| 摘要 |
PROBLEM TO BE SOLVED: To perform a mounting confirmation test easily at low cost, with no function test pattern required for an in-circuit tester. SOLUTION: A semiconductor integrated circuit element 1 comprises a test signal-dedicated external terminal 4, a switch circuit 5, and a control signal external terminal 6. The operation of the switch circuit 5 is controlled with the control signal inputted from the control signal external terminal 6, and the switch circuit 5 controls continuity/non-continuity between a circuit operation signal external terminal 3 and the test signal-dedicated external terminal 4. With the circuit operation signal external terminal 3 and the test signal- dedicated external terminal 4 electrically connected together, a test signal is inputted from the test signal-dedicated external terminal 4, and with the test signal, the connection state between the circuit operation signal external terminal 3 and the terminal of a printed wiring board 7 is tested. |
