ATmega1281R231 Atmel Corporation, ATmega1281R231 Datasheet - Page 228
ATmega1281R231
Manufacturer Part Number
ATmega1281R231
Description
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
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Table 22-9.
2549N–AVR–05/11
Max.
115.2K
230.4K
57.6K
76.8K
Baud
(bps)
250K
Rate
(1)
UBRR
0
–
–
–
–
Examples of UBRRn Settings for Commonly Used Oscillator Frequencies (Continued)
U2Xn = 0
62.5Kbps
f
osc
Error
8.5%
–
–
–
–
= 1.0000MHz
Note:
UBRR
1
1
0
–
–
U2Xn = 1
125Kbps
1. UBRR = 0, Error = 0.0%
-18.6%
Error
8.5%
8.5%
–
–
UBRR
1
1
0
–
–
115.2Kbps
U2Xn = 0
f
-25.0%
ATmega640/1280/1281/2560/2561
osc
Error
0.0%
0.0%
–
–
= 1.8432MHz
UBRR
1
3
2
0
–
230.4Kbps
U2Xn = 1
Error
0.0%
0.0%
0.0%
0.0%
–
UBRR
1
1
0
–
–
U2Xn = 0
125Kbps
f
-18.6%
osc
Error
8.5%
8.5%
–
–
= 2.0000MHz
UBRR
3
2
1
–
0
U2Xn = 1
250Kbps
Error
8.5%
8.5%
8.5%
0.0%
–
228
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