ATMEGA48V-10MJ Atmel, ATMEGA48V-10MJ Datasheet - Page 227
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ATMEGA48V-10MJ
Manufacturer Part Number
ATMEGA48V-10MJ
Description
IC AVR MCU 4K 5V 10MHZ 32-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA48V-10MJ
Core Processor
AVR
Core Size
8-Bit
Speed
10MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ATMEGA48V-12MJ
ATMEGA48V-12MJ
ATMEGA48V-12MJ
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21.7.3
2545S–AVR–07/10
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
are zero or are masked to zero.
Figure 21-15. Data transfer in Slave Receiver mode
To initiate the Slave Receiver mode, TWAR and TWCR must be initialized as follows:
TWAR
value
Figure
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
SDA
SCL
21-15). All the status codes mentioned in this section assume that the prescaler bits
From master to slave
From slave to master
$08
S
TWA6
SLA
Device 1
RECEIVER
SLAVE
TWA5
R
MR
TRANSMITTER
Device 2
A or A
DATA
MASTER
$40
$48
$38
$68
A
A
A
$78
TWA4
Other master
Other master
n
continues
continues
Device’s Own Slave Address
P
$B0
Device 3
DATA
A
TWA3
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
........
$50
$38
To corresponding
states in slave mode
A
A
TWA2
Other master
Device n
DATA
continues
ATmega48/88/168
V
CC
$58
A
TWA1
R1
$10
P
R
S
R2
SLA
TWA0
W
R
TWGCE
MT
227
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