ATmega1284PR231 Atmel Corporation, ATmega1284PR231 Datasheet - Page 39

• 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

Figure 7-2.
7.1.4
7.1.4.1
8111C–MCU Wireless–09/09
TRX_STATE
SLP_TR
Typ. Processing Delay
Number of Octets
Frame Content
TRX_STATE
IRQ
Interrupt latency
IRQ
Basic Operating Mode Timing
Power-on Procedure
Timing of RX_START, AMI and TRX_END Interrupts in Basic Operating Mode
PLL_ON
-16
The following paragraphs depict state transitions and their timing properties. Timing figures are
explained in
page
The power-on procedure to P_ON state is shown in
Figure 7-3.
When the external supply voltage (V
ceiver enables the crystal oscillator (XOSC) and the internal 1.8 V voltage regulator for the
digital domain (DVREG). After t
(CLKM) at default rate of 1 MHz. If CLKM is available the SPI is already enabled and can be
used to control the transceiver. As long as no state change towards state TRX_OFF is per-
formed the radio transceiver remains in P_ON state.
0
Event
State
Block
Time
157.
16 µs
RX_ON
Preamble
Table 7-1 on page 42
Power-on Procedure to P_ON State
4
0
V
P_ON
XOSC, DVREG
DD
on
128
SFD
100
1
160
TR1
PHR
and
BUSY_TX
= 330 µs (typ.), the master clock signal is available at pin 17
1
t
TR1
192
DD
Section 12.4 “Digital Interface Timing Characteristics” on
) is firstly supplied to the AT86RF231, the radio trans-
IRQ_2 (RX_START)
MHR
t
IRQ
7
Figure 7-3 on page
400
BUSY_RX
IRQ_5 (AMI)
CLKM on
MSDU
t
IRQ
m
IRQ_3 (TRX_END)
192+(9+m)*32
FCS
39.
2
AT86RF231
PLL_ON
RX_ON
TRX_END
t
IRQ
Time [µs]
Time [µs]
39