AT90USB1286 Atmel Corporation, AT90USB1286 Datasheet - Page 237
AT90USB1286
Manufacturer Part Number
AT90USB1286
Description
Manufacturer
Atmel Corporation
Specifications of AT90USB1286
Flash (kbytes)
128 Kbytes
Pin Count
64
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
48
Ext Interrupts
16
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
Twi (i2c)
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
8
Eeprom (bytes)
4096
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
4
Output Compare Channels
10
Input Capture Channels
1
Pwm Channels
9
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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Manufacturer
Quantity
Price
Part Number:
AT90USB1286
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Quantity:
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Part Number:
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Company:
Part Number:
AT90USB1286-AUR
Manufacturer:
Atmel
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747
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Part Number:
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716
Part Number:
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Manufacturer:
AT
Quantity:
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Part Number:
AT90USB1286-MUR
Manufacturer:
Atmel
Quantity:
4 932
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20.8.3
7593K–AVR–11/09
Slave Receiver Mode
Figure 20-15. 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
are zero or are masked to zero.
Figure 20-16. Data transfer in Slave Receiver mode
To initiate the Slave Receiver mode, TWAR and TWCR must be initialized as follows:
TWAR
value
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
Figure
20-16). All the status codes mentioned in this section assume that the prescaler bits
SDA
SCL
From master to slave
From slave to master
$08
S
TWA6
SLA
Device 1
RECEIVER
SLAVE
TWA5
R
MR
TRANSMITTER
A or A
Device 2
DATA
$40
$48
$38
$68
MASTER
A
A
A
TWA4
Device’s Own Slave Address
$78
Other master
Other master
n
continues
continues
P
$B0
DATA
Device 3
TWA3
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
........
TWA2
$50
$38
To corresponding
states in slave mode
A
A
Device n
Other master
DATA
continues
TWA1
V
CC
AT90USB64/128
$58
A
R1
TWA0
$10
R
P
S
R2
SLA
TWGCE
W
R
MT
237
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