ATMEGA1281-16MU Atmel, ATMEGA1281-16MU Datasheet - Page 86
![IC MCU AVR 128K FLASH 64-QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
ATMEGA1281-16MU
Manufacturer Part Number
ATMEGA1281-16MU
Description
IC MCU AVR 128K FLASH 64-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA1281-16MU
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-MLF®, 64-QFN
Processor Series
ATMEGA128x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
8 KB
Interface Type
2-Wire, SPI, UART
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
54
Number Of Timers
6
Operating Supply Voltage
4.5 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
On-chip Adc
10 bit, 8 channel
For Use With
ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFPATAVRDB101 - MODULE DISPLAY LCD/RGB BACKLIGHT770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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12.3.5
2549M–AVR–09/10
Alternate Functions of Port E
The Port E pins with alternate functions are shown in
Table 12-15. Port E Pins Alternate Functions
Note:
• INT7/ICP3/CLKO – Port E, Bit 7
INT7, External Interrupt source 7: The PE7 pin can serve as an external interrupt source.
ICP3, Input Capture Pin 3: The PE7 pin can act as an input capture pin for Timer/Counter3.
CLKO - Divided System Clock: The divided system clock can be output on the PE7 pin. The
divided system clock will be output if the CKOUT Fuse is programmed, regardless of the
PORTE7 and DDE7 settings. It will also be output during reset.
• INT6/T3 – Port E, Bit 6
INT6, External Interrupt source 6: The PE6 pin can serve as an external interrupt source.
T3, Timer/Counter3 counter source.
• INT5/OC3C – Port E, Bit 5
INT5, External Interrupt source 5: The PE5 pin can serve as an External Interrupt source.
OC3C, Output Compare Match C output: The PE5 pin can serve as an External output for the
Timer/Counter3 Output Compare C. The pin has to be configured as an output (DDE5 set “one”)
to serve this function. The OC3C pin is also the output pin for the PWM mode timer function.
Port Pin
PE7
PE6
PE5
PE4
PE3
PE2
PE1
PE0
1. Only for
MISO/MOSI pins.
(External Interrupt 7 Input, Timer/Counter3 Input Capture Trigger or Divided System Clock)
(External Interrupt 5 Input or Output Compare and PWM Output C for Timer/Counter3)
(External Interrupt4 Input or Output Compare and PWM Output B for Timer/Counter3)
(Analog Comparator Negative Input or Output Compare and PWM Output A for
ATmega1281/2561
(Programming Data Input, USART0 Receive Pin or Pin Change Interrupt 8)
(Analog Comparator Positive Input or USART0 external clock input/output)
(External Interrupt 6 Input or Timer/Counter3 Clock Input)
(Programming Data Output or USART0 Transmit Pin)
ATmega640/1280/1281/2560/2561
. For
ATmega640/1280/2560
PDI
Alternate Function
INT7/ICP3/CLK0
Timer/Counter3)
(1)
PDO
INT5/OC3C
INT4/OC3B
AIN1/OC3A
AIN0/XCK0
/RXD0/PCINT8
INT6/ T3
(1)
Table
/TXD0
12-15.
these functions are placed on
86
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