Device for use in developing and testing a one-chip microcompute

Details Device for use in developing and testing a one-chip microcompute Device for use in developing and testing a one-chip microcompute

1989-06-21

1991-06-04

Shaw, Gareth D.

Boots, shoes, and leggings

3649256, 36496576, 371 161, G06F 1100

Patent

active

050219960

ABSTRACT:
A microcomputer universal package has testing terminals and switching circuitry for selecting first and second operations. In the first operation, as an evaluator type, a test device is connected to the testing terminals of the package. In the second operation, as a piggyback type, a rewritable ROM (EPROM) is connected to the testing terminals of the package. The testing terminals are automatically switched for the particular operation by the switching circuitry. Accordingly, the same device can be used as the evaluator type chip and the piggyback-type chip, which reduces the time and the cost of developing the program. In addition, since the piggyback-type chip, the evaluator-type chip, and a mask-type ROM chip can be constructed with the same pin arrangement, the program can be evaluated by the evaluator-type chip in the mask-type ROM mounting board that becomes the final product without requiring an interface board.

REFERENCES:
patent: 4128873 (1978-12-01), Lamiaux
patent: 4153933 (1979-05-01), Blume, Jr. et al.
patent: 4277827 (1981-07-01), Carlson et al.
patent: 4349870 (1982-09-01), Shaw et al.
patent: 4486827 (1984-12-01), Shima et al.
patent: 4489414 (1984-12-01), Titherley
patent: 4504926 (1985-03-01), Toyoda
patent: 4524417 (1985-04-01), Kimoto
patent: 4527234 (1985-07-01), Bellay
patent: 4622647 (1986-11-01), Saenard et al.
patent: 4628448 (1986-12-01), Murao
patent: 4641308 (1987-02-01), Sacarisen et al.
patent: 4670838 (1987-06-01), Kawata
patent: 4672534 (1987-06-01), Kamiya

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