AT32UC3B1256-AUT Atmel, AT32UC3B1256-AUT Datasheet - Page 23

• Manufacturer Part Number: AT32UC3B1256-AUT
• Description: IC MCU AVR32 256KB FLASH 48-TQFP
• Manufacturer: Atmel
• Series: AVR®32 UC3r

Specifications of AT32UC3B1256-AUT

• Core Processor: AVR
• Core Size: 32-Bit
• Speed: 60MHz
• Connectivity: I²C, IrDA, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 28
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-TQFP, 48-VQFP
• Processor Series: AT32UC3x
• Core: AVR32
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: 2-Wire/SPI/USART
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 28
• Number Of Timers: 3
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR32, EWAVR32-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATEXTWIFI, ATEVK1101
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 6-ch x 10-bit
• Controller Family/series: AVR UC3
• No. Of I/o's: 28
• Ram Memory Size: 32KB
• Cpu Speed: 60MHz
• No. Of Timers: 1
• Rohs Compliant: Yes
• For Use With: ATSTK600-TQFP48 - STK600 SOCKET/ADAPTER 48-TQFPATAVRONEKIT - KIT AVR/AVR32 DEBUGGER/PROGRMMR770-1008 - ISP 4PORT ATMEL AVR32 MCU SPIATEVK1101 - KIT DEV/EVAL FOR AVR32 AT32UC3B
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

6.4.3
6.4.3.1
6.4.3.2
32059K–03/2011
Processor States
Debug State
Normal RISC State
Figure 6-5.
The AVR32 processor supports several different execution contexts as shown in
page
Table 6-2.
Mode changes can be made under software control, or can be caused by external interrupts or
exception processing. A mode can be interrupted by a higher priority mode, but never by one
with lower priority. Nested exceptions can be supported with a minimal software overhead.
When running an operating system on the AVR32, user processes will typically execute in the
application mode. The programs executed in this mode are restricted from executing certain
instructions. Furthermore, most system registers together with the upper halfword of the status
register cannot be accessed. Protected memory areas are also not available. All other operating
modes are privileged and are collectively called System Modes. They have full access to all priv-
ileged and unprivileged resources. After a reset, the processor will be in supervisor mode.
The AVR32 can be set in a debug state, which allows implementation of software monitor rou-
tines that can read out and alter system information for use during application development. This
implies that all system and application registers, including the status registers and program
counters, are accessible in debug state. The privileged instructions are also available.
Bit 15
Priority
1
2
3
4
5
6
N/A
N/A
0
-
23.
T
0
0
-
Mode
Non Maskable Interrupt
Exception
Interrupt 3
Interrupt 2
Interrupt 1
Interrupt 0
Supervisor
Application
The Status Register Low Halfword
Overview of Execution Modes, their Priorities and Privilege Levels.
0
-
0
-
0
-
0
-
0
-
0
-
Security
Privileged
Privileged
Privileged
Privileged
Privileged
Privileged
Privileged
Unprivileged
0
-
L
0
Q
0
V
0
Description
Non Maskable high priority interrupt mode
Execute exceptions
General purpose interrupt mode
General purpose interrupt mode
General purpose interrupt mode
General purpose interrupt mode
Runs supervisor calls
Normal program execution mode
N
0
Z
0
Bit 0
C
0
Bit name
Initial value
Carry
Zero
Sign
Overflow
Saturation
Lock
Reserved
Scratch
Reserved
AT32UC3B
Table 6-2 on
23