Chapter 23 Voltage Regulator (S12VREGL3V3V1)
MC9S12XE-Family Reference Manual Rev. 1.19
Freescale Semiconductor
817
Figure 23-1. VREG_3V3 Block Diagram
LVR
LVD
POR
VDDR
VDD
LVI
POR
LVR
CTRL
VSS
VDDPLL
VSSPLL
VREGEN
REG
PIN
VDDA
REG: Regulator Core
CTRL: Regulator Control
LVD: Low Voltage Detect
LVR: Low Voltage Reset
POR: Power-on Reset
HTD: High Temperature Detect
C
HTI
HTD
API
API
API: Auto. Periodical Interrupt
V
BG
API
Rate
Select
Bus Clock
REG2
REG1
REG3
VDDF
VSSA
VDDX
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages