ATMEGA128-16AI Atmel, ATMEGA128-16AI Datasheet - Page 221

• Manufacturer Part Number: ATMEGA128-16AI
• Description: IC AVR MCU 128K 16MHZ 64-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA128-16AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• For Use With: ATSTK501 - ADAPTER KIT FOR 64PIN AVR MCU
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: Q1167170A

Slave Transmitter
Mode
2467V–AVR–02/11
Figure 101. 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 102. Data Transfer in Slave Transmitter Mode
To initiate the Slave Transmitter mode, TWAR and TWCR must be initialized as follows:
SDA
SCL
102). 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
General Call
Device 2
RECEIVER
MASTER
W
DATA
$60
$68
$70
$78
A
A
A
A
Device 3
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
........
$80
$90
Device n
A
A
V
CC
DATA
DATA
ATmega128
R1
$80
$90
$88
$98
A
A
A
A
P or S
P or S
P or S
P or S
$A0
$A0
R2
221