MC9S12DJ64 Datasheet, PDF (62/126 Pages) Motorola, Inc – MC9S12DJ64 Device User Guide V01.17

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
Pin Number
Mnemonic
112-pin QFP
Nominal
Voltage
Description
VDD1, 2
VSS1, 2
13, 65
14, 66
2.5V
0V
Internal power and ground generated by internal regulator
VDDR
41
VSSR
40
5.0V
0V
External power and ground, supply to pin drivers and internal
voltage regulator.
VDDX
107
VSSX
106
5.0V
0V
External power and ground, supply to pin drivers.
VDDA
83
VSSA
86
5.0V
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.
VRL
85
0V
Reference voltages for the analog-to-digital converter.
VRH
84
5.0V
62