mm912f634 Freescale Semiconductor, Inc, mm912f634 Datasheet - Page 60
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mm912f634
Manufacturer Part Number
mm912f634
Description
Mm912f634 - Integrated S12 Based Relay Driver With Lin
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MM912F634.pdf
(335 pages)
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Functional Description and Application Information
4.4.1
To supply the MCU die and minor additional loads two cascaded voltage regulators have been implemented, VDDX (5.0 V) and
VDD (2.5 V). External capacitors (C
4.4.2
To guarantee safe power up and down behavior, special dependencies are implemented to prevent unwanted MCU execution.
Figure 18
Freescale Semiconductor
shows a standard power up and power down sequence.
Voltage Regulators VDD (2.5 V) & VDDX (5.0 V)
Power Up Behavior / Power Down Behavior
ADC2p5
HSUP
C
C
HSUP
ADC
VDD
HS1
HS2
) and (C
Figure 17. MM912F634 Power Supply
VDDX
HSUP (18V)
HS1 & HS2
Reference
Regulator
ADC 2.5V
VROV
) are required for proper regulation.
VDDX
VDD
INTERNAL
INTERNAL
HVI
VDD (2.5V)
LVI
VDDX (5V)
Regulator
Regulator
bg1p25sleep
ADC
÷
LVRX
LVR
LBI
C
C
VDDX
VDD
VDDX
VDD
Power Supply
MM912F634
60
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