S12SPIV2D datasheet(62/126 Pages) FREESCALE

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MC9S12DJ64 Device User Guide — V01.17

2.3.55 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).

2.3.56 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).

2.3.57 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).

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

PT7-PT0 are general purpose input or output pins. They can be configured as input capture or output

compare pins IOC7-IOC0 of the Enhanced Capture Timer (ECT).

2.4 Power Supply Pins

MC9S12DJ64 power and ground pins are described below.

NOTE:

All VSS pins must be connected together in the application.

Table 2-2 MC9S12DJ64 Power and Ground Connection Summary

Mnemonic

Pin Number

Nominal

Voltage

Description

112-pin QFP

VDD1, 2

13, 65

2.5V

Internal power and ground generated by internal regulator

VSS1, 2

14, 66

VDDR

5.0V

External power and ground, supply to pin drivers and internal

voltage regulator.

VSSR

VDDX

107

5.0V

External power and ground, supply to pin drivers.

VSSX

106

VDDA

5.0V

Operating voltage and ground for the analog-to-digital

converters and the reference for the internal voltage regulator,

allows the supply voltage to the A/D to be bypassed

independently.

VSSA

VRL

Reference voltages for the analog-to-digital converter.

VRH

5.0V

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