ATMEGA88-20MUR Atmel, ATMEGA88-20MUR Datasheet - Page 230

• Manufacturer Part Number: ATMEGA88-20MUR
• Description: MCU AVR 8K FLASH 20MHZ 32QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA88-20MUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K 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: *
• Cpu Family: ATmega
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 20MHz
• Interface Type: SPI/TWI/USART
• Total Internal Ram Size: 1KB
• # I/os (max): 23
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 32
• Package Type: MLF EP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

21.7.4
230
ATmega48/88/168
Slave Transmitter Mode
Figure 21-16. 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
are zero or are masked to zero.
Figure 21-17. Data Transfer in Slave Transmitter Mode
Figure
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
SDA
SCL
21-17). All the status codes mentioned in this section assume that the prescaler bits
From master to slave
From slave to master
TRANSMITTER
Device 1
S
SLAVE
SLA
General Call
Device 2
RECEIVER
MASTER
W
DATA
$60
$68
$70
$78
Device 3
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 2-Wire Serial Bus. The
prescaler bits are zero or masked to zero
Device n
$80
$90
V
A
A
CC
DATA
DATA
R1
$80
$88
$90
$98
A
A
A
A
R2
P or S
P or S
P or S
P or S
$A0
$A0
2545S–AVR–07/10