AT32UC3A4128S Atmel Corporation, AT32UC3A4128S Datasheet - Page 875

• Manufacturer Part Number: AT32UC3A4128S
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A4128S

• Flash (kbytes): 128 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
• 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

31.7.4
Name :
Access Type :
Offset :
Reset Value :
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32072G–11/2011
CLKDIV : Clock Division.
RST : Reset. When RST is written, internal synchronous reset is performed.
SRAC : Serial Access Mode. The SRAC cannot be changed during protocol execution.
NOCRC : No CRC computation.
FCLR : FIFO clear.
FDIR : FIFO direction.
REI : Rising Edge Input. When setting parallel mode, set REI=0. This setting cannot be changed during protocol execution.
RST
Write this field to change SCLK frequency = CLK_MSI / (2*(CLKDIV+1)).
0 : This bit is cleared to 0 after the internal reset is completed.
1 : Writing a 1 starts reset operation.
0 : Write this bit to 0 to set parallel mode.
1 : Write this bit to 1 to set serial mode.
0 : Write 0 to enable CRC output. During read protocol, the CRC check is performed as usual regardless of NOCRC.
1 : Write 1 to disable CRC output. When NOCRC=1, the write protocol is executed without adding the CRC data.
Write 1 to initialize FIFO data. This bit is cleared after the FIFO is initialized.
0 : Write 0 to set the FIFO direction to transmit.
1 : Write 1 to set the FIFO direction to receive.
0 : Write 0 to sample data at the falling edge of SCLK.
31
23
15
7
-
-
System register
SRAC
30
22
14
SYS
Read/Write
0x0C
0x00004015
6
-
-
29
21
13
5
-
-
-
NOCRC
REI
28
20
12
4
-
CLKDIV
REO
27
19
11
3
-
-
26
18
10
2
-
-
FCLR
BSY
25
17
9
1
-
FDIR
24
16
8
0
-
875