| 摘要 |
PROBLEM TO BE SOLVED: To improve reliability by reading tuning information correctly. SOLUTION: An information storage section which stores tuning information is composed of a plurality of magnetic element and latch circuits. The magnetic element and latch circuit 17 has magnetoresistance effect elements M1 and bM1, in which the tuning information is stored. Complementary data are stored in the magnetoresistance effect elements M1 and bM1. After power-on, a power-on detection circuit outputs latch signals LATCH1 and LATCH2. When the latch signal LATCH1 becomes "H", the tuning information is transferred to the latch circuit. When the latch signal LATCH2 becomes "H", the tuning information is latched onto the latch circuit, and supplied to an internal circuit. COPYRIGHT: (C)2004,JPO |
