恩智浦半導(dǎo)體（NXP Semiconductors，由飛利浦成立的獨(dú)立半導(dǎo)體公司）今日宣布其將支持Adobe®針對數(shù)字家庭所推出的 Flash®平臺(tái)。這項(xiàng)專門針對連接了互聯(lián)網(wǎng)的電視機(jī)...

　　由于城市網(wǎng)絡(luò)視頻監(jiān)控系統(tǒng)投資巨大、技術(shù)繁雜，因此在建設(shè)前對系統(tǒng)進(jìn)行客觀的總體評價(jià)非常重要。城市視頻監(jiān)控報(bào)警聯(lián)網(wǎng)系統(tǒng)的基本特點(diǎn)是總體投資大、技術(shù)要求高、涉...

　　為了改變目前煤礦安全管理工作的落后狀況，保障職工生命安全和身體健康，有必要運(yùn)用安全管理系統(tǒng)分析的方法。因此，傳統(tǒng)煤礦井下管理須和現(xiàn)代技術(shù)相結(jié)合。 　...

摘要：本應(yīng)用筆記闡述了在DS5250安全微控制器上輕松實(shí)現(xiàn)磁卡讀卡和解碼操作的設(shè)計(jì)。文章還演示了開發(fā)同時(shí)具有磁卡讀卡功能和安全微控制器高級加密功能的實(shí)際應(yīng)用。這一實(shí)例...

摘要：為了理解Maxim的單芯片模塊設(shè)計(jì)原則，首先需要知道電池備份存儲(chǔ)器的開發(fā)歷史。 開發(fā)NV SRAM的目的是生產(chǎn)一種類似于IC的混合存儲(chǔ)器產(chǎn)品，利用低功耗SRAM配合鋰...

Abstract: Portable systems often require operation from batteries or from a wall adapter. The MAX8865 low-dropout (LDO) linear regulator is used to provide the switchover function while supplying a regulator 2.84V that can deliver 100mA. ...

Abstract: Use a supercap to reduce cost of simple battery backup circuits. In low-power systems that require a battery backup switchover circuit during brownout conditions, a supercap may provide adequate power to maintain memory operation...

Abstract: The following application note discusses the advantages of using the DS1632 PC Power Fail and Reset Controller to consolidate various power management functions into one device vs. using discreet components. The DS1632 performs c...

Abstract: The following application note discusses how the DS1233 can be used to save data during a power failure without corrupting the NV SRAM. For many memory systems requiring nonvolatile memory, Dallas Semiconductor ...

Abstract: The following application note provides a circuit that automatically performs shutdown, power-up, and low-battery lockout functions without the need for software control. This micropower circuit provides shutdow...

Abstract: The following application note discusses a circuit that switches power sources efficiently without switching noise using the MAX6326. It discusses the advantages of using this technique over a simple diode-ord method. ...

Abstract: The MAX6326 microprocessor supervisor is used in an application to provide a battery switchover circuit when the wall adapter is disconnected. The reset output drives an external MOSFET that is used as a switch. This switchover c...

Abstract: The following application note discusses a low-cost solution to implement a 3V, 3.3V or 5V logic supply from AC power. It uses the MAX6330 shunt regulator which can supply up to 50mA as well as offering a reset output (power-on r...

Abstract: As a prerequisite to this article, it is recommended that Application Note 505 be reviewed to gain a better understanding of the general behavior of lithium coin-cell batteries.Dallas Semiconductor offers a variety of pro...

摘要：本文討論用于單電源或雙電源處理器的上電復(fù)位功能和門限電壓的選擇策略，另外，還探討了手動(dòng)復(fù)位、電源失效和低電壓檢測等功能。文中闡述了避免使用分立POR和處理器...

摘要：該應(yīng)用筆記說明高可靠系統(tǒng)中合理監(jiān)控電源電壓和電源排序的必要性，給出了監(jiān)控器的選擇標(biāo)準(zhǔn)，并說明上電復(fù)位(POR)電路、多電壓監(jiān)控和余量功能的必要性。另外，還討論了...

摘要：過壓保護(hù)(OVP)器件用于保護(hù)后續(xù)電路免受甩負(fù)載或瞬間高壓的破壞，在某些特定的應(yīng)用中，基本的過壓保護(hù)電路不足以勝任器件保護(hù)的要求，通常有以下兩種需求。第一，電路...

Some microprocessor (µP) systems require more time for shutdown than is provided by conventional circuits for power-fail detection. Between first warning and the actual loss of power, such systems have extensive "housekeeping" tasks ...

Abstract: To ensure correct operation, most microprocessor-based systems require supervision during power-up and power-down, and when entering or exiting shutdown or sleep mode. The supervisor may only provide a power-on reset, or it may o...

Abstract: This article focuses on using an external MOSFET switch to ensure a valid system voltage is present before applying it to the load. This simple circuit uses a reset circuit and the MOSFET to provide a protection circuit during po...