logoxgvb
Joined: 30 Aug 2010
Posts: 1580
Read: 0 topics
Warns: 0/5
Location: hdfttv
|
 Posted: Wed 16:34, 22 Dec 2010 Post subject: ugg prezzo Used method to reduce red MCS-51 microc |
|
|
Used method to reduce red MCS-51 microcontroller reset voltage requirements of
O,[link widoczny dla zalogowanych], K2 ~> 0. The solution of this equation is sinusoidal damped oscillation, this situation could easily lead to unreliable CPU reset should avoid it. There are two cases the waveform in Figure 4 (a), (b) below. 0. ...,[link widoczny dla zalogowanych], UC20) ● U. 0 (a) large damping coefficient (b) damping coefficient of small figure 4b-4ac RL + RK). When Kan t ~ art + ?. Ridicule can make U into a reliable working condition. 3 shows circuit implementation and realization of the circuit block diagram shown in Figure 7, power supply with 5V open map 6UR (t) plot off the power, Rw simulation in Figure 2, the power output resistance Ro,[link widoczny dla zalogowanych], transistor and analog comparator in Figure 2 switch K. With ammeter, voltmeter, monitoring working conditions of the circuit. * 318 * Shanghai University of Engineering Science Volume 15 of the circuit block diagram of Figure 7 to verify the realization of the above analysis, the first ends of the shorted transistor,[link widoczny dla zalogowanych], single chip voltage regulator Rw to below the minimum operating voltage 2.7V. At this time,[link widoczny dla zalogowanych], close the switch l <o, the power microcontroller not working properly, that can not be cured within the program in the microcontroller ports P1.0 issued 1kHz square wave. After both ends of the analog switch off, turn the voltage to 4.5V the comparator over, then re-close the switch l (o, at this time when the power supply to the charging voltage of 4.5V to c, the transistor turn, the microcontroller work, produced by microcontroller ports P1.0 square wave. oscilloscope will see the output port P10 wave 1 Yo. References [1] Paul set the people. Low-Power MCU system design. Beijing: Beijing Aerospace University Press, 1994 [2] Renyong Tai, Shi Xifu. ordinary differential equations. Shenyang: Liaoning People's Publishing House, 1982 [3] Ding colleagues. the basis of ordinary differential equations. Shanghai: Shanghai Science and Technology Press, 1984 【4 ] Wu positive. Signal and Linear System Analysis. Beijing: Higher Education Press, 1986REDUCINGTHEREQUIREMENTFoRMCS. 51SINGLEMoNoLITHICPROCESSoRToCoRRECTDISLOCATIoNBYMEANS0lFoVERCHARGEWangZhimin (m weir DonghuV ~ atiorudCollege, laIlIai200126) AbstractThispaperprovidesamethodwhichmakesthemonolithicprocessorbeabletOOOlTeetdislo-cationandworknormallyandreliablyineflsethevoltagefallelowtheoriginallysetleve1.Thefeasibilityofthismethodhaeensuccessfullytestedandverifiedbothmathematicallyandexperi-mentally.KeywordsMonolithicprocessorsCircuitdesignOutputresistance (edit Jian Chang)
相关的主题文章：
[link widoczny dla zalogowanych]
[link widoczny dla zalogowanych]
[link widoczny dla zalogowanych]
The post has been approved 0 times
|
|
