ATmega644PR231 Atmel Corporation, ATmega644PR231 Datasheet - Page 112
ATmega644PR231
Manufacturer Part Number
ATmega644PR231
Description
Manufacturer
Atmel Corporation
Specifications of ATmega644PR231
Flash (kbytes)
64 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)
4
Eeprom (bytes)
2048
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
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8111C–MCU Wireless–09/09
• Bit 2 - DVDD_OK
This register bit indicates if the internal 1.8V regulated voltage supply DVDD has settled. The bit
is set to logic high, if DVREG_EXT = 1.
Table 9-8.
Note
• Bit [1:0] - Reserved
Register Bit
DVDD_OK
• While the reset value of this bit is 0, any practical access to the register is only possible when
DVREG is active. So this bit is normally always read out as 1.
Regulated Voltage Supply Control for Digital Building Blocks
Value
0
1
Description
Digital voltage regulator disabled or supply voltage not stable
Digital supply voltage has settled
AT86RF231
112
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