HCS12 datasheet(71/126 Pages) NXP

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HCS12 Datasheet(PDF) 71 Page - NXP Semiconductors

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Device User Guide — 9S12KT256DGV1/D V01.09

Freescale Semiconductor

Section 3 System Clock Description

The Clock and Reset Generator provides the internal clock signals for the core and all peripheral modules.

Figure 3-1 shows the clock connections from the CRG to all modules. Consult the CRG Block Guide for

details on clock generation.

Figure 3-1 Clock Connections

CRG

Bus Clock

Core Clock

EXTAL

XTAL

Oscillator Clock

HCS12 CORE

Flash

BDM

OSC

CPU

MEBI

MMC

INT

DBG

IIC

RAM

SCI0, SCI1

PWM

ATD

EEPROM

TIM

SPI0, SPI1, SPI2

CAN0, CAN1, CAN4

PIM

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