MC33742EG [NXP]

MC33742EG;


型号：	MC33742EG
厂家：	NXP
描述：	MC33742EG
文件：	总4页 (文件大小：673K)
中文：	中文翻译
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Analog, Mixed Signal and Power Management

MC33742

System Basis Chip (SBC) with Enhanced High Speed CAN Transceiver

Applications

MC33742 Simplified Application Drawing

• Aircraft Systems

• Automotive Systems

• Robotic Systems

• Industrial Actuator Control

V_PWR

• Marine Applications

33742

V₂

• Automotive Electronic Control Units

including a High Speed CAN

VSUP

5.0 V

MCU

VDD

Overview

V2CTRL

The MC33742 and the 33742S are

SPI-controlled System Basis Chips

(SBCs) combining many frequently

used functions along with a CAN 2.0-

compliant transceiver, used in many

automotive electronic control units

(ECUs). The MC33742 SBC has a

fully protected fixed 5.0 V low dropout

internal regulator with current limiting,

over-temperature pre-warning, and

reset. A second 5.0 V regulator can

be implemented using external pass

PNP bipolar junction pass transistor

driven by the SBC’s external V2

sense input and V2 output drive

terminals.

RST

V_PWR

SCLK

MOSI

SCLK

MOSI

SPI

MISO

Safe Circuitry

WDOG

INT

ECU Local Supply

Twisted

TXD

RXD

CANH

CANL

CAN Bus

GND

Pair

The SBC has four main operating

modes: Normal, Standby, Stop, and

Sleep mode. Additionally, there is an

internally switched high side power

supply output, four wake-up input

terminals, a programmable window

watchdog, interrupt, reset, and a SPI

module for communication and

control. The High Speed CAN 2.0 A /B

transceiver is available for inter-

module communication.

Performance

Typical Values

Operating Voltage

Data Rate

5.5 V to 18 V

1.0 Mbps

200 mA

Internal 5.0 V Regulator

External 5.0 V Series Regulator

Supply Current with CAN Wake-up Enabled

Supply Current in Sleep Mode, CAN in Sleep State with CAN

Wake-up Enabled

Supply Current in Stop Mode, CAN in Sleep State with CAN

Wake-up Enabled

200 mA

53 + 12 = 65 µA

80 + 12 = 92 µA

Ambient Operating Temperature

-40°C ≤ T_A≤ 125°C

Features

Shut

Down

Auto

Retry

Status

Reporting

Protection

Detect

Limiting

• High Speed 1.0 Mbps CAN interface

with bus diagnostic capability

(detection of CANH and CANL short to

ground, to VDD, and to VSUP)

VDD

Under-voltage

Over-temperature

Over-current

Short-circuit

•

• Low-drop voltage 5.0 V, 200 mA VDD

Regulator with current-limiting, over-

temperature pre-warning, and output

monitoring with reset

•

• Additional 5.0 V regulator with external

series pass transistor

•

Under-voltage

• Normal, standby, stop, and sleep

modes with low sleep and stop mode

current

•

Over-temperature

Over-current

CAN Bus Fail Detection

CANH/L Short-to-Battery

• 150 mA high side switch output for

control of external circuitry

•

• Four external wake-up inputs

•

• Software programmable watchdog

window, interrupt, and reset

CANH/L Short-to-

Ground

Benefits

CANH/L Short-to-V_DD

• Standby current consumption reduced

Battery Line

• Flexible wake-up conditions and

watchdog function

•

Under-voltage

Battery Disconnect

• Innovative CAN high speed diagnostic

with failure mode sent to the MCU

through SPI interface

• Simple system design with direct

interfacing to a microprocessor

• Reduced PC board space resulting in

enhanced application reliability

• Economical solution with an optimized

performance/cost ratio

• Simplified MCU power supply design

with internal safety features and output

voltage supervisory circuits

Freescale offers a complete line of com-

patible system basis chips with trans-

ceivers

Simplified Internal Block Diagram

V2CTRL

VSUP Monitor

Dual Voltage Regulator

VSUP

5.0 V/200 mA

V1 Monitor

HS Control

Mode Control

Oscillator

INT

WDOG

RST

Interrupt

Watchdog

Reset

MOSI

SCLK

MISO

Programmable

Wake-up Input

SPI

High Speed

1.0 Mbps

CAN Physical Layer

CANH

CANL

TXD

RXD

GND

• Questions

Ordering Information

Part Number

• Q: Are you looking for a complete,

easy-to-design power supply solution

for your embedded system?

Temperature Range

-40°C to 125°C

Package

MC33742EP/R2

MCZ33742EG/R2

MCZ33742SEG/R2

Development Tools

Part Number

48 QFN (Pb-Free)

28 SOICW (Pb-Free)

• Q: Do you need an advanced

microcontroller power supply with

power sequencing and supervisory

functions?

• Q: What voltage (5.0 V or 3.3 V) does

your microcontroller need?

Description

Evaluation Kit

• Q: What type of CAN (high/low

speed) do you need?

KIT33742DWEVB

Documentation

• Q: Do you need several power

supplies?

Document Number Title

Description

• Q: Do you need a fully protected low

drop series pass regulator?

MC33742

SG1002

SG187

Data Sheet

Selector Guide

Presents the specifications for the product

Analog and power management device com-

parison

• Q: Would you like to monitor BUS

failure during a high speed CAN

communication?

Selector Guide Automotive device comparison

• Q: Do you want to reduce your

application current consumption in

standby mode?

• Q: How many wake-up inputs do you

need?

• Q: Do you need a watchdog with

independent reset/interrupt capability?

(Bottom View)

48 QFN

28 SOICW

1.27 mm Pitch

0.5 mm Pitch

18.0 mm x 7.5 mm Body

7.0 mm x 7.0 mm Body

Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc.

All other product or service names are the property of their respective owners.

Document Number: MC33742FS, Rev 5.0, 9/2010

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