為了充分利用ARM內(nèi)核強(qiáng)大的處理功能，應(yīng)當(dāng)使用快速的程序和數(shù)據(jù)存儲(chǔ)器。但是，靜態(tài)RAM足夠快，完全可以支持一個(gè)周期內(nèi)最高速度的讀寫訪問(wèn)，因此，F(xiàn)lash存儲(chǔ)器的速度顯著降低。
標(biāo)簽： PHILIPS Flash ARM 微控制器
上傳時(shí)間： 2013-11-06
上傳用戶：獨(dú)孤求源
The LPC2292/2294 microcontrollers are based on a 16/32-bit ARM7TDMI-S CPU with real-time emulation and embedded trace support, together with 256 kB of embedded high-speed flash memory. A 128-bit wide memory interface and a unique accelerator architecture enable 32-bit code execution at the maximum clock rate. For critical code size applications, the alternative 16-bit Thumb mode reduces code by more than 30 pct with minimal performance penalty. With their 144-pin package, low power consumption, various 32-bit timers, 8-channel 10-bit ADC, 2/4 (LPC2294) advanced CAN channels, PWM channels and up to nine external interrupt pins these microcontrollers are particularly suitable for automotive and industrial control applications as well as medical systems and fault-tolerant maintenance buses. The number of available fast GPIOs ranges from 76 (with external memory) through 112 (single-chip). With a wide range of additional serial communications interfaces, they are also suited for communication gateways and protocol converters as well as many other general-purpose applications. Remark: Throughout the data sheet, the term LPC2292/2294 will apply to devices with and without the /00 or /01 suffix. The suffixes /00 and /01 will be used to differentiate from other devices only when necessary.
標(biāo)簽： lpc datasheet 2292 2294
上傳時(shí)間： 2014-12-30
上傳用戶：aysyzxzm
The LPC1850/30/20/10 are ARM Cortex-M3 based microcontrollers for embeddedapplications. The ARM Cortex-M3 is a next generation core that offers systemenhancements such as low power consumption, enhanced debug features, and a highlevel of support block integration.The LPC1850/30/20/10 operate at CPU frequencies of up to 150 MHz. The ARMCortex-M3 CPU incorporates a 3-stage pipeline and uses a Harvard architecture withseparate local instruction and data buses as well as a third bus for peripherals. The ARMCortex-M3 CPU also includes an internal prefetch unit that supports speculativebranching.The LPC1850/30/20/10 include up to 200 kB of on-chip SRAM data memory, a quad SPIFlash Interface (SPIFI), a State Configuration Timer (SCT) subsystem, two High-speedUSB controllers, Ethernet, LCD, an external memory controller, and multiple digital andanalog peripherals.
標(biāo)簽： Cortex-M 1850 LPC 內(nèi)核微控制器
上傳時(shí)間： 2014-12-31
上傳用戶：zhuoying119
NAND FLASH 讀寫控制以及ECC的VHDL源程序
上傳時(shí)間： 2013-10-13
上傳用戶：003030
Adobe Flash Player Plugin_11.2\游戲、農(nóng)場(chǎng)、視頻
標(biāo)簽： Player Plugin Adobe Flash
上傳時(shí)間： 2014-01-17
上傳用戶：會(huì)稽劍客
Adobe Flash Player Plugin_11.2\游戲、農(nóng)場(chǎng)、視頻
標(biāo)簽： Player Plugin Adobe Flash
上傳時(shí)間： 2013-11-05
上傳用戶：199311
This application note describes how to retrieve user-defined data from Xilinx configurationPROMs (XC18V00 and Platform Flash devices) after the same PROM has configured theFPGA. The method to add user-defined data to the configuration PROM file is also discussed.The reference design described in this application note can be used in any of the followingXilinx FPGA architectures: Spartan™-II, Spartan-IIE, Spartan-3, Virtex™, Virtex-E, Virtex-II,and Virtex-II Pro.
上傳時(shí)間： 2013-10-09
上傳用戶：guojin_0704
一些應(yīng)用利用 Xilinx FPGA 在每次啟動(dòng)時(shí)可改變配置的能力，根據(jù)所需來(lái)改變 FPGA 的功能。Xilinx Platform Flash XCFxxP PROM 的設(shè)計(jì)修訂 (Design Revisioning) 功能，允許用戶在單個(gè)PROM 中將多種配置存儲(chǔ)為不同的修訂版本，從而簡(jiǎn)化了 FPGA 配置更改。在 FPGA 內(nèi)部加入少量的邏輯，用戶就能在 PROM 中存儲(chǔ)的多達(dá)四個(gè)不同的修訂版本之間進(jìn)行動(dòng)態(tài)切換。多重啟動(dòng)或從多個(gè)設(shè)計(jì)修訂進(jìn)行動(dòng)態(tài)重新配置的能力，與 Spartan™-3E FPGA 和第三方并行 flashPROM 一起使用時(shí)所提供的 MultiBoot 選項(xiàng)相似。本應(yīng)用指南將進(jìn)一步說(shuō)明 Platform Flash PROM 如何提供附加選項(xiàng)來(lái)增強(qiáng)配置失敗時(shí)的安全性，以及如何減少引腳數(shù)量和板面積。此外，Platform Flash PROM 還為用戶提供其他優(yōu)勢(shì)：iMPACT 編程支持、單一供應(yīng)商解決方案、低成本板設(shè)計(jì)和更快速的配置加載。本應(yīng)用指南還詳細(xì)地介紹了一個(gè)包含 VHDL 源代碼的參考設(shè)計(jì)。
標(biāo)簽： Platform Flash XAPP PROM
上傳時(shí)間： 2013-10-10
上傳用戶：wangcehnglin
本應(yīng)用指南講述一種實(shí)用的 MicroBlaze™ 系統(tǒng)，用于在非易失性 Platform Flash PROM 中存儲(chǔ)軟件代碼、用戶數(shù)據(jù)和配置數(shù)據(jù)，以簡(jiǎn)化系統(tǒng)設(shè)計(jì)和降低成本。另外，本應(yīng)用指南還介紹一種可移植的硬件設(shè)計(jì)、一個(gè)軟件設(shè)計(jì)以及在實(shí)現(xiàn)流程中使用的其他腳本實(shí)用工具。 簡(jiǎn)介許多 FPGA 設(shè)計(jì)都集成了使用 MicroBlaze 和 PowerPC™ 處理器的軟件嵌入式系統(tǒng)，這些設(shè)計(jì)同時(shí)使用外部易失性存儲(chǔ)器來(lái)執(zhí)行軟件代碼。使用易失性存儲(chǔ)器的系統(tǒng)還必須包含一個(gè)非易失性器件，用來(lái)在斷電期間存儲(chǔ)軟件代碼。大多數(shù) FPGA 系統(tǒng)都在電路板上使用 Platform FlashPROM (在本文中稱作 PROM)，用于在上電時(shí)加載 FPGA 配置數(shù)據(jù)。另外，許多應(yīng)用還可能使用其他非易失性器件(如 SPI Flash、Parallel Flash 或 PIC)來(lái)保存 MAC 地址等少量用戶數(shù)據(jù)，因此導(dǎo)致系統(tǒng)電路板上存在大量非易失性器件。
標(biāo)簽： MicroBlaze Platform Flash XAPP
上傳時(shí)間： 2013-10-15
上傳用戶：rocwangdp
三菱PLC的學(xué)習(xí)FLASH
上傳時(shí)間： 2013-12-29
上傳用戶：leyesome
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