S12SCIV2SLASHD datasheet(65/130 Pages) FREESCALE

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MC9S12H256 Device User Guide — V01.18

2.3.38 PS1 / TXD0 — Port S I/O Pin 1

PS1 is a general purpose input or output pin. It can be configured as transmit pin TXD0 of the Serial

Communication Interface 0 (SCI0).

2.3.39 PS0 / RXD0 — Port S I/O Pin 0

PS0 is a general purpose input or output pin. It can be configured as receive pin RXD0 of the Serial

Communication Interface 0 (SCI0).

2.3.40 PT[7:4] / IOC[7:4] — Port T I/O Pins [7:4]

PT7-PT4 are general purpose input or output pins. They can be configured as input capture or output

compare pins IOC7-IOC4 of the Timer (TIM).

2.3.41 PT[3:0] / IOC[3:0] / FP[27:24] — Port T I/O Pins [3:0]

PT3-PT0 are general purpose input or output pins. They can be configured as input capture or output

compare pins IOC3-IOC0 of the Timer (TIM). They can be configured as frontplane segment driver

outputs FP27-FP24 of the LCD module.

2.3.42 PU[7:4] / M1C1P, M1C1M, M1C0P, M1C0M — Port U I/O Pins [7:4]

PU7-PU4 are general purpose input or output pins. They can be configured as high current PWM output

pins which can be used for motor drive. These pins interface to the coils of motor 1. PWM output on

M1C0M results in a positive current flow through coil 0 when M1C0P is driven to a logic high state. PWM

output on M1C1M results in a positive current flow through coil 1 when M1C1P is driven to a logic high

state.

2.3.43 PU[3:0] / M0C1P, M0C1M, M0C0P, M0C0M — Port U I/O Pins [3:0]

PU3-PU0 are general purpose input or output pins. They can be configured as high current PWM output

pins which can be used for motor drive. These pins interface to the coils of motor 0. PWM output on

M0C0M results in a positive current flow through coil 0 when M0C0P is driven to a logic high state. PWM

output on M0C1M results in a positive current flow through coil 1 when M0C1P is driven to a logic high

state.

2.3.44 PV[7:4] / M3C1P, M3C1M, M3C0P, M3C0M — Port V I/O Pins [7:4]

PV7-PV4 are general purpose input or output pins. They can be configured as high current PWM output

pins which can be used for motor drive. These pins interface to the coils of motor 3. PWM output on

M3C0M results in a positive current flow through coil 0 when M3C0P is driven to a logic high state. PWM

output on M3C1M results in a positive current flow through coil 1 when M3C1P is driven to a logic high

state.

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