參數(shù)資料
型號: AT32UC3A3256-ALUT
廠商: Atmel
文件頁數(shù): 86/94頁
文件大小: 0K
描述: IC MCU AVR32 256KB FLASH 144LQFP
產(chǎn)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: 300
系列: AVR®32 UC3 A3
核心處理器: AVR
芯體尺寸: 32-位
速度: 66MHz
連通性: EBI/EMI,I²C,IrDA,MMC,SPI,SSC,UART/USART,USB OTG
外圍設(shè)備: 欠壓檢測/復位,DMA,POR,WDT
輸入/輸出數(shù): 110
程序存儲器容量: 256KB(256K x 8)
程序存儲器類型: 閃存
RAM 容量: 128K x 8
電壓 - 電源 (Vcc/Vdd): 1.65 V ~ 1.95 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 144-LQFP
包裝: 托盤
產(chǎn)品目錄頁面: 615 (CN2011-ZH PDF)
配用: ATSTK600-RC32-ND - STK600 ROUTING CARD AVR
ATEVK1104-ND - KIT DEV/EVAL FOR AVR32 AT32UC3A
ATAVRONEKIT-ND - KIT AVR/AVR32 DEBUGGER/PROGRMMR
ATEVK1100-ND - KIT DEV/EVAL FOR AVR32 AT32UC3A
87
32072SH–AVR32–10/2012
AT32UC3A3
10.3.7
SPI
SPI disable does not work in SLAVE mode
SPI disable does not work in SLAVE mode.
Fix/Workaround
Read the last received data, then perform a software reset by writing a one to the Software
Reset bit in the Control Register (CR.SWRST).
SPI bad serial clock generation on 2nd chip_select when SCBR=1, CPOL=1, and
NCPHA=0
When multiple chip selects (CS) are in use, if one of the baudrates equal 1 while one
(CSRn.SCBR=1) of the others do not equal 1, and CSRn.CPOL=1 and CSRn.NCPHA=0,
then an additional pulse will be generated on SCK.
Fix/Workaround
When multiple CS are in use, if one of the baudrates equals 1, the others must also equal 1
if CSRn.CPOL=1 and CSRn.NCPHA=0.
SPI data transfer hangs with CSR0.CSAAT==1 and MR.MODFDIS==0
When CSR0.CSAAT==1 and mode fault detection is enabled (MR.MODFDIS==0), the SPI
module will not start a data transfer.
Fix/Workaround
Disable mode fault detection by writing a one to MR.MODFDIS.
Disabling SPI has no effect on the SR.TDRE bit
Disabling SPI has no effect on the SR.TDRE bit whereas the write data command is filtered
when SPI is disabled. Writing to TDR when SPI is disabled will not clear SR.TDRE. If SPI is
disabled during a PDCA transfer, the PDCA will continue to write data to TDR until its buffer
is empty, and this data will be lost.
Fix/Workaround
Disable the PDCA, add two NOPs, and disable the SPI. To continue the transfer, enable the
SPI and PDCA.
10.3.8
Power Manager
OSC32
not
functionnal
in
Crystal
Modes
(OSC32CTRL.MODE=1
or
OSC32CTRL.MODE=2)
OSC32 clock output is not active even if the oscillation signal is present on XIN32/XOUT32
pins.
OSC32RDY bit may still set even if the CLK32 is not active.
External clock mode (OSC32CTRL.MODE=0) is not affected.
Fix/Workaround
None.
Clock sources will not be stopped in STATIC sleep mode if the difference between
CPU and PBx division factor is too high
If the division factor between the CPU/HSB and PBx frequencies is more than 4 when going
to a sleep mode where the system RC oscillator is turned off, then high speed clock sources
will not be turned off. This will result in a significantly higher power consumption during the
sleep mode.
Fix/Workaround
Before going to sleep modes where the system RC oscillator is stopped, make sure that the
factor between the CPU/HSB and PBx frequencies is less than or equal to 4.
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