Datasheet

Chapter 1 Device Overview MC9S12XE-Family

MC9S12XE-Family Reference Manual Rev. 1.25

Freescale Semiconductor 65

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 conﬁgured 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 conﬁgured 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 conﬁgured 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 conﬁgured 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 conﬁgured 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 conﬁgured as a keypad wakeup input. It can be

conﬁgured as slave select pin

SS of the serial peripheral interface 2 (SPI2). It can be conﬁgured 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 conﬁgured as a keypad wakeup input. It can be

conﬁgured as serial clock pin SCK of the serial peripheral interface 2 (SPI2). It can be conﬁgured 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 conﬁgured as a keypad wakeup input. It can be

conﬁgured as master output (during master mode) or slave input pin (during slave mode) MOSI of the

serial peripheral interface 2 (SPI2). It can be conﬁgured as the transmit pin TXD of serial communication

interface 4 (SCI4).