參數(shù)資料
型號： AT32UC3L064-D3UR
廠商： Atmel
文件頁數(shù)： 94/174頁
文件大?。?/td> 0K
描述： MCU AVR32 64KB FLASH 48TLLGA
標(biāo)準包裝： 8,000
系列： AVR®32 UC3 L
核心處理器： AVR
芯體尺寸： 32-位
速度： 50MHz
連通性： I²C，SPI，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，DMA，POR，PWM，WDT
輸入/輸出數(shù)： 36
程序存儲器容量： 64KB（64K x 8）
程序存儲器類型： 閃存
RAM 容量： 16K x 8
電壓 - 電源 (Vcc/Vdd)： 1.62 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 9x12b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 48-UFLGA
包裝： 帶卷 (TR)
其它名稱： 32UC3L064-D3UR
32UC3L064-D3UR-ND
45
32099I–01/2012
AT32UC3L016/32/64
7.5.10
Priority
If more than one PDCA channel is requesting transfer at a given time, the PDCA channels are
prioritized by their channel number. Channels with lower numbers have priority over channels
with higher numbers, giving channel zero the highest priority.
7.5.11
Error Handling
If the Memory Address Register (MAR) is set to point to an invalid location in memory, an error
will occur when the PDCA tries to perform a transfer. When an error occurs, the Transfer Error
bit in the Interrupt Status Register (ISR.TERR) will be set and the DMA channel that caused the
error will be stopped. In order to restart the channel, the user must program the Memory
Address Register to a valid address and then write a one to the Error Clear bit in the Control
Register (CR.ECLR). If the Transfer Error interrupt is enabled, an interrupt request will be gener-
ated when a transfer error occurs.
7.5.12
Peripheral Event Trigger
Peripheral events can be used to trigger PDCA channel transfers. Peripheral Event synchroniza-
tions are enabled by writing a one to the Event Trigger bit in the Mode Register (MR.ETRIG).
When set, all DMA requests will be blocked until a peripheral event is received. For each periph-
eral event received, only one data item is transferred. If no DMA requests are pending when a
peripheral event is received, the PDCA will start a transfer as soon as a peripheral event is
detected. If multiple events are received while the PDCA channel is busy transferring data, an
overflow condition will be signaled in the Peripheral Event System. Refer to the Peripheral Event
System chapter for more information.
7.6
Performance Monitors
Up to two performance monitors allow the user to measure the activity and stall cycles for PDCA
transfers. To monitor a PDCA channel, the corresponding channel number must be written to
one of the MON0/1CH fields in the Performance Control Register (PCONTROL) and a one must
be written to the corresponding CH0/1EN bit in the same register.
Due to performance monitor hardware resource sharing, the two monitor channels should NOT
be programmed to monitor the same PDCA channel. This may result in UNDEFINED perfor-
mance monitor behavior.
7.6.1
Measuring mechanisms
Three different parameters can be measured by each channel:
The number of data transfer cycles since last channel reset, both for read and write
The number of stall cycles since last channel reset, both for read and write
The maximum latency since last channel reset, both for read and write
These measurements can be extracted by software and used to generate indicators for bus
latency, bus load, and maximum bus latency.
Each of the counters has a fixed width, and may therefore overflow. When an overflow is
encountered in either the Performance Channel Data Read/Write Cycle registers (PRDATA0/1
and PWDATA0/1) or the Performance Channel Read/Write Stall Cycles registers (PRSTALL0/1
and PWSTALL0/1) of a channel, all registers in the channel are reset. This behavior is altered if
the Channel Overflow Freeze bit is one in the Performance Control register (PCON-
TROL.CH0/1OVF). If this bit is one, the channel registers are frozen when either DATA or
STALL reaches its maximum value. This simplifies one-shot readout of the counter values.
相關(guān)PDF資料
PDF描述
516-020-000-102 CONN PLUG 20POS RACK & PANEL
AT32UC3L032-D3UR MCU AVR32 32KB FLASH 48TLLGA
516-090-000-302 CONN RACK & PANEL PLUG 90POS
516-038-000-111 CONN PLUG 38POS RACK & PANEL
516-090-000-101 CONN PLUG 90POS RACK & PANEL
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AT32UC3L064-ZAUES 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:32-bit AVR?Microcontroller
AT32UC3L064-ZAUR 功能描述:32位微控制器 - MCU UC3L-64KB Flash 85C RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT
AT32UC3L064-ZAUT 功能描述:32位微控制器 - MCU UC3L-64KB Flash RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT
AT32UC3L0-XPLD 功能描述:開發(fā)板和工具包 - AVR UC3 L0 Xplained Eval Kit RoHS:否 制造商:Arduino 產(chǎn)品:Evaluation Boards 工具用于評估:ATMega32U4 核心:AVR 接口類型:I2C, UART, USB 工作電源電壓:6 V to 20 V
AT32UC3L-EK 功能描述:開發(fā)板和工具包 - AVR AVR32 Eval Kit for AT32UC3L Series RoHS:否 制造商:Arduino 產(chǎn)品:Evaluation Boards 工具用于評估:ATMega32U4 核心:AVR 接口類型:I2C, UART, USB 工作電源電壓:6 V to 20 V
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