Semiconductor integrated circuit device having multi-port RAM me

Details Semiconductor integrated circuit device having multi-port RAM me Semiconductor integrated circuit device having multi-port RAM me

1997-01-28

1998-10-27

Swann, Tod R.

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

711100, 711101, 711149, 36518902, 36523005, G06F 1200, G06F 1300

Patent

active

058290150

ABSTRACT:
Multi-port RAM having a RAM core and signal transfer circuit transforming a predetermined signal between the RAM core and a random logic portion. The signal transfer circuit includes a scan path circuit. The scan path circuit for an address signal (ASCAN0), a scan path circuit for a data input signal (DSCAN0) and a selector circuit (ASEL) are provided on the write side, and no scan path circuit is provided on the read side. A read address is supplied through selector circuits (FSEL 2 and RSEL2) termed read address supply device provided on the read side. Thus, reduction of the test circuit allows area reduction of a chip and cost cutting in a semiconductor integrated circuit.

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Chan et al., "Advanced Structured Arrays Combine High Density Memories with Channel-Free Logic Array", IEEE 1987 CICC, (1987), pp. 39-43.

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