MC9S12HY64 Datasheet, PDF (97/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

2 _{Special priority for SPI & IIC}
Port Integration Module (S12HYPIMV1)
Field
7-4
PTH
3
PTH
2
PTH
1
PTH
0
PTH
Table 2-36. PTH Register Field Descriptions
Description
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
Port H general purpose input/output data—Data Register, LCD segment driver output, SS of SPI, SDA 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, IIC and the general purpose I/O function
• The SDA of IIC takes precedence over the SPI and the general purpose I/O function
• The SS of SPI takes precedence over the general purpose I/O function
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
Port H general purpose input/output data—Data Register, LCD segment driver output, MOSI 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 and the general purpose I/O function
• The MOSI of SPI takes precedence over the general purpose I/O function
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, IIC and the general purpose I/O function
• The SCL of IIC 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
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
97