atmega32u4-16mu ATMEL Corporation, atmega32u4-16mu Datasheet - Page 266
atmega32u4-16mu
Manufacturer Part Number
atmega32u4-16mu
Description
Atmega32u4 8-bit Avr Microcontroller With 32k Bytes Of Isp Flash And Usb Controller
Manufacturer
ATMEL Corporation
Datasheet
1.ATMEGA32U4-16MU.pdf
(431 pages)
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21.8.4
266
ATmega32U4
Slave Transmitter Mode
Figure 21-17. 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 21-18. 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
21-18). All the status codes mentioned in this section assume that the prescaler bits
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
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 Two-Wire Serial Bus. The
prescaler bits are zero or masked to zero
Device n
$80
$90
A
A
V
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
7766A–AVR–03/08
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