ATmega406 Atmel Corporation, ATmega406 Datasheet - Page 160
ATmega406
Manufacturer Part Number
ATmega406
Description
Manufacturer
Atmel Corporation
Specifications of ATmega406
Flash (kbytes)
40 Kbytes
Pin Count
48
Max. Operating Frequency
1 MHz
Cpu
8-bit AVR
# Of Touch Channels
8
Hardware Qtouch Acquisition
No
Max I/o Pins
18
Ext Interrupts
4
Usb Speed
No
Usb Interface
No
Twi (i2c)
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
12
Adc Speed (ksps)
1.9
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
2
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-30 to 85
I/o Supply Class
4.0 to 25
Operating Voltage (vcc)
4.0 to 25
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
3
Pwm Channels
2
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATmega406-1AAU
Manufacturer:
AT
Quantity:
20 000
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ATmega406
Slave Receiver Mode
Figure 25-15. 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
Figure
zero or are masked to zero.
Figure 25-16. Data Transfer in Slave Receiver Mode
To initiate the Slave Receiver mode, TWAR and TWCR must be initialized as follows:
SDA
SCL
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
25-16). All the status codes mentioned in this section assume that the prescaler bits are
Device 1
RECEIVER
From master to slave
From slave to master
$08
SLAVE
S
SLA
TRANSMITTER
Device 2
MASTER
R
MR
A or A
DATA
$40
$48
$38
$68
A
A
A
$78
Device 3
Other master
Other master
n
continues
continues
P
$B0
DATA
A
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
........
$50
$38
To corresponding
states in slave mode
A
A
Device n
Other master
DATA
continues
V
BUS
$58
A
$10
P
R
R1
S
SLA
R2
2548E–AVR–07/06
W
R
MT
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