figure and Table numbering.
Updated
Updated note in
Updated
Updated typos in
Updated
Updated
Added
Updated
Updated
Updated ordering code in
“System and Reset Characteristics” on page
Table 9-3 on page
Section 9.6 “Low Frequency Crystal Oscillator” on page
“Clock Characteristics” on page 371
“External Clock Drive” on page
“SPI Timing Characteristics” on page
“ADC Characteristics – Preliminary Data” on page
has been changed into 10 µH.
“Power Reduction Register” on page 54
275.
Table 9-11 on page
“DC Characteristics” on page 367
Table 30-2 on page 371
Figure 25-9 on page 285
377, has been rounded.
Table 1-1 on page
130
ATmega640/1280/1281/2560/2561
Table 29-3 on page 336
“ATmega640” on page
“64M2” on page
is corrected to “COM0B1:0”.
43,
Figure 25-9 on page 285
Table 30-3 on page 372
Table 9-5 on page
47.
3.
371.
has been changed.
28.
Table 29-16 on page 351
and in
Table 30-7 on page 376
374.
has been changed from
44,
20.
Figure 25-10 on page
has been changed.
Table 9-9 on page
372.
have been changed
and
Figure 25-10 on
376.
45.
“Fea-
and
has
47.
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