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A 2.7 V only 8 Mb/spl times/16 NOR flash memory

By: Akaogi, T.; Kuo, T.H.; Chen, J.C.; Kasa, Y.; Cleveland, L.E.; Kim, Y.K.; Leong, N.; Chung, C.K.;

1996 / IEEE / 0-7803-3339-X

Description

This item was taken from the IEEE Periodical ' A 2.7 V only 8 Mb/spl times/16 NOR flash memory ' This paper describes a 80 ns, 2.7 V to 3.6 V single voltage supply 8 Mb/spl times/16 flash memory. It uses a high speed Vcc detector to control the wordline boost level and an intelligent programming algorithm to optimize the program time. Erase is achieved by a new low Vcc negative charge pump. The device is fabricated using a 0.5 /spl mu/m design rule, double layer metal, dual layer polysilicon, and triple well CMOS. The single transistor cell size is 1.7/spl times/1.7 /spl mu/m/sup 2/. The memory cell uses a conventional drain side channel hot electron for programming and negative gate Fowler-Nordheim tunneling on the source side for erase.