JP2010129135A5 - - Google Patents
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- JP2010129135A5 JP2010129135A5 JP2008304127A JP2008304127A JP2010129135A5 JP 2010129135 A5 JP2010129135 A5 JP 2010129135A5 JP 2008304127 A JP2008304127 A JP 2008304127A JP 2008304127 A JP2008304127 A JP 2008304127A JP 2010129135 A5 JP2010129135 A5 JP 2010129135A5
- Authority
- JP
- Japan
- Prior art keywords
- charging time
- external power
- charge pump
- voltage value
- power source
- 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.)
- Pending
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Claims (2)
外部電源の電圧値を判定する判定手段と、
前記判定手段によって判定された外部電源の電圧値がしきい値以下の場合に、前記チャージポンプによる充電時間を変更してメモリセルに対するオペレーションを制御する制御手段とを含む、半導体装置。 A semiconductor device for supplying a voltage to a memory cell by a charge pump,
Determination means for determining the voltage value of the external power supply;
And a control unit that controls an operation on the memory cell by changing a charging time by the charge pump when a voltage value of the external power source determined by the determination unit is equal to or less than a threshold value.
前記判定手段によって判定された外部電源の電圧値が第１のしきい値以下であり、かつ第２のしきい値よりも大きい場合に、前記第１の充電時間よりも長い第２の充電時間を用いて前記チャージポンプに充電を行なわせ、
前記判定手段によって判定された外部電源の電圧値が第２のしきい値以下の場合に、前記第２の充電時間よりも長い第３の充電時間を用いて前記チャージポンプに充電を行なわせる、請求項１記載の半導体装置。 The control unit causes the charge pump to charge using a first charging time when the voltage value of the external power source determined by the determination unit is greater than a first threshold value.
A second charging time longer than the first charging time when the voltage value of the external power source determined by the determining means is less than or equal to the first threshold and greater than the second threshold. To charge the charge pump using
When the voltage value of the external power source determined by the determination unit is equal to or lower than a second threshold value, the charge pump is charged using a third charging time longer than the second charging time; The semiconductor device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008304127A JP2010129135A (en) | 2008-11-28 | 2008-11-28 | Semiconductor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008304127A JP2010129135A (en) | 2008-11-28 | 2008-11-28 | Semiconductor device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2010129135A JP2010129135A (en) | 2010-06-10 |
| JP2010129135A5 true JP2010129135A5 (en) | 2011-12-01 |
Family
ID=42329415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008304127A Pending JP2010129135A (en) | 2008-11-28 | 2008-11-28 | Semiconductor device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2010129135A (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62177787A (en) * | 1986-01-30 | 1987-08-04 | Seiko Epson Corp | Semiconductor memory device |
| JP2923985B2 (en) * | 1989-07-26 | 1999-07-26 | 日本電気株式会社 | EEPROM device |
| JPH08203281A (en) * | 1995-01-30 | 1996-08-09 | Nec Corp | Semiconductor device |
| JP5102413B2 (en) * | 2000-07-12 | 2012-12-19 | ユナイテッド・マイクロエレクトロニクス・コーポレイション | Apparatus for generating a second power supply voltage from a first power supply voltage, a reference voltage generator, and a method and apparatus for generating a desired voltage |
| JP3931615B2 (en) * | 2001-10-17 | 2007-06-20 | 株式会社デンソー | Boosted voltage generating circuit, boosted voltage generating method of semiconductor memory device, and semiconductor memory device |
| KR100680503B1 (en) * | 2004-11-08 | 2007-02-08 | 주식회사 하이닉스반도체 | Circuit for generating an internal voltage in semiconductor memory device |
| JP2006216147A (en) * | 2005-02-03 | 2006-08-17 | Seiko Instruments Inc | Non-volatile memory circuit |
-
2008
- 2008-11-28 JP JP2008304127A patent/JP2010129135A/en active Pending
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