S912XET512J3VALR Freescale Semiconductor, S912XET512J3VALR Datasheet - Page 1263

• Manufacturer Part Number: S912XET512J3VALR
• Description: 16-bit Microcontrollers - MCU 16 BIT,512K FLASH
• Manufacturer: Freescale Semiconductor

Specifications of S912XET512J3VALR

• Rohs: yes
• Core: HCS12X
• Processor Series: MC9S12XE
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 512 KB
• Data Ram Size: 32 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3.13 V to 5.5 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-112
• Mounting Style: SMD/SMT

Appendix C
PCB Layout Guidelines
The PCB must be carefully laid out to ensure proper operation of the voltage regulator as well as of the
MCU itself. The following rules must be observed:
Example layouts are illustrated on the following pages.
Freescale Semiconductor
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Every supply pair must be decoupled by a ceramic capacitor connected as near as possible to the
corresponding pins .
Central point of the ground star should be the VSS3 pin.
Use low ohmic low inductance connections between VSS1, VSS2 and VSS3.
VSSPLL must be directly connected to VSS3.
Keep traces of VSSPLL, EXTAL, and XTAL as short as possible and occupied board area for C7,
C8, and Q1 as small as possible.
Do not place other signals or supplies underneath area occupied by C7, C8, and Q1 and the
connection area to the MCU.
Central power input should be fed in at the VDDA/VSSA pins.
MC9S12XE-Family Reference Manual Rev. 1.25
Appendix C PCB Layout Guidelines
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