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AS8530: 产品描述LIN Transceiver with Integrated Voltage Regulator and MCU Interface for Automotive Applications; 文件大小656KB，共29页; 制造商AMS; 官网地址https://ams.com/zh

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AS8530概述

LIN Transceiver with Integrated Voltage Regulator and MCU Interface for Automotive Applications

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Preliminary Data Sheet

AS8530

LIN Tr a ns ce i ve r w it h I nt eg ra t e d Volt a ge Re gul at or a nd

MCU Interface for Automotive Applications

1 General Description

The AS8530 is a general purpose companion IC for sensor and

actuator LIN slaves offering LIN transceiver and low drop voltage

regulator.

As well it provides a 2-wire microcontroller interface through shared

EN and TX pins to access a window watchdog with RC oscillator,

control registers, backup registers and monitoring information.

The IC is fabricated in a high voltage CMOS technology which is

able to withstand voltages up to 50V.

The product is available in SOIC package with exposed pad.

Under voltage reset with factory options

LIN bus transceiver with load independent slew control

conforming to LIN 2.1 and SAE J2602, short circuit protection,

TX time out fail safe feature, over temperature warning and shut

down

6kV ESD on LIN pin according to IEC 61000-4-2

Window watchdog if factory enabled.

Micro controller 2-wire interface through shared pins for watch-

dog trigger, monitoring, register read /write

Chip ID for traceability and module ID

8 Backup registers to store data during VCC shut down

8 pin epSOIC package

-40ºC to +125ºC ambient operating temperature

2 Key Features

Operating voltage 6 to 18V, max 42V for 500ms

Linear, low-drop voltage regulator: VCC = 5V±3% or 3.3V as a

factory programming option

50mA load current

Operating modes: Normal and Standby or Normal and Sleep as

a factory option

Typically 40µA quiescent current in standby mode, Typically

30µA quiescent current in sleep mode

Figure 1. AS8530 LIN Transceiver Block Diagram

3 Applications

The AS8530 is a System Basis Chip for automotive LIN networked

sensor or actuator slaves.

VSUP

LDO

VCC

POR-VSUP

Temperature

Limiter

TSHD

AS8530

Control

Signals

WWD Output

POR-VCC

RESET_VSUP_N

Mode

Control

RESET_VCC_N

Reset

Block

VCC

RESET

RESET_VSUP_N

2 wire inter-

face

Window

Watchdog

(WWD)

BUS

VSUP

LIN Wakeup

Receiver

30k

VCC

Transmitter

15k

Slew

Control

GND

LIN Transceiver

www.austriamicrosystems.com/Lin_CompanionIC/AS8530

Revision 0.01

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AS8530

Preliminary Data Sheet - C o n t e n t s

Contents

1 General Description.................................................................................................................................................................... 1

2 Key Features ............................................................................................................................................................................... 1

3 Applications ................................................................................................................................................................................ 1

4 Pin Assignments......................................................................................................................................................................... 4

4.1 Pin Descriptions........................................................................................................................................................................................ 4

5 Absolute Maximum Ratings....................................................................................................................................................... 5

6 Electrical Characteristics........................................................................................................................................................... 6

6.1 Detailed System and Block Specifications ............................................................................................................................................... 6

6.1.1 Low Dropout Regulator................................................................................................................................................................. 7

6.1.2 LIN Transceiver ............................................................................................................................................................................ 7

6.1.3 V

Undervoltage Reset and Window Watchdog........................................................................................................................ 9

7 Detailed Description ................................................................................................................................................................. 12

7.1 Block Description.................................................................................................................................................................................... 12

7.1.1

7.1.2

7.1.3

7.1.4

7.1.5

7.1.6

7.1.7

7.2.1

7.2.2

7.2.3

7.2.4

7.2.5

Voltage Regulator (LDO) ............................................................................................................................................................ 12

Temperature Limiter ................................................................................................................................................................... 12

VSUP Undervoltage Reset ......................................................................................................................................................... 12

RESET........................................................................................................................................................................................ 12

Undervoltage Reset............................................................................................................................................................ 13

Window Watchdog (WWD) ......................................................................................................................................................... 13

LIN Transceiver .......................................................................................................................................................................... 14

Normal Mode .............................................................................................................................................................................. 14

Standby Mode............................................................................................................................................................................. 14

Sleep Mode................................................................................................................................................................................. 14

Temporary Shutdown Mode ....................................................................................................................................................... 14

Thermal Shutdown State ............................................................................................................................................................ 15

7.2 Operating Modes and States.................................................................................................................................................................. 14

7.3 State Diagram......................................................................................................................................................................................... 16

8 Application Information............................................................................................................................................................ 17

8.1 Initialization............................................................................................................................................................................................. 17

8.2 Wake-Up................................................................................................................................................................................................. 18

8.3 Over-Temperature Shutdown ................................................................................................................................................................. 18

8.4 LIN BUS Transceiver .............................................................................................................................................................................. 18

8.4.1 Transmit Mode............................................................................................................................................................................ 18

8.4.2 Receive Mode............................................................................................................................................................................. 18

8.5 RX and TX Interface ............................................................................................................................................................................... 19

8.5.1 Input TX ...................................................................................................................................................................................... 19

8.5.2 Output RX ................................................................................................................................................................................... 19

8.6 MODE Input EN...................................................................................................................................................................................... 20

8.7 Serial Port Interface................................................................................................................................................................................ 21

8.7.1 Device Configuration using 2-Wire Serial Port ........................................................................................................................... 21

8.8 Control and Diagnosis Registers ............................................................................................................................................................ 24

8.8.1 Definition of Control and Status Registers.................................................................................................................................. 24

8.9 ESD/EMC REMARKS ............................................................................................................................................................................ 26

8.9.1 General Remarks........................................................................................................................................................................ 26

8.9.2 ESD-Test .................................................................................................................................................................................... 26

www.austriamicrosystems.com/Lin_CompanionIC/AS8530

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