| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an inexpensive electronic control device capable of performing a hardware check at every activation and stop of the electronic control device.SOLUTION: A monitoring control circuit part 130A being an integrated circuit element mounted on an electronic control device 100A includes a self-testing circuit 200 comprising a BIST control block 210, scan chain circuits 217, 220, 230, 240, 250 and a mask circuit 260, and uses the BIST control block 210 to perform self-test by a partially organized scan chain circuits 220, 230, 240 during starting operation. During single item shipping inspection of the integrated circuit element, a microprocessor for inspection performs an external test by an entirely organized scan chain circuit. A portion of a scan chain circuit included for single item inspection is utilized, and a scan test as the electronic control device can be performed with an inexpensive configuration.</p> |
