| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit which can provide a security function for a memory chip in the semiconductor integrated circuit having an MCP formed by mounting a memory chip and a CPU chip on one package. SOLUTION: In a semiconductor circuit(MCP) having the flash memory chip 6 and CPU chip 4 mounted on one package, a signature code read out of the flash memory chip 6 and a security resetting data inputted from an outside are compared by a comparison register 4f. Only when they match each other, a tri-state buffer 4g enables the flash memory chip 6 to be read.</p> |
