AT32UC3A4256S Atmel Corporation, AT32UC3A4256S Datasheet - Page 125
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AT32UC3A4256S
Manufacturer Part Number
AT32UC3A4256S
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(377 pages)
2.AT32UC3A0128.pdf
(33 pages)
3.AT32UC3A0128.pdf
(159 pages)
4.AT32UC3A3128.pdf
(91 pages)
5.AT32UC3A3128.pdf
(1012 pages)
Specifications of AT32UC3A4256S
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
AES
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT32UC3A4256S-C1UR
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT32UC3A4256S-U
Manufacturer:
ST
Quantity:
79
Part Number:
AT32UC3A4256S-U
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
9.4.6.6
9.5
9.5.1
9.5.1.1
32002F–03/2010
Program trace
Program trace overview
Watchpoint Trigger
Branch message summary
Table 9-30.
The AVR32 OCD system provides program trace support via the debug port. The program trace
feature implements a Program Flow Change Model in which the program trace is synchronized
at each program flow discontinuity. This occurs at taken indirect branches and exceptions. A
record of taken / not taken direct branches is included so that the complete program flow can be
decoded.
The development tool can then interpolate what transpires between each program trace mes-
sage by correlating information from branch target messaging and static source or object code
files. Self-modifying code cannot be traced with the Program Flow Change Model because the
source code is not static.
The TM[2] bit in the Development Control register must be set to enable program trace.
Five types of branch messages can be generated:
R/W
R/W
R/W
R/W
R/W
R
1. Program Trace, Indirect Branch is transmitted on most subroutine calls, returns, inter-
2. Program Trace Synchronization is transmitted to indicate the current PC after starting
rupts, exceptions, and any situation where the target address of a branch cannot be
determined from the source code. This message contains the instruction count to iden-
tify the branch and the target PC to identify the branch target.
trace or after trace synchronization is lost.
Bit Number
31:29
28:26
25:23
22:20
19:0
WT, Watchpoint Trigger Register
Field Name
PTS
PTE
DTS
DTE
Reserved
Init. Val.
000
000
000
000
-
Description
PTS - Program Trace Start
000 = Trigger disabled
001 = Program watchpoint 0b
010 = Program watchpoint 1a
011 = Program watchpoint 1b
100 = Program watchpoint 2a
101 = Program watchpoint 2b
110 = Data watchpoint 3a
111 = Data watchpoint 3b
PTE - Program Trace End
000 = Trigger disabled
001 <-> 111 Watchpoint selected as for PTS
DTS - Data Trace Start
000 = Trigger disabled
001 <-> 111 Watchpoint selected as for PTS
DTE - Data Trace End
000 = Trigger disabled
001 <-> 111 Watchpoint selected as for PTS
Reserved
AVR32
125