ATmega1284RZAP Atmel Corporation, ATmega1284RZAP Datasheet - Page 221
ATmega1284RZAP
Manufacturer Part Number
ATmega1284RZAP
Description
Manufacturer
Atmel Corporation
Specifications of ATmega1284RZAP
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
No
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)
0.25
Antenna Diversity
No
External Pa Control
No
Power Output (dbm)
3
Receiver Sensitivity (dbm)
-101
Receive Current Consumption (ma)
16.0
Transmit Current Consumption (ma)
17.0
Link Budget (dbm)
104
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19.7.2
8059D–AVR–11/09
Master Receiver Mode
Figure 19-12. Formats and States in the Master Transmitter Mode
In the Master Receiver mode, a number of data bytes are received from a Slave Transmitter
(Slave see
must be transmitted. The format of the following address packet determines whether Master
Transmitter or Master Receiver mode is to be entered. If SLA+W is transmitted, MT mode is
entered, if SLA+R is transmitted, MR mode is entered. All the status codes mentioned in this
section assume that the prescaler bits are zero or are masked to zero.
Successfull
transmission
to a slave
receiver
Next transfer
started with a
repeated start
condition
Not acknowledge
received after the
slave address
Not acknowledge
received after a data
byte
Arbitration lost in slave
address or data byte
Arbitration lost and
addressed as slave
Figure 19-13 on page
From master to slave
From slave to master
$08
S
SLA
W
222). In order to enter a Master mode, a START condition
MT
A or A
DATA
$18
$20
$38
$68
A
A
A
$78
Other master
Other master
n
continues
continues
P
$B0
DATA
A
Any number of data bytes
and their associated acknowledge bits
This number (contained in TWSR) corresponds
to a defined state of the Two-Wire Serial Bus. The
prescaler bits are zero or masked to zero
A or A
$28
$30
$38
To corresponding
states in slave mode
A
A
Other master
ATmega1284P
$10
continues
R
P
P
S
SLA
W
R
MR
221
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