ATMEGA2561-16AI Atmel, ATMEGA2561-16AI Datasheet - Page 92
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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12.3.8
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
–
–
92
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