Static information storage and retrieval – Systems using particular element – Semiconductive
Patent
1990-03-20
1992-09-22
Fears, Terrell W.
Static information storage and retrieval
Systems using particular element
Semiconductive
365208, G11C 1300
Patent
active
051503255
ABSTRACT:
A Bi.CMOS semiconductor memory device is provided which includes an arrangement to simultaneously select a plurality of memory cells, followed by using a 3 bit Z addressing arrangement to determine a read or write operation for the simultaneously selected memory cells. To speed up the word line selection, a static selection type operation is used with the word line selecting voltage being greater than signal amplitude of the data lines during the write operation. Also, to speed up the read operation, separate common I/O lines are provided for the read and write operations. Read signals are transmitted as curent signals, and then converted to voltage signals for improving reading speed. Also, improved arrangements are provided for resistance structure, logic circuitry, input circuitry, fuse cutting circuitry, drive circuitry, power circuitry, electrostatic protection circuitry, layout structure and testing methods for the semiconductor device.
REFERENCES:
patent: 4961170 (1990-10-01), Fujitsu et al.
Ishii Kyoko
Kinoshita Yoshitaka
Kitsukawa Goro
Kobayashi Yutaka
Matsumoto Tetsurou
Fears Terrell W.
Hitachi , Ltd.
Hitachi VLSI Engineering Corp
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