A000047 Arduino, A000047 Datasheet - Page 255

• Manufacturer Part Number: A000047
• Description: MCU, MPU & DSP Development Tools Mega2560
• Manufacturer: Arduino
• Series: -r
• Type: MCUr

Specifications of A000047

• Processor To Be Evaluated: ATmega2560
• Interface Type: USB, I2C, SPI
• Dimensions: 4 in x 2.1 in
• Operating Supply Voltage: 5 V
• Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: ATmega2560

23.7.2
2549M–AVR–09/10
Master Receiver Mode
Figure 23-12. Formats and States in the Master Transmitter Mode
In the Master Receiver mode, a number of data bytes are received from a Slave Transmitter
(see
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 23-13 on page
From master to slave
From slave to master
$08
S
SLA
256). In order to enter a Master mode, a START condition must be
W
ATmega640/1280/1281/2560/2561
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
$10
continues
R
P
P
S
SLA
W
R
255
MR