
Chapter 1 Device Overview MC9S12XE-Family
MC9S12XE-Family Reference Manual Rev. 1.21
Freescale Semiconductor
65
Because of an order from the United States International Trade Commission, BGA-packaged product lines and partnumbers
indicated here currently are not available from Freescale for import or sale in the United States prior to September 2010
interrupt is level sensitive and active low. As XIRQ is level sensitive, while this pin is low the MCU will
not enter STOP mode.
1.2.3.20
PF7 / TXD3 — Port F I/O Pin 7
PF7 is a general-purpose input or output pin. It can be congured as the transmit pin TXD of serial
communication interface 3 (SCI3).
1.2.3.21
PF6 / RXD3 — Port F I/O Pin 6
PF6 is a general-purpose input or output pin. It can be congured as the transmit pin RXD of serial
communication interface 3 (SCI3).
1.2.3.22
PF5 / SCL0 — Port F I/O Pin 5
PF5 is a general-purpose input or output pin. It can be congured as the serial clock pin SCL of the IIC0
module.
1.2.3.23
PF4 / SDA0 — Port F I/O Pin 4
PF4 is a general-purpose input or output pin. It can be congured as the serial data pin SDA of the IIC0
module.
1.2.3.24
PF[3:0] / CS[3:0] — Port F I/O Pins 3 to 0
PF[3:0] are a general-purpose input or output pins. They can be congured as chip select outputs [3:0].
1.2.3.25
PH7 / KWH7 / SS2 / TXD5 — Port H I/O Pin 7
PH7 is a general-purpose input or output pin. It can be congured as a keypad wakeup input. It can be
congured as slave select pin SS of the serial peripheral interface 2 (SPI2). It can be congured as the
transmit pin TXD of serial communication interface 5 (SCI5).
1.2.3.26
PH6 / KWH6 / SCK2 / RXD5 — Port H I/O Pin 6
PH6 is a general-purpose input or output pin. It can be congured as a keypad wakeup input. It can be
congured as serial clock pin SCK of the serial peripheral interface 2 (SPI2). It can be congured as the
receive pin (RXD) of serial communication interface 5 (SCI5).
1.2.3.27
PH5 / KWH5 / MOSI2 / TXD4 — Port H I/O Pin 5
PH5 is a general-purpose input or output pin. It can be congured as a keypad wakeup input. It can be
congured as master output (during master mode) or slave input pin (during slave mode) MOSI of the
serial peripheral interface 2 (SPI2). It can be congured as the transmit pin TXD of serial communication
interface 4 (SCI4).