| 摘要 |
A low voltage sensing scheme reduces active power down standby leakage current in a memory device. A clamping device or diode is used between a Psense amplifier control line (e.g. ACT) and Vcc and/or between an Nsense amplifier control line (e.g. RNL*) and Vss (ground potential). The clamping diode is not enabled during normal memory operations, but is turned on during active power down mode to reduce leakage current through ACT and/or RNL* nodes. The clamping device connected to the ACT node may reduce the voltage on the ACT line during power down mode, whereas the clamping device connected to the RNL* node may increase the voltage on the RNL* line during power down mode to reduce sense amplifier leakage current through these nodes. Because of the rules governing abstracts, this abstract should not be used to construe the claims. |
