AT32UC3A4256 Atmel Corporation, AT32UC3A4256 Datasheet - Page 892

• Manufacturer Part Number: AT32UC3A4256
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A4256

• Flash (kbytes): 256 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
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

32.5.2
Name:
Access Type:
Offset:
Reset Value:
• CTYPE: Countermeasure Type
32072G–11/2011
X
X
X
X
X
X
X
X
0
1
LOD
31
23
15
7
-
All the countermeasures are enabled by default.
CTYPE field is write-only and can only be modified if CKEY is correctly set.
Mode Register
X
X
X
X
X
X
X
X
0
1
30
22
14
6
-
MR
Read/Write
0x04
0x00000000
CTYPE
PROCDLY
CKEY
X
X
X
X
X
X
X
X
0
1
OPMOD
29
21
13
5
-
X
X
X
X
X
X
X
X
0
1
X
X
X
X
X
X
X
X
0
1
28
20
12
4
Description
Countermeasure type 1 is disabled
Add random spurious power consumption during some configuration
settings
Countermeasure type 2 is disabled
Add randomly 1 cycle to processing.
Countermeasure type 3 is disabled
Add randomly 1 cycle to processing (other version)
Countermeasure type 4 is disabled
Add randomly up to /13/15 cycles (for /192/256-bit key) to processing
Countermeasure type 5 is disabled
Add random spurious power consumption during processing
(recommended with DMA access)
27
19
11
3
-
-
KEYSIZE
CTYPE
26
18
10
2
-
CFBS
25
17
9
1
-
SMOD
CIPHER
24
16
8
0
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