ATmega1284PR231 Atmel Corporation, ATmega1284PR231 Datasheet - Page 34
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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7.1.2
7.1.2.1
8111C–MCU Wireless–09/09
Basic Operating Mode Description
P_ON - Power-On after V
pin 8 (/RST). A successful state change can be verified by reading the radio transceiver status
from register 0x01 (TRX_STATUS).
If TRX_STATUS = 0x1F (STATE_TRANSITION_IN_PROGRESS) the AT86RF231 is on a state
transition. Do not try to initiate a further state change while the radio transceiver is in
STATE_TRANSITION_IN_PROGRESS.
Pin SLP_TR is a multifunctional pin, refer to
(SLP_TR)” on page
causes the following state transitions:
Pin 8 (/RST) causes a reset of all registers (register bits CLKM_CTRL are shadowed, for details
refer to
transceiver into TRX_OFF state. However, if the device was in P_ON state it remains in the
P_ON state.
For all states except SLEEP, the state change commands FORCE_TRX_OFF or TRX_OFF lead
to a transition into TRX_OFF state. If the radio transceiver is in active receive or transmit states
(BUSY_*), the command FORCE_TRX_OFF interrupts these active processes, and forces an
immediate transition to TRX_OFF. In contrast a TRX_OFF command is stored until an active
state (receiving or transmitting) has been finished. After that the transition to TRX_OFF is
performed.
For a fast transition from receive or active transmit states to PLL_ON state the command
FORCE_PLL_ON is provided. In contrast to FORCE_TRX_OFF this command does not disable
the PLL and the analog voltage regulator AVREG. It is not available in states SLEEP, P_ON,
RESET, TRX_OFF, and all *_NOCLK states.
The completion of each requested state change shall always be confirmed by reading the regis-
ter bits TRX_STATUS (register 0x01, TRX_STATUS).
When the external supply voltage (V
goes into the P_ON state performing an on-chip reset. The crystal oscillator is activated and the
default 1 MHz master clock is provided at pin 17 (CLKM) after the crystal oscillator has stabi-
lized. CLKM can be used as a clock source to the microcontroller. The SPI interface and digital
voltage regulator are enabled.
The on-chip power-on-reset sets all registers to their default values. A dedicated reset signal
from the microcontroller at pin 8 (/RST) is not necessary, but recommended for hardware / soft-
ware synchronization reasons.
Whereas the falling edge of pin SLP_TR causes the following state transitions:
• TRX_OFF
• RX_ON
• PLL_ON
• SLEEP
• RX_ON_NOCLK
Section 9.6.4 “Master Clock Signal Output (CLKM)” on page
DD
27. Dependent on the radio transceiver state, a rising edge of pin SLP_TR
⇒
⇒
⇒
⇒
⇒
DD
SLEEP
RX_ON_NOCLK
BUSY_TX
TRX_OFF
RX_ON
) is firstly applied to the AT86RF231, the radio transceiver
Section 6.5 “Sleep/Wake-up and Transmit Signal
(level sensitive)
(level sensitive)
(level sensitive)
(level sensitive)
117) and forces the radio
AT86RF231
34
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