AT32UC3A3256AU Atmel Corporation, AT32UC3A3256AU Datasheet - Page 547

• Manufacturer Part Number: AT32UC3A3256AU
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A3256AU

• Flash (kbytes): 256 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 66 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 110
• Ext Interrupts: 110
• Usb Transceiver: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• Ssc: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 16
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 128
• Self Program Memory: YES
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0 to 3.6
• Operating Voltage (vcc): 3.0 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 18
• Input Capture Channels: 12
• Pwm Channels: 12
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

25.4
Table 25-2.
25.5
25.5.1
32072G–11/2011
Name
CLK
TXD
RXD
RI
DSR
DCD
DTR
CTS
RTS
I/O Lines Description
Product Dependencies
I/O Lines
I/O Lines Description
Description
Transmit Serial Data
or Master Out Slave In (MOSI) in SPI master mode
or Master In Slave Out (MISO) in SPI slave mode
Receive Serial Data
or Master In Slave Out (MISO) in SPI master mode
or Master Out Slave In (MOSI) in SPI slave mode
Ring Indicator
Data Set Ready
Data Carrier Detect
Data Terminal Ready
Clear to Send
or Slave Select (NSS) in SPI slave mode
Request to Send
or Slave Select (NSS) in SPI master mode
Serial Clock
Table 25-1.
The USART pins may be multiplexed with the I/O Controller lines. The user must first configure
the I/O Controller to assign these pins to their peripheral functions. Unused I/O lines may be
used for other purposes.
To prevent the TXD line from falling when the USART is disabled, the use of an internal pull up
is required. If the hardware handshaking feature or modem mode is used, the internal pull up on
TXD must also be enabled.
All the pins of the modems may or may not be implemented on the USART. On USARTs not
equipped with the corresponding pins, the associated control bits and statuses have no effect on
the behavior of the USART.
PIN
RXD
TXD
RTS
CTS
SPI Operating Mode
USART
RXD
TXD
RTS
CTS
SPI Slave
MOSI
MISO
–
CS
Output
Output
Output
Type
Input
Input
Input
Input
Input
I/O
SPI Master
MISO
MOSI
CS
–
Active Level
Low
Low
Low
Low
Low
Low
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