Title :
A Highly Reliable Logic NVM "eCFlash (Embedded CMOS Flash)" Utilizing Differential Sense-Latch Cell with Charge-Trapping Storage
Author :
Ogura, T. ; Mihara, M. ; Kawajiri, Y. ; Kobayashi, K. ; Shimizu, S. ; Shukuri, S. ; Ajika, N. ; Nakashima, M.
Author_Institution :
GENUSION, Inc., Amagasaki
Abstract :
A new logic NVM "eCFlash (embedded CMOS Flash)" has been developed without any additional process steps in a 0.25 um technology. In this architecture, a novel differential sense-latch cell with charge-trapping storage is adopted. This unique cell structure functions as a differential sense amplifier as well as a data latch, therefore mass data can be restored to each cell\´s latch simultaneously for static data output with high sensitivity and low power consumption. Furthermore the handling scheme of twice the breakdown voltage with novel charge pump circuit and high voltage driver is demonstrated. By utilizing these techniques, a highly reliable Logic NVM is realized; 100 K cycling endurance and data retention of 20 years at 150C.
Keywords :
CMOS logic circuits; flash memories; random-access storage; charge-trapping storage; differential sense amplifier; differential sense-latch cell; embedded CMOS flash; logic nonvolatile memory; Breakdown voltage; CMOS logic circuits; CMOS process; CMOS technology; Charge pumps; Differential amplifiers; Driver circuits; Energy consumption; High power amplifiers; Latches;
Conference_Titel :
Non-Volatile Semiconductor Memory Workshop, 2008 and 2008 International Conference on Memory Technology and Design. NVSMW/ICMTD 2008. Joint
Conference_Location :
Opio
Print_ISBN :
978-1-4244-1546-5
Electronic_ISBN :
978-1-4244-1547-2
DOI :
10.1109/NVSMW.2008.29
