ATmega2561R212 Atmel Corporation, ATmega2561R212 Datasheet - Page 78
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ATmega2561R212
Manufacturer Part Number
ATmega2561R212
Description
Manufacturer
Atmel Corporation
Specifications of ATmega2561R212
Flash (kbytes)
256 Kbytes
Max. Operating Frequency
16 MHz
Max I/o Pins
54
Spi
3
Twi (i2c)
1
Uart
2
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Crypto Engine
AES
Sram (kbytes)
8
Eeprom (bytes)
4096
Operating Voltage (vcc)
1.8 to 3.6
Timers
6
Frequency Band
700/800/900MHz
Max Data Rate (mb/s)
1
Antenna Diversity
No
External Pa Control
Yes
Power Output (dbm)
10
Receiver Sensitivity (dbm)
-110
Receive Current Consumption (ma)
9.0
Transmit Current Consumption (ma)
18 at 5dBm
Link Budget (dbm)
120
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13.3.1
2549N–AVR–05/11
Alternate Functions of Port A
The Port A has an alternate function as the address low byte and data lines for the External
Memory Interface.
Table 13-3.
Table 13-4
signals shown in
Table 13-4.
Note:
DIEOE
DIEOV
Signal
PUOE
DDOE
DDOV
Name
PUOV
PVOE
PVOV
AIO
DI
Port Pin
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
1. ADA is short for ADdress Active and represents the time when address is output. See
and
nal Memory Interface” on page 28
~(WR | ADA
PORTA7 • PUD
OUTPUT • WR
A7 • ADA | D7
Port A Pins Alternate Functions
Overriding Signals for Alternate Functions in PA7:PA4
Table 13-5 on page 79
D7 INPUT
WR | ADA
PA7/AD7
Figure 13-5 on page
SRE
SRE
SRE
0
0
–
(1)
) •
AD7 (External memory interface address and data bit 7)
AD6 (External memory interface address and data bit 6)
AD5 (External memory interface address and data bit 5)
AD4 (External memory interface address and data bit 4)
AD3 (External memory interface address and data bit 3)
AD2 (External memory interface address and data bit 2)
AD1 (External memory interface address and data bit 1)
AD0 (External memory interface address and data bit 0)
ATmega640/1280/1281/2560/2561
PORTA6 • PUD
OUTPUT • WR
~(WR | ADA) •
A6 • ADA | D6
WR | ADA
D6 INPUT
PA6/AD6
76.
relates the alternate functions of Port A to the overriding
SRE
SRE
SRE
0
0
–
for details.
Alternate Function
PORTA5 • PUD
OUTPUT • WR
~(WR | ADA) •
A5 • ADA | D5
WR | ADA
D5 INPUT
PA5/AD5
SRE
SRE
SRE
0
0
–
PORTA4 • PUD
OUTPUT • WR
~(WR | ADA) •
A4 • ADA | D4
D4 INPUT
WR | ADA
PA4/AD4
SRE
SRE
SRE
0
0
–
“Exter-
78
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