ATMEGA32A-MNR Atmel, ATMEGA32A-MNR Datasheet - Page 197

• Manufacturer Part Number: ATMEGA32A-MNR
• Description: IC MCU AVR 32K 16MHZ 44VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32A-MNR

• 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: 32
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K 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: 44-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

20.7.4
8155C–AVR–02/11
Slave Transmitter Mode
Figure 20-16. Formats and States in the Slave Receiver Mode
In the Slave Transmitter mode, a number of data bytes are transmitted to a master receiver (see
Figure
zero or are masked to zero.
Figure 20-17. Data Transfer in Slave Transmitter Mode
SDA
SCL
20-17). All the status codes mentioned in this section assume that the prescaler bits are
Reception of the own
slave address and one or
more data bytes. All are
acknowledged
Last data byte received
is not acknowledged
Arbitration lost as master
and addressed as slave
Reception of the general call
address and one or more data
bytes
Last data byte received is
not acknowledged
Arbitration lost as master and
addressed as slave by general call
From master to slave
From slave to master
TRANSMITTER
Device 1
SLAVE
S
SLA
Device 2
General Call
RECEIVER
MASTER
W
DATA
Device 3
$60
$68
$70
$78
A
A
A
A
n
A
DATA
DATA
........
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
Device n
$80
$90
A
A
V
CC
DATA
DATA
ATmega32A
R1
$80
$90
$88
$98
A
A
A
A
R2
P or S
P or S
P or S
P or S
$A0
$A0
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