ATmega1284PR231 Atmel Corporation, ATmega1284PR231 Datasheet - Page 170
ATmega1284PR231
Manufacturer Part Number
ATmega1284PR231
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT86RF231.pdf
(198 pages)
2.ATMEGA1284PR231.pdf
(380 pages)
3.ATMEGA1284PR231.pdf
(20 pages)
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
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16.5.3
8059D–AVR–11/09
SPDR – SPI Data Register
The SPI Data Register is a read/write register used for data transfer between the Register File
and the SPI Shift Register. Writing to the register initiates data transmission. Reading the regis-
ter causes the Shift Register Receive buffer to be read.
Bit
0x2E (0x4E)
Read/Write
Initial Value
MSB
R/W
7
X
R/W
X
6
R/W
5
X
R/W
X
4
R/W
X
3
R/W
X
2
ATmega1284P
R/W
X
1
LSB
R/W
X
0
Undefined
SPDR
170
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