Thin film magnetic memory device having communication function, and distribution management system and manufacturing step management system each using thereof

A distribution management system, comprising:

• a tag chip integrally embedded into a distributed article;
• a database section for collating and registering management data on said distributed article;
• a management data read device for reading said management data from said tag chip in a nonvolatile manner, and collating the read management data for said database section;
• and
• a management data write device wiring said management data from said tag chip in a nonvolatile manner, and collating the read management data for said database section, wherein
• said tag chip comprises a thin film magnetic memory device having a memory array section arranged therein a plurality of magnetic memory cells magnetically holding said management data, and
• said thin film magnetic memory device comprises:
• an array peripheral circuit section for reading and writing data from and to said memory array section;
• an antenna section constituted out of a conductive wiring having at least a lower surface covered with a magnetic film;
• a power supply control section for generating an operating power supply voltage of said tag chip using an induced current generated on said conductive wiring by a radio wave received by said antenna section as a source;
• and
• a transmission and receiving section for instructing said array peripheral circuit section to read and write said management data stored in said memory array section based on the radio wave received by said antenna section between said management data read device and said management data write device.

A manufacturing process management system comprising:

• an ID chip added to a semifinished article subjected to a plurality of predetermined manufacturing processes;
• and
• a process management device transmitting and receiving to and from said ID chip in a non-contact manner in each of said manufacturing processes, wherein
• said ID chip comprises a thin film magnetic memory device having a memory array section having arranged therein a plurality of memory cells magnetically holding said process management data, and
• said thin film magnetic memory device comprises:
• an array peripheral circuit section for reading and writing data from and to said memory array section;
• an antenna section constituted out of a conductive wiring having at least a lower surface covered with a magnetic film;
• a power supply control section generating an operating power supply voltage of said tag chip using an induced current generated on said conductive wiring by a radio wave received by said antenna section as a source;
• and
• a transmission and receiving section for instructing said array peripheral circuit section to read and write said management data stored in said memory array section based on the radio wave received by said antenna section between said management data read device and said management data write device.