Datasheet

Port Integration Module (S12GPIMV1)

MC9S12G Family Reference Manual, Rev.1.23

176 Freescale Semiconductor

PS4 • The SPI0 MISO signal is mapped to this pin when used with the SPI function. Depending on the

conﬁguration of the enabled SPI0 the I/O state is forced to be input or output.

• 20 TSSOP: The SCI0 RXD signal is mapped to this pin when used with the SCI function. If the SCI0

RXD signal is enabled and routed here the I/O state will be forced to input.

• 20 TSSOP: The PWM channel 2 signal is mapped to this pin when used with the PWM function. If the

PWM channel is enabled and routed here the I/O state is forced to output.

• 32 LQFP: The PWM channel 4 signal is mapped to this pin when used with the PWM function. The

enabled PWM channel forces the I/O state to be an output.

• 20 TSSOP: The ADC ETRIG2 signal is mapped to this pin if PWM channel 2 is routed here. The

enabled external trigger function has no effect on the I/O state. Refer to Section 2.6.4, “ADC External

Triggers ETRIG3-0”.

• Signal priority:

20 TSSOP: MISO0 > RXD0 > PWM2 > GPO

32 LQFP: MISO0 > PWM4 > GPO

Others: MISO0 > GPO

PS3 • Except 20 TSSOP and 32 LQFP: The SCI1 TXD signal is mapped to this pin when used with the SCI

function. If the SCI1 TXD signal is enabled the I/O state will depend on the SCI1 conﬁguration.

• Signal priority:

48/64/100 LQFP: TXD1 > GPO

PS2 • Except 20 TSSOP and 32 LQFP: The SCI1 RXD signal is mapped to this pin when used with the SCI

function. If the SCI1 RXD signal is enabled the I/O state will be forced to be input.

• Signal priority:

20 TSSOP and 32 LQFP: GPO

Others: RXD1 > GPO

PS1 • Except 20 TSSOP: The SCI0 TXD signal is mapped to this pin when used with the SCI function. If the

SCI0 TXD signal is enabled the I/O state will depend on the SCI0 conﬁguration.

• Signal priority:

Except 20 TSSOP: TXD0 > GPO

PS0 • Except 20 TSSOP: The SCI0 RXD signal is mapped to this pin when used with the SCI function. If the

SCI0 RXD signal is enabled the I/O state will be forced to be input.

• Signal priority:

20 TSSOP: GPO

Others: RXD0 > GPO

Table 2-12. Port S Pins PS7-0 (continued)