ATmega1284PR231 Atmel Corporation, ATmega1284PR231 Datasheet - Page 120

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ATmega1284PR231

Manufacturer Part Number
ATmega1284PR231
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATmega1284PR231

Flash (kbytes)
128 Kbytes
Max. Operating Frequency
20 MHz
Max I/o Pins
32
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)
16
Eeprom (bytes)
4096
Operating Voltage (vcc)
1.8 to 3.6
Timers
3
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
8111C–MCU Wireless–09/09
• Bit [3:0] - XTAL_TRIM
The register bits XTAL_TRIM control two internal capacitance arrays connected to pins XTAL1
and XTAL2. A capacitance value in the range from 0 pF to 4.5 pF is selectable with a resolution
of 0.3 pF.
Table 9-16.
Register Bit
XTAL_TRIM
Crystal Oscillator Trimming Capacitors
Value
0x0
0x1
0xF
...
Description
0.0 pF, trimming capacitors disconnected
0.3 pF trimming capacitor switched on
4.5 pF trimming capacitor switched on
AT86RF231
120

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