Hybrid tester architecture
View Patent ↗A hybrid tester architecture for testing a plurality of semiconductor devices in parallel is disclosed. The hybrid tester architecture includes per-pin formatting circuitry having data input circuitry and clock input circuitry and shared timing circuitry coupled to the clock input circuitry. The shared timing circuitry generates programmed timing signals. Per-pin data circuitry couples to the data input circuitry and generates drive data and expected data values associated with each individual device pin. The per-pin formatting circuitry responds to the programmed timing signals to produce tester waveforms in accordance with the per-pin data.
1. A hybrid tester architecture for testing a plurality of semiconductor devices in parallel, each semiconductor device having a predetermined number of pins, the hybrid tester architecture including:
a plurality of formatting circuits, each having data input circuitry and clock input circuitry, the plurality of formatting circuits adapted for a one-to-one correspondence with each pin of each semiconductor device;
shared timing circuits coupled to the clock input circuitry, each of the shared timing circuits operative to generate programmed timing signals and adapted for coupling to more than one pin of the semiconductor devices; and
a plurality of data circuits coupled to the data input circuitry, each data circuit of the plurality of data circuits adapted for a one-to-one correspondence with each pin of each semiconductor device and operative to generate drive data associated with each individual device pin.
2. A hybrid tester architecture according to claim 1 wherein:
the plurality of data circuits comprises a plurality of memory blocks, each memory block corresponding to one of the predetermined number of pins.
3. A hybrid tester architecture according to claim 1 and further including:
a capture memory for storing fail data relating to the plurality of semiconductor devices; and redundancy analyzer circuitry for processing the fail data into a repair solution.
4. A hybrid tester architecture according to claim 3 and further including a computer workstation and wherein the redundancy analyzer is coupled to the computer workstation and operative, after generating repair solutions, to transmit the repair solutions to the computer workstation.