Browsing by Author "Ho, Eric"

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Novel ultra-low voltage and high-speed programming/erasing schemes for SONOS flash memory with excellent data retention
(2007)
Chung, Steve S.
;
Tseng, Y. H.
;
Lai, C. S.
;
Hsu, Y. Y.
;
Ho, Eric
A novel cell operation scheme featuring low voltage, high speed, and excellent data retention has been proposed for SONOS flash memory First, in 1bit/cell operation, program is achieved by a back-bias assisted hot hole injection, while erase is achieved by forward-bias assisted electron injection. For a thick tunnel oxide (50A degrees), the ultra-low voltage (similar to 5V) and ultra-fast speed (<1 mu sec) operation has been the record reported to date. On the other hand, a 2 bit/cell operation is also demonstrated, in which very good retention can be achieved in comparison to conventional operation schemes, e.g., CHE (channel hot electron) or BTB(Band-to-band) tunneling etc.