摘要:
Techniques for providing a direct injection semiconductor memory device having ganged carrier injection lines are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus including a first region coupled to a bit line and a second region coupled to a source line. The apparatus may also comprise a body region spaced apart from and capacitively coupled to a word line, wherein the body region is electrically floating and disposed between the first region and the second region. The apparatus may further comprise a third region coupled to a constant voltage source via a carrier injection line configured to inject charges into the body region through the second region.
摘要:
A single level gate NVM device (20) includes a floating gate FET (11) and a capacitor (12) fabricated in two P-wells (27, 28) formed in an N-epitaxial layer (22) on a P-substrate (21). P+ sinkers (29, 31) and N-type buried layers (25, 26) provide isolation between the two P-wells (27, 28). The NVM device (20) is programmed or erased by biasing the FET (11) and the capacitor (12) to move charge carriers onto or away from a conductive layer (36) which serves as a floating gate (14) of the FET (11). Data is read from the NVM device (20) by sensing a current flowing in the FET (11) while applying a reading voltage to the capacitor (12).
摘要翻译:单级门NVM器件(20)包括在形成在P衬底上的N外延层(22)中的两个P阱(27,28)中制造的浮栅FET(11)和电容器(12) 21)。 P +沉降片(29,31)和N型掩埋层(25,26)提供两个P阱(27,28)之间的隔离。 通过偏置FET(11)和电容器(12)来将NVM器件(20)编程或擦除,以将电荷载流子移动到或用作FET的浮置栅极(14)的导电层(36) 11)。 通过感测在FET(11)中流动的电流同时向电容器(12)施加读取电压,从NVM器件(20)读取数据。
摘要:
A voltage reference circuit (40) is provided for producing a low temperature-coefficient analogue trim value. A pair of EEPROMs (50 and 60) are arranged such that the trim value is the difference between two EEPROM transistor threshold voltages. The substantially temperature dependent components of threshold voltage cancel out leaving only the substantially temperature independent trim value. Therefor the temperature coefficient of the voltage reference circuit (40) is negligible.