Semiconductor integrated circuit device having efficiently arranged link program circuitry
AssigneesMitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Engineering Company Limited
InventorsAiko Nishino, Naoya Watanabe, Katsumi Dosaka
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Abstract
Outside core circuit, link circuits are concentratedly arranged in an LT link portion. The LT link information sent from the LT link portion is serially transferred to transfer control circuit. Transfer control portion converts the serially transferred link information to parallel information, and transfers the parallel information to latch circuits arranged in the core circuit and corresponding to circuits requiring the LT link information. An influence on an interconnection layout by laser trimmable link elements is eliminated.
Claims13
A semiconductor integrated circuit device comprising:
- at least one core circuit for performing a predetermined operation;
- LT link circuitry arranged outside said core circuit, for holding programmable internal information for setting an internal state of said core circuit;
- transfer circuitry for serially transferring the information held by said LT link circuitry to said core circuit after power-on;
- a plurality of latch circuits disposed in said core circuit and arranged corresponding to predetermined internal circuits, for latching corresponding internal information for application to corresponding predetermined internal circuits;
- and
- transfer control circuitry arranged in the core circuit, for converting serial information received from said transfer circuitry to parallel information, and transferring the parallel information to said plurality of latch circuits.
Dependencies are inferred from the claim text.