SEMICONDUCTOR DEVICE
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United States of America Patent
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N/A
Issued Date -
Oct 7, 2010
app pub date -
May 16, 2007
filing date -
Jun 2, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A semiconductor device has operation modes selectable through the control by a second microcomputer (113). In a first mode, an operation of a memory controller (105) responding to a memory card command from a memory card interface terminal and an operation of a first microcomputer (106) responding to an IC card command from an IC card interface terminal are separately performed. In a second mode, the first microcomputer operates in response to the IC card command from the IC card interface terminal. In a third mode, the memory controller and the first microcomputer operate in response to an undefined IC card command from the IC card interface terminal. In a fourth mode, the memory controller and the first microcomputer operate in response to the memory card command from the memory card interface terminal. Convenience of the semiconductor device having an IC card function and a memory card function is improved.
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