I am trying to implement Smart Card Reader( MFRC523 Reader) using Controller LPC2138 interface.
Link for datasheet: http://www.nxp.com/documents/data_sheet/MFRC523.pdf
I have interfaced MFRC523 smart card reader to LPC2138 using I2C protocol. For I2C interface, IC datasheet suggests NRSTPD pin to controller interface.
But due to shortage of I/O pin ( all I/Os used for other application ), I have hardwired NRSTPD pin to Logic High state.
As per datasheet,
NRSTPD ( Input ): ( reset and power-down input ) reset: enabled by a positive edge power-down: enabled when LOW; internal current sinks are switched off, the oscillator is inhibited and the input pins are disconnected from the outside world
So Can I hardwired NRSTPD pin to Logic High.
Please guide and thanks in advance.