Semiconductor storage device and manufacturing method thereof

A manufacturing method of a semiconductor storage device, comprising:

• forming an organic board, on which external connection terminals are provided on one surface side and in which internal wiring is formed, as an individual piece;
• bonding a lead frame to another surface side that is a surface side opposite to the one surface side of the organic board;
• providing a semiconductor memory chip on a surface side, which is opposite to a surface adhered to the organic board, of the lead frame via an adhesive material;
• providing a controller chip for controlling the semiconductor memory chip on the another surface side via an adhesive material;
• electrically connecting the semiconductor memory chip and the controller chip with the internal wiring by using a metal wire without going through the lead frame;
• sealing the semiconductor memory chip, the controller chip, and the metal wire with resin and sealing the another surface side with resin with the one surface side being exposed to form a resin mold portion, and
• cutting off portion of the lead frame, the portion protruding from a side face different from a side on which the organic board is provided relative to the semiconductor memory chip, within side faces of the resin mold portion which are substantially perpendicular to the one surface side.