lecture22 - ECE520 VLSI Design Lecture 22 Nonvolatile...

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1 ECE520 – Lecture 22 Slide: 1 University of New Mexico Office: ECE Bldg. 230B Office hours: Tuesday 2:00-3:00PM or by appointment E-mail: [email protected] Payman Zarkesh-Ha ECE520 – VLSI Design Lecture 22: Nonvolatile Memories ECE520 – Lecture 22 Slide: 2 University of New Mexico Review of Last Lecture Memory architectures ROM NOR ROMs NAND ROMs
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2 ECE520 – Lecture 22 Slide: 3 University of New Mexico Today’s Lecture Nonvolatile Memories EPROM EEPROM Flash ECE520 – Lecture 22 Slide: 4 University of New Mexico Nonvolatile Memories All present non-volatile memories are based on ROM memory configurations All retain the single BL, although the sensing may be differential, using comparison to some reference voltage or replica BL The key to present memories is the ability to change the V T of the transistor by adding or removing charge from a floating gate
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3 ECE520 – Lecture 22 Slide: 5 University of New Mexico Erasable Programmable ROM (EPROM)
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This note was uploaded on 01/11/2011 for the course ECE 520 taught by Professor Zarkesh-ha,p during the Fall '08 term at New Mexico.

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lecture22 - ECE520 VLSI Design Lecture 22 Nonvolatile...

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