Introduction
KIT33908MBEVBE Evaluation Board User’s Guide
, Rev. 1.0 3/2014
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Freescale Semiconductor, Inc.
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Introduction
The KIT33908MBEVBE evaluation mother board demonstrates the functionality of the MC33908 power system
basis chip.
This SMARTMOS IC is equipped with an Intelligent Power Management System including safety
features targeting the latest ISO26262 automotive functional safety standard. The power management and
MCU peripherals are located on the motherboard described in this user guide. The motherboard can be used
with different daughter boards. The daughter board is selected according to the preferred MCU along with its
associated circuitry. The enhanced evaluation board system includes demonstration software, which facilitates
communication between the motherboard’s power management functions and daughter board’s MCU. The
system’s advanced safety features enable it to reach the highest standard in functional safety: ASILD.
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Evaluation Board Features
•
Unique modular platform enables evaluation of different microcontrollers using the KIT33908MBEVBE and
daughter board
•
Switching mode power supply (SMPS) dedicated to MCU core supply: 1.2 V and 3.3 V, selectable through
an external voltage, selectable through external jumpers
•
Linear voltage regulator dedicated to MCU A/D reference voltage or I/Os supply (V
CCA
). 5.0 V or 3.3 V
•
Linear voltage regulator dedicated to auxiliary functions or to a sensor supply (V
CCA
tracker or independent
5.0 V/3.3 V)
•
Highly flexible SMPS pre-regulator, allowing two topologies: Non-inverting buck-boost or standard buck
•
Multiple wake-up sources in low-power mode: CAN Interface, local wake pins
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Battery voltage sensing before reverse battery protection
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Enhanced safety block associated with fail-safe outputs (two active-low signals)
•
SPI interface connectivity
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Configurable digital I/Os through SPI registers
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MUX output terminal for the device’s internal analog signal and power supply monitoring
•
SO11898 high-speed CAN interface compatibility for baud rates of 40 kB/s to 1.0 MB/s
•
High EMC immunity and ESD robustness
