MC9S12UF32 Datasheet, PDF (113/128 Pages) Freescale Semiconductor, Inc – System on a Chip Guide V01.05

A.3 Voltage Regulator
System on a Chip Guide — 9S12UF32DGV1/D V01.05
The on-chip voltage regulator is intended to supply the internal logic, oscillator circuits, and the USB
PHY. No external DC load is allowed.
Table A-11 Voltage Regulator Recommended Load Resistances/Capacitances
Rating
Load Capacitance between VDDA and VSSA1
RPU resistor between VDDA and RPU
RREF resistor between RREF and VSSA1
Symbol
C_LVDDA
R_RPU
R_RREF
Min Typ Max Unit
100
nF
1425
1575 ohm
504.9
515.1 ohm
Freescale Semiconductor
113