AT32UC3A464S Atmel Corporation, AT32UC3A464S Datasheet - Page 837

• Manufacturer Part Number: AT32UC3A464S
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A464S

• 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: AES
• 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
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

30.7.2
Name:
Access Type:
Offset:
Reset Value:
• BLKLEN[15:0]: Data Block Length
• PADV: Padding Value
• FBYTE: Force Byte Transfer
• WRPROOF Write Proof Enable
• RDPROOF Read Proof Enable
32072G–11/2011
31
23
15
7
-
This field determines the size of the data block.
This field is also accessible in the BLKR register.
If FBYTE bit is zero, the BLKEN[1:0] field must be written to 0b00
0: 0x00 value is used when padding data in write transfer.
1: 0xFF value is used when padding data in write transfer.
PADV is used only in manual transfer.
Enabling Force Byte Transfer allows byte transfers, so that transfer of blocks with a size different from modulo 4 can be
supported.
Warning: BLKLEN value depends on FBYTE.
Writing a one to this bit will enable the Force Byte Transfer.
Writing a zero to this bit will disable the Force Byte Transfer.
Enabling Write Proof allows to stop the MCI Clock (CLK) during write access if the internal FIFO is full. This will guarantee data
integrity, not bandwidth.
Writing a one to this bit will enable the Write Proof mode.
Writing a zero to this bit will disable the Write Proof mode.
Enabling Read Proof allows to stop the MCI Clock (CLK) during read access if the internal FIFO is full. This will guarantee data
integrity, not bandwidth.
Writing a one to this bit will enable the Read Proof mode.
Writing a zero to this bit will disable the Read Proof mode.
Mode Register
PADV
30
22
14
6
MR
Read-write
0x004
0x00000000
Notes:
FBYTE
1. In SDIO Byte mode, BLKLEN field is not used.
2. BLKLEN should be written to one before sending the data transfer command. Otherwise,
29
21
13
5
Overrun may occur even if RDPROOF bit is one.
WRPROOF
28
20
12
4
BLKLEN[15:8]
BLKLEN[7:0]
CLKDIV
RDPROOF
27
19
11
3
26
18
10
2
PWSDIV
25
17
9
1
24
16
8
0
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