AT32UC3A4128 Atmel Corporation, AT32UC3A4128 Datasheet - Page 920

• Manufacturer Part Number: AT32UC3A4128
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A4128

• 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: 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

34.2.2.1
32072G–11/2011
Security measure and control location
A security measure is a mechanism to either block or allow SAB access to a certain address or
address range. A security measure is enabled or disabled by one or several control signals. This
is called the control location for the security measure.
These security measures can be used to prevent an end user from reading out the code pro-
grammed in the flash, for instance.
Table 34-2.
Below follows a more in depth description of what locations are accessible when the security
measures are active.
Table 34-3.
Table 34-4.
Security measure
Other accesses
Other accesses
OCD DCEMU,
OCD DCEMU,
OCD DCCPU,
OCD DCCPU,
FLASH pages
programming
FLASHC PB
BOOTPROT
OCD DCSR
OCD DCSR
Security bit
User code
User page
User page
interface
outside
Name
Name
SAB Security measures.
Security bit SAB restrictions
User code programming SAB restrictions
Control Location
FLASHC UPROT
FLASHC security
BOOTPROT size
+ security bit set
0x580000000 +
Address start
Address start
0x5FFFE0000
0x100000110
0x580800000
0x100000110
0x580800000
bit set
-
-
Description
Programming and debugging not possible, very restricted
access.
Restricts all access except parts of the flash and the flash
controller for programming user code. Debugging is not
possible unless an OS running from the secure part of the
flash supports it.
0x580000000 + Flash size
0x5FFFE0400
Address end
0x100000118
0x581000000
Address end
0x100000118
0x581000000
-
-
Access
Read/Write
Read
Blocked
Access
Read/Write
Read
Read/Write
Read/Write
Blocked
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