ATmega1281R231 Atmel Corporation, ATmega1281R231 Datasheet - Page 383

• Manufacturer Part Number: ATmega1281R231
• Manufacturer: Atmel Corporation

Specifications of ATmega1281R231

• Flash (kbytes): 128 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: 2.4 GHz
• Max Data Rate (mb/s): 2
• Antenna Diversity: Yes
• External Pa Control: Yes
• Power Output (dbm): 3
• Receiver Sensitivity (dbm): -101
• Receive Current Consumption (ma): 13.2
• Transmit Current Consumption (ma): 14.4
• Link Budget (dbm): 104

2549N–AVR–05/11
Figure 31-10. External Memory Timing (SRWn1 = 0, SRWn0 = 1)
Figure 31-11. External Memory Timing (SRWn1 = 1, SRWn0 = 0)
System Clock (CLK
System Clock (CLK
DA7:0 (XMBK = 0)
DA7:0 (XMBK = 0)
DA7:0
A15:8
CPU
ALE
WR
DA7:0
RD
A15:8
CPU
ALE
)
WR
RD
)
Prev. addr.
Prev. data
Prev. addr.
Prev. data
T1
T1
1
ATmega640/1280/1281/2560/2561
Address
Address
4
2
5
T2
6
1
3a
3b
Address
Address
4
2
XX
7
8
5
T2
6
13
3a
3b
10
XX
7
8
T3
13
10
Address
T3
Data
Address
12
Data
16
15
T4
9
Data
15
Data
16
12
9
T4
T5
11
11
T5
14
T6
14
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