| 摘要 |
PROBLEM TO BE SOLVED: To achieve a concise IC connection inspection by using the serial communication function of an IC.SOLUTION: Two ICs (one is EEPROM) are mounted. The IC outputs a recognition signal from a serial data input/output terminal as a clock is input to a clock input terminal and predetermined serial data synchronized with the clock is input to the serial data input/output terminal. Targetting a circuit board that includes first and second wiring patterns for connecting each clock input terminal and each serial data input/output terminal, electricity is conducted to the first and second wiring patterns to abut first and second inspection needles on the circuit board. A clock is supplied to the first inspection needle, and first predetermined serial data is supplied to the second inspection needle to determine whether a first recognition signal is detectable in the second inspection needle. Then, second predetermined serial data is supplied to the second inspection needle while the clock is maintained to determine whether a second recognition signal is detectable in the second inspection needle. Reading and writing are also tested. |
