mc 33905是一個2代系統(tǒng)，是基本芯片類的一個組件。該模型增加了多種功能，并設計了一些增強型塊。一般用于先進電壓管理單元的mcu和附加集成電子線路。大部分用于傳感器和可接收器上，由于mc 33905電路內(nèi)部具有增強型高速罐的接口(接口類型規(guī)范：iso 11898-2和-5)，它具有局部和總線故障診斷和保護功能。sbcs已經(jīng)包括0、1或2lin2.1接口連接到線輸出引腳開關(guān)。因為它包含超過2或3個喚醒輸入引腳，所以它確實介意被配置為輸出驅(qū)動程序，但實現(xiàn)了它的靈活使用功能。

MC33905是第二代系統(tǒng)基本芯片(SBC),包括有多中特性和增強的模塊設計,能作為MCU和其它集成電路如傳感器,CAN收發(fā)器的先進的功率管理單元. MC33905內(nèi)置了高速CAN接口(ISO11898-2 和-5),以及本地和總線故障診斷,保護以及故障安全操作模式等。

特征

MCU穩(wěn)壓器，5.0 V或者3.3 V，零件編號可選擇，能夠使用外部PNP來擴展電流功能，共同分擔功率損耗

電壓，電流和溫度保護

低功耗模式下極低的靜態(tài)電流

完全受保護的嵌入式5.0 V 穩(wěn)壓器，用于CAN驅(qū)動器

多重欠壓檢測，用來識別不同的MCU規(guī)格和系統(tǒng)運行模式(即起動)

輔助5.0 V 或者3.3 V SPI可配置穩(wěn)壓器，用于附加IC，具有過流檢測和欠壓保護功能

MUX輸出引腳，用于器件內(nèi)部模擬信號監(jiān)測和電源監(jiān)測

高級SPI，MCU，ECU電源以及關(guān)鍵引腳診斷和監(jiān)測。

低功耗模式下的多個喚醒源：CAN或LIN總線，I/O 轉(zhuǎn)換，自動定時器，SPI消息和VDD過流監(jiān)測。

兼容ISO11898-5高速CAN接口，支持40 Kb/s至1.0 Mb/s的波特率

本文介紹了MC33905主要特性,方框圖,以及簡化應用框圖和典型應用電路,

MC33905評估板EVB主要特性, 電路圖和材料清單(BOM).

The 33904/5 is the second generation family of System Basis Chips which combine several features and enhance present module designs. The device works as an advanced power management unit for the MCU and additional integrated circuits such as sensors, CAN transceivers. It has a built-in enhanced high speed CAN interface (ISO11898-2 and -5), with local and bus failure diagnostics, protection, and fail safe operation mode. The SBC may include one or two LIN 2.1 interfaces with LIN output pin switches. It includes up to 4 wake-up input pins than can also be configured as output drivers for flexibility.

This device implements multiple Low Power modes, with very low-current consumption. In addition, the device is part of a family concept where pin compatibility, among the various devices with and without LIN interfaces, add versatility to module design.

The 33904/5 also implements an innovative and advanced fail-safe state machine and concept solution.

MC33904/5主要特性:

•Protected 5.0V or 3.3V regulators for MCU (part number selectable) and additional ICs (SPI configurable) with optional external PNP usage to increase current capability for MCU.

•Fully-protected embedded 5.0 V regulator for the CAN driver

•Extremely low quiescent current in low power modes

•Multiple under-voltage detections to address various MCU specifications and system operation modes (i.e. cranking)

•Multiple wake-up sources in low power modes: CAN or LIN bus, I/O transition, automatic timer, SPI message, and VDD over-current detection.

•Voltage, current and temperature protection with enhanced diagnostics that can be monitored by system via MUX output

•ISO11898-5 high speed CAN interface compatibility for baud rates of 40 kb/s to 1.0 Mb/s. LIN 2.1 and J2602 LIN interface compatibility

•Pb-free packaging designated by suffix code EK

圖1.MC33905D內(nèi)部方框圖

圖2.MC33905S內(nèi)部方框圖

圖3.MC33904A內(nèi)部方框圖

圖4.MC33905D簡化應用方框圖

圖5.MC33905S簡化應用方框圖

圖6.MC33905A簡化應用方框圖

圖7.MC33905D典型應用電路圖

圖8.MC33905S典型應用電路圖

圖9.MC33905A典型應用電路圖

MC33905評估板EVB

This EVB includes two I/O test points that can be configured to be pulled up to VSup or pulled down to GND through a resistor and indicator LED. These are easily configured via jumper settings. The SBC can also be exercised in debug mode (watchdog re-fresh/monitoring not needed) by simply populating a jumper. Separating the input supply voltage to VSup1 and VSup2 is also made simple with a jumper configuration. Specified resistor pull-downs can be implemented on DBG and MUX pins via simple jumper configurations. The status of I/O0, I/O1, VAUX, 5V_CAN, SAFE and VDD can be visually monitored via on-board LEDs. The CAN and LIN Bus signals are provided through terminal block connectors.

An isolated terminal block connector is implemented to provide power to the evaluation board with an external DC power supply.

The evaluation board is operated through the graphical user interface paired up with the SPI dongle board (KITUSBSPIDGLEVME) through the 2x8 pin ribbon cable. Additionally, for added flexibility, the user can implement a custom board with a microcontroller to talk to the SBC via the 16 pin header.

MC33905評估板EVB主要特性:

•Nominal operating supply voltage range of 5.5V to 27V

•Individually routed power supply inputs for VSup1 and VSup2

•5.0 V regulator for MCU with external PNP ballast transistor to increase current capability.

•Multiple CAN Bus termination options supported via socket

•Two high/low side I/Os (SPI configurable) accessible through test points.

•Status of I/O0 and I/O1 indicated by LED (dependent on jumper configuration)

•Debug Mode/watchdog configuration via jumper settings

•MUX output voltage accessible through test point and external resistor selectable through jumper

•3.3 V or 5.0 V output voltage test point VAUX (SPI configurable)

•I_WAKE_I test point to enable a FET and load VDD with current to wake up the SBC.

•LIN1_T and LIN2_T test points to monitor I/O voltages (SPI configurable)

•I/O0, I/O1, VAUX, 5V_CAN, SAFE and VDD status indicated by LED

•100mil 2x8-pin standard header connector for SPI communication

•100mil 16-pin standard header connector for custom MCU board connection

圖10.MC33905評估板KIT33905D5EKEVBE外形圖

圖11.評估板KIT33905D5EKEVBE建立配置方框圖

圖12.評估板KIT33905D5EKEVBE電路圖

評估板KIT33905D5EKEVBE材料清單(BOM):

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