參數資料
型號: AT32UC3A1128-AUT
廠商: Atmel
文件頁數: 73/97頁
文件大?。?/td> 0K
描述: IC MCU AVR32 128KB FLASH 100TQFP
產品培訓模塊: AVR UC3 Audio Application
MCU Product Line Introduction
AVR EVK1105 Digital Audio Gateway Kit
AVR® UC3 Introduction
標準包裝: 450
系列: AVR®32 UC3 A1
核心處理器: AVR
芯體尺寸: 32-位
速度: 66MHz
連通性: 以太網,I²C,SPI,SSC,UART/USART,USB OTG
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數: 69
程序存儲器容量: 128KB(128K x 8)
程序存儲器類型: 閃存
RAM 容量: 32K x 8
電壓 - 電源 (Vcc/Vdd): 1.65 V ~ 1.95 V
數據轉換器: A/D 8x10b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 100-TQFP
包裝: 托盤
配用: ATSTK600-RC28-ND - STK600 ROUTING CARD AVR
ATAVRONEKIT-ND - KIT AVR/AVR32 DEBUGGER/PROGRMMR
ATSTK600-TQFP100-ND - STK600 SOCKET/ADAPTER 100-TQFP
ATEVK1100-ND - KIT DEV/EVAL FOR AVR32 AT32UC3A
75
AT32UC3A
None.
15.2.9
USART
1.
ISO7816 info register US_NER cannot be read
The NER register always returns zero.
Fix/Workaround
None
15.2.10
Processor and Architecture
1.
LDM instruction with PC in the register list and without ++ increments Rp
For LDM with PC in the register list: the instruction behaves as if the ++ field is always set, ie
the pointer is always updated. This happens even if the ++ field is cleared. Specifically, the
increment of the pointer is done in parallel with the testing of R12.
Fix/Workaround
None.
2.
RETE instruction does not clear SREG[L] from interrupts.
The RETE instruction clears SREG[L] as expected from exceptions.
Fix/Workaround
When using the STCOND instruction, clear SREG[L] in the stacked value of SR before
returning from interrupts with RETE.
3.
Exceptions when system stack is protected by MPU
RETS behaves incorrectly when MPU is enabled and MPU is configured so that
system stack is not readable in unprivileged mode.
Fix/Woraround
Workaround 1: Make system stack readable in unprivileged mode,
or
Workaround 2: Return from supervisor mode using rete instead of rets. This
requires :
1. Changing the mode bits from 001b to 110b before issuing the instruction.
Updating the mode bits to the desired value must be done using a single mtsr
instruction so it is done atomically. Even if this step is described in general
as not safe in the UC technical reference guide, it is safe in this very
specific case.
2. Execute the RETE instruction.
32058KS–AVR32–01/12
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