IC memory with divisional memory portions
AssigneeSony Corporation
InventorYuji Kobayashi
Life of this patent
Estimating the term…
Abstract
An IC (integrated circuit) memory is made by using a chip of a minimum size that can accommodate memory of a desired capacity. Specifically, the chip has the size of (6.33.times.6.34) mm.sup.2, and its effective chip size is (4.33.times.4.43) mm.sup.2 1-port RAM (random access memory) 1 of 792w (word length).times.24 bits (bit width), 1-port RAM 2 of 220w.times.24 bits, and a logic circuit having about 3,000 gates for controlling these RAMs are provided in the effective chip size.
Claims6
An IC memory having a capacity determined by a word length and a bit width of data to be stored therein, said IC memory comprising:
- a chip having an effective chip size defined by a length L1 in a first direction and a length L2 in a second direction;
- and
- a first memory portion and a second memory portion disposed on said chip, said first memory portion having a first word length portion not larger than said length L1 and having said bit width extending in said second direction, said second memory portion having said bit width extending in said first direction and having a second word length portion extending in said second direction, wherein
- a sum of said bit width and said second word length portion is less than said length L2, and
- a sum of said first word length portion and said second word length portion is substantially equal to said word length of said data to be stored.
An IC memory having a capacity determined by a word length and a bit width of data to be stored therein, said IC memory comprising:
- a chip having an effective area less than an actual area of said chip;
- and
- a plurality of memory portions each having a size in accordance with an allocated one of a plurality of regions in said effective area of said chip, wherein
- said chip having a substantially square shape,
- said plurality of memory portions has respective word length portions, and
- a sum of said respective word length portions is substantially equal to said word length of said data to be stored.
Dependencies are inferred from the claim text.