Patent ID: 11881273
Assignee: SOCIONEXT INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 8:
9. A semiconductor storage device provided with a read only memory (ROM) cell, comprising:
a word line extending in a first direction;
a bit line extending in a second direction perpendicular to the first direction; and
a ground power supply line extending in the second direction,, wherein
the ROM cell includes
a first transistor that is a three-dimensional transistor provided between the bit line and the ground power supply line,
a second transistor that is a three-dimensional transistor provided between the bit line and the ground power supply line, formed above the first transistor, channel portions of the first and second transistors overlapping each other as viewed in plan,
a first local interconnect connected to a source of the first transistor,
a second local interconnect connected to a source of the second transistor and also connected with the first local interconnect,
a third local interconnect connected to a drain of the first transistor,
a fourth local interconnect connected to a drain of the second transistor and also connected with the third local interconnect,

gates of the first and second transistors are connected to the word line, and
data is stored in the ROM cell depending on the presence or absence of connection between the first and second local interconnects and the ground power supply line or the presence or absence of connection between the third and fourth local interconnects and the bit line.