ATMEGA1281-16MU Atmel, ATMEGA1281-16MU Datasheet - Page 92

• 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

12.3.8
2549M–AVR–09/10
Alternate Functions of Port H
Table 12-23. Overriding Signals for Alternate Functions in PG3:PG0
The Port H alternate pin configuration is as follows:
Table 12-24. Port H Pins Alternate Functions
• T4 – Port H, Bit 7
T4, Timer/Counter4 counter source.
• OC2B – Port H, Bit 6
OC2B, Output Compare Match B output: The PH6 pin can serve as an external output for the
Timer/Counter2 Output Compare B. The pin has to be configured as an output (DDH6 set) to
serve this function. The OC2B pin is also the output pin for the PWM mode timer function.
• OC4C – Port H, Bit 5
OC4C, Output Compare Match C output: The PH5 pin can serve as an external output for the
Timer/Counter4 Output Compare C. The pin has to be configured as an output (DDH5 set) to
serve this function. The OC4C pin is also the output pin for the PWM mode timer function.
Signal Name
DIEOE
DIEOV
Port Pin
PUOE
DDOE
DDOV
PUOV
PVOE
PVOV
PTOE
AIO
PH7
PH6
PH5
PH4
PH3
PH2
PH1
PH0
DI
T/C2 OSC OUTPUT
AS2 • EXCLK
AS2 • EXCLK
AS2 • EXCLK
PG3/TOSC2
0
0
0
0
–
0
–
OC4C (Output Compare and PWM Output C for Timer/Counter4)
OC2B (Output Compare and PWM Output B for Timer/Counter2)
OC4B (Output Compare and PWM Output B for Timer/Counter4)
OC4A (Output Compare and PWM Output A for Timer/Counter4)
ATmega640/1280/1281/2560/2561
T4 (Timer/Counter4 Clock Input)
XCK2 (USART2 External Clock)
PG2/ALE/A7
TXD2 (USART2 Transmit Pin)
RXD2 (USART2 Receive Pin)
SRE
SRE
SRE
ALE
Alternate Function
0
1
–
0
0
–
–
PG1/RD
SRE
SRE
SRE
RD
0
1
–
0
0
–
–
PG0/WR
SRE
SRE
SRE
WR
0
1
–
0
0
–
–
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