DEMO9S12XEP100 Freescale Semiconductor, DEMO9S12XEP100 Datasheet - Page 502

• Manufacturer Part Number: DEMO9S12XEP100
• Description: BOARD DEMO FOR MC9S12XEP100
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of DEMO9S12XEP100

• Contents: Board, Cables, CD
• Processor To Be Evaluated: MC9S12XEP100
• Data Bus Width: 16 bit
• Interface Type: RS-232
• Silicon Manufacturer: Freescale
• Core Architecture: S12
• Core Sub-architecture: S12
• Silicon Core Number: MC9S12
• Silicon Family Name: S12XE
• Rohs Compliant: Yes
• For Use With/related Products: MC9S12XEP100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Chapter 12 Pierce Oscillator (S12XOSCLCPV2)
12.1.3
Figure 12-1
12.2
This section lists and describes the signals that connect off chip
12.2.1
Theses pins provides operating voltage (V
allows the supply voltage to the XOSC to use an independent bypass capacitor.
12.2.2
These pins provide the interface for either a crystal or a 1.8V CMOS compatible clock to control the
internal clock generator circuitry. EXTAL is the external clock input or the input to the crystal oscillator
amplifier. XTAL is the output of the crystal oscillator amplifier. The MCU internal system clock is derived
502
Because of an order from the United States International Trade Commission, BGA-packaged product lines and partnumbers
indicated here currently are not available from Freescale for import or sale in the United States prior to September 2010
External Signal Description
Block Diagram
VDDPLL and VSSPLL — Operating and Ground Voltage Pins
EXTAL and XTAL — Input and Output Pins
shows a block diagram of the XOSC.
Detector
Peak
EXTAL
MC9S12XE-Family Reference Manual , Rev. 1.23
Figure 12-1. XOSC Block Diagram
Gain Control
DDPLL
Monitor
Clock
) and ground (V
Rf
V
DDPLL
Monitor_Failure
= 1.8 V
OSCCLK
SSPLL
XTAL
) for the XOSC circuitry. This
Freescale Semiconductor