Multi-port memory device with stacked banks

Details Multi-port memory device with stacked banks Multi-port memory device with stacked banks

2006-10-10

2006-10-10

Auduong, Gene N. (Department: 2827)

Static information storage and retrieval

Addressing

Multiple port access

C365S189040, C365S189050

Reexamination Certificate

active

07120081

ABSTRACT:
A multi-port memory device with stacked banks is provided. The multi-port memory device includes a number of ports, and a plurality of stacked banks, two or more of which share one data line sense amplifier. Each stacked bank includes a plurality of memory cells. Data line sense amplifiers are connected respectively between the stacked banks and read buffers to sense data read from memory cells of a selected bank among the stacked banks. The read buffers are connected respectively to the ports, store memory cell data output from the data line sense amplifiers, and output the stored data to the ports. Read data lines connect the data line sense amplifiers with the read buffers, respectively. Write buffers are connected respectively to the ports, and convert and store write data received in serial through the ports in a parallel form. Write data lines connect the data line drivers with the write buffers, respectively. Accordingly, since a plurality of stacked banks can be accessed independently and can perform reading and writing operations independently, a data throughput increases and a data reading speed and data writing speed are improved.

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