mfr4300 Freescale Semiconductor, Inc, mfr4300 Datasheet - Page 238
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mfr4300
Manufacturer Part Number
mfr4300
Description
Flexray Communication Controllers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MFR4300.pdf
(266 pages)
- Current page: 238 of 266
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Electrical Characteristics
A.1.2
The MFR4300 uses several pins to supply power to the I/O pins, oscillator and the digital core.
The VDDA, VSSA pair supplies the internal voltage regulator.
The VDDX, VSSX, VDDR and VSSR pairs supply the I/O pins, VDDR supplies also the internal voltage
regulator.
VDD2_5 and VSS2_5 are the supply pins for the digital logic, VDDOSC, VSSOSC supply the oscillator.
VDDA, VDDX, VDDR as well as VSSA, VSSX, VSSR are connected by anti-parallel diodes for ESD
protection.
A.1.3
There are four groups of functional pins.
A.1.3.1
Those I/O pins have a nominal level of 3.3V. This class of pins is comprised of all I/O pins (all MFR4300
pins excluding EXTAL, XTAL and all power supply pins).The internal structure of all those pins is
identical, however some of the functionality may be disabled. E.g. for the input-only pins the output
drivers are disabled permanently.
A.1.3.2
The pins EXTAL, XTAL dedicated to the oscillator have a nominal 2.5V level. They are supplied by
VDDOSC.
A.1.3.3
This pin is used to enable the on chip voltage regulator.
238
Power Supply
Pins
3.3V I/O pins
Oscillator
VDDR
In the following context, VDD5 is used for either VDDA, VDDR and
VDDX; VSS5 is used for either VSSA, VSSR and VSSX unless otherwise
noted.
IDD5 denotes the sum of the currents flowing into the VDDA, VDDX and
VDDR pins.
VDD is used for VDD2_5 and VDDOSC, VSS is used for VSS2_5 and
VSSOSC.
IDD is used for the current flowing into VDD2_5.
MFR4300 Data Sheet, Rev. 3
NOTE
Freescale Semiconductor
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