ATMEGA2561-16AI Atmel, ATMEGA2561-16AI Datasheet - Page 79
ATMEGA2561-16AI
Manufacturer Part Number
ATMEGA2561-16AI
Description
IC AVR MCU 256K 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA2561-16AI
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
256KB (128K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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12.3.2
2549M–AVR–09/10
Alternate Functions of Port B
Table 12-5.
The Port B pins with alternate functions are shown in
Table 12-6.
The alternate pin configuration is as follows:
• OC0A/OC1C/PCINT7, Bit 7
OC0A, Output Compare Match A output: The PB7 pin can serve as an external output for the
Timer/Counter0 Output Compare. The pin has to be configured as an output (DDB7 set “one”) to
serve this function. The OC0A pin is also the output pin for the PWM mode timer function.
OC1C, Output Compare Match C output: The PB7 pin can serve as an external output for the
Timer/Counter1 Output Compare C. The pin has to be configured as an output (DDB7 set (one))
to serve this function. The OC1C pin is also the output pin for the PWM mode timer function.
Port Pin
DIEOE
DIEOV
Signal
PUOE
PUOV
DDOE
DDOV
Name
PVOE
PVOV
AIO
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
DI
PORTA3 • PUD
OC1B/PCINT6 (Output Compare and PWM Output B for Timer/Counter1 or Pin Change
OC1A/PCINT5 (Output Compare and PWM Output A for Timer/Counter1 or Pin Change
OC2A/PCINT4 (Output Compare and PWM Output A for Timer/Counter2 or Pin Change
OUTPUT • WR
OC0A/OC1C/PCINT7 (Output Compare and PWM Output A for Timer/Counter0, Output
Overriding Signals for Alternate Functions in PA3:PA0
~(WR | ADA) •
Port B Pins Alternate Functions
A3 • ADA | D3
WR | ADA
D3 INPUT
PA3/AD3
MISO/PCINT3 (SPI Bus Master Input/Slave Output or Pin Change Interrupt 3)
MOSI/PCINT2 (SPI Bus Master Output/Slave Input or Pin Change Interrupt 2)
SRE
SRE
SRE
Compare and PWM Output C for Timer/Counter1 or Pin Change Interrupt 7)
0
0
–
SCK/PCINT1 (SPI Bus Serial Clock or Pin Change Interrupt 1)
SS/PCINT0 (SPI Slave Select input or Pin Change Interrupt 0)
ATmega640/1280/1281/2560/2561
PORTA2 • PUD
OUTPUT • WR
~(WR | ADA) •
A2• ADA | D2
D2 INPUT
WR | ADA
PA2/AD2
SRE
SRE
SRE
0
0
–
Alternate Functions
Interrupt 6)
Interrupt 5)
Interrupt 4)
Table
PORTA1 • PUD
OUTPUT • WR
~(WR | ADA) •
A1 • ADA | D1
WR | ADA
D1 INPUT
PA1/AD1
12-6.
SRE
SRE
SRE
0
0
–
PORTA0 • PUD
OUTPUT • WR
~(WR | ADA) •
A0 • ADA | D0
WR | ADA
D0 INPUT
PA0/AD0
SRE
SRE
SRE
0
0
–
79
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