AT32UC3A464 Atmel Corporation, AT32UC3A464 Datasheet - Page 822

• Manufacturer Part Number: AT32UC3A464
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A464

• Flash (kbytes): 64 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 66 MHz
• Cpu: 32-bit AVR
• Hardware Qtouch Acquisition: No
• Usb Transceiver: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 2
• Uart: 4
• Ssc: 1
• Sd / Emmc: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 128
• Self Program Memory: YES
• Dram Memory: No
• 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
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

30.6.3
32072G–11/2011
Data Transfer Operation
Figure 30-9. Command/Response Functional Flow Diagram
Note:
The MultiMedia Card allows several read/write operations (single block, multiple blocks, stream,
etc.). These kind of transfers can be selected setting the Transfer Type field in the CMDR regis-
ter (CMDR.TRTYP).
These operations can be done using the features of the DMA Controller.
In all cases, the Data Block Length must be defined either in the Data Block Length field in the
MR register (MR.BLKLEN)), or in the Block Register (BLKR). This field determines the size of
the data block.
1. If the command is SEND_OP_COND, the CRC error bit is always present (refer to R3
Wait for SR.CMDRY bit set
response in the MultiMedia Card specification).
Check error bits in the
SR register
to one
(1)
Set the command argument
Read response if required
Read the SR register
ARGR = Argument
CMD = Command
Set the command
Status error bits?
SR.CMDRDY
RETURN OK
1
(1)
RETURN ERROR
Yes
0
(1)
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