User's Manual

WM_PRJ_Q2400_PTS_002 - 004
March 5, 2004
2.4 LCD interface
The WISMO Quik Q24x6 sub-series can be connected to a LCD module driver through either a SPI
bus or a two-wire interface.
2.4.1 SPI bus
The SPI bus includes a CLK signal (SPI_CLK), an I/O signal (SPI_IO) and an EN signal (SPI_EN)
complying with SPI bus standard.
Pin description
Signal Pin number I/O I/O type Description
SPI_CLK 10 O 1X SPI Serial Clock
SPI_IO 8 I/O CMOS / 1X SPI Data
SPI_EN * 28 O 1X SPI Enable
* Multiplexed with GPO3.
2.4.2 Two-wire interface
A
A
A
T
T
T
The two-wire interface includes a CLK signal (SCL) and a DATA signal (SDA) complying with a
standard 96 kHz interface. The maximum speed transfer is 400 kbits/s.
Pin description
Signal Pin number I/O I/O type Description
SCL 10 O 1X Serial Clock
SDA 8 I/O CMOS / 1X Serial Data
2.5 SPI Auxiliary bus
A second SPI Chip Enable (called SPI_AUX) has to be used to add a SPI peripheral to the WISMO
Quik Q24x6 sub-series.
Pin description
Signal Pin number I/O I/O type Description
SPI_CLK 10 O 1X SPI Serial Clock
SPI_IO 8 I/O CMOS / 1X SPI Data
SPI_AUX * 26 O 1X SPI Aux. Enable
* Multiplexed with GPO0.
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