Datasheet > MCZ33789AE

MCZ33789AE

更新时间： 2024-11-22 15:19:35

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
87页	6432K
描述
System Basis Chip, Boost, Buck, Airbag, Transceiver, PSI5, Sense & Trigger logic, LQFP64ep

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MCZ33789AE 数据手册

Document Number: MC33789

Rev. 4.0, 9/2014

Freescale Semiconductor

Advance Information

Airbag System Basis Chip (SBC) with

Power Supply and PSI5 Sensor

Interface

33789

AUTO RESTRAINT

The 33789, a SafeAssure SMARTMOS solution, is a mixed signal IC for

airbag safety applications. The 33789 provides a cost effective and flexible

system IC solution across the range of airbag partitions used in cars and other

vehicles.

The 33789 connects to the 12 V vehicle battery and supplies the multiple

voltages of a typical airbag system. The 33789 can detect switched input states,

communicate with both local and remote crash sensors. It offers an industry

standard interface (SPI) and four PSI5 master interfaces. The 33789 has a

dedicated safing state machine that complements the airbag’s MCU hardware/

software safing approach. Also included are a diagnostic - self protection

capability and a programmable analog interface accessible by the system MCU.

AE SUFFIX (PB-FREE)

EXPOSED PAD

98ASA10763D

64-PIN LQFP

The 33789 is well suited for use in low to high end airbag systems by allowing

the designer to scale a design for the number of firing loops needed while

providing enhanced safety and system reliability.

Applications

Features

• Airbag safety

• Designed to operate 5.2 V  V_PWR 20 V, up to a 40 V transient

• Safing state machine with programmable sensing thresholds

• Two configurable high-side/low-side drivers with PWM capability

• Four PSI5 satellite sensor master interfaces

• Self-protected and diagnostic capability

• Watchdog and system Power ON Reset (POR)

• Supports complete airbag system power supply architecture, including

system power mode control, supplies for squib firing (33 V), satellite sensors

(6.3 V), and local ECU sensors and ECU logic circuits (5.0 V)

• Nine configurable switch input monitors for simple switch and Hall- effect

sensor interfaces with internal power supply

• 16-bit SPI interface

• LIN 2.1 physical layer interface

33789

Wake Up

V_BAT

IN1

IN2

WAKE

VPWR

V_BAT

9 Input

Monitors

IN8

IN9

LIN

BSTSW

33 V

VBST

VER

PSI5_1

PSI5_2

PSI5_3

PSI5_4

4 Satellite

Sensor

Interfaces

5.0 V

Energy

Storage

ERSW

5.0 V

VFIRE_x

SQB_H1

V_PWR

OUT1_D

OUT1_S

SQB_H1

BUCKSW

VBUCK

9.0 V

5.0 V

Output

Squib

Driver 1

5.0 V

Squib

Driver 2

VCCDRI

VCC

Sensor SPI

X/Y Axis

Accel.

Sensor

SPI

SQB_L1

5.0 V

VDD

SQB_L1

SPI_A

AIN

AOUT

Cross-coupled

Squib

Connections

ARM

FEN_1

FEN_2

RESET

SPI_B

RESET

SPI

Squib Driver SPI

ARM_X and ARM_Y for Squib Driver 2 FENs

MCU

Figure 1. 33789 Simplified Application Diagram

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

12 3 4 5 6 7...87

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MCZ33789AE 替代型号

型号	品牌	替代类型	描述	数据表
MCZ33789BAE	NXP	完全替代	System Basis Chip, Boost, Buck, Airbag, Transceiver, PSI5, Sense & Trigger logic, LQFP64ep

与MCZ33789AE相关器件

型号	品牌	获取价格	描述	数据表
MCZ33789AE/R2	FREESCALE	获取价格	Airbag System Basis Chip (SBC) with Power Supply and PSI5 Sensor Interface
MCZ33789BAE	NXP	获取价格	System Basis Chip, Boost, Buck, Airbag, Transceiver, PSI5, Sense & Trigger logic, LQFP64ep
MCZ33790EG	FREESCALE	获取价格	Two-Channel Distributed System Interface (DSI) Physical Interface Device
MCZ33790EGR2	FREESCALE	获取价格	Two-Channel Distributed System Interface (DSI) Physical Interface Device
MCZ33793AEF	FREESCALE	获取价格	Distributed System Interface (DSI) Sensor Interface
MCZ33793AEF	NXP	获取价格	Sensor interface, DSI, Quad, 8 bit ADC, 5V Vreg, SOIC16, Rail
MCZ33793AEFR2	FREESCALE	获取价格	Distributed System Interface (DSI) Sensor Interface
MCZ33793AEFR2	NXP	获取价格	Sensor interface, DSI, Quad, 8 bit ADC, 5V Vreg, SOIC16, Reel
MCZ33793EF	NXP	获取价格	SPECIALTY ANALOG CIRCUIT, PDSO16, 1.27 MM PITCH, ROHS COMPLIANT, PLASTIC, MS-012AC SOIC-16
MCZ33793EF	ROCHESTER	获取价格	SPECIALTY ANALOG CIRCUIT, PDSO16, 1.27 MM PITCH, LEAD FREE, PLASTIC, MS-012AC SOIC-16

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