Port Integration Module (S12XHYPIMV1)
MC9S12XHY-Family Reference Manual, Rev. 1.01
Freescale Semiconductor
117
Table 2-39. PTH Register Field Descriptions
Field
Description
7-4
PTH
Port H general purpose input/output data—Data Register, LCD segment driver output
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
• The LCD segment driver output function takes precedence over the general purpose I/O function if enabled
3
PTH
Port H general purpose input/output data—Data Register, LCD segment driver output, SS of SPI
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
• The LCD segment driver output takes precedence over the SPI, IIC and the general purpose I/O function
• The SS of SPI takes precedence over the general purpose I/O function
2
PTH
Port H general purpose input/output data—Data Register, LCD segment driver output, SCK of SPI, ECLK
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
• The LCD segment driver output takes precedence over the SPI, ECLK and the general purpose I/O function
• The SCK of SPI takes precedence over the ECLK and the general purpose I/O function
• The ECLK takes precedence over the general purpose I/O function
1
PTH
Port H general purpose input/output data—Data Register, LCD segment driver output, MOSI of SPI,TXD of SCI1
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
• The LCD segment driver output takes precedence over the SCI,SPI and the general purpose I/O function
• The TXD of SCI1 takes precedence over the SPI and the general purpose I/O function
• The MOSI of SPI takes precedence over the general purpose I/O function
0
PTH
Port H general purpose input/output data—Data Register, LCD segment driver output, MISO of SPI, SCL of IIC
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
• The LCD segment driver output takes precedence over the SPI, SCI and the general purpose I/O function
• The RXD of SCI1 takes precedence over the SPI and the general purpose I/O function
• The MISO of SPI takes precedence over the general purpose I/O function
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