Patent Number: 6,166,992

Title: Semiconductor device

Abstract: A semiconductor device includes a one-shot pulse generating circuit that generates a one-shot pulse having a predetermined pulse width at a rise or fall timing of a first clock signal, a cycle time measuring circuit that measures a cycle-time of the first clock signal from the one-shot pulse output from the one-shot pulse generating circuit, an internal clock generating circuit that generates a second clock signal based on the cycle time measured by the cycle time measuring circuit and the one-shot pulse output from the one-shot pulse generating circuit. The second clock signal has a cycle time identical to the first clock signal and has a rise or fall timing which is advanced by a specific time than that of the first clock signal, and the specific time is obtained by subtracting the cycle time of the first clock signal from a predetermined time, and a data output circuit that outputs data after a predetermined delay time from the rise or fall timing of the second clock signal.

Inventors: Takemae; Yoshihiro (Kawasaki, JP), Taguchi; Masao (Kawasaki, JP), Kodama; Yukinori (Kawasaki, JP), Yanagisawa; Makoto (Kawasaki, JP), Suzuki; Takaaki (Kawasaki, JP), Ogawa; Junji (Kawasaki, JP), Hatakeyama; Atsushi (Kawasaki, JP), Mochizuki; Hirohiko (Kawasaki, JP), Kawai; Hideaki (Kawasaki, JP)

Assignee: Fujitsu Limited

International Classification: G11C 7/22 (20060101); G11C 7/00 (20060101); H03K 5/1534 (20060101); H03K 3/00 (20060101); H03K 5/22 (20060101); H03K 3/356 (20060101); H03K 5/153 (20060101); H03K 5/24 (20060101); H03K 5/13 (20060101); G11C 008/00 ()

Expiration Date: 12/26/2017