SC312XDP512F0MPVR datasheet(65/1350 Pages) FREESCALE

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Chapter 1 Device Overview MC9S12XD-Family

MC9S12XDP512 Data Sheet, Rev. 2.17

Freescale Semiconductor

1.2.3.62

PS5 / MOSI0 — Port S I/O Pin 5

PS5 is a general-purpose input or output pin. It can be conﬁgured as master output (during master mode)

or slave input pin (during slave mode) MOSI of the serial peripheral interface 0 (SPI0).

1.2.3.63

PS4 / MISO0 — Port S I/O Pin 4

PS4 is a general-purpose input or output pin. It can be conﬁgured as master input (during master mode) or

slave output pin (during slave mode) MOSI of the serial peripheral interface 0 (SPI0).

1.2.3.64

PS3 / TXD1 — Port S I/O Pin 3

PS3 is a general-purpose input or output pin. It can be conﬁgured as the transmit pin TXD of serial

communication interface 1 (SCI1).

1.2.3.65

PS2 / RXD1 — Port S I/O Pin 2

PS2 is a general-purpose input or output pin. It can be conﬁgured as the receive pin RXD of serial

communication interface 1 (SCI1).

1.2.3.66

PS1 / TXD0 — Port S I/O Pin 1

PS1 is a general-purpose input or output pin. It can be conﬁgured as the transmit pin TXD of serial

communication interface 0 (SCI0).

1.2.3.67

PS0 / RXD0 — Port S I/O Pin 0

PS0 is a general-purpose input or output pin. It can be conﬁgured as the receive pin RXD of serial

communication interface 0 (SCI0).

1.2.3.68

PT[7:0] / IOC[7:0] — Port T I/O Pins [7:0]

PT[7:0] are general-purpose input or output pins. They can be conﬁgured as input capture or output

compare pins IOC[7:0] of the enhanced capture timer (ECT).

1.2.4

Power Supply Pins

MC9S12XDP512 power and ground pins are described below.

NOTE

All VSS pins must be connected together in the application.

1.2.4.1

VDDX1, VDDX2, VSSX1,VSSX2 — Power and Ground Pins for I/O Drivers

External power and ground for I/O drivers. Because fast signal transitions place high, short-duration

current demands on the power supply, use bypass capacitors with high-frequency characteristics and place

them as close to the MCU as possible. Bypass requirements depend on how heavily the MCU pins are

loaded.

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