MC9S12DP512 Datasheet, PDF(55/124 Page) Freescale Semiconductor, Inc

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MC9S12DP512 Datasheet, PDF (55/124 Pages) Freescale Semiconductor, Inc – Microcontroller Unit (MCU)

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Freescale SemiconductorM,CI9nS1c2.DP512 Device Guide V01.23

Pin Name

Funct. 1

PS7

PS6

PS5

PS4

PS3

PS2

PS1

PS0

PT[7:0]

Pin Name

Funct. 2

SS0

SCK0

MOSI0

MISO0

TXD1

RXD1

TXD0

RXD0

IOC[7:0]

Pin Name Pin Name Pin Name Power

Funct. 3 Funct. 4 Funct. 5 Supply

VDDX

Internal Pull

Resistor

CTRL

Reset

State

Description

Port S I/O, SS of SPI0

Port S I/O, SCK of SPI0

Port S I/O, MOSI of SPI0

PERS/

PPSS

Port S I/O, MISO of SPI0

Port S I/O, TXD of SCI1

Port S I/O, RXD of SCI1

Port S I/O, TXD of SCI0

Port S I/O, RXD of SCI0

PERT/

PPST

Disabled Port T I/O, Timer channels

2.3 Detailed Signal Descriptions

2.3.1 EXTAL, XTAL â Oscillator Pins

EXTAL and XTAL are the crystal driver and external clock pins. On reset all the device clocks are derived

from the EXTAL input frequency. XTAL is the crystal output.

2.3.2 RESET â External Reset Pin

An active low bidirectional control signal, it acts as an input to initialize the MCU to a known start-up

state, and an output when an internal MCU function causes a reset.

2.3.3 TEST â Test Pin

This input only pin is reserved for test.

NOTE: The TEST pin must be tied to VSS in all applications.

2.3.4 VREGEN â Voltage Regulator Enable Pin

This input only pin enables or disables the on-chip voltage regulator.

For More Information On This Product,

Go to: www.freescale.com

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