Hitachi, Ltd.

Hitachi Microcomputer Engineering, Ltd.

Hitachi Microcomputer System, Ltd.

Fumiaki Matsuzaki

Yoji Nishio

Fumio Murabayashi

Akira Uragami

Shoichi Kotoku

Manabu Shibata

Yoshitatsu Kojima

Takashi Kuraishi

Takaharu Morishige

Yoshihiro Tsuru

A semiconductor integrated circuit device with a built-in memory circuit group is disclosed, wherein wiring is started from a data terminal position near a data exchange portion of a memory circuit group to reduce the length of a wiring. Accordingly, an operation speed can be improved by the reduction of wiring capacitance and a ratio of unwired wirings can be reduced by reduction of an occupying ratio of wiring channels.

Semiconductor integrated circuit device with built-in memory circuit

A semiconductor gate array device compatible with ECL and/or TTL, wherein the input buffer unit includes a TTL input stage, an ECL input stage and a common output stage, and the output buffer unit includes a common input stage, an ECL output stage and a TTL output stage. When the device is to be used as a TTL input interface, the TTL input stage and the common output stage are coupled together and when the device is to be used as an ECL input interface, the ECL input stage and the common output stage are coupled together. When used as a TTL output interface, the common input stage and the TTL output stage are coupled together and when used as an ECL output interface, the common input stage and the ECL output stage are coupled together. Therefore, the input/output interfaces exhibit general applicability to meet the user's demands, yet enabling the layout areas of the input and output buffer portions to be decreased.

Semiconductor gate array device compatible with ECL signals and/or TTL

Growing community of inventors

Takasaki, Japan

Fumiaki Matsuzaki