ATmega644PR231 Atmel Corporation, ATmega644PR231 Datasheet - Page 48
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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Figure 7-8.
8111C–MCU Wireless–09/09
RX_ON_NOCLK
BUSY_RX_AACK
AACK_NOCLK
(Rx Listen State)
(Receive State)
BUSY_RX_
BUSY_RX
CLKM=OFF
CLKM=OFF
Extended Operating Mode State Diagram
Rejected
Detected
Detected
Detected
Finished
Frame
Frame
Trans-
(all modes except SLEEP)
action
SHR
SHR
SHR
FORCE_TRX_OFF
End
(Power-on after V
RX_AACK_ON
ON_NOCLK
(Rx Listen State)
RX_AACK_
XOSC=ON
P_ON
Pull=ON
RX_ON
CLKM=OFF
6
TRX_OFF
12
From / To
DD
)
1
8
TRX_OFF
(Clock State)
XOSC=ON
PLL_ON
7
Pull=OFF
RX_ON
2
5
9
TX_ARET_ON
Legend:
Blue:
Red:
Green: Event
PLL_ON
13
(PLL State)
(all modes except P_ON)
(Sleep State)
XOSC=OFF
SLEEP
Basic Operating Mode States
Extended Operating Mode States
Pull=OFF
SPI Write to Register TRX_STATE (0x02)
Control signals via IC Pin
4
3
/RST = H
14
SLP_TR=H
TX_START
SLP_TR=H
TX_START
FORCE_PLL_ON
TRX_OFF
From / To
Frame
see notes
10
Frame
End
or
End
or
11
BUSY_TX_ARET
/RST = L
(Transmit State)
(from all states)
BUSY_TX
AT86RF231
RESET
48
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