Semiconductor device with non-volatile memory and random access memory

A non-volatile memory, an SRAM, a DRAM and a control circuit are module-formed into a single packaged. The control circuit assigns addresses to the SRAM and addresses to the DRAM and data necessary to be held for a long period of time is saved in the SRAM. Two chips of DRAM are mapped to the same ad...

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Bibliographic Details
Main Authors MIURA SEIJI, AYUKAWA KAZUSHIGE, HOSHI KOUICHI, IWAMURA TETSUYA, SAITOU YOSHIKAZU
Format Patent
LanguageEnglish
Published 09.08.2005
Edition7
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Summary:A non-volatile memory, an SRAM, a DRAM and a control circuit are module-formed into a single packaged. The control circuit assigns addresses to the SRAM and addresses to the DRAM and data necessary to be held for a long period of time is saved in the SRAM. Two chips of DRAM are mapped to the same address space and refreshed alternately. The plural chips are arranged such that they are mutually laminated, and they are wired by means of a BGA or inter-chip bonding.
Bibliography:Application Number: US20020163364