AT32UC3B0256 Atmel Corporation, AT32UC3B0256 Datasheet - Page 375

• Manufacturer Part Number: AT32UC3B0256
• Manufacturer: Atmel Corporation

Specifications of AT32UC3B0256

• Flash (kbytes): 256 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 60 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 44
• Ext Interrupts: 44
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device + OTG
• Spi: 4
• Twi (i2c): 1
• Uart: 3
• Ssc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0-3.6 or (1.65-1.95+3.0-3.6)
• Operating Voltage (vcc): 3.0-3.6 or (1.65-1.95+3.0-3.6)
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 10
• Output Compare Channels: 16
• Input Capture Channels: 6
• Pwm Channels: 13
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Table of contents
32000D–04/2011
1
2
3
4
5
6
Feature Summary...................................................................................... 1
Introduction .............................................................................................. 2
Programming Model ................................................................................ 5
Java Extension Module ......................................................................... 27
Secure state ............................................................................................ 31
Memory Management Unit .................................................................... 35
Memory Protection Unit ........................................................................ 51
1.1
1.2
1.3
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
3.1
4.1
4.2
4.3
5.1
5.2
5.3
6.1
6.2
6.3
The AVR family ..................................................................................................2
Microarchitectures .............................................................................................4
Data Formats .....................................................................................................5
Data Organization ..............................................................................................5
Instruction Organization .....................................................................................6
Processor States ...............................................................................................7
Entry and Exit Mechanism .................................................................................8
Register File ......................................................................................................8
The Stack Pointer ............................................................................................10
The Program Counter ......................................................................................11
The Link Register ............................................................................................11
The Status Register .........................................................................................11
System registers ..............................................................................................14
Recommended Call Convention ......................................................................26
The AVR32 Java Virtual Machine ....................................................................27
Mechanisms implementing the Secure State ..................................................31
Secure state programming model ...................................................................32
Details on Secure State implementation .........................................................33
Memory map in systems with MMU .................................................................35
Understanding the MMU ..................................................................................37
Operation of the MMU and MMU exceptions ..................................................47
Memory map in systems with MPU .................................................................51
Understanding the MPU ..................................................................................51
Example of MPU functionality ..........................................................................55
The AVR32 Microprocessor Architecture .........................................................2
AVR32
i