參數(shù)資料
型號: ATSAM3U1EA-CU
廠商: Atmel
文件頁數(shù): 21/60頁
文件大?。?/td> 0K
描述: IC MCU 32BIT 64KB FLASH 144LFBGA
產(chǎn)品培訓(xùn)模塊: MCU Product Line Introduction
Cortex®-M3 Introduction and Specific SAM3U Implementation
SAM3U Cortex-M3 Based MCU Introduction
Touch Solutions on the Atmel ARM? Cortex?-M3 Based Flash Microcontrollers
標(biāo)準(zhǔn)包裝: 184
系列: SAM3U
核心處理器: ARM? Cortex?-M3
芯體尺寸: 32-位
速度: 96MHz
連通性: EBI/EMI,I²C,MMC,SPI,SSC,UART/USART,USB
外圍設(shè)備: 欠壓檢測/復(fù)位,DMA,I²S,POR,PWM,WDT
輸入/輸出數(shù): 96
程序存儲器容量: 64KB(64K x 8)
程序存儲器類型: 閃存
RAM 容量: 20K x 8
電壓 - 電源 (Vcc/Vdd): 1.62 V ~ 1.95 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b,8x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 144-LFBGA
包裝: 托盤
配用: ATSAM3U-EK-ND - KIT EVAL FOR AT91SAM3U CORTEX
28
6430FS–ATARM–10-Feb-12
SAM3U Series
7.6
DMA Controller
Acting as one Matrix Master
Embeds 4 channels:
– 3 channels with 8 bytes/FIFO for Channel Buffering
– 1 channel with 32 bytes/FIFO for Channel Buffering
Linked List support with Status Write Back operation at End of Transfer
Word, HalfWord, Byte transfer support.
Handles high speed transfer of SPI, SSC and HSMCI (peripheral to memory, memory to
peripheral)
Memory to memory transfer
Can be triggered by PWM and T/C which enables to generate waveforms though the
External Bus Interface
The DMA controller can handle the transfer between peripherals and memory and so receives
the triggers from the peripherals listed below. The hardware interface numbers are also given in
7.7
Peripheral DMA Controller
Handles data transfer between peripherals and memories
Nineteen channels
Two for each USART
Two for the UART
Two for each Two Wire Interface
One for the PWM
One for each Analog-to-digital Converter
Low bus arbitration overhead
– One Master Clock cycle needed for a transfer from memory to peripheral
– Two Master Clock cycles needed for a transfer from peripheral to memory
Next Pointer management for reducing interrupt latency requirement
Table 7-4.
DMA Controller
Instance name
Channel T/R
DMA Channel HW interface
Number
HSMCI
Transmit/Receive
0
SPI
Transmit
1
SPI
Receive
2
SSC
Transmit
3
SSC
Receive
4
PWM Event Line 0
Trigger
5
PWM Event Line 1
Trigger
6
TIO Output of TImer
Counter Channel 0
Trigger
7
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