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Question: Can we implement SPI slave in CY7C63803-SXC?
SPI slave can be implemented in CY7C63803-SXC even though there is no explicit module for SPIS. SPIM module can be used and in the main program 10 should be written in bits[5:4] of register SPICR. This will automatically configure the sclk P1.4 pin as an input making it a slave.