JP2011210322A5 - - Google Patents

Download PDF

Info

Publication number
JP2011210322A5
JP2011210322A5 JP2010078412A JP2010078412A JP2011210322A5 JP 2011210322 A5 JP2011210322 A5 JP 2011210322A5 JP 2010078412 A JP2010078412 A JP 2010078412A JP 2010078412 A JP2010078412 A JP 2010078412A JP 2011210322 A5 JP2011210322 A5 JP 2011210322A5
Authority
JP
Japan
Prior art keywords
transformer
low
power supply
voltage level
turned
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2010078412A
Other languages
Japanese (ja)
Other versions
JP5381864B2 (en
JP2011210322A (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2010078412A priority Critical patent/JP5381864B2/en
Priority claimed from JP2010078412A external-priority patent/JP5381864B2/en
Publication of JP2011210322A publication Critical patent/JP2011210322A/en
Publication of JP2011210322A5 publication Critical patent/JP2011210322A5/ja
Application granted granted Critical
Publication of JP5381864B2 publication Critical patent/JP5381864B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Description

給電路Hの電圧レベルと停止信号に対する変圧部制御信号の関係を図2に示す。図2において、停止信号がLOWの場合は、必ず変圧部6がオフ(変圧部制御信号がLOW)となる。制御部10がマスタとなり変圧部6をオフできるようにするためである。停止信号がHIGHの場合は、給電路Hの電圧レベルにより変圧部6の状態が変わる。給電路Hの電圧レベルがLOW(Vin≦Vt)なら変圧部6がオフ(変圧部制御信号がLOW)、給電路Hの電圧レベルがHIGH(Vin>Vt)なら変圧部6がオン(変圧部制御信号がHIGH)する。このようにすることで、給電路Hの電圧レベルが低い場合は自動的に変圧部6をオフでき制御部10の制御が簡易になる。なおVtはLOWまたはHIGHを識別する閾値である。 FIG. 2 shows the relationship between the voltage level of the feed line H and the transformer control signal with respect to the stop signal. In FIG. 2 , when the stop signal is LOW, the transformer 6 is always turned off (the transformer control signal is LOW). This is because the control unit 10 becomes a master so that the transformer 6 can be turned off. When the stop signal is HIGH, the state of the transformer 6 changes depending on the voltage level of the power supply path H. The voltage level of the power supply path H is LOW (Vin ≦ Vt) If transformer 6 is turned off (transformer control signal is LOW), the voltage level of the power supply path H is HIGH (Vin> Vt) If transformer 6 Gao emissions (strange The pressure part control signal is HIGH. By doing in this way, when the voltage level of the feeding path H is low, the transformer 6 can be automatically turned off, and the control of the controller 10 is simplified. Vt is a threshold value for identifying LOW or HIGH.

以上のように構成された本発明の一実施の形態におけるフラッシュメモリ用電源装置について、図3、図4を用いて動作を説明する。図3はフラッシュメモリ用電源装置1の動作を説明する図である。また、図4は各部の信号のレベルを説明するための図である。 The operation of the power supply device for a flash memory according to an embodiment of the present invention configured as described above will be described with reference to FIGS. FIG. 3 is a diagram for explaining the operation of the flash memory power supply device 1. FIG. 4 is a diagram for explaining the signal level of each part.

まず、制御部10は、フラッシュメモリ3が搭載される電子装置のシステムがオンされたとき(S01)、制御部10はスリープ状態から復帰し、所定時間Tkの間だけ停止信号をLOWにする(S02)。その後、停止信号をHIGHにする。これが図4のT1〜T3に相当する。次に制御部10はコンデンサ7が十分に電荷を蓄積できる時間充電時間Tc(図4のT3〜T4)が経過後にメモリアクセスを開始(図4のT4)する(S03)。 First, when the system of the electronic device in which the flash memory 3 is mounted is turned on (S01), the control unit 10 returns from the sleep state and sets the stop signal to LOW for a predetermined time Tk ( S02 ). Later, the stop signal to HIGH. This corresponds to T1 to T3 in FIG. Next, the control unit 10 starts a memory access (T4 in FIG. 4) after a time charging time Tc (T3 to T4 in FIG. 4) in which the capacitor 7 can sufficiently accumulate electric charge has elapsed (S03).

JP2010078412A 2010-03-30 2010-03-30 Power supply for flash memory Active JP5381864B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010078412A JP5381864B2 (en) 2010-03-30 2010-03-30 Power supply for flash memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010078412A JP5381864B2 (en) 2010-03-30 2010-03-30 Power supply for flash memory

Publications (3)

Publication Number Publication Date
JP2011210322A JP2011210322A (en) 2011-10-20
JP2011210322A5 true JP2011210322A5 (en) 2013-05-02
JP5381864B2 JP5381864B2 (en) 2014-01-08

Family

ID=44941212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010078412A Active JP5381864B2 (en) 2010-03-30 2010-03-30 Power supply for flash memory

Country Status (1)

Country Link
JP (1) JP5381864B2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3816788B2 (en) * 2001-11-22 2006-08-30 株式会社東芝 Nonvolatile semiconductor memory device
US6735117B2 (en) * 2002-07-01 2004-05-11 Honeywell International Inc. Hold-up power supply for flash memory
JP4284247B2 (en) * 2004-08-13 2009-06-24 株式会社東芝 Nonvolatile semiconductor memory device

Similar Documents

Publication Publication Date Title
JP6018980B2 (en) Free standing power system
MY187743A (en) Electronic vapour provision system
EP2833502A3 (en) Adaptive charging technique and circuitry for a battery/cell using multiple charge circuits and temperature data
US20150091536A1 (en) Semiconductor device and control method thereof
JP2012120168A5 (en) Offset removal circuit
CN106956603B (en) low power proximity detection device
JP2013225297A (en) Control apparatus, control method, program and semiconductor device
JP2012050208A5 (en) POWER SUPPLY CIRCUIT, DEVICE EQUIPPED WITH THE CIRCUIT, AND METHOD FOR CONTROLLING POWER SUPPLY CIRCUIT
JP2013007890A (en) Image forming apparatus, and power supply control method
FR2966943B1 (en) DRIVING DYNAMIC SYSTEMS BY MEASURING SHORT CIRCUIT CURRENT OF A PHOTOVOLTAIC GENERATOR
JP2016222187A (en) Electronic control device
JP2013258895A5 (en)
JP6442262B2 (en) Voltage detection circuit
US20140040649A1 (en) Charging Method and an Electronic Apparatus Using Thereof
JP2014217218A (en) Charger
JP5509135B2 (en) Electronic equipment
CN105446446A (en) Power supply control device and method of hardware watchdog
EP2990908A1 (en) Pulse width modulation based real-time clock system and associated method
WO2012006028A3 (en) System and method for dynamically managing power in an electronic device
TW200634833A (en) Internal voltage generating circuit
CN102480225A (en) Direct voltage supplying device
JP5308298B2 (en) Reset circuit
JP2013143867A5 (en) Power supply system, control device, and control method
JP2011210322A5 (en)
WO2014015838A1 (en) Power supply circuit and power supply method