| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily increase usable memory areas by suppressing cost increase and to easily cope also with security processing with respect to data in the memory areas. <P>SOLUTION: This semiconductor device (100) for an IC card has a memory card interface control circuit (160) which performs input/output control with an external memory card in addition to an input/output interface control circuit (120) which performs input/output control with the outside, and the semiconductor device (100) has a host function of a memory card. A central processor (150) responds to a security processing request supplied to the input/output interface control circuit. The central processor can also give an instruction of memory card access to the memory card interface control circuit. A transfer control circuit (140) responds to a memory card access processing request supplied to the input/output interface control circuit, and gives an instruction of the memory card access to the memory card interface control circuit. <P>COPYRIGHT: (C)2009,JPO&INPIT |
