ATMEGA64A-ANR Atmel, ATMEGA64A-ANR Datasheet - Page 218

• Manufacturer Part Number: ATMEGA64A-ANR
• Description: IC MCU AVR 64K FLASH 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA64A-ANR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

21.7.3
8160C–AVR–07/09
Slave Receiver Mode
Figure 21-14. Formats and States in the Master Receiver Mode
In the Slave Receiver mode, a number of data bytes are received from a master transmitter (see
Figure
zero or are masked to zero.
Figure 21-15. Data Transfer in Slave Receiver Mode
SDA
SCL
Successfull
reception
from a slave
receiver
Next transfer
started with a
repeated start
condition
Not acknowledge
received after the
slave address
Arbitration lost in slave
address or data byte
Arbitration lost and
addressed as slave
21-15). All the status codes mentioned in this section assume that the prescaler bits are
Device 1
RECEIVER
From master to slave
From slave to master
$08
SLAVE
S
SLA
TRANSMITTER
Device 2
MASTER
R
MR
A or A
DATA
$40
$48
$38
$68
A
A
A
$78
Device 3
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
........
$50
$38
To corresponding
states in slave mode
A
A
Device n
Other master
DATA
continues
V
CC
$58
A
$10
ATmega64A
R1
P
R
S
SLA
R2
W
R
MT
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