Renesas Technology Corp.

Hitachi Ulsi Systems Co., Ltd.

Hitachi, Ltd.

Other

Renesas Electronics Corporation

Hitachi Vlsi Engineering Corp.

Yosuke Yukawa

Hirotaka Nishizawa

Atsushi Shiraishi

Takashi Totsuka

Haruji Ishihara

Motoki Kanamori

Atsushi Shikata

Kazunori Furusawa

Kenji Kozakai

Yuusuke Jono

Manabu Inoue

Shigemasa Shiota

Osamu Nagashima

Takeshi Suzuki

Katsuyuki Sato

Hitoshi Kawaguchi

Yasunori Yamaguchi

Makoto Morino

Masahiro Yoshida

Tetsuya Saeki

Yuichiro Onuki

Jun Mitake

Terutaka Okada

Kenzo Matsumura

An IC card capable of reinforcing the prevention of the electrostatic damage without causing a rise in the cost of a semiconductor integrated circuit chip. The semiconductor integrated circuit chip () is mounted on a card substrate (), and plural connection terminals () are exposed. The connection terminals are connected to predetermined external terminals () of the semiconductor integrated circuit chip, first overvoltage protection elements () connected to the external terminals are integrated in the semiconductor integrated circuit chip, and second overvoltage protection elements such as surface-mount type varistors () connected to the connection terminals are mounted on the card substrate. The varistors are variable resistor elements having a current tolerating ability greater than that of the first overvoltage protection elements. The varistors have been selected by taking into consideration a relationship between the characteristics and the ability of the first overvoltage protection elements contained in the semiconductor integrated circuit chip, and exhibit the effect for preventing the electrostatic damage.

IC card with terminals for direct access to internal components

Nonvolatile memory apparatus

IC card with bonding wire connections of different lengths

IC card

A multifunction IC card (MFC) has compatibility with a multimedia card, an SD card, etc. in that connector terminals (#through #) are disposed on a card substrate () in two rows in a zigzag fashion, and realizes multifunction facilities in that a memory card unit () and an SIM (Subscriber Identity Module) card unit () are respectively connected and mounted to predetermined terminals of the connector terminals (#through #). The memory card unit () and the SIM card unit () are respectively separately provided with areas for storing secret codes for security. Thus, one IC card is capable of implementing multifunction facilities different in security level. Owing to the adoption of a plural-column layout corresponding to a form typified by the zigzag fashion in an array of the connector terminals, a relatively simple structure can be adopted in a card slot.

A memory card () includes an electrically rewritable non-volatile memory (), a data processor () having a function of executing instructions, and managing the allocation of file data in the non-volatile memory, an interface control circuit () having a function of establishing an external interface, for controlling the execution of instructions by the data processor in response to external commands and for controlling access to the non-volatile memory and a buffer memory () for temporarily storing the file data. The interface control circuit includes command control means for decoding a first command externally supplied and for instructing the data processor to fetch an instruction from the buffer memory and to operate.

Nonvolatile semiconductor memory apparatus having buffer memory for storing a program and buffering work data

A multifunction IC card (MFC) has compatibility with a multimedia card, an SD card, etc. in that connector terminals (#through #) are disposed on a card substrate () in two rows in a zigzag fashion, and realizes multifunction facilities in that a memory card unit () and an SIM (Subscriber Identity Module) card unit () are respectively exclusively connected and mounted to predetermined terminals of the connector terminals (#through #). The memory card unit () and the SIM card unit () are respectively separately provided with areas for storing secrete codes for security. Thus, one IC card is capable of implementing multifunction facilities different in security level. Owing to the adoption of a plural-column layout corresponding to a form typified by the zigzag fashion in an array of the connector terminals, a relatively simple structure can be adopted in a card slot, wherein the amounts of protrusion of slot terminals in a card slot are alternately changed in association with a zigzag section, and the slot terminals are disposed in a row in parallel as a whole.

Memory card having buffer memory for storing testing instruction

IC card with controller and memory chips

Memory card having a buffer memory for storing testing instruction

Growing community of inventors

Kokubunji, Japan

Yosuke Yukawa