ATmega1280 Atmel Corporation, ATmega1280 Datasheet - Page 93

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ATmega1280

Manufacturer Part Number
ATmega1280
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATmega1280

Flash (kbytes)
128 Kbytes
Pin Count
100
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
86
Ext Interrupts
32
Usb Speed
No
Usb Interface
No
Spi
5
Twi (i2c)
1
Uart
4
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
8
Eeprom (bytes)
4096
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
6
Output Compare Channels
16
Input Capture Channels
4
Pwm Channels
15
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes

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2549N–AVR–05/11
• OC4B – Port H, Bit 4
OC4B, Output Compare Match B output: The PH4 pin can serve as an external output for the
Timer/Counter2 Output Compare B. The pin has to be configured as an output (DDH4 set) to
serve this function. The OC4B pin is also the output pin for the PWM mode timer function.
• OC4A – Port H, Bit 3
OC4C, Output Compare Match A output: The PH3 pin can serve as an external output for the
Timer/Counter4 Output Compare A. The pin has to be configured as an output (DDH3 set) to
serve this function. The OC4A pin is also the output pin for the PWM mode timer function.
• XCK2 – Port H, Bit 2
XCK2, USART2 External Clock: The Data Direction Register (DDH2) controls whether the clock
is output (DDH2 set) or input (DDH2 cleared). The XC2K pin is active only when the USART2
operates in synchronous mode.
• TXD2 – Port H, Bit 1
TXD2, USART2 Transmit Pin.
• RXD2 – Port H, Bit 0
RXD2, USART2 Receive pin: Receive Data (Data input pin for the USART2). When the
USART2 Receiver is enabled, this pin is configured as an input regardless of the value of DDH0.
When the USART2 forces this pin to be an input, a logical on in PORTH0 will turn on the internal
pull-up.
Table 13-25. Overriding Signals for Alternate Functions in PH7:PH4
Signal Name
DIEOE
DIEOV
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
AIO
DI
T4 INPUT
PH7/T4
0
0
0
0
0
0
0
0
ATmega640/1280/1281/2560/2561
OC2B ENABLE
PH6/OC2B
OC2B
0
0
0
0
0
0
0
OC4C ENABLE
PH5/OC4C
OC4C
0
0
0
0
0
0
0
OC4B ENABLE
PH4/OC4B
OC4B
0
0
0
0
0
0
0
93

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