mc9s12uf32 Freescale Semiconductor, Inc, mc9s12uf32 Datasheet - Page 75

• Manufacturer Part Number: mc9s12uf32
• Description: System Chip Guide V01.05
• Manufacturer: Freescale Semiconductor, Inc

2.6.2 VDD - Core Power Pin
This 2.5v supply is derived from the internal voltage regulator. There is no static load on this pin allowed.
The internal voltage regulator is turned off if VREGEN is tied to ground. In that case, VDD must be
supplied externally with 2.5v.
2.6.3 VDDX, VSSX - Power & Ground Pins for I/O Drivers
External power and ground for I/O drivers of Ports B, A, U, S and R.
2.6.4 VDD3X, VSS3X - Power & Ground Pins for I/O Drivers
External power and ground for I/O drivers of Ports Q, P, M, J and T.
2.6.5 VDDA, VSSA, VSSA1 - USB PHY Power Pins
VDDA is 3.3v output for connecting USB pull-up resistor (RPU).
VSSA and VSSA1 are ground of USB PHY, which generates the 480bps USB signals. VSSA should also
be used for ground of Pierce oscillator crystal.
Freescale Semiconductor
NOTE:
NOTE:
No load allowed except for bypass capacitors.
No load allowed except for bypass capacitors and RPU.
System on a Chip Guide — 9S12UF32DGV1/D V01.05
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