ATmega1284PR231 Atmel Corporation, ATmega1284PR231 Datasheet - Page 176

• Manufacturer Part Number: ATmega1284PR231
• Manufacturer: Atmel Corporation

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
Note:
The content of the Frame Buffer has to be defined for Continuous Transmission PRBS mode or
CW mode. To measure the power spectral density (PSD) mask of the transmitter it is recom-
mended to use a random sequence of maximum length for the PSDU data.
To measure CW signals it is necessary to write either 0x00 or 0xFF to the Frame Buffer, for
details refer to
Table 20-2.
Step
10
11
12
13
14
15
16
17
18
19
20
12
8
9
(1)
(1)
(2)
Register Access
Register Access
Register Access
Register Access
Frame Buffer
Write Access
Register Access
Register Access
Register Access
Interrupt event
Register Access
Measurement
Register Access
RESET
1. Only required for CW mode, do not configure for PRBS mode.
2. Frame Buffer content depends on desired transmitter operation mode, either PRBS or CW
Action
Frame Buffer
Access
mode.
Frame Buffer Content for various Continuous Transmission Modulation Schemes
Table 20-2 on page
Frame Content
Random Sequence
0x00 (each byte)
0xFF (each byte)
0x036
0x0C
0x1C
0x1C
0x1C
0x0A
0x0F
0x01
0x02
0x02
176.
W
W
W
W
W
W
W
W
W
R
R
0xA7
0x08
0x0F
0x03
0x54
0x46
0x09
0x01
0x02
0x00
Verify TRX_OFF state
Enable Continuous Transmission Test Mode - step # 1
Enable High Data Rate Mode, 2 Mb/s
Configure High Data Rate Mode
Write PHR and PSDU data (even for CW mode), refer to
Table 20-2 on page
Enable Continuous Transmission Test Mode - step # 2
Enable Continuous Transmission Test Mode - step # 3
Enable PLL_ON state
Wait for IRQ_0 (PLL_LOCK)
Initiate Transmission, enter BUSY_TX state
Perform measurement
Disable Continuous Transmission Test Mode
Reset AT86RF231
Comment
modulated RF signal
f
f
CH
CH
- 0.5 MHz, CW signal
+ 0.5 MHz, CW signal
176.
AT86RF231
176