ATxmega64A4U Atmel Corporation, ATxmega64A4U Datasheet - Page 270
ATxmega64A4U
Manufacturer Part Number
ATxmega64A4U
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega64A4U
Flash (kbytes)
64 Kbytes
Pin Count
44
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
Hardware Qtouch Acquisition
No
Max I/o Pins
34
Ext Interrupts
34
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
Twi (i2c)
2
Uart
5
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
12
Adc Resolution (bits)
12
Adc Speed (ksps)
2000
Analog Comparators
2
Resistive Touch Screen
No
Dac Channels
2
Dac Resolution (bits)
12
Temp. Sensor
Yes
Crypto Engine
AES/DES
Sram (kbytes)
4
Eeprom (bytes)
2048
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.6 to 3.6
Operating Voltage (vcc)
1.6 to 3.6
Fpu
No
Mpu / Mmu
no / no
Timers
5
Output Compare Channels
16
Input Capture Channels
16
Pwm Channels
16
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega64A4U-AU
Manufacturer:
ON
Quantity:
29 000
Company:
Part Number:
ATxmega64A4U-U
Manufacturer:
ATMEL
Quantity:
74
- Current page: 270 of 505
- Download datasheet (8Mb)
21.6.1.3
21.6.1.4
21.6.2
21.6.3
21.7
8331A–AVR–07/11
Enabling External Driver Interface
Receiving Data Packets
Transmitting Data Packets
Case S3: Collision
Case S4: STOP condition received.
received. Data, repeated START, or STOP can be received after this. If NACK is sent, the slave
will wait for a new START condition and address match.
If the slave is not able to send a high level or NACK, the collision flag is set, and it will disable the
data and acknowledge output from the slave logic. The clock hold is released. A START or
repeated START condition will be accepted.
When the STOP condition is received, the slave address/stop flag will be set, indicating that a
STOP condition, and not an address match, occurred.
The slave will know when an address packet with R/W direction bit cleared has been success-
fully received. After acknowledging this, the slave must be ready to receive data. When a data
packet is received, the data interrupt flag is set and the slave must indicate ACK or NACK. After
indicating a NACK, the slave must expect a STOP or repeated START condition.
The slave will know when an address packet with R/W direction bit set has been successfully
received. It can then start sending data by writing to the slave data register. When a data packet
transmission is completed, the data interrupt flag is set. If the master indicates NACK, the slave
must stop transmitting data and expect a STOP or repeated START condition.
An external driver interface can be enabled. When this is done, the internal TWI drivers with
input filtering and slew rate control are bypassed. The normal I/O pin function is used, and the
direction must be configured by the user software. When this mode is enabled, an external TWI
compliant tri-state driver is needed for connecting to a TWI bus.
By default, port pins 0 (Pn0) and 1 (Pn1) are used for SDA and SCL. The external driver inter-
face uses port pins 0 to 3 for the SDA_IN, SCL_IN, SDA_OUT, and SCL_OUT signals.
Atmel AVR XMEGA AU
270
Related parts for ATxmega64A4U
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
U6046BREAR WINDOW HEATING TIMER / LONG-TERM TIMER
Manufacturer:
ATMEL Corporation
Datasheet: