发明名称 |
Power management system for serial EEPROM device |
摘要 |
Power consumption of a serial EEPROM is reduced while simultaneously precluding data corruption during write operations. These results are achieved by operating a brownout detector in the device to sense EEPROM supply voltage below a predetermined level and thereupon to place the EEPROM in a reduced power mode, but only during an interval that a write sequence is taking place. Such an interval includes loading of data in a temporary storage cache and writing the loaded data into the EEPROM. At the same time that the low voltage level is detected during a write sequence, any load or write operation then in progress is aborted. The brownout detector is intentionally left disabled or in a sleep mode during any read mode or standby mode since there is no jeopardy of corrupting the EEPROM memory during those times.
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申请公布号 |
US5371709(A) |
申请公布日期 |
1994.12.06 |
申请号 |
US19930041067 |
申请日期 |
1993.04.01 |
申请人 |
MICROCHIP TECHNOLOGY INCORPORATED |
发明人 |
FISHER, RICHARD J.;ALEXANDER, SAMUEL E. |
分类号 |
G11C5/14;G11C16/22;(IPC1-7):G11C5/14 |
主分类号 |
G11C5/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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