AT32UC3B1128 Atmel Corporation, AT32UC3B1128 Datasheet - Page 93

• Manufacturer Part Number: AT32UC3B1128
• Manufacturer: Atmel Corporation

Specifications of AT32UC3B1128

• Flash (kbytes): 128 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 60 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 28
• Ext Interrupts: 28
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 6
• 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

9.2.4
32002F–03/2010
Entry into Debug Mode
Any instruction valid in Monitor Mode is also valid in OCD Mode. Memory operations can be con-
ducted without any special synchronization with external hardware.
All OCD units can be configured while the CPU executes in OCD Mode, but the following debug
features are disabled:
OCD Mode is exited by writing the retd instruction to DINST.
Figure 9-3.
Debug Mode can only be entered when the OCD is enabled, and Debug Mode is not masked.
The following ways of entry are then possible:
The debugger can identify the condition which caused entry into Debug Mode by examining the
status bits in the Development Status register (DS). Each cause of entry has a particular bit
associated with it. Several exceptions can trigger simultaneously, causing more than one bit to
be set.
Note that any privileged CPU mode may write the SR:D bit to one directly, but this will not cause
entry to Debug Mode.
• PC breakpoints
• Data breakpoints
• Watchpoints
• Program Trace
• Data Trace
• Debug request from the debugger
• Program counter breakpoint
• Data address or value breakpoint
• breakpoint instruction
• Trapping opcode 0x0000
• Single step
• Event on EVTI pin
• Abort command from the debugger
OCD
Instructions
mov r12,r7
sub r12,0x01
mov r6,r12
adc r6,r12,r7
retd
Executing instructions on the CPU in OCD Mode.
Opcode
0x0E9C
0x201C
0x1896
0xF807 0046
0xD623
Written by
tool to DINST
0x0E9C201C
0x0046D623
0x1896F807
Changes in DS
INC→0→1
INC→0→1
INC→0→1
DBS→0
AVR32
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